Check Gun Electrical Grounding - Graco WB3000 Instructions - Parts Manual

Check Gun Electrical Grounding

Megohmmeter Part No. 241079 (AA-see Fig.
14) is not approved for use in a hazardous area.
To reduce the risk of sparking, do not use the
megohmmeter to check electrical grounding
unless:
• The gun has been removed from the hazardous
area;
• Or all spraying devices in the hazardous area
are turned off, ventilation fans in the hazardous
area are operating, and there are no flammable
vapors in the area (such as open solvent
containers or fumes from spraying).
Failure to follow this warning could cause fire,
explosion, and electric shock and result in serious
injury and property damage.
Graco Part No. 241079 Megohmmeter is available
as an accessory to check that the gun is properly
grounded.
1. Have a qualified electrician check the electrical
grounding continuity of the spray gun and air
hose.
2. Turn OFF (O) the ES On-Off switch.
3A2497C
3. Turn off the air and fluid supply to the gun. Follow
the Pressure Relief Procedure, page
4. Disconnect the fluid hose.
5. Make sure the grounded air hose is connected
and the hose ground wire is connected to a true
earth ground.
6. Measure the resistance between the gun handle
(BB) and a true earth ground (CC). Use an
applied voltage of 500 minimum to 1000 volts
maximum. The resistance should not exceed
100 ohms. See Fig. 14.
Figure 14 Check Gun Electrical Grounding
Gun Setup
26.
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