29
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.
Dust storage area overfilled or
plugged
Clean out dust storage area. See Dust Disposal.
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.
With collector discharging
outside, differential pressure is
present from indoor to outdoor
Recalibrate with the pressure tubing attached as
described in the 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.
Not wired to the timing board
correctly
Connect the pressure switch on the timer board to
Terminals 7 and 8 on TB3.
Faulty relay
Using a multimeter, test relay for proper closure.
Replace if necessary.
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.
Troubleshooting
