Graco 310554V User Manual

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)

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 F

. 21 and F

. 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.

1.

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

2.

Refer to F

. 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.

Remove the light bulb as follows:

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.

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.

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

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.

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.