Graco Inc 237409, 308455K, 237413 Flushing, When to flush, II. How to flush

Flushing

I.When to flush.

DBefore the first time use

DWhen changing colors

DBefore fluid can dry or settle out in a dormant system (observe the recommended fluid pot life on catalyzed fluids)

DBefore storing the system

7.Open the pressure pot air shutoff valve (17b).

8.Set the pressure pot air regulator to 20 psi (138 kPa, 1.4 bar).

9.Open the gun fluid shutoff valve (18).

10.Hold the gun against and aimed into a grounded metal waste pail. Trigger the gun slowly. When fluid flows freely, release the gun trigger.

II.How to flush.

See Fig. 9.

1.Relieve pressure.

2.Remove the air cap before flushing. Clean it separately.

3.Remove the pressure pot cover. Remove the tank liner, if used. Pour in 1 gal. (4 liter) or place a

1 gal. (4 liter) metal pail of compatible solvent in the pressure pot. Install the cover and tighten the c-clamp handles (27) securely.

4.Make sure the pressure pot and gun air regulators (33, 36) and the master air valve (A) is closed.

5.Be sure the air relief valve (7) is closed (clockwise).

6.Open the master air valve (A).

11.For a first–time flush: trigger the gun and flush with solvent for 30 seconds.

For flushing after spraying fluid: trigger the gun and flush with solvent until the system is thor- oughly cleaned. Repeat with clean solvent if necessary.

12.Release the gun trigger, close the pressure pot air shutoff valve (17b).

13.Relieve pressure.

14.Open the tank and clean the inside of the tank and its suction tube.

15.You are now ready to prime the system with another fluid or to store the system. Relieve pres- sure if you are storing the system.

KEY

ABleed-Type master air valve

4 Pressure relief valve

7 Air relief valve

17a Gun air shutoff valve

17b Pressure pot air shutoff valve

18 Gun fluid shutoff valve

27 C-clamps

33 Pressure pot air regulator

36 Gun air regulator

A

17b

18

33

17a

27

7 36

4

TI0750B

Fig. 9 Model 237413 shown

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