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Check the Electrical Grounding (See Fig. 8 )
WARNING
Proper electrical grounding of every part of your
system is essential. For your safety, read the warn-
ing section, Fire, Explosion, Or Electrostatic
Shock Hazard, on page 4. Ground the system as
explained there. Then check your system as
explained below.
WARNING
Megohmmeter P/N 218–979 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:
All spraying devices in the hazardous area are
turned off.
Ventilation fans in the hazardous area are oper-
ating.
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, electric shock and result in serious injury
and property damage.
1. Have a qualified electrician check the electrical
grounding continuity of the spray gun and air hose.
Make sure the electrically conductive air hose (G)
is connected and properly grounded and the air
and fluid supplies to the gun are completely turned
off.
2. Measure the resistance between the turbine air
inlet fitting (H) and a true earth ground (J).
Installation
a. If using a black or grey grounded air hose (G),
b. If you are using a red grounded air hose (G),
3. If the resistance is greater than the maximum
reading specified above for your hose, 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 resistance is still too high,
replace the air supply hose.
J
G
Fig. 8
use a megohmmeter (L) to measure the
resistance. Use an applied voltage of 500 mini-
mum to 1000 volts maximum. Resistance
should not exceed 2 megohms.
NOTE: See Accessories, page 47, to order
the megohmmeter, P/N 218–979.
use an ohmmeter to measure the resistance.
Resistance should not exceed 100 ohms.
L
H
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Troubleshooting
