MODEL KA7EVH VENTLESS HOOD
MODEL
KA7EVH ML-137712
701 S. RIDGE AVENUE
TROY, OHIO 45374-0001
937 332-3000
www.hobartcorp.com
F35535 (03-09)
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MODEL KA7EVH VENTLESS HOOD
GENERAL
The KA7EVH is a vent-less hood that replaces the need for a conventional hood over a KA7E rotisserie
oven when installed and interlocked to the oven with hood kit accessory. The rotisserie oven’s grease laden
vapors are captured by the hood with a three stage ltration system.
The hood must be installed and operated with the designed airow, lters and construction in accordance with
this manual. Hood top must never be used for storage as it will block air ow and inhibit proper operation.
LISTINGS
The KA7EVH hood is certied to NSF standard 2. It is ETL Listed to Standard UL-710B and
EPA test method 202 when installed in accordance with installation instructions provided by Hobart, and
National Fire Protection Association Standard “NFPA 96, Standard for Ventilation Control and Fire Protection
of Commercial Cooking Operations.” This hood is not provided with an integral re extinguishing system.
Authorities having jurisdiction should be consulted as to the requirements for this equipment with respect to
re extinguishing systems such as the need for eld installed systems in accordance with NFPA 96.
ACCESSORIES (ALSO SEE FILTER SECTION)
• Hood Kit or Hood Stacking Kit (required for installation)
• HEPA lter
• Charcoal lter
• Grease Bafe lter
ELECTRICAL SUPPLY
Volts Hertz Phase Amps
120V 60 1 15A
LOCATION
Installation location must allow adequate clearances for servicing and proper operation of hood and rotisserie.
Hood requires 18" clearance to ceiling. Allow adequate left side clearance to access lters in hood. Refer
to KA7E INSTRUCTIONS 0F-035521.
UNPACKING
Immediately after unpacking the hood, check for possible shipping damage. If the hood is found to be
damaged, save the packaging material and contact the carrier within 15 days of delivery.
INSTALLATION
After hood is mounted to oven, hood must be interlocked to oven with accessory Hood Kit or accessory
Hood Sacking Kit.
Refer to KA7EVH INSTALLATION INSTRUCTIONS, 0F-025333.
© HOBART, 2009
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MODEL KA7EVH VENTLESS HOOD
OPERATION
CONTROLS
Airow Reset
Fan On
Fan Auto
Power Light
(GREEN)
Error Light: Airow
(YELLOW)
Error Light:
Temperature High Limit
(RED)
Hood Switch Plate
Fan ON switch position
Turns the hood fan on. The hood fan runs continuously.
Fan AUTO switch position
The hood fan turns on automatically when the oven on/off rocker switch is turned on.
The hood fan turns off automatically 30 minutes after the oven on/off rocker switch is turned off. The auto
switch position is recommended for energy savings.
Power Light (GREEN)
This (GREEN) light indicates that there is power to the hood.
Error light: Airow (YELLOW)
This (YELLOW) light indicates that there is a low or high airow condition. Because the hood is not operating
properly, the interlock control turns the oven heaters off.
The oven stops cooking. The oven display will indicate cooking but the heaters are off.
If the airow error cannot be immediately corrected, manually abort the cook cycle.
Incorrect airows are a result of clogged or missing lters, loose access panels, intake or discharge blockage. This
condition must be corrected before normal operation of the oven and hood can resume. (See Troubleshooting.)
Airow Reset Button
Push the airow reset button after correcting an airow error condition (clogged or missing lters, loose
access panels, intake or discharge blockage). Once the reset button has been pushed, the internal airow
switch will verify that the airow is correct and the (YELLOW) light will go out.
Error light: High Temp Light (RED)
If this light turns on, call Hobart Service.
This (RED) light indicates that the hood has overheated. Because the hood is not operating properly,
the interlock control turns the oven heaters off.
The oven stops cooking. The oven display will indicate cooking but the heaters are off. Manually abort the
cook cycle. Cooking cannot be resumed until the problem is corrected by Hobart Service.
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MODEL KA7EVH VENTLESS HOOD
FILTERS
The hood is provided with a three-stage air purication system, which consists of a grease bafe lter,
a HEPA lter and a charcoal lter. This hood has been tested and complies with EPA Test Method 202,
Determination of Condensable Particulate Emissions from Stationary Sources. Use only the lters listed in
the chart below. Failure to use proper lters will void the warranty of the hood. Filters must be installed and
positioned as shown below in Figure 1.
Figure 1. Filter Stages
Filter Part Numbers
Stage Description Part Number Filter Size
1
HIGH EFFICIENCY
GREASE BAFFLE FILTER
877721 16 X 16 X 2
2 HEPA FILTER 877719 11
3
/8 X 11
3
/8 X 2
3
/4
3 CHARCOAL FILTER 877720 11
3
/8 X 11
3
/8 X 3
3
/4
Stage 1 – Grease Bafe Filter
Figure 2.
HE Grease Filter
Stage 1 is a grease bafe lter that is used to capture larger grease particulates.
