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Operation
1 . Turn fans on and off using the fan switch .
2 . If KFCC is configured to control hood lights, turn
hood lights on and off using the light switch .
3 . If KFCC is configured with digital style
temperature interlock, it is normal for the fan(s) to
remain running after the switch is turned off . The
exhaust temperature controller will shut down fans
after heat is no longer present under the hood and the
temperature is below the set point . In the event that
the cooking equipment is started without turning the
fans on manually, the fans will turn on automatically
and remain running with the presence of heat under
the hood . Once the temperature is below the set
point, the fans will shut down .
4 . If KFCC is configured with thermostat style
temperature interlock, it is normal for the fan(s) to
remain running after the fan switch is turned off . The
exhaust thermostat will open after heat is no longer
present under the hood which will activate the timed
relay to begin its countdown . Once time has expired,
fans will shut down . The timed relay is adjustable
from 1-100 minutes . The recommended time delay
setting is approximately 20 minutes .
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Troubleshooting
1. Fan(s) do not turn on automatically upon cooking
equipment activation
• Confirm that the KFCC has been configured with
temperature interlock, either thermostat style or
digital style .
• Check wiring to control panel . With thermostat style
interlock, thermostats must be wired in parallel . With
digital style interlock, sensors must be wired to the
control panel separately .
• Temperature set point is too high, decrease set point .
• No power to fan(s), check breakers/starters/relays .
2. Controller(s) in KFCC display EP1 or EP2 and EP3
fan(s) will not shut off.
• EP1, EP2 and EP3 represent sensor errors .
• Disconnect the sensor from the system, and check
resistance between the two wires on the sensor . At
room temperature (77°F or 25°C), the sensor should
read 1097 .4 ohms .
• Check wiring connections between the sensor and
control cabinet .
3. Fan(s) do not shut off.
• Fan switch must be in the off position .
• If the KFCC is configured with digital style
temperature interlock, check the controller to
determine if there is a sensor error of EP1, EP2 and/
or EP3 . If yes, refer to the controller display error
message, item 2 above .
• Cooking equipment is still hot, and the KFCC is
configured with temperature interlock . Wait for the
equipment to cool .
• Temperature set point for temperature interlock is set
too low, increase set point .
• Check control circuit (fan starter) wiring .
4. Exhaust fan(s) will not shut off, and supply fan(s)
will not turn on.
• Check hood for fire system dump .
• If no fire system dump has occurred, check fire
system wiring between fire system microswitch and
control panel .
5. Fan(s) do not turn on quick enough.
• Decrease temperature set point
Kitchen Fan Control Center
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