Komatsu PC5500-6 Operation & Maintenance Manual page 503

Hydraulic mining shovel
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MAINTENANCE
4.16.3 PROTECTIVE MEASURES BEFORE STARTING WELD REPAIRS ON
THE SUPERSTRUCTURE
Legend for illustration Z 21788
(1)
Battery main switch keys
(2)
Battery box cover underneath the cat walk
(3)
Battery current sensor (auxiliary resistor)
Cables for transmitting the battery charging current
(4)
to the DC converter (E7)
(J)
Location of battery current sensor
(auxiliary resistor) (3)
Observe sequence of steps:
1. Remove keys (1) of the two battery main switches.
2. Open the battery box cover (2) and secure in open position
with the safety chains provided.
3. Disconnect both cables (4) from auxiliary resistor (3).
Batteries give off highly inflammable gas! Never allow sparks
or open flame near the batteries! Avoid spilling any electro-
lyte on hands or clothing. repair or replace all broken wires
immediately. All terminals must be clean and securely fas-
tened; never paint connections.
DO NOT short across or ground any terminals of the batter-
ies.
WARNING
4.16 WELD REPAIRS
503

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