Troubleshooting
7-21
Part 1123087_02
3/2014 Nordson Corporation
Problem Possible Cause Corrective Action
5. Pump not stroking
(no adhesive output)
System not ready Wait for the system to indicate
Ready/OK.
System entered standby Switch off standby or wait until the
standby period has expired.
Manifold adhesive filter clogged Replace the manifold adhesive filter.
Refer to Replacing the Adhesive Filter
in Section 6, Maintenance.
Problem with applicator Check the applicator. Refer to the
applicator manual for applicator
troubleshooting.
Clogged nozzle(s) Clean or replace the nozzle(s).
Cold or clogged adhesive transfer
hose
Check the hose for heating problems
or clear the blockage from the hose.
No input air pressure to the pump Check the input air pressure. Adjust if
necessary.
Pump solenoid valve failed Check the solenoid valve.
Pump actuator malfunctioning for
one or more of the following
reasons:
Check for a malfunctioning actuator.
Air valve binding
Disassemble and clean the air valve.
Shifter fork slipped out of
position
Check the position of the fork and
reposition if necessary.
Shifter fork installed upside
down
Check the position of the fork and
reposition if necessary. The fork
should be positioned with the side
stamped UP facing the air motor.
Shifter fork bent or damaged
Replace the fork.
Magnet assembly dirty or
damaged
Clean or replace the magnet
assembly.
Bumper assembly dirty or
damaged
Replace the bumper assembly.
Shifter fork magnet loose
Replace the fork.
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