Donaldson Company, Inc.
24
Troubleshooting, continued
Problem
Probable Cause
Remedy
Filter Rupture fault light
on diplay panel ON
Collapsed or ruptured
filter cartridge
Check for visible dust in the discharge airstream.
Replace filters as necessary.
Airflow control
damper closed rapidly
Reset damper settings.
Motor failure
Check fuses and circuit breakers. Replace or reset as
needed. Reset motor.
Filter Plugged fault light
on display panel ON
Filter cartridge needs
replacement
Replace filter cartridges as a complete set.
Low compressed air
pressure
Supply 90 to 100 psi compressed air to units
manifold.
Setpoint adjustment is
incorrect
Set the START CLEAN setpoint above the normal
differential pressure.
Temperature fault light
on display panel ON
Incoming air
temperature exceeds
the rating of the filter
cartridge
Replace existing cartridges with cartridges having a
higher temperature rating. Contact your Donaldson
Torit representative to reset the fault indicator
setpoint.
Fire
Extinguish fire and replace cartridges as required.
Eliminate all sources of ignition before restarting the
unit.
Short circuit
Check twisted pair wire. Replace if damaged.
Water in thermowell
Replace thermowell assembly.
Service Interval fault light
on display panel ON
Timer function time
elapsed
To reset the indicator light, press the OFF button,
perform the service, press the Service Interval Light
Reset button, and return to service.
External device
function
Perform service indicated by the external device and
reset as above.
Blower Overcurrent fault
light on display panel ON
Faulty motor
Repair or replace as required.
Airflow exceeds the
rated flow
Adjust inlet or outlet dampers.
Lack of proper flow
restriction device or
access from ambient to
clean- or dirty-air
chamber open.
Close hopper discharge or other openings. Do not
operate unit without inlet duct in place.
