Graco Inc ti5766a, 309639, 309250 Pressure Control Assembly Replacement, Removal, Installation

Pressure Control Assembly Replacement

Pressure Control Assembly Replacement

See Wiring Diagram, page 28.

WARNING

Read Electric Shock Warning, page 3 and Pressure Relief Procedure, page 8.

Removal

1.Relieve pressure, page 8. Disconnect power cord from outlet.

2.Remove two screws (30) and shroud (29).

3.Disconnect pressure switch connector (A) from con- trol board (33).

4.Remove tape (22) holding wires to manifold.

5.Pull wires back through hole (K) in housing.



	A
2221	K
TIC

30

29

ti5766a

If you plan to reuse the pressure control assembly, be very careful not to damage or tangle the wires while unscrewing the assembly.

8. Remove pressure control assembly.

Installation

Inspect pressure control assembly before installa- tion to verify the o-ring is installed and in place.

1.Align grommet collar (17) on fluid manifold so open- ing faces toward motor.

2.Apply loctite to pressure control assembly threads (16)

3.Screw pressure control assembly (16) into manifold and torque to 150 in-lbs (17.0 N.m)

Be careful when tightening pressure control knob that wires do not get pinched between the pressure control assembly and fluid manifold.

6.Turn the pressure control knob (16) counter clock- wise as far as you can to access the flats on either side of the pressure control assembly.

7.Using a 1 in. (26 mm) wrench loosen and unscrew pressure control assembly.

4.Wrap wires around knob and feed through slot in grommet (21).

5.Insert grommet (21) in hole (K) in housing. Secure wires to manifold housing with tape (22).

6.Reconnect pressure switch connector (A) to control board (33).

7. Install shroud (29) and two screws (30).

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