Repair
Repair
Shutdown proportioner and allow chemicals to cool before servicing gun.
Clean A and R components in separate con- tainers to avoid cross contamination.
Service Screen Screw
1.Flush gun according to Clean Spray Gun Procedure, page 20.
2.Unthread screen screw from gun block.
3.Remove check valve from screen screw. Clean valve with gun cleaner and inspect for damage. Replace if necessary.
4.Remove screen from screen screw. Soak in gun cleaner or replace if clogged or dirty.
5.Clean screen screw cavity. If any particles are visible, clean with clean out drills and flush with gun cleaner.
CAUTION
Any material left in cavity on downstream side of screen will clog mixing module.
6.Inspect screen screw seal for damage. Replace if necessary.
7.Reinstall screen screw in gun block. Make sure it is tight.
8.Flush gun with mixing module removed.
Remove Centerline
Components
Refer to FIG. 4 through FIG. 6 for diagrams of centerline components for all gun models.
1.Flush gun according to Clean Spray Gun Procedure, page 20.
2.Connect air supply to gun. Set safety stop to OPEN.
3.Remove air cap.
4.Trigger gun and hold it to relieve pressure on PCD retainer.
5.Remove PCD retainer by turning it counter- clockwise.
6.Remove PCD from mixing module retainer.
To remove PCD that is stuck, set safety
stop to OPEN, depress and release gun trigger to unseat it. Set safety stop to
CLOSED (SERVICE).
7.Remove mixing module retainer.
8.Set safety stop to OPEN. Depress and release gun trigger to unseat it. Remove mixing module off end of valving rod. Set safety stop to CLOSED (SERVICE).
CAUTION
Do not use sharp objects or metal tools to remove mixing module.
9.Loosen rear packing nut
10.Push safety stop partially forward, rotate it counterclockwise, and slide off air cylinder.
22 | 311321H |
