Greenheck Fan Greenheck 474750 - Manual (Page 7)

7 Digital Temperature Interlock
Operation
1. Turn fans on and off using the fan switch. It is normal
for the fans to remain running after the switch is
turned off. The exhaust temperature controller will
open after heat is no longer present under the hood
and the temperature is below the set point plus
hysteresis, the fans shall shut down.
2. 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 plus hysteresis,
the fans shall shut down.
Testing
1. Turn fan switch on, then off to ensure proper fan
operation before cooking equipment is started. Once
this is verified, testing can proceed.
2. Heat up cooking equipment with fans off. Once the
temperature reaches the set point of the temperature
controller the fans will start within 5 minutes. If the
fans take more than 5 minutes to start, decrease the
temperature set point by adjusting the set point on
the temperature controller (see Calibration).
3. If an adjustment was made in Step 2, repeat now.
4. 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 plus hysteresis, the fans will shut down.
CAUTION
The probes should never be exposed to direct flame.
The probes are rated up to 250°F.
CAUTION
EXPOSING THE SENSOR TO DIRECT FLAME MAY
RENDER THE SENSOR INOPERABLE AND WILL
VOID THE WARRANTY.
NOTE
During testing, if fans do not start automatically in
the first 10 minutes of cooking equipment activation,
manually start fans to avoid accidental fire system
dump due to heat build-up.
Troubleshooting
1. Controller(s) display E01 or E02 and fans will
not shut off.
• E01 and E02 represent probe faults
• Check probe resistance between the two leads
when disconnected from the system. At room
temperature (77°F), the probe will read 1025 ohms
• Check wiring connections between the sensor
and control cabinet
2. Fans do not turn on automatically upon
cooking equipment activation.
• Check wiring to control panel or relay box
• Multiple sensors must be wired separately
• Temperature set point too high, decrease set point
• No power to fans, check breakers/starters/relays
3. Fans do not shut off.
•
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 1 above.
• Switch must be in the off position
• Cooking equipment hot, wait for it to cool
• Temperature set point too low, increase set point
• Ensure wires are connected to appropriate control
circuit
4. Fans do not turn on quick enough.
• Decrease temperature set point
Maintenance
Daily
Clean the temperature sensor with cloth and degreaser.
Keep clean for best performance.
Weekly
Dependant on grease production and grease filter type,
clean temperature sensor.
Seasonal
May have to change temperature setting on the
temperature controller if ambient kitchen temperatures
fluctuate between summer and winter seasons.
Whom to call
Contact your local Greenheck representative.
What to have ready for the call
Sales order, serial number and description of product.
Sales Order Number ________________________
Serial Number ______________________________
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