Unified Brands Ventilation Hood VENTILATION SYSTEMS User Manual

OPERATORS MANUAL  
This manual provides  
Installation & Operating instructions for  
VENTILATION  
SYSTEMS  
NOTIFY CARRIER OF DAMAGE AT ONCE.  
It is the responsibility of the consignee to inspect the  
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the possibility of any damage, including concealed  
damage. Avtec suggests that if you are suspicious  
of damage to make a notation on the delivery re-  
ceipt. It will be the responsibility of the consignee to  
file a claim with the carrier. We recommend that you  
do so at once.  
Manufacture Service/Questions 888-994-7636.  
Information contained in this document is known to be  
current and accurate at the time of printing/creation.  
Unified Brands recommends referencing our product line  
websites, unifiedbrands.net, for the most updated product  
information and specifications.  
1055 Mendell Davis Drive  
Jackson, MS 39272  
888-994-7636, fax 888-864-7636  
avtecind.com  
P/N OMANUAL_VMR-09/06  
 
VII. VENTILATOR FEATURES AND ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . .  
A. Baffle Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
B. Modular Grease Extractors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
C. Auto Wash Grease Extractors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
D. Air Adjustment Baffle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
E. Fire Dampers . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. .. . . . . . . .. .. .  
F. Air Make-Up [Supply] Plenums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .. .  
G. Auto Wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
H. Cold Water Mist [Optional] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
I. Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
18  
18  
18  
19  
19  
20  
20  
21  
21  
21  
VIII. PERIODIC MAINTENANCE . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
A. Baffle Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
B. Modular Grease Extractors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
C. Grease Trough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
D. Grease Collection Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
E. Hood Canopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
F. Detergent System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
G. Fusible Link Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
21  
21  
21  
21  
22  
22  
22  
22  
IX. PARTS LIST  
A. PAWS Panel - Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
B. VCW Panel - Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
C. PAWS/VCW Panel - Plumbing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
D. EVAC Detergent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
E. Electro-Mechanical Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
F. Fusible Link Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
G. Hood Canopy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
23  
23  
23  
24  
24  
25  
25  
X. OTHER DATA AND DRAWINGS  
A. EVAC Cleaner Cut Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
B. Air Movement Recordings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
C. Calculating and Recording Air Movement Readings . . . . . . . . . . . . . . . . . . . . . .  
D. Calculating and Recording Air Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
27  
28  
29  
30  
XI. WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
31  
 
canopy contains an integral grease trough and  
grease collection receptacle(s). Surface, plenum  
and duct collar fire extinguishing systems are  
1I. TYPES OF SYSTEMS  
This manual covers three [3] of the basic types of  
systems offered by AVTEC - Baffle Filter [AF],  
Modular Grease Extractor [AX] and Auto Wash  
Down [AW].  
A.Baffle Filter [AF Series] [See fig. #1]  
Model AF ventilators are listed by Underwriters  
Laboratories Inc. [UL] and are built in accordance  
with the National Fire Protection Association  
[NFPA] Standard No. 96 for use with UL Listed  
fire extinguishing systems for duct hood  
protection. They are available with or without an  
automatic exhaust fire damper. They utilize UL  
Classified removable baffle filters to extract  
grease and provide a limited fire barrier. The  
canopy contains an integral grease trough and  
removable grease receptacle(s).  
Surface,  
plenum and duct collar fire extinguishing systems  
may be factory supplied.  
required and may be factory supplied.  
Vent Control Panels may be supplied with these  
systems. See additional wiring diagrams for  
options.  
Vent control panels may be supplied with these  
systems.  
options.  
See additional wiring diagrams for  
Installation shall be in accordance with NFPA 96.  
C.Auto Wash Down [AW Series] Energy Aire [see  
fig. #3]  
Model AW ventilators are listed by UL and built in  
accordance with NFPA Standard No. 96 for use  
with UL Listed fire extinguishing systems for duct  
and hood protection. They are available with or  
without an automatic exhaust fire damper.  
Installation shall be in accordance with NFPA 96.  
B.Modular Grease Extractors [AX Series] Energy  
Aire [see fig. #2]  
Model AX ventilators are listed by UL and built in  
accordance with NFPA Standard No. 96 for use  
with UL Listed fire extinguishing systems for duct  
and hood protection. They are available with or  
without an automatic exhaust fire damper.  
These models utilize high velocity removable  
grease extractors. This exclusive design extracts  
up to 95%* of airborne grease contaminants. The  
These systems utilize a high velocity grease  
extractor. This exclusive design extracts up to  
1 *Data from independent tests not a part of UL test  
procedure.  
95%* of airborne grease contaminants.  
An  
1
 
integral water wash system cleans the inside of  
the grease extraction chamber either by manual  
activation of the Wash Start button or by a  
programmable timer. The duration of the wash is  
electrically controlled. The wash system is also  
activated by an electrical thermostat or a manual  
switch in the event of a fire condition. A surface  
fire extinguishing system is required and may be  
factory supplied.  
Wet Chemical and Water Mist. Wet Chemical  
Systems may be all or partially factory installed  
[by the Fire System Manufacturer]; final hook up  
and certification at job site is done by the Fire  
System Manufacturer's local representative.  
These systems must be periodially inspected,  
and critical parts replaced. It is suggested that a  
service contract be purchased from the local  
representative. For further details refer to the  
manufacturer's technical manual.  
Auto Wash control panels are provided with these  
systems. Wiring diagrams are provided with this  
manual.  
AVTEC manufactures and installs a water mist  
fire extinguishing system, "MIST-A-FIRE", that  
connects to the building fire sprinkler system  
[must be "wet" type system]. Final connect of this  
system must be done in the field by the sprinkler  
Installation shall be in accordance with NFPA 96.  
D.Airflow Requirements  
contractor  
certification/inspection report is done by an  
authorized AVTEC representative. Periodic  
inspection is generally required, but replacement  
of parts and periodic maintenance is virtually  
or  
authorized plumber.  
A
Minimum exhaust airflow requirements and  
maximum make-up airflow requirements [where  
air is introduced directly inside the canopy] are  
shown on the chart below. These flow rates were  
established under laboratory conditions. Greater  
exhaust airflows and/or reduced make-up airflows  
may be required for complete capture.  
eliminated.  
For further details, refer to the  
AVTEC MIST-A-FIRE Installation and Operating  
Technical Manual.  
CFM REQUIREMENTS  
II. INSTALLING THE VENTILATOR  
400°F Cooking  
Surface Equip.  
200  
600°F Cooking  
Surface Equip.  
300  
700°F Cooking  
Surface Equip.  
525  
Model No.  
AFWO,AFBO  
AFDO,AFWP  
AFBP,AFDP  
AFWE,AFDE  
AFBE  
The ventilator is supplied with brackets to facilitate  
the attachment of hanger rods to the vent. Hanger  
rods should be attached to all brackets to ensure  
proper support.  
AFWI,AFBI  
AFDI,AFWD  
AFBD,AFDD  
AFIO,AFIP  
AFIE  
250[175]  
250  
N/R  
400  
N/R  
600  
A.Ascertain that the ceiling/roof structure is strong  
enough to support the weight of the hood and  
support system. The approximate weight of the  
hood is shown below:  
AFII,AFID  
300[150]  
200  
N/R  
275  
N/R  
525  
AXWO,AXBO  
AXDO,AXWP  
AXBP,AXDP  
AXWE,AXDE  
AXBE  
45 lbs/linear ft. for hoods w/o AMU plenums.  
55 lbs/linear ft. for hoods w/AMU plenums.  
125 lbs for fire control cabinet.  
AXWI,AXBI  
AXDI,AXWD  
AXBD,AXDD  
AXIO,AXIP  
AXII  
AWWO,AWWP  
AWWE,AWDO  
AWDP,AWDE  
AWBO,AWBP  
AWBE  
AWWI,AWBI  
AWDI,AWWD  
AWBD,AWDD  
AWTE,AWTP  
AWTO  
250[175]  
N/R  
N/R  
B.Carefully uncrate the hood so as not to dent or  
scratch the outer surface.  
250  
300[150]  
194  
400  
N/R  
270  
600  
N/R  
*525  
C.Position the hood on the floor in approximately  
its final installed location.  
D.Use 1/2" threaded rods to hang the hood. The  
hanger rods should be approximately 1/2" closer  
to the wall at the structural attachment location  
than at the top of the hood. [see fig. #4] This  
ensures that the hood is held tightly against the  
wall.  
250[190]  
400  
270[146]  
420  
N/R  
N/R  
N/R = Not Recommended  
*=Manufacturer's test results not yet submitted to U.L. for capture tests.  
Note! Do not remove Support Brace until Ventilator  
installation is complete. Upon completion of  
installation, dispose of Support Brace and replace the  
Acorn Nuts to their original locations.  
E.Fire Extinguishing Systems  
There are two basic types of ventilator fire  
extinguishing systems in use today:  
2
 
