Troubleshooting
6‐5
Part 7192568-03
E
2020 Nordson Corporation
Corrective Action
Possible Cause
Problem
18. Fresh powder 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.
19. Reclaim and/or Fresh
powder transfer pump
purge cycle does not
start
Reclaim and Virgin transfer pumps
not turned on
Pumps must be on before purge can
start. Turn on pump to be purged.
Screen or wiring defective
No signal from screen to controller.
Turning the switch to Pump Purge
position should turn on signal. Check
wiring, repair or replace as needed.
Purge solenoid valves or wiring
defective
Check wiring from feed center control
panel to solenoid valve assembly on
top of feed center. Check solenoid
valve operation. Check air supply to
solenoid valve assembly. Repair or
replace as needed.
Purge air pilot valve or pilot air
tubing defective
Check pilot air tubing. Make sure air
signal is reaching pilot valve. Check
pilot valve operation. Check air supply
to pilot valve. Repair or replace as
needed.
20. Feed center low
powder level alarm on
Alarm delay timer has run out, level
sensor not detecting powder
Alarm 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 is
turned on. The timer default is
3minutes.
Problem with powder supply or
Virgin transfer pump
Refer to Problems related to powder,
sieve, or pump.
