Tr o u b l es h oo t in g l 6- 1 9
Problem
Delivery Air Temperature
Deviation – The delivery air
temperature exceeds the devi-
ation band as entered for the
specified time. Default values
are 10°F {6°C} for 5 seconds.
Delivery Air Low
Temperature – The delivery
air temperature is less than the
low temperature setpoint for
the specified time. Default
values are 70°F {21°C} for 20
seconds.
Possible cause
One of the solid state relays (SSRs)
failed in the closed position.
Defective delivery air heater.
The output on the board has failed.
The process RTD is loose or has fallen
out.
The air hose connections are loose.
Precooler water is too cold, or the water
flow rate is too high.
The output on the board has failed.
Flow control solenoid is stuck open.
The process RTD is loose or has fallen
out.
Delivery air heater has failed.
Solution
Replace the failed solid state relays (SSRs).
Check the heater fuses and resistance
across each leg of the delivery air heater.
Replace the board.
Check the process RTD and tighten if
needed.
Tighten all air hose connections.
Check water temperature and flow settings.
Adjust as necessary.
Replace the board.
Replace the valve.
Check the process RTD and tighten if
needed.
Check the heater fuses and resistance
across each leg of the delivery air heater.
When supplied for central
drying applications, these pas-
sive alarms are not available.
6
Tr ou bleshooti ng
Pa ss i v e Ala r ms
If an alarm occurs, a red dialog box is displayed on the dryer’s touch screen control. The
dryer continues to operate, but this problem could prevent correct drying of your material.
The dialog box will indicate whether the alarm is a shut down alarm or a passive alarm.
NOTE: This alarm is factory
defaulted to OFF.
✐
NOTE: This alarm is factory
defaulted to OFF.
✐
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