Greenheck Kitchen Fan Control Center (475730) - Manual (Page 17)

17 Kitchen Fan Control Center
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(s) contacts will
open after heat is no longer present underneath the
hood(s), the temperature is below the set point and
the fan(s) have at least been running for 5 minutes.
When the controller contacts opens, the fan(s) shall
shut down. In the event that the cooking equipment
is started without turning the fan(s) on manually, the
fan(s) will turn on automatically and remain running
with the presence of heat under the hood. The
temperature plus a 5°F hysteresis in order to turn on.
Once the temperature is below the set point and the
fan(s) have at least been running for 5 minutes, the
fan(s) 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(s) will open after heat is no
longer present under the hood, which will activate
the timer to begin its countdown. Once the time has
expired, fan(s) will shut down. The timer is adjustable
from 1-100 minutes. The recommended time delay
setting is approximately 20 minutes. In the event that
the cooking equipment is started without turning the
fan(s) on manually, the fan(s) will turn on automatically
and remain running with the presence of heat
underneath the hood. The exhaust thermostat(s) will
open after heat is no longer present under the hood,
which will activate the timer to begin its countdown.
Once time has expired, fan(s) will shut down.
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 E01 or E02 and
fan(s) will not shut off.
• E01 and E02 represent sensor faults.
• Check wiring connections between the sensor and
control cabinet.
• Check probe resistance between the two leads
coming off the sensor when disconnected from the
system. At room temperature (77°F) the probe will
read approximately 1025 ohms.
3. Fan(s) do not shut off.
• Manual 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 probe error of E01 or E02. 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.
• Ensure wires are connected to appropriate control
circuit.
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
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