Graco 312787G Replace a Solenoid, Replace the Color Change Board Fuse

Replace a Solenoid

1.Remove air supply pressure from the system. Remove the color change module cover (30).

2.Disconnect the 2 solenoid wires from the color change board (15). See FIG. 7, the Color Change Module Electrical Schematic on page 15, and the System Electrical Schematic on page 17.

3.Unscrew 2 screws (P) and remove the solenoid (4). See FIG. 6.

4.Install the new solenoid (4).

5.Connect the 2 solenoid wires to the color change board (15). Solenoid wires are polarized (red +12Vdc, black –). Refer to the Color Change Mod- ule Electrical Schematic on page 15 and the Sys- tem Electrical Schematic on page 17.

6.Reinstall the cover (30).

Troubleshooting

Replace the Color Change Board Fuse

NOTE: Replacing the fuse with a non-Graco fuse voids the IS system safety approval.

Fuse	Part No.	Description
F1	123690	Fuse; 125 mA, intrinsically safe

1.Remove electrical power from the system. Remove the color change module cover (30).

2.Locate fuse (F1) on the color change board. See FIG. 7. Remove the screw and metal strap.

3.Pull the fuse away from the board.

4.Install new fuse (F1). Reinstall the strap over the fuse.

5.Reinstall the cover (30). Restore electrical power to the system.

Solenoid	Color	Solenoid
Identification		Identification
Label		Label
Color	Catalyst
		TI12826a

P Manual Solenoid Overrides

FIG. 6: Color Change Solenoids

312787G 11