Komatsu PC400LC-5 Operation & Maintenance Manual page 131

14. COLD WEATHER OPERATION
14.1.3 BATTERY
AL
WARNING
l
To
avoid gas explosions, do not bring fire or sparks near the
l Battery electrolyte is dangerous. If it gets in your eyes or on
your skin, wash it off with large amounts of water, and
consult a doctor.
When the ambient temperature drops, the capacity of the battery
will also drop. If the battery charge ratio is low, the battery electro-
lyte may freeze. Maintain the battery charge as close as possible to
lOO%, and insulate it against cold temperature so that the machine
can be started easily the next morning.
REMARK
Measure the specific gravity and calculate the rate of charge
from the following conversion table.
20°C 0°C -10°C -20°C
100% 1.28 1.29 1.30 1.31
90% 1.26 1.27 1.28 1.29
80%
1.24 1.25 1.26 1.27
75%
1.23 1.24 1.25 1.26
14.1.4 PREPARING THE CAB HEATER
If the ambient temperature drops, use the cab heater.
When using the cab heater, turn valve @ on the water manifold
counterclockwise to open it.
l
When leaving the cab heater unused for a long time, turn valve
@ clockwise to close it.
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