Owner`s manual

OM-263 001 Page 40
SECTION 8 − TROUBLESHOOTING
8-1. Troubleshooting Table
Trouble Remedy
No display on controller. Check fuse FU1 in control panel. Replace fuse if open.
Have Factory Authorized Service Agent check for proper supply voltage to controller.
Optional Remote Control does not
work.
Place Remote Control switch on extractor in Remote position.
Check fuse Fu2 in control panel. Replace fuse if open.
Controller does not read zero when at
rest.
Recalibrate controller (see Section 6-7).
Controller display reads OR or −−−−. Verify high and low pressure tubing is attached and not leaking. Use a differential pressure measure-
ment device to verify actual pressure does not exceed 10 in. wg.
Controller is on but cleaning system
does not start.
Have Factory Authorized Service Agent check for damaged or blocked pressure tubing.
Have Factory Authorized Service Agent connect the timer board pressure switch to TB3 terminals 7
and 8.
Have Factory Authorized Service Agent check controller relay on circuit board.
Pulse cleaning does not stop. Check filters, and replace if necessary.
Have Factory Authorized Service Agent remove jumper wire from timer board.
Have Factory Authorized Service Agent connect timer board pressure switch to TB3 terminals 7 (nor-
mally open) and 8 (common).
Have Factory Authorized Service Agent check pressure switch inside control panel.
Have Factory Authorized Service Agent adjust high pressure on and low pressure off setpoints to
current conditions.
Have Factory Authorized Service Agent check for damaged or blocked pressure tubing.
Alarm light is on. Check filters, and replace if necessary.
Change alarm setpoint to a higher value.
Have Factory Authorized Service Agent check for excessive pressure drop. Check cleaning system
and compressed air supply. Replace filter packs if they do not clean.
Have Factory Authorized Service Agent check for damaged or blocked pressure tubing.
Controller arrow buttons do not work. Prior to using the Arrow buttons, press Menu button and choose a parameter, then press Set button.
Have Factory Authorized Service Agent remove the program disable jumper from TB2 terminals 3
and 4.
Cleaning light is on but cleaning sys-
tem is not functioning.
Have Factory Authorized Service Agent check wiring between the controller and the timer board, and
between the timer board and the solenoid valve coils.
Have Factory Authorized Service Agent check solenoid coils for proper operation.
Have Factory Authorized Service Agent check pressure switch terminals 7 and 8 on TB3.
Have Factory Authorized Service Agent check if power On LED is lit on timer board.
If LED is not lit, have Factory Authorized Service Agent check supply voltage to the timer board and
check timer board fuse. Replace fuse if necessary.
If LED is lit, have Factory Authorized Service Agent perform the following test: Observe the output
display. Install a temporary jumper across the pressure switch terminals. Output LEDs should flash in
a sequence. Check output using an multimeter set to 150 VAC range. Measure from Solenoid Com-
mon to solenoid output. The multimeter will indicate if voltage is present for that output when the LED
flashes. Replace the board if LEDs do not flash, or if no voltage is present at output terminals during
the flash sequence.