Disassembly and Repair
13
Nordson Corporation 1994
All Rights Reserved
108 129
Issued 3/94
Manual No. 31
−
13
Replacing Resistor Assembly
1.
Remove the gun from the mounting bar. Remove the nozzle
assembly from the powder path and unscrew the cable from gun
extension.
2.
Place one wrench on the spring cover flats and another on the
cable adapter flats. Unscrew the cable adapter from the spring
cover.
NOTE:
Thread-locking compound is used on adapter threads during
assembly. If adapter is difficult to remove, use a soft-jawed vise to hold
spring cover.
3.
Place the coupling flats in a soft-jawed vise, with the contact tip up,
and unscrew the cable well. Discard old resistor kit parts.
4.
Clean old dielectric grease off cable end. End must be clean and
dry.
WARNING
: The following steps must be followed to prevent
resistor failure. All air inside the cable well, resistor holder,
and contact must be replaced by dielectric grease when kit is
installed. Air pockets will cause internal arcing and carbon
tracking, leading to failure of the cable or resistor.
5.
Remove the plastic shipping caps from the ends of the new
resistor kit. Unscrew the well adapter (and resistor holder and
resistor) from the cable well.
Figure 5. Replacing Resistor Assembly
Electrode
Resistor
Well
Adapter
Coupling
Spring
Cover
Cable
Adapter
Cable
Well
Resistor
Holder
Contact
