Troubleshooting
6-6
Part 1611362
−
01
E
2018 Nordson Corporation
Corrective Action
Possible Cause
Problem
17. Reclaim or Fresh
powder transfer pump
turned off but
continues to run
Solenoid valve in manual override
Check the solenoid valve assembly.
Make sure the manual operator on
the valve is not in override position.
Solenoid valve failed open
Replace the valve.
18. Fresh powder transfer
pump is turned on but
pump not running
Level sensor on feed hopper is
detecting powder in hopper
The pump will not turn on until the
powder level falls below the level
sensor and the delay timer runs out.
Refer to Problem 15. for other
causes
19. Fresh powder transfer
pump does not stop
automatically
No powder supply at bulk feed
system
Check the fresh 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.
20. Reclaim and/or Fresh
powder transfer pump
purge cycle does not
start
Reclaim and Fresh powder
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.
21. Hopper level sensors
giving false positive
readings
Level sensors may not be installed
far enough into the hopper body.
Sensor should protrude through the
hopper wall 1
−
2 threads. Screw in
sensor further to correct.
Continued...
Содержание Spectrum VT Feed Center
Страница 4: ...Change Record ii Part 1611362 01 E 2018 Nordson Corporation...
Страница 8: ...Table of Contents vi Part 1611362 01 E 2018 Nordson Corporation...
Страница 12: ...Safety 1 4 Part 1611362 01 E 2018 Nordson Corporation...
Страница 24: ...Description 2 12 Part 1611362 01 E 2018 Nordson Corporation...
Страница 52: ...Operation 4 24 Part 1611362 01 E 2018 Nordson Corporation...
Страница 64: ...Troubleshooting 6 10 Part 1611362 01 E 2018 Nordson Corporation...
Страница 86: ...Repair 7 22 Part 1611362 01 E 2018 Nordson Corporation...
Страница 90: ...Parts 8 4 Part 1611362 01 E 2018 Nordson Corporation Hopper 10014043 4 5 7 8 6 1 2 3 Figure 8 2 Controller...
Страница 100: ...Diagrams 9 2 Part 1611362 01 E 2018 Nordson Corporation...
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