Komatsu PC400LC-5 Operation & Maintenance Manual page 19

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6. GENERAL PRECAUTIONS
PRECAUTIONS FOR AlTACHMENTS
l When installing and using an optional attachment, read the instruction manual for the attachment
and the information related to .attachments in this manual.
l Do not use attachments that are not authorized by Komatsu or your Komatsu distributor. Use of
unauthorized attachments could create a safety problem and adversely affect the proper operation
and useful life of the machine.
l
Any injuries, accidents, product failures resulting from the use of unauthorized attachments will
not be the responsibility of Komatsu.
1
On machines equipped with an accumulator, for a short time after the engine is stopped, the work
equipment will lower under its own weight when the work equipment control lever is shifted to
LOWER. After the engine is stopped, set the safety lock lever to the lock position and also lock the
attachment pedal with the lock pin.
When releasing the pressure inside the work equipment circuit on machines equipped with an
accumulator, follow the procedure given in the inspection and maintenance section.
Method of releasing pressure -+ See "11.16 HANDLING ACCUMULATOR".
The accumulator is filled with high-pressure nitrogen gas, and it is extremely dangerous if it is
handled in the wrong way. Always observe the following precautions.
l
Never make any hole in the accumulator or expose it to flame or fire.
l Do not weld any boss to the accumulator.
l When carrying out disassembly or maintenance of the accumulator, or when disposing of the
accumulator, it is necessary to release the gas from the accumulator. A special air bleed valve is
necessary for this operation, so please contact your Komatsu distributor.
Gas in accumulator --) See "11.16 HANDLING ACCUMULATOR".
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