imperialsystemsinc.com 21 Imperial Systems Inc.
PROBLEM PROBABLE CAUSE SOLUTION
Insucient airflow.
On Demand pressure cleaning does not start.
Pulse Cleaning never stops.
Alarm light is on
Cleaning output lights flash but system is not
functioning.
Display on Delta P dosent return to zero when
at rest.
Recalibrate DCP pressure module with
pressure tubing attached as described in timer
controller installation.
High setpoint not adjusted for system
conditions.
Check tubing for kinks, breaks, contamination,
or loose connections.
Pressure tubing disconnected or plugged. Remove jumper wire on solid state timer board
bypass terminal.
Bypass terminals on the timer board jumpered.
Remove jumper wire on solid state timer board
bypass terminal.
High or low setpoint not adjusted for system
conditions.
Adjust setpoint to current conditions.
Pressure tubing dissconected or plugged.
Alarm setpoint too low.
Check tubing for kinks, breaks, contamination,
or loose connections.
Adjust to a higher value.
Excess pressure drop.
Check cleaning system and compressed air
supply. Replace filter cartridges if filters do
not clean down
Pressure tubing dissconected or plugged. Check tubing for kinks, breaks, contamination,
or loose connections.
Improper wiring. Check wiring between the timer control board
and the solenoid valve coils.
Defective solenoids.
Check all solenoid coils for proper operation.
Timer board not powered. Check power light on timer board’s LED
display. If not illuminated, check the fuse on
the timer board. Replace as necessary.
If LED is illuminated, observe the output
display. Install a temporary jumper across the
man override terminal to the COM terminal.
Output LED’s should flash in sequence. Check
output using a multimeter measure from SOL
COM to a solenoid output. The needle will
deflect when the LED flashes for that output
if voltage is present at output terminals during
flash, replace board if necessary.
Timer board defective.
Low Alarm light flashing
Not set to zero during setup
Set Low Alarm setting to 0.0 INWC then hit
reset to enable it.
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