Komatsu PW160-7K Series, Operation And Maintenance Manual

Page: 168 / 358

OPERATIONS AND CHECKS BEFORE STARTING ENGINE OPERATION
168
IN COLD AREAS (AUTOMATIC WARMING-UP
OPERATION)
When starting the engine in cold areas, carry out the automatic
warming-up operation after starting the engine.
When the engine is started, if the engine water temperature is low
(below 30°), the warming-up operation is carried out automati-
cally.
The automatic warming-up operation is cancelled if the engine
water temperature reaches the specified temperature (30°C) or if
the warming-up operation is continued for 10 minutes. If the
engine water temperature or hydraulic oil temperature are low
after the automatic warming-up operation, warm the engine up
further as follows.
NOTICE
●
When the hydraulic oil is at a low temperature do not
carry out operations or move the levers suddenly. Work
equipment control will be slower and less responsive
than normal therefore always carry out the warming up
operation first to ensure safe operation of the machine
and help extend the machine life.
●
Do not suddenly accelerate the engine before the warm-
ing-up operation is completed.
Do not run the engine at low idling or high idling continu-
ously for more than 20 minutes. This will cause leakage
of oil from the turbocharger oil supply piping. If it is nec-
essary to run the engine at idling, apply a load from time
to time or run the engine at a mid-range speed.
1. Set fuel control dial (7) at the low idling (MIN) position and run
the engine for about 5 minutes without load.
2. When the automatic warming-up operation is completed,
press working mode switch on the monitor panel until the
heavy-duty operation mode lamp lights up.
6
7
8
9
10
MIN.
7