Stainless steel construction provides durability and corrosion resistance. This
lter protects blower equipment and prolongs motor life. These lters are UL
Listed and meet requirements of NFPA96 when properly installed.
The Stage 1 Grease Bafe Filter must be kept clean. Inspect this lter weekly and
clean if necessary; cleaning frequency will depend on cooking loads. Keeping this
lter clean will prolong the life of the other lters. Do not substitute lter for another
brand. Failure to use the proper lter will void the warranty of the hood.
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MODEL KA7EVH VENTLESS HOOD
Stage 2 – HEPA Filter
Figure 3.
HEPA Filter
HEPA lters are used to capture smaller particulates. The HEPA lter in this hood
is rated 99.9995% @ .12 Micron PSL/Laser.
When installing lter, make sure the airow arrow on the lter is pointing toward
the blower wheel. Make sure spring loaded clips snap in place. This lter must
be in place per Figure 1.
The Stage 2 HEPA Filter cannot be washed. The life of this lter will depend on
cooking loads and must be replaced as needed. Do not substitute lter for another
brand. Failure to use the proper lter will void the warranty of the hood.
Stage 3 – Charcoal Filter
Figure 4.
Charcoal Filter
Charcoal lters are used for odor control. The lter used in this hood contains
high quality, virgin coconut shell with superior pore size distribution specically
selected for its wide absorptive capacity.
When installing lter, make sure the airow arrow on the lter is pointing toward
the blower wheel. Make sure spring loaded clips snap in place. This lter must
be in place per Figure 1.
The Stage 3 Charcoal Filter cannot be washed. The life of this lter will depend on
cooking loads and must be replaced as needed. Do not substitute lter for another
brand. Failure to use the proper lter will void the warranty of the hood.
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MODEL KA7EVH VENTLESS HOOD
MAINTENANCE
Disconnect the electrical power to the machine and follow
lockout/tagout procedures. There may be multiple circuits.
Be sure all circuits are disconnected.
GENERAL MAINTENANCE
1. All surfaces must be kept free of grease build-up for sanitation reasons and to reduce the risk of re.
2. Grease Bafe Filter must always be installed and cleaned to reduce build-up of grease in the exhaust
duct and to allow for proper exhaust airow.
3. HEPA and Charcoal Filters must be replaced on a regular basis depending on usage.
WEEKLY MAINTENANCE
1. Remove the Grease Bafe Filter and clean in a dishwasher weekly.
2. Clean bafe lter area (including inside of cover) weekly while bafe lter is removed for cleaning. Use
soft cloth and warm soapy water. Rinse and wipe dry.
3. Clean and dry exterior hood surfaces.
Do not clean with a high pressure hose
Do not use iron wool (Brillo or SOS pads), scrapers, or spatulas to clean hood!
Do not use the following substances on or around the hood:
Chlorine or chlorine based substances.
Acids (e.g. acetic, hydrochloric, sulfuric).
Chloride based substances (e.g. mercuric chloride, ferric chloride).
QUARTERLY MAINTENANCE
1. Remove and inspect HEPA Filter. Replace if necessary.
2. Remove and inspect Charcoal Filter. Replace if necessary.
3. While lters are removed, clean hood ductwork to prevent an accumulation of grease.
4. Inspect the blower wheel and remove any grease or debris.
5. Inspect the hood access panels for damage or missing seals that may cause air leaks.
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MODEL KA7EVH VENTLESS HOOD
TROUBLESHOOTING
Problem Potential Cause Corrective Action
Power (GREEN) light off No power to hood Hood not plugged in / or check
circuit breaker.
Airow Indicator
(YELLOW) light on
Incorrect amount of airow Filters missing or clogged.
Panels / doors missing or not
installed properly
Replace access panels / doors.
Intake or discharge is blocked Inspect / clean ductwork as
needed.
Airow reset button hasn’t been
pushed
Push reset button.
Exhaust fan not running Call Hobart service.
Airow reset does not turn
off yellow light / yellow light
comes back on in 5 seconds
after reset pressed.
Incorrect amount of airow Filters missing or clogged.
Panels / doors missing or not
installed properly
Replace access panels / doors.
Intake or discharge is blocked Inspect / clean ductwork as
needed.
Oven display indicates
cooking but heaters are off
Hood / oven interlock circuit has
activated
Check Air Flow indicator
(YELLOW) light.
Check High Limit Indicator (RED)
light.
High Limit Indicator (RED)
light on
High Temperature Limit tripped Call Hobart service to correct
cause of the high temperature,
and reset high limit.
Hood is vibrating Vibrating exhaust blower Remove lters and check for
obstructions in blower wheel.
A rag or other debris may be
stuck in blower wheel.
Smoke is not being
captured / Low Exhaust
Filters are clogged Clean grease bafe lter.
Replace HEPA lter.
Replace Charcoal lter.
Grease dripping from hood Hood not being cleaned often
enough
Clean hood more frequently.
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MODEL KA7EVH VENTLESS HOOD
F35535 (03-09) PRINTED IN U.S.A.
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