Troubleshooting
7-27
Part 1123087_02
3/2014 Nordson Corporation
Corrective ActionPossible CauseProblem
2. System underfilled
(contd)
No or low air pressure Check the air supply to the adhesive
bin.
Air pressure regulator failed Replace the regulator.
Clogged cyclone exhaust filter Clean or replace the cyclone exhaust
filter. Refer to Replacing the Cyclone
Exhaust Filter in Section 6,
Maintenance.
Overfill Delay too short Adjust the Overfill Delay setting. Refer
to Entering Fill Settings in Section 4,
Setup.
Foreign material or incorrect
adhesive in bin
Inspect the adhesive in the bin for
contamination.
Adhesive bridging in bin Dislodge the adhesive.
Vibrator failed Replace the vibrator.
Adhesive transfer hose blocked Clear the blockage from the hose.
Reroute the hose if a hose blockage
problem persists.
Adhesive bin pump blocked Disconnect the adhesive transfer
hose from the adhesive bin and and
clear the blockage from the pump.
Refer to Clearing Adhesive Bin
Blockage in this section.
Adhesive bin solenoid valve failed Clean or replace the solenoid valve.
Fill board failed Replace the fill board.
Level sensor out of calibration Calibrate the level sensor at
application temperature with the
melter empty. Refer to Calibrating the
Level Sensor in this section.
3. Cyclone exhaust tube
and filter housing
filled with adhesive
System overfilled Refer to the System Overfilled
problem in this table. Refer also to
Cleaning the Cyclone Exhaust Tube
later in this section.
Air pressure too high Reduce the air pressure to the
adhesive bin such that it is just high
enough for reliable operation.
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