Komatsu PC300LC-8 Operation & Maintenance Manual page 128

OPERATION
Machine Push-up Switch
This switch (5) is used to switch the safety valve set pressure at the
head end of the boom cylinder to two levels.
(a) Low-pressure setting: The boom thrust force is weak, so the
(b) High-pressure setting: The thrusting force of the boom
Heated operator seat switch
(If equipped)
This switch (6) is used to switch on the heted seat.
(a) ON: seat heated
(b) OFF: seat not heated
Large Capacity Airflow Air Conditioner Blower Switch
(If equipped)
When this switch (7) is pressed, the additional blower motor is
actuated and the air flow from the air conditioner vents increases.
(a) ON: Large-capacity air conditioner blower is actuated
(b) OFF: Large-capacity air conditioner blower is stopped
swaying of the chassis is small during
digging operations,
operations can be carried out smoothly.
This is used for general digging
operations on normal ground, soft rock,
or blasted rock.
becomes more powerful, so it is easy to
escape from soft ground.
and digging
DETAILED CONTROLS AND GAUGES
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