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OPERATION
Messages displayed with hydraulic oil too cold:
Fault
Help:
Information
The Shovel is equipped with a "½ Qmax control circuit for cold
oil" which limits the main pumps oil delivery to approximately
50% of the total capacity as long as the oil temperature has not
reached the minimum operating temperature shown in column "2"
of the Viscosity and Temperature Chart on page 244.
The pumps will move to maximum delivery position and the mes-
sage will disappear, as soon as the minimum operating tempera-
ture of the hydraulic oil is obtained.
Information
During the warm-up period, complete several operating cycles of
all hydraulic movements without load. Avoid operation against
limit stops. (high pressure build up).
Work can be started when the minimum operating temperature
shown in column "2" of the viscosity chart is obtained.
Hydraulic oil far below operating temp.
Wait for warm-up phase!
The machine was taken into operation although the
start viscosity was not attained.
- Preheat hydraulic oil!
# Hydraulic oil not at operating temp.!
Operate with reduced power!
(Main pump delivery 50% of total capacity)
# Hydraulic oil below operating temperature!
Pre-heat hydraulic oil or warm up at low
idle speed and reduced power.
3.10 STARTING THE ENGINES
243
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