Testing - Greenheck KFCC Installation, Operation And Maintenance Manual

Testing

1. Turn the fan switch(es) on, then off to ensure proper
fan operation before cooking equipment is started.
Once this is verified, testing can proceed.
2. If applicable, turn the light switch(es) on, then off to
ensure proper light operation in the hood. Once this
is verified, testing can proceed.
3. Press and hold down the fire suppression switch
connected to the KFCC and verify that the
corresponding exhaust and/or supply fan(s) react
appropriately when in the fire state. Verify all shunt
trip breakers, alarms, and other components
utilizing any of the spare relay contacts in the KFCC
are activated properly.
4. If the KFCC is configured with thermostat style
temperature interlock, please follow steps 5
through 9 below. If the KFCC is configured with
digital temperature interlock, please follow steps
10 through 12.
5. For testing only, locate the time delay relay. Turn the
time adjustment knob counterclockwise to the first
mark in order to expedite the testing process. Make
a note as to where the timed relay was originally set.
6. Heat up cooking equipment with fans off. Once the
temperature reaches the set point of the thermostat
the fans will start, preferably within 5 to 10 minutes.
If the fans take more than 15 minutes to start,
decrease the temperature set point by turning the
adjustment screw 1/16 turn clockwise. Do not apply
direct flame to the thermostat.
7. If an adjustment was made in Step 6, repeat now.
8. After verification of fan start-up, shut down cooking
equipment. The fan switch should still be in the off
position. Once cooking equipment has cooled, the
thermostat will open triggering the timer function
in the time delay relay to begin. Once time has
expired, the fans will shut down. Thermostat
operation can be verified by checking voltage
(115 VAC) between terminal blocks T1-B and N1 on
the control panel. 115 VAC will be present when the
thermostat senses heat.
9. Once proper operation has been verified, set
the dial on the timed relay to its original setting
(approximately 20 minute delay).
10. With the fans turned off by the fan switch, turn on
at least one piece of cooking equipment under
the hood. The fans should automatically start
within 5 to 10 minutes. If the fans take more than
15 minutes to start, decrease the temperature set
point(s) on the temperature controller (see Digital
Style Temperature Interlock Configuration, page 13).
11. If an adjustment was made in Step 10, repeat now.
12. After verification of fan start-up, shut down cooking
equipment. The fan switch should still be in the
off position. Once cooking equipment has cooled
below the set point, the fans will shut down.
18 Kitchen Fan Control Center
CAUTION
If provided with temperature interlock, the sensors/
thermostats should never be exposed to direct flame.
Exposing a sensor/thermostat to direct flame may
render the sensor/thermostat inoperable and will void
the warranty.
NOTE
During testing, if the KFCC is configured with
temperature interlock and fans do not start
automatically in the first 15 minutes of cooking
equipment activation, manually start fans to avoid
accidental fire system dump due to heat build-up.
®