Conair W Series User Manual page 105

Pa s s i v e A l a r m s
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.
i
Problem
Process Filter Clogged
(Option) – The process filter
differential pressure switch is
tripped.
CFM Low (Option) - The
CFM calculated from the
process blower differential
pressure is less than the
setpoint (1 CFM for 30 seconds
- see screen 66) entered on the
operator display.
Return Air Temperature
RTD Integrity – The dryer
continues to run with a passive
alarm.
NOTE: Passive alarms can be configured as shutdown alarms (see the previous Shutdown Alarms
section). See page 4-25, screen 62 for instructions.
Possible cause
The process air filter is clogged.
The air hoses are loose, blocked, or
kinked.
The return air filter needs to be cleaned.
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.
Solution
Remove and clean or replace the process
air filter.
Check the process air hose for secure
connections, straighten any blocked or
kinked hose.
Clean and/or change the return 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.
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