Nordson Encore XL Powder, Manual

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© 2021 Nordson Corporation
1607027-01
7-7 Troubleshooting
Problem Possible Cause Corrective Action
18. Color change
cycle started, gun
positioner stopped
at forward limit
switch
Oscillator not at bottom
of stroke (USA only)
Oscillator must be at bottom of stroke for spray guns to be in
position for gun blowoff. Blowoff will not start until bottom of
stroke sensor is on and remains on.
Check oscillator position.
ColorMax not selected
on Encore Engage gun
positioner configuration
screen (USA only)
Check gun positioner configuration.
Oscillator not stopped
Oscillator gets stop command from gun positioner controller.
Refer to your system electrical drawings.
Contact Nordson technical support.
USA only − Oscillator bottom of stroke sensor not sending signal
to main system panel. Sensor detects rotating lever arm. Make
sure sensor is positioned to detect arm and check wiring and
connections to sensor.
Reciprocator not at Park
position
Reciprocator must be at Park position for spray guns to be in
position for gun blowoff. Blowoff will not start until Park position is
achieved.
Check reciprocator position. Make sure Park position is
configured within stroke range through Encore Engage controller.
19. Color change cycle
started, blowoff air
does not turn on
No air supply to solenoid
valve or process valve,
failed valve, or bad
electrical connection
Solenoid valve in the main system panel is activated by a signal
from the gun positioner control panel. Solenoid valve sends air
signal to large pilot valve that provides air to the blowoff nozzles.
Make sure main system panel air supply is on.
Check solenoid valve output. If solenoid coil is energized but no
air flows from valve, replace valve.
Check air tubing to pilot valve.
Check process valve operation.
Check the wiring and connections between the gun positioner
controller and solenoid valve.