Maintenance. Graco 313227A PRO Xs Auto Waterborne Electrostatic Air Spray Gun


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Maintenance. Graco 313227A PRO Xs Auto Waterborne Electrostatic Air Spray Gun | Manualzz

Maintenance

Maintenance

Clean the Gun Daily

Turn off the turbine air before flushing the gun or any part of the system.

1.

Flush the gun.

• Do not immerse the gun in fluid.

2.

Relieve pressure, page 15.

3.

Clean the outside of the gun as follows:

• Clean all parts with a non-conductive, compatible solvent. Conductive solvents can cause the gun to malfunction.

• Do not use methylene chloride as a flushing or cleaning solvent with this gun as it will damage nylon components.

• Fluid in the air passages could cause the gun to malfunction and could draw current and reduce the electrostatic effect. Fluid in the power supply cavity can reduce the alternator life. Whenever possible, point the gun down when cleaning it. Do not use any cleaning method which could allow fluid into the gun air passages.

• Do not point the gun up while cleaning it.

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• Do not wipe the gun with a cloth that is heavily saturated; wring out the excess fluid.

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4.

Clean charging probe with soft brush and compatible solvent.

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19

Maintenance

5.

Clean the air cap and fluid nozzle daily, minimum.

Some applications require more frequent cleaning.

Replace the fluid nozzle and air cap if they are dam-

aged. See Clean the Air Cap and Fluid Nozzle, page 20.

6.

Check the electrode and replace if broken or dam-

aged. See Prepare gun for repair, page 28. on page 31.

7.

Check for fluid leakage from the gun and fluid

hoses. See Check for Fluid Leakage on page 21.

Tighten fittings or replace equipment as needed.

8.

Clean fluid and air filters.

4.

Wipe the fluid nozzle (4), shroud (48), and exterior of the gun clean with a cloth dampened in solvent.

Avoid getting any solvent into the air passages.

Whenever possible, point the gun down when cleaning it.

5.

If it appears that there is paint inside the fluid nozzle

(4) air passages, remove the gun from the line for servicing.

6.

Clean the air cap (3) with the soft bristle brush and solvent or submerge the air cap in suitable solvent and wipe it clean.

9.

Flush the gun before changing colors and whenever you are done operating the gun.

NOTICE

Do not use metal tools to clean the air cap or fluid nozzle holes as this could scratch them. Make sure the electrode is not damaged.

Scratches in the air cap or nozzle or a damaged electrode can distort the spray pattern.

Clean the Air Cap and Fluid

Nozzle

Equipment Needed

• soft bristle brush

• compatible solvent

Procedure

7.

Slide the shroud (48) onto the gun.

8.

Carefully install the air cap (3). Be sure to insert the electrode (7) through the center hole of the air cap.

Rotate the air cap to the desired position.

9.

Make sure the u-cup (1a) is in place on the retaining ring (1). The lips must face forward. Tighten the retaining ring until the air cap is held firmly in place; you should not be able to rotate the air cap horns by hand.

10. Install the charging probe (2), see page 9.

11. Test gun resistance, page 22.

To reduce the risk of an injury, follow the Pressure

Relief Procedure on page 15 when you stop spray-

ing and whenever you are instructed to relieve the pressure.

1.

Relieve the pressure, page 15.

2.

Remove the charging probe (2), see page 9.

3.

Remove the air cap assembly (1, 3) and shroud

(48). See F IG . 14.

20 313227A

Maintenance

48

3

1

1a 7 4

F IG . 14. Clean Air Cap and Fluid Nozzle

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Check for Fluid Leakage

To reduce the risk of an injury, follow the Pressure

Relief Procedure on page 15 when you stop spray-

ing and whenever you are instructed to relieve the pressure.

During operation, periodically check the manifold exhaust tube (YY) and both ends of the gun shroud (ZZ)

for the presence of fluid. See F IG . 15. Fluid in these

areas indicates leakage into the shroud, which could be caused by leaks at the fluid tube connections or fluid packing leakage.

If fluid is seen in these areas, stop spraying immediately. Relieve the pressure, then remove the gun for repair.

If any fluid leakage from the gun is detected, stop spraying immediately. Fluid leakage into the gun shroud could cause fire or explosion and result in serious injury and property damage.

YY

ZZ

F IG . 15. Check for Fluid Leakage

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ZZ

YY

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