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OPERATION
Emergency Indication of Operating Conditions.
The ECS system is equipped with an emergency indication. In
case the text display (A) fails to work, it indicates faults in impor-
tant operating systems of the Shovel. The indication is effected by
means of LED's at the Programmable Logic Controller "PLC"
installed in the cab base. Refer to page 208 for the location of the
"PLC".
The following faults are indicated:
The ECS system is by-passed (By-pass switch S27 actuated)
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.
NOTICE
The LED "H31" monitors all six high pressure filters. Refer to
page 217 for description of the diagnostic codes flashed out by LED
"H31".
Coolant pressure
Coolant temperature
Engine oil pressure
Start of both engines blocked, resp. engine shut down,
due to closed main shut-off (gate) valve hydraulic tank
Faulty monitor channel for hydraulic oil temperature
Too low hydraulic oil level! Stop the engines
Faulty monitor channel engine speed
Emergency shut down switch actuated
Engine shutdown from ground man (if so equipped)
3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS
Fault:
LED No.:
H30
H31
H33
H34
H36
H37
H38
H39
H112
H116
H135
111
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