H. Install bulbs in the light fixture[s].  
I.Install the grease filters [AF] or modules [AX].  
J.Install the grease receptacles [AF or AX]  
NOTE: A minimum of a three inch [3"] insulated  
fire barrier and air space must be maintained  
between the capture area skin of the ventilator  
and any combustible surface, including wall and  
ceiling. AVTEC ventilators normally have a 3" air  
space; insulation is added when specified.  
Fig 4  
III.CONTROL PANEL [if provided]  
E.The hood should be hung so that the bottom of the  
hood is 6'-6" above the finished floor unless otherwise  
specified. Carefully lift the hood into position being  
certain to avoid scratching the finished surfaces.  
Install 1/2" threaded rod from each bracket and the  
structural support. Secure rods with heavy duty nuts.  
[see fig. #5] Be sure that the hood is level.  
Control panels are provided with all auto wash type  
ventilators [Models AW- ] and are optional with the  
baffle filter type [AF- ] and modular grease  
extractor type [AX- ]. Control panels with Models  
AF- and AX- do not have the auto wash plumbing  
assembly compartments. Any control panel may  
be provided with  
a
integral MIST-A- FIRE  
Extinguishing System alarm panel and sprinkler  
assembly piping; refer to the MIST-A-FIRE  
technical manual.  
A.Wall Attachment  
Control panel dimensions and connection detail  
are shown on the enclosed shop drawing.  
Panels may be surface mounted, partially  
recessed or fully recessed as shown on fig. 6.  
1.Surface Mounted  
Drill four [4] holes in ventilator plumbing  
compartment as required. Be careful not to  
damage any components. Avoid drilling into  
electrical compartments. Bolt to wall with  
anchor bolts or other acceptable means.  
Weight of control panel varies from 90 lbs. to  
200 lbs.  
Fig 5  
Tower Interface Detail  
Place trim collar on tower. Position tower under hood.  
Fully tighten trim collar retainer hardware after tower  
and hood are aligned properly. See fig. A, B, and C  
(next page).  
2.Recessed  
Cut hole in wall 1/2" greater than O/A  
dimensions of control box [shown on shop  
drawing]. Spacers or support angles may be  
necessary to provide proper support. It is  
recommended that panel be bolted to wall  
similar to method used for surface mounted  
above.  
F.The entire exhaust duct system must be con-  
tinuously welded. This includes the connection  
to the duct collar and the roof curb. All welds  
must be liquid tight.  
NOTE: Welds must not impede operation of  
damper.  
G.Connect the lights to the circuit breaker panel  
through the light switch. All connections should  
be in compliance with NFPA 70, National Electric  
Code [NEC].  
3
 
4
 
IV. ELECTRICAL CONNECTIONS  
1.Typical Field Connections for the PAWS  
Control Panel are shown on [figs. 10, 11, and  
12]. Note that all options and connections may  
not be included on your system.  
A.VCW Control Panel [Refer to fig. 7]  
1.Typical field connection terminals for VCW  
Control Panel are shown in fig. 7. For custom  
features such as sequential wash, time delay,  
etc. refer to AVTEC shop drawing in back of  
this manual.  
2.Terminal Block #1 [TB-1] has three [3]  
terminals and is located on the right-hand side of  
the Input/Output [I/O] Board. Terminal #1  
[uppermost] is for the Hot lead of the power  
supply and is protected by a fuse located within  
the panel. Terminal #2 [center] is for the Neutral  
lead of the power supply. Terminal #3  
2.Terminals No. 1 and No. 2 are for the  
120vac Power Supply. Terminal No. 1 is Hot  
and Terminal No. 2 is Neutral.  
3.Terminals No. 3 and No. 4 are 120vac  
power for the Water Solenoid and Detergent  
Pump. These terminals are "hot" whenever  
the Water Wash Solenoid and the Detergent  
Pump is scheduled to be "ON" or when there  
is a fire condition. Terminal No. 5 provides  
power for a pump/prime switch with a  
momentary closed/normally open contact.  
This switch is helpful in checking the  
performance of the pump as well as in  
priming the pump.  
[lowermost] is used to ground the Input/Output  
Board to the Control Panel Housing.  
Terminal No. 4 is Hot and Terminals No. 2 & 3  
are Neutral.  
3.Terminals No. 3 and No. 6 carry 120vac  
whenever the fans are scheduled to be ON.  
They are used to activate the fan contactor[s]. In  
the event of a fire situation, power is removed  
from Terminal 5 which provides power for  
Terminal No. 6. Terminal No. 6 is the Hot lead  
B.Programmable Automatic Wash Sequence  
[PAWS] Control Panel  
and  
Terminal  
No.  
3
is  
Neutral.  
Fig. 7  
5
 
4.Terminal Block #2 [TB-2] has three [3] pairs of  
terminals and is located at the upper right corner  
of the Input/Output Board. The first pair of  
terminals are for the number one wash valve  
solenoid. This will be the only wash output  
active in a P-10-__ or P-15-__ Control Panel.  
The second pair of terminals are for the number  
two wash valve solenoid. The third pair of  
terminals are for the number three wash valve  
solenoid.  
5.Terminal Block #3 [TB-3] has three [3] pairs of  
terminals. It will not be present on P-10-__ or P-  
15-__ Control Panels. The first pair of terminals  
are for wash valve solenoid number four. The  
second pair of terminals are for the number five  
wash valve solenoid. The third pair of terminals  
are for the number six wash valve solenoid.  
6.Terminal Block #4 [TB-4] has three [3] pairs of  
terminals. It will not be present on P-10-__ or P-  
15-__ Control Panels. The first pair of terminals  
are for the number seven wash valve solenoid.  
The second pair of terminals are for the number  
eight wash valve solenoid.  
Fig 8a  
7.Terminal Block #5 [TB-5] has three [3] pairs of  
terminals. The first pair provides power for the  
detergent pump. The second pair provides  
power for the PAWS Alarm/Trouble horn. [The  
third pair provides power for the vent fan  
contactors. [see figs. #8a & 8b]  
Note that the maximum output is one-and-one-  
half [1-1/2] amperes. If the total inrush current  
for all contactors will exceed this limit, an  
intermediate relay must be used.  
8.Terminal Block #9 [TB-9] has three [3] pairs of  
terminals and is located at the lower left corner of  
the Input/Output Board.  
The first pair of  
terminals are for connection to the optional  
supervised shut-off valve. If the panel is not  
equipped with this option, a jumper wire must be  
installed. The second pair of terminals are for  
connection to the Manual Fire Switch. The third  
pair of terminals are for connection to the  
automatic fire switch contacts terminals are for  
connection to the automatic fire switch contacts.  
Fig 8b  
6
 
9.Terminal Block #11 [TB-11] has three [3] pairs of  
terminals. The first pair of terminals are low voltage  
connections for the detergent low level probe. The  
probe should be installed in the detergent container  
so that it does not protrude above the top of the  
detergent pump inlet strainer. [fig. #9] This is  
intended to prevent cavitation of the pump and will  
advise when the tank needs to be refilled. The probe  
rods may be cut to facilitate a neat and effective  
installation.  
Fig 9  
10.Terminal Block #12 [TB-12] has three [3] pairs  
of terminals. The first pair of terminals are for  
connection to the optional battery.  
7
 
Terminal Block Designation  
[For authorized sevice techinician use only]  
B. PAWS Control Panel  
TB-1  
1-Line Hot  
2-Line Neutral  
Incoming Power Supply 120vac, 15 amps, 60 Hz  
3-Mech. Ground  
1-Switched Hot  
2-Neutral  
3-Switched Hot  
4-Neutral  
5-Switched Hot  
6-Neutral  
1-Switched Hot  
2-Neutral  
3-Switched Hot  
4-Neutral  
5-Switched Hot  
6-Neutral  
1-Switched Hot  
2-Neutral  
3-Switched Hot  
4-Neutral  
1-Switched Hot  
2-Neutral  
3-Switched Hot  
4-Neutral  
5-Switched Hot  
6-Neutral  
1-Switched Hot  
2-Neutral  
*3-Switched Hot  
*4-Neutral  
5-Neutral  
6-Hot  
*1-NC  
TB-2  
Wash Solenoid #1, 120vac, 1.5 amps max  
Wash Solenoid #2, 120vac, 1.5amps max  
Wash Solenoid #3, 120vac, 1.5amps max  
Wash Solenoid #4 120vac, 1.5amps max  
Wash Solenoid #5 120vac, 1.5amps max  
Wash Solenoid #6 120vac, 1.5amps max  
Wash Solenoid #7 120vac, 1.5amps max  
Wash Solenoid #8 120vac, 1.5amps max  
Detergent Pump, 120vac, 1.5apms max  
PAWS Alarm Horn, 120vac, 1.5amps max  
Fan Contractor, 120vac, 1.5amps max  
Spare Output [PAW] 120vac 1.5amps max  
TB-3  
TB-4  
TB-5  
TB-6  
TB-7  
TB-8  
TB-9  
TB-10  
Spare Output [MAF II] 120vac, 1.5amps max  
Auxillary  
Power Tap  
120vac, 120amps max  
*2-C  
*3-NO  
*4-NC  
*5-C  
*6-NO  
*1-NC  
*2-C  
*3-NO  
Trouble Dry Contacts [MAF II] 1.5amps @ 28vdc/120vac  
Trouble Dry Contacts [MAF II] 1.5amps @ 28vdc/120vac  
Fire Dry Contacts [MAF II] 1.5amps @ 28vdc/120vac  
Fire Dry Contacts [MAF II] 1.5amps @ 28vdc/120vac  
*4-NC  
*5-C  
*6-NO  
1-Line Hot  
2-Switched Hot  
3-Line Hot  
4-Switched Hot  
5-Line Hot  
6-Switched Hot  
*1-Line Hot  
*2-Switched Hot  
*3-Line Hot  
*4-Switched Hot  
*5-Line Hot  
*6-Switched Hot  
1-Detergent  
2-Probe  
PAWS Supervised  
Valve Switch  
PAWS Manual  
Fire Pull Switch  
PAWS Automatic  
Fire Switch  
MAF II Water  
Flow Switch  
MAF II Water  
Pressure Switch  
]
|
|
|
120vac, 25 milliamps  
12vdc, 25 milliamps  
|
]
]
|
|
|
MAF II Supervised |  
Valve Switch  
]
TB-11  
TB-12  
20vdc, 2 milliamps  
*3-Positve  
*4-Negative  
1-Positve  
MAF II Horn, 12vdc, 1.5amps  
2-Negative  
3-Positve  
Battery, 12v, 5A Hours  
Auxillary  
4-Negative  
Power Tap  
*See “Mist-A-Fire Technical Manual” (fig. 10)  
8
 
