4.8 Service procedure When required Maintenance Check air conditioner Check level of refrigerant (gas) If the refrigerant of the conditioner system gets into your eyes or on your hands, it may cause loss of sight or frost- bite. Do not touch the refrigerant. Never loosen any part of the refrigerant circuit. Do not bring any flame close to any point where the refrig- erant gas is leaking. 1 Remove cap (1) of the engine hood. The sight glass of the receiver can be seen through the cap hole. GK015018 If there is a lack of refrigerant (gas), the cooling performance will be poor.
When operating the cooler at high speed with the engine at full throttle, use the receiver sight glass (inspection window) to check the condition of the refrigerant gas (Freon R134a) flowing in the refrigerant circuit. Sight glass Suitable Lack of refrigerant z No bubbles in refrigerant flow: Suitable No refigerant (colorless, transparent) z Some bubbles in flow (bubbles pass continuously): Lack of refrigerant Receiver z Colorless, transparent: No refrigerant GK032261 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. Operating the air conditioner off season Even during the off-season, operate the air conditioner for 3 - 5 minutes once a month to maintain the oil film at all parts of the compressor. 4-36 WA150-5H – VEAM934100 WARNING WARNING