Installation

Check Electrical Grounding

WARNING

Fire, Explosion, and Electric Shock Hazard

Megohmmeter Part No. 241079 (AA-see

FIG. 8.) is not approved for use in a hazard- ous area. To reduce the risk of sparking, do not use the megohmmeter to check electri- cal 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.

1.Have a qualified electrician check the electrical grounding continuity of the spray gun and turbine air hose.

2.Make sure the turbine air hose (B) is connected and the hose ground wire is connected to a true earth ground.

3.Turn off the air and fluid supply to the gun.

4.Measure the resistance between the turbine air inlet fitting (TA) and a true earth ground (N).

a.If using a black or grey turbine air hose, use a megohmmeter to measure the resistance. Use an applied voltage of 500 minimum to 1000 volts maximum. The resistance should not exceed 1 megohm.

b.If using a red turbine air hose, use an ohmmeter to measure the resistance. The resistance should not exceed 100 ohms.

3.If the resistance is greater than the maximum read- ing specified above for your hose, check the tight- ness of the ground connections and be sure the turbine air hose ground wire is connected to a true earth ground. If the resistance is still too high, replace the turbine air hose.

N

AA

TA

B

TI1735A

Fig. 8. Check Gun Grounding

16

309298J

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Graco Inc 309298J, 244592, TI1713A, PRO Auto Xs AA Check Electrical Grounding, Check Gun Grounding

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