C.Dampers & Detectors [AW & optional AX  
Models] [Fig. 13]  
Terminal block in the damper housing is pre-  
wired to a junction box above. The wires are  
colorcoded; refer to field interconnection wiring  
diagram. [Refer to enclosed control panel wiring  
C.Drain[s]  
diagram].  
between damper housings.  
Interconnection may be required  
The drain pipe is connected at one or both ends  
of the ventilator and run to an air gap assembly,  
hub & funnel or open floor drain to act as an  
anti-siphoning device. An air gap assembly is  
recommended for the most sanitary and positive  
connection. The air gap should be the same  
size on the inlet end and one pipe size larger on  
the outlet to avoid splash over.  
D. Field Joints  
Interconnection between field joints on AW  
Hood attach with 2” elbows and expandable  
coupler. [Refer to fig. 11]  
Error! Not a valid link.  
Fig. 11  
E.Detergent Pump and Tank  
Detergent pump tubing [plastic, copper or  
stainless steel] must be provided from the  
detergent pump outlet to an injection point  
between the vacuum breaker/check valve and  
Fig. 13  
D.Ventilator Lights  
the ventilator inlet.  
multiple pumps are used.  
For larger installations  
Normally the  
A 120vac supply circuit must be supplied thru a  
ventilator light switch to the ventilator. The light  
switch may be supplied by AVTEC in the control  
panel or on the hood. Interconnection may be  
required between light fixtures.  
detergent pump and tank are located in the  
control panel, and tubing from the detergent  
pump to the detergent tank is factory connected.  
In the application when the detergent pump and  
tank are located in a remote area, tubing is  
provided for connection from the pump to the  
tank.  
V.PLUMBING CONNECTIONS  
[AW Models] [Refer to fig. 14]  
The connections listed below are shown on page  
8.  
Pumps may be pre-wired in control panel or  
Energy Distribution System, or located remotely.  
Detergent tank must always be located within 5  
ft. of the pump.  
A.Hot Water Wash  
140o hot water is needed to properly clean the  
extractor chamber. Supply is connected to the  
control panel inlet. Control panel outlet is  
connected to the ventilator inlet[s].  
F.Interconnecting  
Depending on specifications, some ventilator  
sections may require interconnection of hot  
water, cold water or drains. See shop drawing  
in back of this manual for detail.  
NOTE: A vacuum breaker and check valve must  
be installed at least 6" above the ventilator inlet  
to prevent back-up of detergent water into fresh  
water supply.  
B.Cold Water Mist [Optional]  
Cold water supply is connected to the control  
panel inlet. Control panel outlet is connected to  
the ventilator inlet[s].  
9
 
10  
 
VI. OPERATION  
A. VCW Control Panel [Refer to fig. 16]  
1.Adjustment  
will continue to time down. For example, if the  
fire were to occur after 5 minutes of a 30  
minute time-delay period and lasted for 15  
minutes before the fire switch [manual] or  
thermoswitch [auto] was activated, then the  
fan[s] would come on for 10 minutes, then shut  
OFF.  
The component layout is shown below. The  
only adjustment necessary is for the auto wash  
timer relay. Refer to Sec. VII. G, page 18 for  
function explanation. Normally three minutes is  
used for ovens, steam equipment and light duty  
ranges, and five minutes is used for fryers,  
griddles, etc. A longer wash may be required  
for charbroilers.  
3.Trouble- Shooting [VCW]  
a.Fans won't activate when start button is  
pushed.  
1.Check the wiring to the fan contactor and  
verify that it is wired according to the  
VCW panel schematic.  
2.Check the inter-wiring between the VCW  
panel  
and  
the  
electro-mechanical  
dampers located on the ventilator hoods.  
If the wiring is correct proceed to step c.  
3.Check terminals No. 1 and No. 2 with a  
voltmeter. 120vac should be present at  
all times. If voltage is present, proceed  
to step 6.  
4.No voltage present. Check wiring to  
ensure terminals No. 1 and No. 2 have  
been connected to a proper 120vac  
power source.  
5.Check that all related fuses are intact and  
that the circuit breaker in main circuit  
breaker panel is "ON".  
6.Check the fire switch pull station  
[optional] for proper wiring and also  
check that it is properly closed and  
latched.  
7.Check the dampers on all interconnected  
ventilator hoods for a fire condition.  
8.In a normal condition damper terminals A  
& C will have 120vac. In a fire condition  
terminals B & C will have 120vac.  
2.Sequence Of Operation  
Press "START" Button to turn fan[s] ON. When  
the time comes to shut down the fan[s] [either  
at the end of the day or the end of the cooking  
period] press the "STOP" Button. If the system  
is equipped with auto wash, the fans will shut  
OFF and the auto wash and detergent pump  
will come ON. At the end of the Wash Cycle,  
the auto wash solenoid closes.  
a.If terminals B & C have 120vac fans will  
not operate. Voltage present at these  
terminals  
thermoswitches in the duct have  
closed. These thermoswitches  
indicates  
that  
the  
automatically reset after cooling to a  
temperature below 300oF.  
If the fans are OFF you can advance directly to  
the Auto Wash [Time-Delay] Period by pressing  
the "STOP" Button.  
If the thermoswitch does not reset after  
cooling, replace it with  
thermoswitch.  
a
new  
In the event of a fire condition, the fans will shut  
OFF [if they were ON] and the Auto Wash will  
come ON [if the unit is so equipped]. The unit  
will remain in this condition until the  
thermoswitch resets itself and then the panel  
will return to its mode of operation before the  
fire condition occurred.  
b.Check for 120vac at terminals No. 2 &  
No. 5. This voltage should be present  
at all times.  
If voltage is present  
proceed to step 8c. If voltage is not  
present refer to step 8.a as listed  
above.  
c.While pushing the "START" Button,  
terminals No. 3 and No. 7 will have 120  
NOTE: If a fire condition occurs during the  
timed auto wash/time-delay period, the timers  
11  
 
vac as long as the "START" Button is  
depressed.  
4.Check all the dampers on the ventilator to  
verify that none of the dampers have  
been activated into the fire condition.  
5.Check condition of solenoid for damage  
or debris.  
d.Once the "Start" Button is released,  
power[120vac] will be present at  
terminals No. 2 & No. 6. If no power is  
present after releasing start button  
verify that the fan contactor has been  
wired as shown on VCW Panel  
Electrical Schematic.  
d.Solenoid coil activates but no water flow is  
present.  
1.Check water pressure gauge. If water  
pressure of 25 psig or more is present  
proceed to steps 2 & 3. If no water  
pressure is present proceed to steps 4 &  
5.  
2.Check solenoid valve for damage or  
debris.  
3.Check for water line blockage and verify  
all spray nozzles are clear.  
e.Voltage present at terminals No. 2 &  
No. 6 after pushing "START" Button,  
fans won't operate.  
This condition  
indicates that the control wiring is  
operating properly, therefore the  
problem must be in the fan motor itself  
or the power supply wiring to fan thru  
the normally open contactor or the fan  
contactor.  
4.Check all water supply valves to verify  
they are open.  
5.Check and clean all line wye strainers.  
b.Auto Wash Solenoid does not open.  
1.Check that fuse is intact.  
2.Check terminals No. 1 and No. 2 with volt  
meter.  
a.If 120vac proceed to step 2d.  
b.If no voltage, check fuse and wiring to  
panel.  
c.Check panel circuit breaker and verify  
that it is "ON",  
d.Press "Stop" button in completely and  
hold for one [1] full second.  
e.Check terminals No. 3 and No. 4 with  
volt meter.  
i.If 120vac is present, check wiring to  
water solenoid. Check voltage at  
solenoid coil. If 120vac is present,  
replace coil. If no voltage, refer to  
step 2.b.  
ii.Check the timer relay inside the VCW  
Panel to verify that power is going thru  
the contacts and that the coil is  
engaging. If relay doesn't function  
properly, replace the relay, If relay  
functions properly proceed to step 4.  
iii.Check wiring against schematic to  
verify that is correct. Check condition  
of wires and connections to verify that  
they are not loose or damaged.  
c. Auto Wash Solenoid will not close.  
1.Check terminals No. 3 & No. 4 for voltage  
B. PAWS Control Panel [Refer to fig. 17]  
1. Manual Operation  
[120vac].  
If no voltage is present  
The Programmable Automatic Wash Sequence  
[PAWS] Panel is designed to control the  
operation of the ventilator exhaust and air  
make-up fans and wash the grease extraction  
plenum with a hot water/detergent solution.  
The fan operation and wash sequence can be  
proceed to step e.  
2.Check the wiring to the fire switch pull  
station to see that it has been wired to  
the correct contacts.  
3.Check the fire switch pull station  
[optional] to verify it has not been pulled.  
12  
 
