Check The Electrical Grounding - Graco 218-026 Instructions-Parts List Manual

Check the Electrical Grounding

WARNING
Proper electrical grounding of every part of your
system is essential. For your safety, read the
warning section,
HAZARD, on page 5. Ground the system as
explained there. Then check your system as
explained below.
1. Turn the ES On–Off valve to OFF. See Fig 2 for the
location of the valve lever.
2. Turn off the air and fluid supply to the gun.
3. Have a qualified electrician check the electrical
grounding continuity of the spray gun and air hose.
a. With the electrically conductive air hose (BB)
connected (see Connect the Air Line, page 7)
and properly grounded, use a megohmmeter
(AA) (shown in ACCESSORIES section) to
measure the resistance between the gun handle
(Y) and a true earth ground (Z). Use an applied
voltage of 500 minimum to 1000 volts maximum.
See Fig 1.
b. If the resistance is greater than 2 megohms,
check the tightness of the ground connections,
and be sure the air supply hose ground wire is
connected to a true earth ground. If the resis-
tance is still greater than 2 megohms, replace
the air supply hose.
INSTALLATION
(See Fig 1)
FIRE OR EXPLOSION
KEY
Y Gun Handle
Z True Earth Ground
AA Ohmmeter
BB Grounded Air Hose
Z
Y
Fig 1
KEY
Y ES Valve Lever
Z Fluid Adjusting Knob
AA Fan Adjusting Knob
BB ES Indicator Lights
BB
Fig 2
AA
BB
Y
Z
AA