Sterling 882.00290.00 User Manual

The process 
temperature has 
exceeded the alarm 
set point. 

The process heater 
contactor has failed in the 
closed position. Check 
heater contactor, replace if 
necessary. 

Check the Process Heater 
box high temperature snap 
switch, replace if necessary 

The high temperature 
snap switch of the 
process heater box 
has tripped. 

The Regeneration heater 
contactor has failed in the 
closed position. Check 
heater contactor, replace if 
necessary. 

 

The high temperature 
snap switch on of the 
regeneration heater 
boxes has tripped 
 
 

Check the high temperature 
snap switches on the 
regeneration heater 
mounting plates, replace if 
necessary. 

- Dryer Shuts down: 
- Process blower OFF. 
- Process heaters OFF. 
- Regen heaters OFF. 
- Alarm light is ON 
- Alarm horn is ON. 

Make sure the process air 
filter is clean. Clean or 
replace if necessary. 

The process blower 
pressure switch did not 
detect enough 
pressure. 

Check the rotation of the 
blower. 

Process blower 
overload has tripped. 
Process blower motor 
has failed. 

Check the pressure switch 
hose connection. Replace 
hoses or the pressure 
switch. 
Check the over load rating 
against the wiring diagram. 
Adjust accordingly. 
Check the wiring of the 
blower. Make sure it is wired 
for the proper voltage. 
Check the process blower 
fuses for any fault. Replace 
if necessary. 
Check the blower motor 
starter. Replace if 
necessary. 
Check the blower motor. 
Replace if necessary. 

Lose contacts or wires. 

Check the incoming voltage 
against the name plate of 
the dryer. 

 

 
 
 
 
 
 

Dehumidifying Dryers 

6Troubleshooting 

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