Initial Set Up; Daily Start-Up; Daily Shutdown - Graco 311322L Operation, Parts, Service And Repair

Operation

Initial Set Up

1. Close both manual valves.
2. Engage safety stop.
3. Install female quick disconnect fitting on air
hose, which is bundled with fluid supply
hoses.
4. Connect A-isocyanate hose (red-taped) to
fitting on A-side block. Then connect
R-resin hose (blue-taped) to fitting on
R-side block.
A and R side hoses are sized differently to
prevent improper connection.
5. Pressurize A and R chemical hoses and
check for leaks. (See Proportioning Unit
manual.)
6. Check proportioning unit for proper hose
temperature, heater temperature, and pres-
sure. (See Proportioning Unit manual.)
7. Connect air supply hose to gun.
8. Open both manual valves, page 12.
9. Disengage safety stop.
10. Test spray on disposable surface.
11. Proceed with Daily Start-up procedure or
Shutdown procedure as required.
14

Daily Start-Up

Ensure side blocks are attached to gun, and
proportioning unit is at desired temperature
and pressure.
1. Connect air supply to gun, page 13.
2. Trigger gun multiple times to ensure proper
mixing chamber movement.
3. Open both manual valves, page 12.
4. Disengage safety stop.
5. Test spray on disposable surface.

Daily Shutdown

Follow this procedure when gun is out of
service for any length of time. Daily disas-
sembly of gun for cleaning is not recom-
mended if it has been operating properly.
However, if you remove gun from coupling
block, flush and clean thoroughly.
1. Follow Pressure Relief Procedure, page
15.
2. Shutdown proportioning unit as required.
3. Grease gun, page 15.
311322L