METHOD FOR CHECKING AND MAINTENANCE AIR CONDITIONER
(Machine with cab specification)
CHECK AND MAINTENANCE ITEMS
Some
check and maintenance items of the air conditioner are to be performed periodically and the others are to
be performed when required. Perform the check and maintenance according to the following list, and use the air
conditioner effectively.
Check and maintenance
items
Content of check, maintenance Guideline for maintenance interval
Refrigerant (gas) Charge amount Twice a year (spring, autumn)
Air conditioner condens-
er
Clogged fins Every 500 hours
“METHOD
FOR CHECKING AND CLEAN-
ING RADIATOR FINS, OIL COOLER FINS,
FUEL COOLER FINS, AND AIR CONDI-
TIONER CONDENSER FINS”
Air conditioner compres-
sor
Operating condition Every 4000 hours
V-belt Damage, tension Every 250 hours
“METHOD
FOR CHECKING AND ADJUST-
ING AIR CONDITIONER COMPRESSOR
BELT TENSION”
Blower motor, fan Operating condition (Check for un-
usual noise)
When required
Control mechanism Operating condition (Check that
function is normal)
When required
Piping mounts Mounting condition, looseness at
tightening
or connecting portions,
leakage of gas, damage
When required
Even during the off-season, operate the air conditioner for 3 to 5 minutes once a month to maintain the oil film at
all parts of the air conditioner compressor.
MAINTENANCE PROCEDURE MAINTENANCE
4-52
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