OPERATION 3.18 CENTRAL REFILLING SYSTEM 3.18.2 OPERATING THE HYDRAULIC SERVICE ARM A - Diesel Engines OFF The Service Arm can only be lowered. Proceed as follows: 1. Turn main key switch to ON position. 2. Turn enabling switch (1), illust. (Z 21764) to ON position ”1”. 3. For lowering the Service Arm (3) pull down chain (2). 4. Release chain (2) when arm (3) is in fully lowered position. REMARK To stop lowering movement of the Service Arm in any position release chain (2). 5. Before leaving the Shovel turn enabling switch (1) to OFF position ”0” and remove the main switch key.
When starting the Engines the Service Arm (3) will be lifted automatically to its home position, when the Enabling Switch (1) is in OFF position ”0”. B - Diesel Engines running Control the Service Arm as follows: 1. Turn enabling switch (1), illust. (Z 21764) to ON position ”1”. 2. To lower the service arm (3) pull chain (2) once and release. The service arm stops automatically when reaching its final position. For reversing moving direction of service arm pull chain (2) again. 3. To lift the service arm pull chain (2) once and release. The service arm (3) moves up to its home position.
NOTICE Be sure the Service Arm is completely lifted to its home posi- tion otherwise the proximity sensor in the guide frame of the service arm will not release the pilot control system. 259 CAUTION