Nordson Encore Select HD, Customer Product Manual

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© 2022 Nordson Corporation
1620445-03
6-4 Troubleshooting
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 225-335 megohms. If the reading is infinite, switch the meter probes.
If the resistance falls outside this range, replace the power supply.
NOTE: There are multiple variables that can affect the Meg-Ohm readings of your meter
(temperature and measurement voltage). If the Meg-Ohm meter output voltage differs
from the 500 Vdc setting, it will have a direct impact on the measurement accuracy.
Measurements should also be taken at room temperature 22 °C or 72 °F. Allow time for
the multiplier to cool to room temperature for repeatable results.
225-335 Megohms at 500 Vdc
J2-1 (RED)
OSC
J2-3 (YELLOW)
FEEDBACK
J2-2 (BLACK)
COMMON
(RED)
(BLACK)
Figure 6-1 Power Supply Resistance Test