Graco Inc 237409, 308455K, 237413 II. How to adjust the air regulators, III. Safety relief valve

System Component Information

II.How to adjust the air regulators.

See Fig. 4.

1.Always open air regulators slowly to prevent surging during startup.

2.As you look at the system, the regulator (36) on the right controls air to the gun and the regulator (33) on the left controls air to the pressure pot.

3.Model 237409 has two T-handle air regulators (33 and 36). Model 237413 (shown in Fig. 4) has one T-handle air regulator (36) and one air regulator with an adjustment knob (33).

T-Handle Air Regulator

33

4

36

Model 237413 shown

Turn the T-handle (36 and 33–Model 237409 only) in (clockwise) to open the air regulator and turn the T-handle fully out (counterclockwise) to close it. Be sure the jam nut under the T-handle does not interfere with your adjustments. Tighten the jam nut to lock in

Fig. 4

04066

the setting, if desired.

Air Regulator with Adjustment Knob

Model 237413 only

Pull out the adjustment knob (33), and turn the knob in (clockwise) to open the air regulator; turn the knob fully out (counterclockwise) to close it. Push the adjusting knob in to lock the setting if desired.

III.Safety relief valve

See Fig. 4.

The safety relief valve (4) automatically relieves the pressure pot pressure when the air pressure exceeds approximately 100 psi (0.7 MPa, 7.0 bar). It resets automatically when the pressure is relieved. Refer to the test procedure in manual 308369.

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