Prodigy
r
Robot Gun
12
Part 1105518
−
02
E
2014
Nordson Corporation
Continuity and Resistance Tests
WARNING:
Allow only qualified
personnel to perform the following tasks.
Follow the safety instructions in this
document and all other related
documentation.
WARNING:
Turn off the electrostatic
voltage and ground the spray gun
electrode before performing the following
tasks. Failure to observe this warning
could result in a severe shock.
Resistance Tests
Use a 500 volt megohm meter to make these tests.
Multiplier/Resistor Test
−
All Versions
1. See Figure 11. Remove the retaining nut (1)
and nozzle (2).
2. Disconnect the control cable.
3. Short together receptacle pins 2, 3, and 4 and
connect them to the positive megohm meter
probe.
CAUTION:
You must short multiplier
receptacle pins 2, 3, and 4 together
before performing this test to avoid
damaging the multiplier.
4. Connect the negative megohm meter probe to
the adapter spring plunger.
The megohm meter reading should be 400
−
510
megohms.
If the reading is out of this range, test the
components of the high voltage path separately as
described in the following tests. Replace any
components that test out of range.
If the reading is infinite, there is no continuity
through the high voltage path. Check the high
voltage path connections (see Figure 2). If you
have a tube-mount gun, test the electrode cable for
continuity.
400
−
510 M
W
1
2
Pin 2
Pin 3
Pin 4
Figure 11 Multiplier/Resistor Test
Resistor Test
−
All Versions
Remove the resistor as described in
Resistor
Replacement
on page 16.
Resistor reading should be 153
−
187 megohms.
153
−
187 M
W
Figure 12 Resistor Test
