25
Donaldson Company, Inc.
Problem
Probable Cause
Remedy
Insufficient airflow
continued
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.
Solid-State timer failure
Using a voltmeter, check supply voltage to the timer
board. Check and replace the fuse on the timer
board if necessary. If the fuse is good and input
power is present but output voltage to the solenoid
is not, replace the timer board. See Solid-State Timer
Installation.
Solid-State timer out of
adjustment
See Solid-State Timer and Solid-State Timer Wiring
Diagram.
Damper control in extraction
arm is closed
Check that the damper control(s) are open. The
damper handle should be located in line with the
rigid tubing and is the wide open position.
Debris is blocking airflow in the
extraction arm
Remove the flexible tubing on joint(s) and inspect
the tubing passages for debris. Remove debris and
reinstall flexible tubing for extraction arm. See
Extraction Arm Installation and Operation Manual.
Extraction arm rigid ducting
and/or flexible joint tubing is
damaged
Check and replace any tubing that is collapsed or
damaged.
Extraction arm will not
remain in desired set
position or is difficult to
move
Friction joints too loose or too
tight
See the Extraction Arm Installation and Operation
manual.
Extraction arm light does
not light
Light bulb has burned out or
loose wire connections
See Extraction Arm Installation and Operation
manual.
Extraction arm is difficult
to rotate from side to
side or binding, causing
joint failure
Swivel collar mount lacks
lubrication or is binding because
of particulate in moving parts
See Extraction Arm Installation and Operation
manual.
Troubleshooting
