Prodigy
r
Manual Powder Spray Gun
10
Part 1053680E05
E
2007 Nordson Corporation
Troubleshooting
WARNING: Allow only qualified
personnel to perform the following tasks.
Follow the safety instructions in this
document and all other related
documentation.
These procedures cover only the most common
problems that you may encounter. If you cannot
solve the problem with the information given here,
contact your local Nordson representative for help.
Problem
Possible Cause
Corrective Action
1.
Unsteady or
inadequate powder
flow
Problem with powder pump
Refer to pump manual for
troubleshooting.
Blockage in powder tubing
Perform a hard purge to clear tubing.
Replace tubing if partially or
completely blocked.
Plugged nozzle
Remove nozzle and clean.
2.
Uneven pattern
Insufficient pattern air flow
Increase pattern air flow.
Worn powder tube
Remove powder tube from gun and
check for worn passageway.
3.
Loss of wrap, poor
transfer efficiency
Low electrostatic voltage
Increase the electrostatic voltage (kV
or
µ
A setting).
Poorly grounded parts
Check the conveyor chain, rollers,
and part hangers for powder buildup.
The resistance between the parts
and ground must be 1 megohm or
less. For best results, 500 ohms or
less is recommended.
Poor connection in high voltage
path inside spray gun
Perform the Multiplier and Resistor
Assembly Resistance Tests on
page 11.
Fault in controller
Refer to Troubleshooting in the gun
controller manual.
4.
No kV output from the
spray gun (LED on
the spray gun does
not light)
Damaged control cable
Perform the control cable continuity
tests on page 12.
If an open or short is found, replace
the cable.
Fault in controller
Refer to Troubleshooting in the gun
controller manual.
5.
No kV output from the
spray gun (LED on
the spray gun lights)
Faulty voltage multiplier or poor
connection in high voltage path
inside spray gun
Perform the resistance tests on
page 11.
Check all high voltage path
connections.
6.
No kV output and no
powder output
Faulty trigger switch or control
cable
Perform the control cable continuity
tests on page 12, and the trigger
switch test on page 13.
Faulty controller wiring harness
Check the wiring between the GUN
receptacle and the circuit board.
Faulty controller circuit board
Check the circuit board as described
in the controller manual.
