Check level of refrigerant (gas)
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WARNING
If the refrigerant used in the air conditioner gets into your eyes or is splashed on your hands, it may
cause loss of sight or frostbite. Never touch the refrigerant. Do not loosen any part of the refrigerant
circuit.
Do not bring any open flame close to any point where the refrigerant gas is leaking.
If the level of the refrigerant (gas) is low, the cooling effect will
be reduced. Run the engine at high idle, and check the flow of
the refrigerant gas (Hydrofluorocarbons HFC -134a) in the re-
frigerant circuit through the sight glass (2) (inspection window)
of the receiver (1) when the cooler is running at high speed.
(A) No bubbles in refrigerant flow: Suitable
(B) Some bubbles in refrigerant flow (bubbles pass continuous-
ly): Insufficient
(C) Colorless, transparent: No refrigerant
REMARK
When there are bubbles, the refrigerant gas level is low. Con-
tact your Komatsu distributor to have refrigerant added. If the
air conditioner is operated with the refrigerant gas level low, it
will cause damage to the compressor.
METHOD FOR REPLACING ADDITIONAL FILTER ELEMENT FOR BREAKER
(if equipped)
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WARNING
• Immediately after the engine is stopped, its parts and oil are still very hot, and may cause burn in-
jury. Wait for the temperature to go down, and then start the work.
For the element replacement interval, see “MAINTENANCE INTERVAL FOR HYDRAULIC BREAKER”.
Items to be prepared
Container to catch the oil
1.
Place a container to catch the drained oil under the filter element.
MAINTENANCE PROCEDURE
MAINTENANCE
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Summary of Contents for PC700LC-11
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Page 397: ...SPECIFICATIONS 5 1...
Page 401: ...For 7 6m Boom SPECIFICATIONS SPECIFICATIONS 5 5...
Page 402: ...SPECIFICATIONS SPECIFICATIONS 5 6...
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Page 427: ...REPLACEMENT PARTS 7 1...
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