Troubleshooting l 6-11
6
Troubleshooting
Problem
Regeneration Blower
Overload - If the regenera-
tion blower exceeds its full
load amp rating or the over-
load has tripped due to a
mechanical or electrical prob-
lem the dryer will shut down.
Possible cause
The regeneration blower current draw
has exceeded the full load amps rating
of the motor.
The regeneration blower has mechani-
cally failed or is unable to rotate freely.
The regeneration blower has failed
electrically.
Loss of phase of power to the motor
starter.
The overload is set incorrectly.
The overload is defective.
Solution
Press alarm acknowledge and allow the
overload to reset then try to restart the
dryer. If the alarm condition occurs
again have a qualified electrician check
the current draw to the motor.
Disconnect and lock out main power.
Check the regeneration blower for
mechanical failure and free rotation.
Replace if necessary. Allow the over-
load to reset then try to restart the
dryer.
Disconnect and lock out main power.
Check the regeneration blower for elec-
trical shorts or open circuits. Replace if
necessary. Allow the overload to reset
then try to restart the dryer.
Check for a blown fuse in the dryer or
main power supply. Allow the overload
to reset then try to restart the dryer.
Disconnect and lock out main power.
Check the overload settings and con-
firm that the settings match the full
load amps listed on the process blower
motor. Allow the overload to reset then
try to restart the dryer.
Replace the overload.
✐
NOTE: Once the overload
has tripped, you must wait 2
to 15 minutes with the
power on for the overload to
reset automatically.
Shutdown Alarms
If the red Acknowledge Alarm LED is blinking, the alarm is a shutdown
alarm. The dryer will shutdown automatically to prevent damage to the
equipment or personnel. Note that once the Acknowledge Alarm button is
pressed once, the blinking red LED becomes solid.
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