Troubleshooting
7-6
Part 1602966−05
E 2015 Nordson Corporation
Corrective ActionPossible CauseProblem
13. Virgin transfer pump
does not stop
automatically
No powder supply at bulk feed
system
Check the virgin powder supply.
Feed hopper level sensor not
adjusted properly
Level sensor stops pump when it
detects powder. Sensor indicating
light should be yellow when powder
is detected. Adjust the level sensor if
it is not detecting powder. Refer to
level sensor documentation.
Level sensor failed or wiring
defective
Check level sensor and wiring.
Repair or replace as needed.
14. Reclaim and/or virgin
transfer pump purge
cycle does not start
when Purge switch
turned to Pump Purge
position
Reclaim and virgin transfer pumps
not turned on
Pumps must be on before purge can
start. Turn on pump to be purged.
Switch or wiring defective No signal from switch to controller.
Turning the switch to Pump Purge
position should turn on signal. Check
switch and wiring, repair or replace
as needed.
Control manifold purge solenoid
valves or wiring defective
Check for air output from solenoid
valve SOL 340 (reclaim), SOL 342
(virgin). Refer to Section 2 for the
solenoid valve location. Check air
supply to control manifold. Check
cable wiring. Repair or replace as
needed.
Purge air process valve or pilot air
tubing defective
Check pilot air tubing. Make sure air
signal is reaching process valve in
pump station. Check process valve
operation. Check air supply to
process valve. Repair or replace as
needed. Refer to pump station
manual 1073134.
15. Feed center low
powder level alarm
buzzer on
Alarm buzzer delay timer has run
out, level sensor not detecting
powder
Alarm buzzer timer starts when the
transfer pump turns on. If the timer
runs out and the level sensor has still
not detected powder, then the alarm
buzzer is turned on. The timer
default is 3 minutes.
To turn off the buzzer, turn the Purge
switch to Gun Purge momentarily.
Problem with powder supply or
virgin transfer pump
Refer to problems related to powder,
sieve, or pump.
Continued...
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