Precision Control Systems DryIR 6040 - Manual (Page 15)

Model 6040 Dry IR Drying System Instruction Manual
Troubleshooting
PROBLEM SOLUTION
Lamps do not come on
Make sure the fan is spinning. Check that the supply voltage is 240
VAC.
Check the Interlock connection. Power must be applied to the interlock
before the lamps will turn on. Make sure that the proper relay is
installed.
Make sure that the heater is in the heating position.
Check the tach signal. The tach signal should be 0-10 VDC, 0 is lamps
off 10 V is maximum power. Set the heater to manual mode. If the
lamps come on, check the signal from the tachometer. Try switching
the wires on the tach.
If the unit is controlled by a thermocouple, disconnect the
thermocouple. This will switch the controller to manual mode. Increase
the manual output and see if the lamps come on.
Check that CR1 has power and is energized. Check that the correct
relay has been installed.
Circuit breaker does not
stay on. The undervoltage trip is not getting power. Check that the undervoltage
trip has 24 Vdc. Verify that the power supply is producing 24vdc.
Check for short circuits to ground.
Check the supply voltage is 240 VAC.
Check the thermostat to see if it is working properly and that the unit in
not overheating.
Only some of the lamps
come on. Check for burned out lamps.
Make sure that the lamp leads have a good connection to the terminal
blocks. Make sure that the terminal blocks are not clamped on the lead
wire insulation.
Fan does not rotate. The fan should come on as soon as the breaker is turned on. If the
breaker does not trip out, power is being applied to the system. Check
the fan wiring and connector and check the incoming power.. Replace
fan if required.
Lamps do not turn off.
The lamp control relay is getting a faulty signal. Check the wiring
connections to the control module. Replace the module if necessary.
The solid-state relay has failed. Replace the control module.
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