OPERATION 3.9 STARTING THE ENGINES Emergency By-pass Switch for the ECS- Shut-down Func- tion. The unit is equipped with an Emergency By-pass Switch for the ECS-system. This switch is located on the ”X2” switch board in the cab base compartment and marked with . If an automatic shut-down of the Shovel happens, with a danger- ous situation for man or machine, which needs the Shovel to be operable to overcome the dangerous situation, actuate this switch to override the shut-down function of the system and to enable a restart of the engines. As soon as the immediate situation of danger is over, shut down the unit.
Correct the fault that caused the shut down and re-set the Emergency By-pass switch. REMARK When a battery voltage fault has occurred, the operational data (oil vicosities, timer settings etc.) stored in the Programma- ble Logic Controller (PLC) can be lost and must be re-entered after the correct battery voltage has been re-established. Engine warm-up After starting let the engines run for a warm-up period before increasing the engine speed. This is necessary to avoid piston and bearing seizure. Refer to the engine operation and maintenance manual for the most favourable coolant temperature. Hydraulic oil warm-up G On machines without hydraulic oil pre-heating system:
DO NOT start the engines if the ambient temperature (oil tem- perature) is below the starting temperature shown in column "1" of the hydraulic oil viscosity chart on page page 220 in this section. G On machines with hydraulic oil pre-heating system: Before starting the engine, warm-up the hydraulic oil to the starting temperature shown in column "1" of the hydraulic oil viscosity chart. 217 CAUTION