started and stopped manually or programmed  
or automatic operation.  
silenced by pressing the "VFC Horn Silence"  
switch, but the trouble condition will continue to  
be displayed. The fan will operate normally,  
hot water will not flow during the wash cycle  
and the display will continue to flash "PLENUM  
WASH AND FIRE CYCLES LOST". When the  
valve is opened, the alarm condition will  
automatically clear itself. In the event that the  
detergent level drops below the probe and the  
optional supervised valve is closed at the same  
time, the horn will sound and the display will  
alternate between "DETERGENT LOW" and  
"PLENUM WASH AND FIRE CYCLES LOST".  
The horn can be silenced by pressing the "VFC  
Horn Silence " switch.  
a. Fan Start  
The exhaust and air make-up fans can be  
started manually by pressing "FAN ON/WASH  
OFF" on the PAWS panel. If the wash cycle is  
in progress it will stop immediately and the fans  
will start. The PAWS display will indicate "FAN  
ON/WASH OFF".  
b. Fan Stop  
The exhaust and air make-up fans can be  
stopped  
manually  
by  
pressing  
"FAN  
OFF/WASH OFF" on the PAWS panel. The  
fans will stop immediately. The PAWS display  
will indicate "FAN OFF/WASH OFF".  
3. Hood Plenum Fire Protection  
a. Automatic Operation  
In the event of a fire in and/or under the  
ventilator, the fans will turn off and the plenum  
wash will be activated when the temperature at  
the duct collar exceeds 300°F. The display will  
read "AUTO FIRE CYCLE FAN OFF/WASH  
ON" and the PAWS panel alarm will sound.  
The alarm cannot be silenced. When the  
temperature at the duct collar drops below 300  
°F, the PAWS panel will enter the fire delay  
cycle. During the fire delay cycle the fan will  
remain off and the hood plenum wash will  
remain on for a programmable period of time  
then automatically return to normal operation.  
The fire delay cycle can be terminated by  
pressing "FAN OFF/WASH OFF" on the PAWS  
panel. [See Sec. 4.b.2.c for setting Fire Delay  
Cycle Duration].  
c. Wash Start  
The wash cycle can be started manually by  
pressing "FAN OFF/WASH ON'' on the PAWS  
panel. If the fans are on, they will stop  
immediately. The display will indicate "WASH  
1" and the total time [in hours and minutes]  
remaining until the wash cycle ends.  
d. Wash Stop  
The wash cycle can be stopped manually by  
pressing "FAN OFF/WASH OFF" on the PAWS  
panel. The wash cycle will stop immediately.  
The PAWS display will read "FAN OFF/WASH  
OFF".  
2. Trouble Conditions  
a. Low Detergent Indicator  
If the detergent level drops below the bottom of  
the detergent probe, the PAWS panel horn will  
sound and the display will flash "DETERGENT  
LOW". The horn can be silenced by pressing  
the "VFC Horn Silence" switch, but the trouble  
condition will continue to be displayed. The  
detergent pump will not operate until the  
detergent tank is refilled. The fan and wash  
cycles will continue to operate normally,  
however, the display will continue to flash  
"LOW DETERGENT". When the detergent  
tank is refilled, the trouble condition will  
automatically clear itself after approximately 10  
seconds.  
b. Manual Operation  
The PAWS panel may be equipped with the  
optional "Manual Fire Switch". Pulling the  
"Manual Fire Switch" will turn on the exhaust  
fan(s) and activate the plenum hood wash to  
act as a fire barrier. The display will read  
"MAN'L FIRE CYCLE FAN ON/WASH ON" and  
the PAWS panel alarm will sound. The alarm  
cannot be silenced. After the "Manual Fire  
Switch" is reset, the PAWS panel will enter the  
fire delay cycle. During the fire delay cycle the  
exhaust fan will remain on for a programmable  
period of time then automatically return to  
normal operation. The fire delay cycle can be  
terminated by pressing "FAN OFF/WASH OFF"  
on the PAWS panel. [See Sec. 4.3 for setting  
Fire Delay Cycle duration].  
b. Supervised Water Valve [optional]  
If your PAWS panel is equipped with the  
optional supervised valve, the PAWS panel  
horn will sound and the display will flash  
"PLENUM WASH AND FIRE CYCLES LOST"  
when the valve is closed. The horn can be  
4. Programming Instructions [Refer to fig. 17A  
& 17B]  
a. Setting the Clock  
13  
 
The PAWS Control Panel is equipped with an  
integral clock which can be used to  
automatically operate the fan and wash cycles.  
To set the time press "RETURN CLOCK" once.  
The display will read "SET DAY AND TIME  
SELECTED" and then change to "SET DAY  
AND TIME" as well as the day and time. Press  
"CHANGE CLEAR" and the day and time will  
begin to flash. Press "DAY+" and/or "DAY-" to  
set the correct day. Press "HOUR+" and/or  
"HOUR-" to set the correct hour. Note if "AM"  
or "PM" is displayed correctly. Press  
"MINUTE+" and/or "MINUTE-" to set the  
correct minutes. When you are satisfied that  
the day and time are correctly displayed, press  
"SAVE ENTER". The display changes to the  
Normal Display. If no key is pressed for thirty  
[30] seconds, the display will automatically  
return to Normal Display.  
As many as eight [8] hood sections can be  
programmed to wash in sequence. [The total  
number of washes and outputs is determined  
prior to shipment and set at the factory]. Each  
section can be programmed to wash for a  
different period of time, up to fifteen [15]  
minutes per section.  
There are also up to eight [8] recovery periods  
which can be programmed for different  
durations from zero [0] minutes up to two [2]  
hours per segment. The recovery periods can  
be used to allow the water heater to recover  
between wash segments in installations with a  
limited hot water supply. It can also be used in  
installations which require that the fans  
automatically turn on for a period of time after  
the final wash period.  
To review PAWS, press "PAWS". The display  
will indicate "PAWS MODE SELECTED" for  
about three [3] seconds then change to indicate  
the total PAWS duration [PAWS and recovery  
periods] in hours and minutes, and the duration  
of the first wash period in minutes. Press  
"NEXT" to display the duration of the first  
recovery period. Continue to press "NEXT" to  
review the remaining wash and recovery  
segments.  
b. Setting the PAWS  
1. Single Wash Models [P-10__ & P-15__]  
The wash can be programmed to run for up to  
fifteen [15] minutes. It is followed by a recovery  
period of from zero [0] minutes up to two [2]  
hours. This period can be used in installations  
which require that the fans automatically turn  
on for a period of time after the wash cycle is  
complete.  
To change the duration of a wash or recovery  
segment, press "NEXT" or "LAST" until the  
appropriate segment is displayed, then press  
"CHANGE CLEAR". When the display flashes,  
press "MINUTE+" or "MINUTE-" until the  
desired duration is displayed, then press  
"SAVE ENTER" to retain that time. The total  
PAWS duration is automatically updated.  
To change additional segments, repeat the  
above procedure.  
To review the PAWS, press "PAWS". The  
display  
will  
indicate  
"PAWS  
MODE  
SELECTED" for about three [3] seconds then  
change to indicate the total PAWS duration  
[wash and recovery periods] in hours and  
minutes, and the duration of the wash period in  
minutes. Press "NEXT" to display the duration  
of the recovery period. Press "NEXT" to  
display the duration of the fire delay cycle.  
To change the duration of a segment, press  
"NEXT" or "LAST" until the appropriate  
segment is displayed, then press "CHANGE  
CLEAR". When the display flashes, press  
"MINUTE+" or "MINUTE-" until the duration is  
displayed, then press "SAVE ENTER" to retain  
When all segments have been set, press  
"RETURN CLOCK" to return to Normal Display.  
If no key is pressed for thirty [30] seconds, the  
panel will automatically return to Normal  
Display.  
that time.  
automatically updated.  
The total PAWS duration is  
c. Setting The Fire Delay  
To change the duration of the fire delay cycle  
press "PAWS" to enter the PAWS Review  
mode. Press "NEXT" to review all of the  
To change the duration of an additional  
segment, repeat the above procedure.  
When all segments have been set, press  
"RETURN CLOCK" to return to Normal Display.  
If no key is pressed for thirty [30] seconds, the  
panel will automatically return to Normal  
Display.  
PAWS segments.  
After the final PAWS  
segment, press "NEXT" again and the display  
will read "FIRE DELAY" and its duration. Press  
"CHANGE CLEAR" and the display will begin to  
flash. Press "MINUTE+" and/or "MINUTE-"  
until the correct duration is displayed. Press  
2. Multi-Wash Models [P-20-__ & P-25-___]  
14  
 
