MAINTENANCE PROCEDURE MAINTENANCE CHECK AND ADJUST AIR CONDITIONER 4 Check Level of Refrigerant (gas) If the refrigerant used in the cooler gets into your eyes or on your hands, it may cause loss of sight or frostbite. Do not touch the refrigerant. Never loosen any part of the refrigerant circuit. Do not bring any 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 idling, and check the flow of the refrigerant gas (freon 134a) in the refrigerant 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 flow (bubbles pass continuously): Lack of refrigerant (C) Colorless, transparent: No refrigerant REMARK When there are bubbles, the refrigerant gas level is low, so contact your refrigerant dealer to have refrigerant added. If the air conditioner is run with the refrigerant gas level low, it will cause damage to the compressor. Inspection During Off Season 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 compressor.
Inspection and Maintenance Items 4-38 WARNING Check, maintenance items Content of check, maintenance Guidelin e for maintenance interv Refrigerant (gas) Charge amount Twice a year (spring, autumn) Condenser Clogged fins Every 50 0 hours Compressor Operating condition Every 40 00 hours V-belt Damage, tension Every 25 0 hours Blower motor, fan Operating condition When re (does it when required make abnormal noise?) quired Control mechanism Operating condition (does it function normally?) When re quired Piping mounts Mounting condition, looseness at tightening or connecting When re portions, leakage of gas, damage quired