Troubleshooting
5-5
Part 1602221-01
E 2012 Nordson Corporation
Spray Gun Power Supply Resistance Test
Use a megohm meter to check the resistance of the power supply, from the
J2−3 feedback terminal at the connector to the contact pin inside the front
end. The resistance should be between 280−320 megohms. If the reading is
infinite, switch the meter probes. If the resistance falls outside this range,
replace the power supply.
J2−3 (YELLOW)
FEEDBACK
J2−2 (BLACK)
COMMON
J2−1 (RED)
OSC
280−320 Megohms at 500 VDC
Figure 5-8 Power Supply Resistance Test
Electrode Support Resistance Test
Use a megohm meter to measure the resistance of the electrode support
assembly from the contact ring on the back to the electrode in the front. The
resistance should be 19−21 megohms. If the resistance is out of this range
repair or replace the electrode support assembly .
Refer to Electrode Support Repair in the Repair section to repair the
electrode support assembly.
19−21 Megohms
Figure 5-9 Electrode Support Resistance Test
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