6 - 1 8
l Tr o u b l e s h o o t i n g
Problem
Process Filter Clogged (Op-
tion)
– The process filter differ-
ential pressure switch is tripped.
Return Air Temperature RTD
Integrity
– The dryer continues
to run with a passive alarm.
(The return air temperature on
D 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.
P a s s i v e A l a r m s
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.
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Summary of Contents for Carousel Plus D Series
Page 6: ...iv l Table of Contents...
Page 20: ...2 8 l Description...
Page 40: ...3 8 l Installation...
Page 54: ...4 14 l Operation Control Function Flow Charts From the Login Logout screen Home Login Screen 3...
Page 90: ...4 50 l Operation...
Page 112: ...5 16 l Maintenance...
Page 208: ...C 46 l Appendix...