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311320G 19
Repair
Filter Screen Removal and
Service
1. Perform Pressure Relief Procedure (page
13) and Clean Spray Gun Procedure, page
18.
2. Unthread screen mounting screw. Remove
screen mounting screw and filter screen
assembly from gun block.
FIG. 17: Filter Screen Assembly
3. Remove screen screw retainer (snap ring
at end of screw) and screen. If screen is
dirty and clogged, replace it.
4. Clean and inspect screen cavity. If particles
are visible, remove with cleanout drills and
flush thoroughly with gun cleaner.
5. Inspect seal, and replace if worn or dam-
aged.
6. Reinstall filter screen assembly. With seal
in place, install screen and retainer clip-on
screen screw.
7. Install screen assembly to gun block.
Ensure screw is tight to prevent leakage.
8. Flush gun after cleaning cavity and screen.
See Clean Spray Gun Procedure, page 18.
Shut down proportioner and allow chemicals
to cool before performing any repair proce-
dures.
Clean Center Line Components using Gun
Service Kit prior to performing any repair pro-
cedures.
Screen Screw
Seal
Screen
Snap Ring
Mounting Screw
CAUTION
Any remaining material in cavity on down
stream side of screen will clog mixing cham-
ber.