12
Disassembly and Repair
Nordson Corporation 1994
All Rights Reserved
108 129
Issued 3/94
Manual No. 31
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13
Cleaning and Repair
1.
Clean all powder path parts with compressed air and a clean cloth.
DO NOT use a knife or any other sharp object to scrape off impact
fusion (powder fused to inside surfaces). Powder will quickly build
up in any surface scratches.
NOTE:
If necessary, use a cloth dampened with isopropyl or ethyl
alcohol to clean parts. Remove O-rings before cleaning. Use alcohol
sparingly, as a last resort. DO NOT immerse guns in alcohol. DO NOT
use other solvents.
2.
Inspect all O-rings and replace if damaged.
3.
Inspect all gun parts. Replace worn parts as necessary.
Reverse the disassembly procedure to re-assemble the powder path
components.
The high voltage cable and gun resistor can be replaced with a new
cable service kit, or the gun resistor can be replaced separately.
WARNING
: Before performing the following procedures, shut
OFF all electrical power at a disconnect switch or breaker
ahead of the power supply or master control module. Ground
the electrode before removing the gun from the mounting bar.
Replacing Cable Assembly
1.
Remove the gun from the mounting bar. Remove the nozzle
assembly from the powder path and unscrew the cable from the
gun extension.
2.
Disconnect the cable from the electrostatic power supply. Discard
the cable assembly.
3.
Remove the new cable assembly from box, carefully uncoil it, and
route from power supply to gun.
4.
Install the resistor end of the cable assembly in the gun, being
careful not to bend the electrode, and thread the cable assembly
into the gun extension. Re-install the nozzle assembly.
5.
Connect the cable to the power supply multiplier, as described in
your power supply manual. The cable end must be clean and dry,
and the multiplier well filled with dielectric oil.
Replacing Cable And Resistor
