6
Troubleshooting
Troublesho oti ng l 6-15
Problem
Return Air Temperature
RTD Integrity – The dryer
continues to run with a passive
alarm.
Machine Loader Conveying
Demand - The demand sensor
located at the material receiver
has not been satisfied after
three consecutive attempts.
Possible cause
There is a loose connection in the wiring
leading to the RTD.
The connection of the RTD plug on the
control board is loose.
The return air RTD has failed.
The central board has failed.
Sensor is out of position.
The sensor is not adjusted properly.
No material is being conveyed.
The conveying load time is too short or
the delay time is too long.
Conveying blower is not coming on.
The conveying filter is clogged.
Hoses have come off or are loose in the
conveying loop.
Solution
Check the RTD plug connections, make
necessary repairs.
The connection of the RTD plug on the
control board is loose.
Replace return air RTD.
Replace central board.
Raise the sensor to a higher / lower posi-
tion on the bracket.
Adjust the sensitivity of the sensor.
Check for material in the hopper. Make
sure the slidegate is not closed.
Increase the load time setpoint or short-
en the delay time.
Check the blower fuses in the control
and the overload settings.
Clean or replace the conveying filter.
Check for loose hoses and make sure all
hose clamps are secure.
Passive Alarms
If the amber Acknowledge Alarm LED is blinking, the alarm is a passive alarm.
The dryer continues to operate, but this problem could prevent correct drying of
your material. Note that when the Acknowledge Alarm button is pressed once, the
blinking amber LED becomes solid.
NOTE: Passive alarms can be configured as shutdown alarms (see the previous Shutdown Alarms
section). See page 4-26, screen 62 for instructions.
✐
To Next Page
Loading...
Need help?
General
