Repair
311320K
17
Repair
NOTE:
Clean Center Line Components using Gun
Service Kit prior to performing any repair procedures.
Remove and Service Filter
Screen
1. Perform
(page 13) and
, page 16.
2. Unthread screen mounting screw. Remove screen
mounting screw and filter screen assembly from gun
block.
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 damaged.
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 Injection Slots
2. Remove check valves.
3. Inspect check valves to ensure sleeve is secured,
and place check valves in separate containers of
gun cleaner.
4. Flush cleanout ports with gun cleaner.
5. Turn valving rod adjustment screw one full turn
counterclockwise to ensure valving rod will be
withdrawn completely past injection slot.
6. Clean mixing chamber injection slots. With air
supply connected to gun, depress and hold trigger
to keep valving rod in open position. Insert
appropriate cleanout spade into cleanout hole and
mixing chamber.
Shut down proportioner and allow chemicals to cool
before performing any repair procedures.
F
IG
. 17 Filter Screen Assembly
NOTICE
Any remaining material in cavity on down stream side
of screen will clog mixing chamber.
Screen Screw
Seal
Screen
Snap Ring
Mounting Screw
F
IG
. 18 Check Valves
A-Iso Check Valve
(tall hexhead)
Clean-out Port
(both sides)
R-Resin Check Valve
(short hexhead)
