. MAINTENANCE SERVICE PROCEDURE CHECK AIR CONDITIONER CHECK LEVEL OF REFRIGERANT (GAS) WARNING If the refrigerant used in the air conditioner 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. 4 - 33 1. Start 2. Pres powe 3. Pres 4. Pres the lo 5. Open 6. Pres switc 7. Use chec in the the engine and set th e engine speed to approx. 15 00 rpm. s main power switch (1) of the air conditioner to turn the r ON. s fan switch (2) and set the air flow to "Hi".
s temperature control switch (3) to set the temperature to he s fan switch (2) and s temperature contro set the air flow to " l switch (3) to set t west setting. the door and windo sight glass (6) (inspe ction window) of r eceiver dri er (5) to k the condition of the refrigerant gas (fr eon 134a ) flowing refrigerant circuit. ity of refrigerant tion of sight glass er switch is turned ON, few bubbles A: Quant B: Condi a: Prope r: After air condition bubbles are se pale m en and refrigerant be comes milk-white and then b ecomes ilk-white. b: Insuffi cient refrigerant: Afte r air conditioner sw itch is tur ned ON, bubble s are seen continuo usly. X:
Condi tion of refrigerant flo w d liquid of refrigerant are mixed. Y: Condi tion of sight glass x: There are bubbles: Gas an d liquid of refriger ant are mi y: There are not bubbles: All refrigerant is liquefied and arent. transp z: Refrig erant is milk-white: O il and refrigerant a re separa ted from each o ther and their mixtur e is pale milk-whit e.