"SAVE ENTER" to retain that time. Press  
"RETURN CLOCK" to return to Normal Display.  
"RETURN CLOCK" to return to Normal Display.  
If no key is pressed for thirty [30] seconds, the  
display will automatically return for Normal  
Display.  
d. Reviewing The Daily Event Schedule  
The Daily Event Schedule is a program which  
will automatically turn the fans on and off  
and/or initiate the PAWS up to four [4] times  
each day. Each day may be different from  
another or it may be programmed to stay off for  
the entire day. To review the Daily Event  
Schedule, press "CHECK". The display will  
show "CHECK MODE SELECTED" and then  
indicate the first programmed event of that day.  
If there are no events programmed for that day,  
it will display the next programmed event. If  
there are entries in the Daily Event Schedule,  
press "NEXT" to see the next event and/or  
press "LAST" to see the previous event. Press  
"RETURN CLOCK" to return to Normal Display.  
If no key is pressed for thirty [30] seconds the  
display will automatically change to Normal  
Display.  
To program Daily Event Schedules for  
additional days, particularly if they are different  
from the schedule already programmed, repeat  
the previous steps.  
f. Repeating The Daily Event Schedule  
If you wish to repeat the Daily Event Schedule  
from one day to another, press "REPEAT  
DAY". The display will show "REPEAT MODE  
SELECTED", then ask which day's Daily Event  
Schedule is to be repeated.  
Select the  
intended day by pressing "DAY+" and/or "DAY-  
". When the proper day is displayed, press  
"SAVE ENTER". The display will then ask on  
which day that Daily Event Schedule is to be  
repeated. Press "DAY+" and/or "DAY-" until  
the proper day is displayed, then press "SAVE  
ENTER". The display will acknowledge that the  
schedule has been copied, then return to the  
starting Repeat Day display. Continue as  
outlined above to repeat additional Daily Event  
Schedules.  
e. Changing The Daily Event Schedule  
In order to make initial entires in the Daily  
Event Schedule or change existing entries,  
press "PROGRAM DAY". The display will  
show "PROGRAM MODE SELECTED" then  
ask which day's events are to be changed.  
Press "DAY+" and/or "DAY-" to select the  
desired day, then press "SAVE ENTER". If no  
events are programmed to occur that day, the  
display will indicate "FAN ON UNPROG". If  
events are programmed for the day selected,  
that day's first event will be displayed. If an  
event other than the one being displayed is to  
be entered or changed, press "NEXT" until the  
correct event is displayed. Press "CHANGE  
CLEAR".  
NOTE: IF  
A
DAY HAS ALREADY BEEN  
PROGRAMMED FOR A DAILY EVENT SCHEDULE,  
THE ORIGINAL WILL BE ERASED AND  
REPLACED BY THE REPEAT SCHEDULE.  
When you are finished repeating Daily Event  
Schedules, press "RETURN CLOCK" to return  
to Normal Display. If no key is pressed for  
thirty [30] seconds, the display will return to  
Normal Display, automatically.  
g. Holiday Feature  
NOTE: WHEN AN EVENT IS CHANGED, ALL  
EVENTS WHICH ARE SCHEDULED TO OCCUR  
ON THAT DAY AFTER THE EVENT BEING  
CHANGED ARE ERASED.  
To temporarily suspend a programmed Daily  
Event Schedule for a particular day during the  
upcoming seven [7] day period, press  
"HOLIDAY". The display will show the status of  
the current day. Select the day's Daily Event  
Schedule which you wish to suspend [make a  
Holiday] by pressing "DAY+" and/or "DAY-".  
Press "CHANGE CLEAR" to make that day a  
holiday. Press "DAY+" and/or "DAY-" to select  
additional Holidays press "RETURN CLOCK" to  
return to Normal Display. If no key is pressed  
for thirty [30] seconds, the display will  
automatically return to Normal Display. After  
the Holiday passes, the Daily Event Schedule  
will resume normally. The Manual Controls will  
operate normally during a Holiday.  
The time will begin to flash. Press "HOUR+"  
and/or "HOUR-" to select the desired hour.  
Press "MINUTE+" and/or "MINUTE-" to select  
the desired minute. When the correct time is  
displayed, press "SAVE ENTER".  
Press  
"NEXT" to access the next event.  
NOTE: A "FAN ON" EVENT MUST BE FOLLOWED  
BY A "FAN OFF" EVENT.  
Repeat the programming procedure indicated  
above.  
When you have completed  
programming the events for that day, press  
15  
 
h. Fan On During Recovery  
PAWS  
The operator can choose to have the fan on  
during PAWS recovery periods or remain off.  
To have the fan come on during recovery, push  
down the right side of switch number one of the  
selector switch. To have the fan remain off  
during recovery, push down the left side of  
switch number one of the selector switch. [see  
fig. 19]  
Programming Keypad  
k. Diagnostic LED Indicators  
Because of the use of solid state relay circuits,  
a conventional voltmeter may not give reliable  
readings as regards to the operation of the  
various inputs and outputs. To aid in  
troubleshooting, diagnostic LED indicators  
have been built into the left-hand side of the  
Input/Output Board.  
They are shown below.  
i. Power Loss  
In the event of a power loss the clock stops but  
the PAWS and the Daily Event Schedule are  
retained for up to six [6] months.  
D-1 Green  
Illuminates when the number one wash  
output is energized.  
D-2 Green  
j. Last Command Indicator  
In the Normal Display, the last digit of the top  
row indicates the last command put into the  
microprocessor.  
Illuminates when the number two wash  
output is energized.  
D-3 Green  
Illuminates when the number three wash  
output is energized.  
The letters used are:  
L = Power Loss  
D-4 Green  
C = Clock or Program Change  
P = Programmed Daily Event  
Schedule Command  
Illuminates when the number four wash  
output is energized.  
D-5 Green  
M = Manual fan or PAWS Command  
H= Holiday in progress  
Illuminates when the number five wash  
output is energized.  
D-6 Green  
Illuminates when the number six wash  
output is energized.  
D-7 Green  
Illuminates when the number seven wash  
output is energuzed.  
LAST  
COMMAND  
INDICATOR INDICATOR  
DAY OF  
WEEK  
AM/PM  
TIME  
D-8 Green  
FRI  
06:45 PM  
M
Illuminates when the number eight wash  
output is energized.  
FAN OFF/WASH  
OFF  
D-9 Green  
Illumintates when the detergent pump  
output is energized.  
PAWS NORMAL DISPLAY  
D-10 Green  
Illuminates when the PAWS Alarm Horn  
output is energized.  
D-11 Green  
Illuminates when the ventilator fan  
output is energized.  
D-18 Red  
Illuminates when the manual pull station  
circuit is in the normal postion.  
D-20 Green  
Illuminates when the PAWS supervised  
valve is open.  
D-21 Red  
Illumintes when the ventilator automatic fire  
detection circuit is activated.  
D-32 Red  
Glows when the battery circuit is charging.  
D-35 Red  
Glows when the detergent level is low.  
fig. 17B  
16  
 
17  
 
l. Detergent Pump and Tank  
Detergent pumps are factory preset according to the  
chart in fig. no. 15. This is a generalized guide;  
settings may vary depending on water temperature  
and pressure, detergent type and concentration,  
grease load and PAWS duration.  
Terminals No. 23 and 24 of AVTEC terminal  
strip supply 120vac power to the detergent  
pump during the Wash Cycle[s]. The pump  
does not run during the Fire Cycle nor when  
the detergent level is below the bottom of the  
probe.  
VII. VENTILATOR FEATURES AND ACCESSORIES  
A. Baffle Filter Ventilators [AF Models]  
These type of ventilators have removable filters  
which extracts and collects grease in a  
receptacle.  
To start the flow of detergent, press the Pump  
Prime Switch while the PAWS panel is not in a  
wash cycle [no pressure on the outlet side of  
the pump]. Hold the Pump Prime Switch until  
there is no air in the suction line of the pump or  
in the pump head itself. Once there is a solid  
column of detergent from the tank through the  
pump, no further action [except to fill the  
detergent tank] should be required.  
1.Filter Installation [Refer to fig. 20]  
Grease extractor filters are installed by sliding  
them into the upper slot and then lowering  
them into the grease trough slot as shown in  
the drawing below.  
fig. 20  
The filters are removed for cleaning by  
reversing the procedure.  
NOTE: The filters must be installed with the  
baffles running vertically and with the handles  
facing toward the capture area.  
2.Grease Receptacles  
Grease receptacles are located at one each  
of each ventilator section. These must be  
cleaned out periodically. The frequency of  
this cleaning is dependent upon the type of  
equipment used beneath the ventilator and  
the duration of its use.  
It is suggested that initially the grease  
receptacles be emptied daily.  
Terminals No. 21 and 22 of AVTEC terminal  
strip are low voltage [20vdc, 2ma] connections  
for the detergent level probe. The probe  
should be installed in the detergent container  
so that it is above the top of the detergent  
pump inlet strainer. It  
is intended to prevent air from entering the  
pump and notify the operator when it is time to  
refill or replace the detergent tank. The probe  
rods may be cut to facilitate a neat and  
effective installation. [See fig. no. 9]  
B. Modular Grease Extractors [AX Models]  
These type ventilators have removable  
extractor modules which extracts grease  
contaminants which collects in a grease  
receptacle at each end of the ventilator  
section.  
1. Grease Extractor Module Installation  
18  
 
