OPERATION 3.7 ELECTRICAL EQUIPMENT IN CAB BASE 3.7.1 SWITCH BOARD (X2) IN CAB BASE Legend for illustration Z 22467 (S27) Emergency By-pass switch for the shutdown func- tion of the PLC (E6). If an automatic shutdown is ini- tiated by Shovel systems, with a dangerous situation for man or machine, which needs the Shovel to be operable to over-come the dangerous situation, actuate this switch to override the shutdown function of the system and to enable a restart of the Diesel engine. NOTICE This switch can not override engine initiated shutdowns. As soon as the immediate situation of danger is over, shutdown the unit.
Correct the fault that caused the shut down and re-set the Emergency By-pass switch (S27). (S41.1) Switch for constant speed adjustment of engine 1 to 1800/min (rated speed) for testing purposes (S41.2) Switch for constant speed adjustment of engine 2 to 1800/min (rated speed) for testing purposes (S57.1) Diagnostic switch for flashing out fault codes via lamp (H97.1) of the Centry system for engine 1. (S57.2) Diagnostic switch for flashing out fault codes via lamp (H97.2) of the Centry system for engine 2. (H97.1) Fault lamp for flashing out diagnostic fault codes of the Centry system for engine 1. (H97.2) Fault lamp for flashing out diagnostic fault codes of the Centry system for engine 2.
Diagnostic Fault Codes of the Engine Centry System The fault lamps (H97.1 and H97.2) will light for about 2 seconds after main key switch-on and then go out when no faults are being detected. When a fault condition exist, the fault lamp will turn "ON" for warning faults, and "ON FLASHING" for more severe faults that can affect engine operation and need immediate atten- tion. To determine an active fault, shut off the engine and turn main key switch to "ON" position (engine not running). Press diagnostic switch (S57.1 or S57.2) for 1 to 2 seconds and then release. If the corresponding fault lamp illuminates while the diag- nostic switch is held depressed, there is an active fault or faults.
Active faults MUST be corrected as soon as possible. For more information, refer to the separate Operation and Mainte- nance Manual CENTRY, filed in part 3 of this binder. 191 CAUTION