Replacing The Solenoid Valve; Replacing The Solenoid Valve Block Assembly - National Optronics Horizon II Instruction Manual

7. Align the set screws on the locking collar with the flats on the motor shaft and
position the collar on the shaft so that only the chamfered end of the shaft (about
1/16") protrudes past the collar.
8. Tighten the set screws securing the collar to the shaft.
9. Reconnect the Diode Pack to the Brake's 2 conductor amp-type connector.

REPLACING THE SOLENOID VALVE:

1. Switch the power to the "OFF" position.
2. Disconnect the air supply from the right side of the Edger.
3. Unplug the Solenoid to be replaced by squeezing the connector at the end of the
solenoid and gently pulling the connector out.
4. Remove the two screws securing the solenoid to the valve block and lift the solenoid
valve and gasket off of the block.
5. Clean the top of the block, being careful not to let debris fall into the block.
6. Position the new solenoid valve and gasket on the block and secure with the two
screws.
7. Carefully insert the wiring connector into the receptacle at the end of the solenoid.
8. Reconnect the air supply to the right side of the Edger and check for air leaks.

REPLACING THE SOLENOID VALVE BLOCK ASSEMBLY:

1. Switch the power to the "OFF" position.
2. Disconnect the air supply from the right side of the Edger.
3. Unplug the Solenoid Valve Block Assembly from the wiring harness at its 6 conductor
amp-type connector.
4. Note the position of the airlines and disconnect them from the valve block.
5. Remove the two socket head screws securing the valve block to the base of the
machine and lift the assembly out of the machine.
6. Position the new assembly on the base plate and secure with the two socket head
NATIONAL
INCORPORATED
PARTS REPLACEMENT
Tel: 434-295-9126 Tech Support: 800-247-9796 Fax: 888-239-0778
100 Avon Street, P.O. Box 1547
Charlottesville, VA 22902
Revision: 11/98 Page - 51 -