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Operation
Use different sprayheads for different part shapes. Select the appropriate
nozzle for the parts being coated.
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Pinpoint nozzles for penetration
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Eight-orifice nozzles for flat surfaces
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Cylindrical nozzles for general purpose coating
Angle the nozzles to meet and follow the parts as they move through the
booth. Typical nozzle-to-part distance is 32,5 cm. Coat the
inside surfaces and recessed areas first, then coat the outside surfaces and
open areas.
Daily Maintenance
WARNING: Make sure the spray gun is grounded before spraying powder
or cleaning the spray gun with compressed air. Without a ground
connection the spray gun will become electrostatically charged. Personnel
touching the spray gun could receive a shock.
1. Remove the powder feed hose from the pump and the air tubing from
the pump and diffuser. Use air gun to clean the hose, diffuser, and charge
module with compressed air.
NOTE: Never blow powder through the feed hose back into the pump.
Turn on the booth exhaust fan, disconnect the hose from the pump, and
blow out the hose from the pump end into the booth.
2. Remove the diffuser from the gun body. Disassemble the diffuser and
clean the parts with compressed air and a clean, soft cloth. Check the
powder contact parts for wear and replace worn parts.
3. Blow out the charge module and sprayheads. Disassemble and clean
the charge module. Check the powder contact parts for wear and
replace worn parts.
NOTE: Never use a knife or other sharp object to clean plastic parts.
Powder will build up on scratches on the powder contact surfaces. The
powder particles can fuse on impact and clog the spray gun.
WARNING: All electrically conductive equipment in the spray area must be
grounded. Ungrounded or poorly grounded equipment can store an
electrostatic charge which can give personnel a severe shock or arc and
cause a fire or explosion.
4. Make sure all conductive equipment in the spray area, including the
spray guns, are connected to a true earth ground. The resistance from
part to ground, through the hangers and conveyor, must not exceed one
megohm. For best results, the resistance should be less than 500 &.
4-1
Troubleshooting
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