Graco 310554V Control Assembly Service, Servicing the Control Assembly, Light Bulb Removal

Control Assembly Service

Control Assembly Service

Servicing the Control Assembly

This part of the manual provides information about the following control assembly components:

•Indicator Lamp Button and Select Switch (page 26)

•Light Bulb (page 26)

•MAIN Power Switch (page 27)

•Potentiometer (page 28)

Refer to the Parts information on pages 34, 36, and 38 while servicing the control assembly.

Lamp Button and Switch Removal

ELECTROCUTION HAZARD

Installing and servicing this equipment requires access to parts which could cause an electric shock or other serious injury. Have only qualified electricians access the control assembly.

1.Shut off system power at the main circuit breaker.

2.At the control assembly, move the MAIN power switch to the OFF position.

3.Unlock and open the hinged cover of the control assembly enclosure.

4.Disconnect the lead wires from the fixture terminals. Refer to FIG. 21 and FIG. 22 for lead wire identifica- tion. If necessary, label the wires to facilitate reas- sembly after the fixture is replaced.

5.Loosen two screws which clamp the fixture to the cover. Rotate the fixture counter–clockwise relative to the lens cover or switch operator. Separate the two parts of the fixture and remove them from the cover.

Lamp Button and Switch Replacement

1.Reverse the disassembly procedures 3-5 in the pre- vious section.

2.Refer to FIG. 21 and FIG. 22 for lead wire identifica- tion.

3.Apply system power at the main circuit breaker.

4.Move the MAIN power switch to the ON position, applying power to the control assembly.

5.Verify that the replaced fixture operates correctly.

6.Return the orbital dispenser and control assembly to normal operating condition.

Light Bulb Removal

Remove the light bulb as follows:

ELECTROCUTION HAZARD

Installing and servicing this equipment requires access to parts which could cause an electric shock or other serious injury. Have only qualified electricians access the control assembly.

1.Shut off system power at the main circuit breaker.

2.At the control assembly, move the MAIN power switch to the OFF position.

3.Unscrew and remove the indicator light lens.

4.Gently press and rotate the bulb counter-clockwise, 1/4 in. of a turn, unlocking the bulb from its socket. Remove the bulb from the socket.

Light Bulb Replacement

Replace the light bulb as follows:

1.Insert the light bulb in the socket.

2.Gently press and rotate the bulb clockwise, 1/4 in. of a turn to lock the bulb in its socket.

3.Replace the lens.

4.Apply system power at the main circuit breaker.

5.Move the MAIN power switch to the ON position, applying power to the control assembly.

6.Verify that the light bulb operates correctly.

26 310554V