Nordson Sure Coat Series, Customer Product Manual

Page: 42 / 66

Troubleshooting
5-6
2001 Nordson Corporation
All rights reserved
334 627B
Issued 3/01
Manual 31-46
Use the following procedures to check the resistance and continuity of
the gun and its components. Perform each of these checks on a weekly
basis in the order that they are listed.
Gun Resistance
See Figure 5-2.
1. Disconnect the gun cable from the spray gun.
2. Connect the shorting plug connector (1) to the gun cable
connector (2).
3. Connect the megohm meter (4) probes to the shorting plug ring tong
terminal and gun electrode (3). If the reading is infinite, reverse the
probes.
4. Check the megohm meter reading. Resistance should be between
150 and 220 M
Ω
at 500 Volts.
5. If the reading is not between 150 and 220 M
Ω
, perform the Multiplier
Assembly Resistance and Electrode Assembly Resistance
procedures in this section.
3146006B
1
4
3
2
Fig. 5-2 Checking Resistance Across the Gun
1. Shorting plug connector
2. Cable connector
3. Electrode 4. Megohm meter
Note: Gun shown without hose support bracket for clarity.
Gun Resistance and
Continuity Checks