Check
Check
Check the
the
the Grounding
Grounding
Grounding of
of
of the
the
the Spray
Spray
Spray
Gun
Gun
Gun and
and
and Isolation
Isolation
Isolation System
System
System
Megohmmeter Part No. 241079 is not approved
for use in a hazardous location. To reduce the risk
of sparking, do not use the megohmmeter to check
electrical grounding unless:
• The gun has been removed from the hazardous
location;
• Or all spraying devices in the hazardous
location are turned off, ventilation fans in the
hazardous location are operating, and there are
no flammable vapors in the location (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.
Graco Part No. 241079 Megohmmeter (AB) 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.
2.
Turn off the electrostatics.
3.
Turn off the air and fluid supply to the gun. Follow
the
Pressure Relief Procedure, page 30
. The
fluid hose must be empty.
4.
Purge the fluid hose with air, if needed.
5.
Follow the spray gun manual to check proper
grounding of the spray gun.
6.
Use an ohmmeter (or megohmmeter in the ohm
range) to measure the resistance between the
cabinet ground lug (214) and a true earth ground
(CC). The resistance must be less than 100
ohms.
Figure 22 Check the Grounding of the Cabinet
Flush
Flush
Flush the
the
the Equipment
Equipment
Equipment Before
Before
Before First
First
First Use
Use
Use
The equipment was tested in fluid at the factory. To
avoid contaminating your fluid, flush the equipment
with flushing fluid before you use the equipment. See
Flush the System (Systems without Color Change),
page 31
or
Flush the System (Color Change Enabled
.
28
3A8493A
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