6 - 1 8 l Tr o u b l e s h oo t in g
Problem
Process Filter Clogged
(Option) – The process filter
differential pressure switch is
tripped.
Return Air Temperature
RTD Integrity – The dryer
continues to run with a passive
alarm. (The return air temper-
ature on W Series Dryers is
measured at the inlet to the
desiccant wheel.)
Wheel Rotation Failure - The
regeneration temperature
differential has been reached.
The default differential is 20ºF
/ 10 seconds.
Possible cause
The process air filter is clogged.
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 control board has failed.
The wheel motor is not turning.
The belt tensioner is loose or the belt is
slipping.
The regeneration heater is not working.
Solution
Remove and clean or replace the process
air filter.
Check the RTD plug connections and
make any necessary repairs.
Check the plug connection and tighten if
needed.
Replace the return air RTD.
Replace the control board.
Check the motor, plugs, and fuses.
Change the tensioner spring or replace
the belt.
Check the heater fuses and heater.
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 cor-
rect 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.
✐
To Next Page
Loading...
Need help?
General