[Refer to fig. 21]  
ventilator section to hold the front panel  
open.  
Grease extractor modules are installed  
by sliding the top [narrow] part of the  
module into the upper retaining slot and  
then lowering the bottom part of the  
module into the grease trough slot.  
2. Spray Nozzles  
Spray nozzles for hot water wash and  
cold water mist are protected from  
clogging by wye-strainers located in the  
plumbing enclosure. However, scale and  
contaminants will accumulate in time and  
these will require occasional cleaning to  
assure proper wash down and spray  
distribution. A paper clip or other pointed  
object should be used to scrape  
contaminants from the nozzles.  
D. Air Adjustment Baffle [Refer to fig. 23]  
Some grease extractor models may be  
equipped with air adjustment baffles at the  
exhaust intake slot. These baffles may be  
adjusted to increase or decrease the intake  
slot, according to the cfm desired or required  
for varying pieces of cooking equipment  
underneath. The length of the baffles varies  
according to project design specifications and  
conditions. The standard opening of nominal 3"  
yields approximately 250 cfm/linear ft. and is  
used for most cooking appliances. Air flow may  
be reduced to a low as 150 cfm/linear ft. for  
ovens, steamers, etc. depending on local job  
conditions. Adjusting the slot to nominal 1-3/4"  
opening will yield approximately 150 cfm/linear  
ft.  
fig. 21  
NOTE: Handle faces towards capture area.  
2. Grease Receptacles  
Grease receptacles are located at each  
end of each ventilator section. These  
must be cleaned out periodically. The  
frequency of this cleaning is dependent  
upon the type of equipment used beneath  
the ventilator and the duration of its use.  
It is suggested that initially the grease  
receptacles be emptied daily.  
C. Auto Wash Grease Extractors [AW  
Models]  
These type ventilators have an automatic  
wash cycle which requires only occasional  
wiping down of inside grease extractor.  
The Thrift Island Series ventilators uses only  
one grease extraction chamber and is designed  
for 250-270 cfm/linear ft. on the cooking side  
and 150 cfm/linear ft. on the oven/steamer side.  
These units are provided with air adjustment  
baffles to "fine-tune" the balance of air from  
each side, and to change air velocity as job  
conditions dictate.  
1. Grease Extraction Chamber  
The front panel is hinged to facilitate  
access to the nozzles and grease  
extraction baffles.  
[Refer to fig.22]  
fig. 22  
To open, turn all front panel latches  
clockwise to the open [unlatched] position  
and swing the bottom of the front panel out.  
"Kickstands" are provided at each end of the  
fig. 23  
19  
 
F. After the temperature has dropped below  
300oF, the damper can be reset and opened  
by pushing the damper reset arm toward the  
plenum until it latches.  
If the fusible link has melted, it must be  
replaced before the damper can be reset. An  
access plate is provided.  
To adjust air intake slot, turn nuts to loosen,  
move air adjustment baffles up or down until  
the desired slot opening is obtained, and tighten  
nuts.  
E. Fire Dampers  
1. Fusible Link Type  
Some ducts are protected by fire dampers  
which are activated by a fusible link rated at  
360oF exhaust and 286oF supply When this  
temperature is exceeded, the fusible link  
melts allowing the fire damper to fall closed.  
This linkage should be inspected and the  
fusible links replaced annually. Fusible links  
in the exhaust duct collar are readily  
accessible by removing the baffle filters  
[Models AF] or grease extractor modules  
[Models AX]. [Refer to fig. 20 and 24] An  
access plate is provided for access [supply]  
duct collar for all models.  
When the damper is closed manually or if the  
fusible link melts and causes the damper to  
close, the fan and auto wash down are not  
affected.  
When the damper closes due to activation of  
the thermoswitch, the fan[s] will shut OFF and  
the auto wash will actuate.  
F. Air Make-Up [Supply] Plenums  
Ventilators may be supplied with four [4]  
different Air-Make-up plenums.  
Air is  
controlled by grill registers or a special E-Z  
Breeze perforated panel.  
1. Grill Registers [Refer to fig. 25]  
Grill registers are located for external  
discharge or both internal and external  
discharge.  
Internal register have fixed  
louvers for proper "Short Cycle" of air.  
External registers have four-way louvers for  
adjusting direction of air flow to suit job  
requirements. Grill registers have opposing  
blade dampers located on the rear of the  
fig. 24  
Electro-Mechanical Type [Refer to fig. 24]  
Some ducts are protected by fire dampers  
which are activated by heat sensitive  
thermoswitches located near the duct inlet.  
These switches close electrically at  
temperatures above 300o F and activate a  
solenoid which releases the damper, and  
energizes a relay which activates the plenum  
auto wash/fire extinguishing spray and  
deactivates the fan. In the event of a loss of  
power, the damper assembly also contains a  
fusible link, set at 360oF.  
FIRE DAMPER  
register. The airflow may be adjusted by  
turning the damper adjustment screwhead  
located just behind the louvers as shown in  
fig. 25.  
fig. 25  
2. E-Z Breeze [Refer to fig. 26]  
The damper can be manually closed by  
pulling down on the red knob at the end of the  
damper reset arm and allowing it to swing  
away from the plenum.  
The E-Z Breeze plenum is specially designed  
to slow the velocity of the supply air to  
minimize the energy costs incurred for  
tempering the air. The front perforated panel  
is removable for cleaning.  
provided to secure the panel in place after  
cleaning.  
If the damper has been activated by  
excessive temperature, it cannot be reset  
until the temperature has dropped below 300o  
Screws are  
20  
 
plenum area which runs whenever the fans  
are ON. This com- plements the baffle  
system on Energy Aire Systems and does not  
replace the wash down feature.  
Water  
pressure should be between 30-40 psig flow.  
I. Lights  
1. Surface Mounted - Incandescent  
To replace the bulb unscrew the globe.  
Fixture will accept bulbs up to a maximum of  
100 watts. Screw the bulb into the socket  
and then proceed to screw the globe tightly  
in position. Be sure that the inner silicone  
gasket is in place before installing the globe  
fig. 26  
3. Slot-Type Internal Air Make-Up  
Hoods provided with "Short-Cycle" type air  
make-up only are supplied with a slot which is  
designed to direct the air along the top of the  
hood and into the exhaust plenum inlet. The  
volume of air can be regulated through the  
use of a combination balancing damper and  
fire damper located on top of the air make-up  
plenum. [Refer to fig. 24]  
2. Recessed - Incandescent  
To replace the bulb, loosen screws which  
retain diffuser panel.  
Diffuser panel is  
attached to housing with a cable to prevent it  
from falling or becoming lost. Fixture will  
accept bulbs up to a maximum of 150 watts.  
3. Recessed - Fluorescent  
To replace bulbs, unscrew diffuser panel.  
The diffuser is attached to a housing with a  
cable to prevent it from falling or being lost.  
Two [2] bulbs are required for each fixture.  
G.Auto Wash  
Plenum wash down is a feature of the Energy  
Aire Ventilator which eliminates the need to  
frequently clean the grease extraction area.  
The wash down cycle normally occurs  
immediately after the cooking period and  
Fixture Size  
[nominal]  
24"  
Bulb Size  
[2] F20T12TS  
[2] F30T12RS  
[2] F40T12RS  
36"  
48"  
does not occur while the fans are ON.  
A
water/detergent mixture is sprayed from a  
series of nozzles to remove accumulated  
grease and grime which flows out through the  
drain. A vacuum breaker/check valve must  
be installed upstream of the detergent  
injection point [and a minimum of 6" higher  
than the ventilator inlet] to prevent detergent  
from backflowing into the building water  
supply. [Refer to fig. 14]. Hot water should  
be at 120oF and pressure must be between  
20 psig and 40 psig flow. The duration of the  
wash down cycle is adjustable and will vary  
depending of length of cooking cycle, type of  
cooking equipment used, concentration of  
detergent, water pressure and temperature,  
among other considerations. See Sec. VI, b.,  
"Setting the PAWS", for instructions.  
VIII. PERIODIC MAINTENANCE  
A.Baffle Filters  
Filters should be removed and cleaned at least  
weekly, depending on hours of operation.  
Filters may be cleaned by soaking in a strong  
detergent solution, or running thru  
a
dishwasher. When replacing, make sure filters  
and handles are running vertically, and filters  
are seated properly, refer to Sec. VII, A.1, pg.  
15.  
B.Modular Grease Extractors  
Modules should be removed and cleaned at  
least weekly, depending on hours of operation.  
Modules may be cleaned with a brush and a  
strong detergent solution, or run thru the  
dishwasher. When replacing modules, make  
sure they are seated properly, refer to Sec. VII,  
B.1, pg. 16.  
**Note: See Page 28 cut sheet for detergent  
information.  
H.Cold Water Mist [Optional]  
To aid in extracting particulates from the  
exhausted air and to aid in cooling the  
exhaust, a cold water mist option is available.  
This is especially useful with charbroilers.  
Cold water mist is a fine spray within the  
C.Grease Trough  
Should be checked weekly for grease build up,  
and cleaned with strong detergent, if  
necessary.  
21  
 
