Graco 311320H important safety instructions Clean Spray Gun Procedure

Maintenance

Clean Spray Gun Procedure

Thoroughly flush gun block with gun cleaner before removing valving rod or mixing compo- nents from gun block. Also allow chemicals in spray gun to cool before cleaning.

This procedure makes use of the 1-Quart or 3-Gallon Gun Service Kit.

1.Close both manual valves.

2.Remove gun from coupling block.

3.Attach service block of gun service kit to spray gun, and then tighten using 5/16 in. nut driver.

4.Pressurize container to 100 psi.

5.Open one manual valve on service block.

6.Trigger gun while holding against a grounded waste container until there is a fine, unobstructed mist of gun cleaner.

7.Release trigger of gun and 1-quart kit, and close manual valves on service block.

8.Repeat steps 5-7 for other side of gun.

9.After initial cleaning, remove air cap and flush a second time to ensure thorough cleaning.

10.Remove service block of gun service kit from spray gun.

11.Disconnect air supply.

12.Clean screens, check valves and screen screw. See Filter Screw Removal and Ser- vice procedure, page 19.

Inspect air cap, mixing chamber, and gun block for build up of material and clean as required.

Do not use metal cleaning devices to clean plastic components.

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