OPERATION 3.7 ELECTRICAL EQUIPMENT IN CAB BASE Emergency Indication of Operating Conditions The ECS system is equipped with an emergency indication via LED’s on the Programmable Logic Controller ”PLC” (E6), illust. Z21753. In case of a malfunction of the text display in the operator’s cab, the LED’s in the fifth column (A13/A7) of the ”PLC” indicating fail- ures in vital operating systems of the Shovel. The following faults are indicated: 195 Fault: LED No.: The ECS system is by-passed (By-pass switch S27 actuated) H30 Start of engine 1 and/or engine 2 blocked, resp.
engine shifted to low idle speed by one or more of the six high pressure filters or by the chip indica- tors of the main pumps. NOTICE The LED ”H31” monitors all six high pressure filters and the six chip indicators. Refer to page 197 for description of the diagnostic codes flashed out by LED ”H31”. H31 Engine overspeed H32 Coolant pressure H33 Coolant temperature H34 Crankcase pressure H35 Engine oil pressure H36 Start of both engines blocked, resp. engine shut down, due to closed main shut-off (gate) valve hydraulic tank H37 Faulty monitor channel for hydraulic oil temperature H38 Too low hydraulic oil level!
Stop the engines H39 Faulty monitor channel engine speed H112 Emergency shut down switch actuated H116 Engine shutdown from ground man H135