. MAINTENANCE SERVICE PROCEDURE CHECK AIR CONDITIONER CHECK LEVEL OF REFRIGERANT (GAS) WARNING Do not bring any flame close to any point where the refrigerant gas is leaking. 4 - 36 (Machine e quipped with cab) (If eq If the refrige rant used in the air conditi oner gets into your eyes or on your hands, it ma y cause loss of sight or fro stbite. Do not touch the r efrigerant. Never loose n any part of the refrigeran If there is a lack of refrigerant (gas), the cooling performan ce will be poor.
Whe engine at n operatin full throttle ditioner at high speed ceiver sight glass (in with the spection window) to check the of the refrigerant gas (R134a) uitable ck of refrigerant erant (R134a) flowing in t No bubb les in refrigerant flow: S Some b ubbles in flow (bubbles pass continuously): La Colorles s, transparent: No refrig REMARK e are bubbles, the refrigerant gas level is low, so contact your Komatsu distributors to have refrigeran When ther erant gas level is low, so contac tors to have refrigeran added. If th e air conditioner is run with the refrigerant ga s level low, it will cause damage to the compressor.
OPERATING THE AIR CONDITIONER OFF-SEASON Even durin g the off-season, operat e the air conditioner fo r 3 to 5 minutes once a month to m aintain the oil film at al parts of the compressor.