Cable tension can be adjusted by moving the  
eye-bolts in and out to ensure that the  
damper is fully open.  
D. Grease Collection Receptacle  
Should be emptied at least once a day, and  
cleaned daily with a strong detergent.  
fig. 27  
E. Hood Canopy  
2. Curtain Type [Refer to fig. 28]  
1. Inside hood canopy should be wiped  
down as needed. The area at the exhaust  
intake openings should be wiped down daily.  
When make-up air is brought directly into  
the capture area a fire damper is required at  
the duct collar. The curtain damper is  
equipped with a 212°F fusible link [P/N AS  
LNK0006]. Fusible links shall be replaced at  
least annually per NFPA 96, 8-2.1.2. New  
“s” hooks [P/N FA HOK0301] should be  
installed whenever the fusible links are  
2. Inspect inside of extraction chamber at  
least monthly, to insure proper cleaning and  
that the trough is free of foreign matter.  
replaced.  
These links are replaced by  
F. Detergent System  
unfolding the retaining strap and removing  
the clover hook and fusible link as a unit.  
Be careful to hold the curtain damper in  
place as a spring will try to pull it closed.  
1. Detergent tank should be checked at  
least weekly; and cleaned every six months.  
Always keep cover on tight to prevent  
spillage and evaporation.  
fig. 28  
2. A colloid type detergent, is recommended  
due  
to  
its  
non-caustic,  
non-toxic,  
biodegradable characteristics. It will not  
damage the rubber or synthetic parts of the  
pumping system.  
AVTEC recommends  
using EVAC Detergent. Available thru your  
local Service Agents or call Factory. See  
page 28 for more information.  
3. All fittings should be checked for air  
tightness at least monthly.  
4. Foot check valve should be cleaned every  
six months.  
G. Fusible Link Replacement  
1. Blade Type [Refer to fig. 27]  
Exhaust damper fusible links are rated at  
350°F [P/N AS LNK0302] and Air Make-  
up damper fusible links are rated at 286°F  
[P/N AS LNK0303]. Fusible links shall be  
replaced at least annually per NFPA 96, 8-  
2.1.2. New "S" hooks [P/N FA HOK0301]  
should be used whenever the fusible links  
are replaced.  
22  
 
IX. PARTS LIST  
A. PAWS PANEL - ELECTRICAL  
ITEM NO.  
AVTEC PART NO.  
DESCRIPTION  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
112-0301  
EL BLK0306  
EL BLK0307  
EL BLK0308  
EL FUS0304  
EL BLK0315  
EL SEN0305  
EL SWT0318  
EL STA0301  
EL HRN0301  
EL ASV0303  
EL TER0301  
EL RLY0317  
PP LBL0302  
PP LBL0303  
RP PRB0601  
Fuse Block Bracket  
Terminal Brass Screws  
Terminal Trac  
End Stop for 200-1018  
Fuse [SC-15]  
Fuse Block [Holder]  
Low Level Sensor [Detergent] PC Board  
Flush Toggle Switch  
Pull Station [Yellow]  
Sonalert Horn  
PAWS Assembly Model P10 & P20  
Output Term for Converting MAF/PAWS Assembly  
Output Relay for Converting MAF/PAWS Assembly  
PAWS Faceplate w/slot Silkscreen/Acrylic  
PAWS Faceplate no slot Silkscreen/Acrylic  
Detergent Probe Cut to Length  
B. VCW PANEL - ELECTRICAL  
ITEM NO.  
AVTEC PART NO.  
EL CNT0302  
EL CNT0348  
EL SWT0348  
EL SWT0351  
EL BLK0323  
DESCRIPTION  
Terminal Block Section  
1
2
3
4
5
Terminal Section End Stop  
Push Button w/Black Cap, Start Fan  
Push Button w/Red Cap, Start Wash  
Normally Open Contact Block  
[For part no. EL SWT0348 & EL SWT0351]  
Light Switch [20a]  
Fire Switch [Pull Station]  
Relay Socket [For part no. EL TMR0312]  
Omnetics Timer Relay]  
6
7
8
9
EL SWT0318  
EL STA0301  
EL RLY0315  
EL TMR0312  
C. PAWS/VCW PANEL - PLUMBING  
ITEM NO.  
AVTEC PART NO.  
HD TNK0301  
HD TNK0302  
PB SOL0301  
PB SOL0302  
PB SOL0303  
PB SOL0304  
PB SOL0305  
PB VLV500  
DESCRIPTION  
1
2
3
4
5
6
7
8
5 gal. Detergent Tank  
2 gal. Detergent Tank  
1/2" Water Solenoid  
3/4" Water Solenoid  
1" Water Solenoid  
1-1/4" Water Solenoid  
1-1/2" Water Solenoid  
1/2" Ball Valve  
9
PB VLV756  
3/4" Ball Valve  
10  
11  
12  
13  
14  
PB VLV750  
PB VLV790  
PB VLV0306  
PB VLV0311  
PB VLV0312  
1" Ball Valve  
1-1/4" Ball Valve  
1-1/2" Ball Valve  
1" Supervised Shut-Off Valve [Water]  
1-1/4" Supervised Shut-Off Valve [Water]  
23  
 
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
PB VLV0313  
PB VLV0302  
PB VLV0303  
PB VLV0304  
PB VLV0332  
600-1104  
1-1/2" Supervised Shut-Off Valve [Water]  
1/2" Check Valve, Br.  
3/4" Check Valve, Br.  
1" Check Valve, Br.  
3/8" Check Valve, Br.  
1/4" Check Valve, Br.  
1-1/4" Check Valve, Br.  
1-1/2" Check Valve, Br.  
1/2" Wye [Line] Strainer, B.I.  
3/4" Wye [Line] Strainer, B.I.  
1" Wye [Line] Strainer, B.I.  
1-1/4" Wye [Line] Strainer, B.I.  
1-1/2" Wye [Line] Strainer, B.I.  
1/2" Shock Arrestor  
1/2" Press/Temp. Gauge  
1/2" Vacuum Breaker, Br.  
3/4" Vacuum Breaker, Br.  
1" Vacuum Breaker, Br.  
1-1/4" Vacuum Breaker, Br.  
1-1/2" Vacuum Breaker, Br.  
3/4" Pressure Reducing Valve  
1" Pressure Reducing Valve  
1-1/4" Pressure Reducing Valve  
Single Head Diaphragm Pump [Detergent]  
Foot Valve  
PB VLV0305  
PB VLV0316  
HD STN0303  
PB WYE0301  
PB STN0306  
PB WYE0302  
HD STN0305  
PB SUP0301  
HD GGE0303  
PB BRK0301  
PB BRK0305  
PB BRK0302  
PB BRK0306  
PB BRK0312  
PB VLV0317  
PB VLV0326  
PB VLV0403  
HD PMP0301  
HD PMP0303  
PB VLV0342  
Check Anti-Syphon Valve  
D. EVAC DETERGENT  
ITEM NO.  
PART NO.  
FL DET0302  
FL DET0303  
DESCRIPTION  
EVAC 1 Gallon  
EVAC 5 Gallon  
1
2
E. ELECTRO - MECHANICAL DAMPER  
ITEM NO.  
AVTEC PART NO.  
FA SCW0301  
HD SPR0303  
HD SPR0304  
HD SPR0306  
HD KNB0301  
EL CNT0323  
EL CNT0348  
EL RLY0311  
HD SOL0313  
EL SWT 0323  
411-0226  
DESCRIPTION  
1-1/2" S/S Spring  
Damper Spring [Right]  
Damper Spring [Left]  
Solenoid Return Spring  
Red Knob [Damper]  
Terminal Section  
Terminal Section End Stop  
Fire Relay [Damper]  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
Damper Solenoid  
300oF, Normally Open Thermoswitch  
Electro-Mechanical Damper Instruction [Label]  
Convolution Boot  
AW Damper Linkage Assembly Complete  
350oF, Fusible Link  
Stainless Steel Cable  
HD BOT0301  
AS ASY0301  
AS LNK0302  
AS CBL0301  
AS SLV0301  
Crimp Sleeve (For S.S. Cable)  
24  
 
