Alarms
• Shutdown (A#): The dryer has automatically shut down because it has detect-
ed a serious problem that could damage your material or dryer.
• Passive (P#): 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.
6-20 l Troubleshooting
Problem
A57 - 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.
Overload is defective.
Solution
Press alarm acknowledge and allow
overload to reset automatically, then try
to restart the dryer. If the alarm condi-
tion occurs again have a qualified elec-
trician 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 overload
to reset automatically, 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 overload to reset
automatically, then try to restart the
dryer.
Check for a blown fuse in the dryer or
main power supply.
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 overload to reset auto-
matically, then try to restart the dryer
Replace the overload.
NOTE: Once the overload
has tripped you must wait
2 - 15 minutes with
power on for it to reset
automatically.
✐
To Next Page
Loading...
