6-4 l Troub les ho ot in g
How to Identify the Cause of a
Problem
Most dryer alarms are indicated by an illuminated Acknowledge Alarm light on
the MDCW Dryer control panel. Shutdown alarms will sound a horn and turn on
the alarm beacon.
A problem can trigger two types of alarms:
• Shutdown: The dryer has automatically shut down because it detected a
serious problem that could damage your material or dryer.
• Passive: The dryer continues to operate, but warns of a problem that could
prevent correct drying of your material. If ignored, this problem could lead to a
condition that will shut down the dryer.
When the alarm light is displayed:
1 Press the Acknowledge Alarm button once to silence the
optional audible alarm and display the alarm message.
Pressing the Acknowledge Alarm button once also changes the alarm LED from
blinking to solid.
2 Find the error message in the diagnostics table of this Troubleshooting
section. Use information provided to diagnose and resolve the cause of the
alarms.
3 Note that pressing the Acknowledge Alarm button a second time will clear
the alarm once the cause has been corrected. If the alarm reappears, the cause
has not been resolved.
NOTE: When the dryer detects abnormally high temperature in the process heater, the
dryer immediately shuts down and an error message appears in the display window.
Auto Start
Dewpoint Control
Set-Back Temp.
Process Blower
Process Heater
Regen. Blower
Regen. Heater
Acknowledge
Alarm LED and
Button
✐
✐
NOTE: Pushing the
Acknowledge Alarm button
when there is no active alarm
will take the user directly to
the Alarm History list (Screen
95, page 4-34).
NOTE: The dryer cannot be
started if a passive alarm is
present on power-up.
✐
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