21
Donaldson Company, Inc.
Problem
Probable Cause
Remedy
Insufficient airflow
continued
Lack of compressed air
See Rating and Specification Information for
compressed air supply requirements.
Pulse cleaning not energized
Use a voltmeter to check the solenoid valves in the
control panel. Check pneumatic lines for kinks or
obstructions.
Pulse valves leaking
compressed air
Lock out all electrical power to the collector and
bleed the compressed air supply. Check for debris,
valve wear, pneumatic tubing fault, or diaphragm
failure by removing the diaphragm cover on the
pulse valves. Check for solenoid leaks or damage.
If pulse valves or solenoid valves and tubing are
damaged, replace.
No display on the Delta P
Controller
No power to the controller
Use a voltmeter to check for supply voltage.
Fuse blown
Check the fuse in the control panel. See wiring
diagram inside the control panel. Replace if
necessary.
Display on Delta P
Controller does not read
zero when at rest
Out of calibration
Recalibrate as described in Delta P Maintenance
Manual.
Delta P Controller ON,
but cleaning system does
not start
Pressure tubing disconnected,
ruptured, or plugged
Check tubing for kinks, breaks, contamination, or
loose connections.
High Pressure On or Low
Pressure Off setpoint not
adjusted for system conditions
Adjust setpoints to current conditions.
Delta P Controller arrow
keys do not work
Improper operation
Press and hold one of the three setpoint keys to use
arrow keys.
Pulse cleaning never
stops
Pressure switch not operating
correctly
Check pressure switch inside the control panel.
High Pressure On or Low
Pressure Off setpoint not
adjusted for system conditions
Adjust setpoints to current conditions.
Pressure tubing disconnected,
ruptured, plugged, or kinked
Check tubing for kinks, breaks, contamination, or
loose connections.
Alarm light is ON
Alarm setpoint too low
Adjust to a higher value.
Excess pressure drop
Check cleaning system and compressed air supply.
Replace filter packs if filter packs do not clean down.
Pressure tubing disconnected,
ruptured, plugged, or kinked
Check tubing for kinks, breaks, contamination, or
loose connections.
Troubleshooting
