Check
Check
Check Gun
Gun
Gun Electrical
Electrical
Electrical Grounding
Grounding
Grounding
Megohmmeter Part No. 241079 is not approved
for use in a hazardous area. (In Figure 14, item
AA.) 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.
3.
Turn off the air and fluid supply to the gun. Follow
the
Pressure Relief Procedure, page 33
. The
fluid hose must not have any fluid in it.
4.
Disconnect the fluid hose.
5.
Make sure the red-colored grounded air hose
(HG) 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). The
resistance should not exceed 100 ohms.
Figure 14 Check Gun Electrical Grounding
7.
If the resistance is greater than 100 ohms, check
the tightness of the ground connections and be
sure the air hose ground wire is connected to a
true earth ground. If the resistance is still too
high, replace the air hose.
Flush
Flush
Flush Before
Before
Before Using
Using
Using Equipment
Equipment
Equipment
The equipment was tested in fluid at the factory. To
avoid contaminating your fluid, flush the equipment
with a compatible solvent before using the equipment.
Follow the steps in
32
3A7504A