17  
18  
144-0901  
144-0902  
Small Linkage (Between 306-0000 and 144-0902)  
Large LInkage  
F. FUSIBLE LINK DAMPER  
ITEM NO.  
AVTEC PART NO.  
AS DMP1010B  
AS DMP1610B  
AS DMP2010B  
AS DMP3010B  
AS DMP4010B  
AS DMP1010C  
AS DMP1610C  
AS DMP2010C  
AS DMP3010C  
AS DMP4010C  
AS LNK0302  
FA BLT0303  
FA HOK0301  
AS CBL0301  
AS SLV0301  
AS LNK0303  
AS LNK0201  
306-0007  
DESCRIPTION  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
10" x 10" Balancing Damper  
16" x 10" Balancing Damper  
20" x 10" Balancing Damper  
30" x 10" Balancing Damper  
40" x 10" Balancing Damper  
10" x 10" Combo Balancing and Fire Damper  
16" x 10" Combo Balancing and Fire Damper  
20" x 10" Combo Balancing and Fire Damper  
30" x 10" Combo Balancing and Fire Damper  
40" x 10" Combo Balancing and Fire Damper  
Fusible Link 350oF  
Eye Bolt 3/16" x 2" - 10 - 24  
"S" Hook  
Stainless Steel Cable  
Crimp Sleeve [for S/S Cable]  
Fusible Link 286oF  
Fusible Link 212oF  
Clover Hook [Curtain Damper]  
G. HOOD CANOPY  
ITEM NO.  
AVTEC PART NO.  
HD LCH0304  
HD LCH0307  
DESCRIPTION  
Paddle Latch  
"Vice Action" Panel Latch  
16" x 16" S/S Filter  
20" x 25" S/S Filter  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
AS FLT1616SSR  
AS FLT2025SSR  
AS FLT2020SSR  
AS FLT2020ALR  
AS FLT1616ALR  
HD HGR0301  
AS FLT1620SSR  
AS FLT1620ALR  
AS FLT2016ALR  
AS FLT2025ALR  
AS FLT2016SSR  
AS GLB0201  
AS FXT0301  
AS LGT0001  
AS LGT1220  
AS LGT1420  
AS LGT1020  
AS LGT9901  
AS NZL0302  
20" x 20" S/S Filter  
20" x 20" Aluminum Filter  
16" x 16" Aluminum Filter  
Hanger Bracket [Ventilator]  
16" x 20" S/S Filter  
16" x 20" Aluminum Filter  
20" x 16" Aluminum Filter  
20" x 25" Aluminum Filter  
20" x 16" S/S Filter  
Incandescent Work Light Globe  
Incandescent Work Light Cage  
Incandescent Work Light Base  
3'-0" Fluorescent Work Light  
4'-0" Fluorescent Work Light  
2'-0" Fluorescent Work Light  
Recessed Incandescent Work Light  
Spray Nozzle, Br. No. 1/8 B-0.5-0.5W  
[Cold Water Mist]  
22  
23  
24  
25  
26  
AS NZL0303  
AS NZL0304  
PB CPL0316  
PB ADP0310  
PB FTG0311  
Spray Nozzle, Br. No. 1/8 GG-2.8W ]Water  
Spray Nozzle, Br. No. 1/8 GGA-1.5W ]Wash  
2” Expandable Coupler  
2” PVC XMPT Adapter  
2” Male PVC Fitting  
25  
 
Cleaner/Degreaser  
For Exhaust Ventilator Auto-wash Cleaner  
Cleaner/Degreaser  
Formulas at your fingertips  
In order to achieve maximum economy in the  
maintenance of your water-wash system, EVAC  
Cleaner/Degreaser can be diluted. Following are  
some suggested dilutions:  
Advantages  
UNIQUE, POWERFUL CLEANING FORMULA  
COOKING TYPE  
DILUTION SUGGESTED  
Medium daily cooking 1 part EVAC : 2 parts water  
v Tough enough to break down the worst oil and  
grease in your water wash system…leaving it  
Super Clean!  
Heavy daily cooking  
(No Charbroilers/solid  
fuel use)  
1 part EVAC : 1 part water  
Use Concentrate  
v Reduces the need for using environmentally  
Heavy daily cooking  
Charbroiling Solid fuel  
cooking  
harmful chemicals  
v Non-caustic and non-abrasive  
v Concentrated formula gives you more cleaning  
Note: There are multiple combinations of dilution, wash  
cycle length, frequency of washes, water temperature,  
and mechanical options possible for most systems.  
Consult experienced distributor/service agents for  
information regarding the best program for your  
institution.  
power for your money!  
v Compatible with bio-enzyme wastewater treatment  
products like TDW Grease Treatment  
v Exclusive factory detergent pump warranty  
v Can be used in all water-wash ventilators.  
Certified Biodegradable  
EVAC Cleaner/Degreaser is certified biodegradable by  
Scientific Certification Systems (SCS), an independent  
organization. SCS has established some of the  
nation’s strictest standards for environmental  
performance.  
AVAILABLE IN  
1/2 GALLON, 1 GALLON, 5 GALLON,  
30 GALLON AND 55 GALLON DRUMS  
Ask your Authorized Service Agency for these part numbers  
FL DET 0301  
FL DET 0302  
FL DET 0303  
1/2 GALLON  
1 GALLON  
5 GALLON  
26  
 
AIR MOVEMENT RECORDINGS  
(Supplement to Ventilator Installation/Start Up Report)  
Project Name  
Readings Taken by:  
A. ENERGY AIRE HOODS - EXHAUST  
1. Reading No. 1, 2, and 3 are taken at the front  
middle, and back of the intake slot.  
2. For 8 foot hood sections and less, take three  
[3] readings at each of three [3] locations:  
1 foot from each end, and one [1] reading in  
the middle.  
3. For hood sections over 8 feet in length, take  
three [3] readings at each of four [4] locations:  
1 foot from each end, and two [2] readings in  
the middle.  
4. B. FILTER HOODS - EXHAUST  
1. Take Reading No. 1, 2, and 3 on vertical  
centerlines.  
2. Refer to A.2, 3.  
C. SUPPLY PLENUM  
1. Reading No. 1 only is used.  
2. Take readings on horizontal centerline of grill.  
3. Refer to A.2, 3, but only one reading at each  
location  
AVTEC INDUSTRIES INC. 1055 MENDELL DAVIS DR. JACKSON, MS 39272 [888] 994-7636  
form no. 14018 1998 AVTEC Industries inc.  
27  
 
28  
 
CALCULATING AND RECORDING AIR MOVEMENT  
1.) Cubic feet per minute or CFM'S is the total area multiplied by the average feet per  
minute.  
A:  
CFM  
AREA  
FPM  
B: CFM = AREA x AVG. FPM  
FPM = CFM ÷ AREA  
AREA = CFM ÷ FPM  
2.) AREA is the length of the opening multiplied by the width in inches. Divide the total  
by 144 to get the total square feet (area).  
EXHAUST  
A: Filter Hoods - Area = *Square Feet x Quantity of Filters  
* 16 x 20 Filter = 1.75 Square Feet  
* 20 x 20 Filter = 2.25 Square Feet  
B: Extractor Type Hoods - Area = **Square Feet x Quantity of Modules  
16” Standard Module  
**Low Volume Extractor w/3" Slot = .32352 Square Feet  
**High Volume Extractor w/4" Slot = .43136 Square Feet  
9” Standard Module  
**Low Volume Extractor w/3" Slot = .1855 Square Feet  
**High Volume Extractor w/4" Slot = .2473 Square Feet  
C: Water Wash Hood - Area = Length of Slot x Width of Slot in inches and  
divided by 144 for square feet.  
SUPPLY  
A: Perforated Supply Air Panels - Square Feet of Panel x .4 = Area.  
B: Register Type Supply Air Panels - Square Feet of Panel x .7 = Area.  
29  
 
NOTE: AVTEC INDUSTRIES recognizes readings taken at the surface and not at the duct opening.  
Please refer to the Air Movement Recording Worksheet for proper location(s) to take readings.  
WARRANTY-  
AVTEC INDUSTRIES INC. warrants to the original purchaser for use of our products, that any part thereof which  
proves to be defective in material or workmanship under normal use within one year from date of installation, will  
be replaced free of charge, labor to replace such part is warranted for one year from installation. All warranty labor  
to be performed during regular working hours, with no overtime premium.  
All Warranty service must be authorized by the factory and be performed by AVTEC's authorized service  
personnel.  
This Warranty is limited to the United States and Canada.  
This Warranty does not apply to any damage resulting from shipping, improper installation, accident, unauthorized  
alteration, local codes not previously brought to the attention of AVTEC, misuse, or abuse; and does not cover  
loss of food, other products or damage to equipment or property resulting from mechanical or electrical failure.  
AVTEC neither makes nor assumes and does not authorize any other person to assume any other obligation or  
liability in connection with its products other than that covered in this Warranty.  
30  
 

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