PREACUTIONS 18. Keep suction discharge hose assembly and liquid line capped until right before assembly of joint. • Ensure that protective sleeves are in proper location where specified • Lubricate all pre-installed O-rings with specified refrigerant mineral oil (Reference assembly instructions) • prior to assembly of joints. Pre-lubricated, preinstalled O-rings do not require lubrication prior to installation unless the oil has absorbed into the O-ring and the surface is dry. Seat O-ring in its female cavity prior to hand starting and torqueing joint nuts. • Seat male end form with O-ring in its female cavity prior to torqueing the mini block-fitting joint. • Use two wrenches for making each refrigerant joint connection - a calibrated torque wrench on the nut and • a backup wrench on the mating nut or a block fitting wrench on the block. Clip or secure hoses and lines as specified. • Be sure caps are tight on access valves. To insure tightness, screw caps down until cap seal contacts valve • housing and then give it ¼ to ½ turn more. Assemble dual O-ring fitting joints as follows: • a. Oil bore with a specified oiling tool using ZEROL ESTER 68 HYBRID. b. Do not oil O-rings. c. Align end forms and then push together completely. d. Tighten joint to specified torque using a backup wrench. Rotate stock on a first-in first-out basis. • Finger start all mounting bolts that thread into compressor or brackets. Also finger start the bolt securing • the block fitting on the suction discharge hose assembly to the compressor. DO: Lubricate all pre-installed O-rings with specified refrigerant specified oil (ZEROL ESTER 68 HYBRID) • prior to assembly of joints. Pre-lubricated, preinstalled O-rings do not require lubrication prior to installation unless the oil has absorbed into the O-ring and the surface is dry. DO: Use specified mineral oil to lubricate O-rings (Reference assembly instructions ) • DO: Use correct refrigerant O-rings in the vehicle refrigerant system. (Refer to assembly instructions for • part numbers). Oil used in e-Compressor is ZEROL ESTER 68 HYBRID, as it differs from the oil used in mechanical driven • compressors. ZEROL ESTER 68 HYBRID oil is very sensitive to moisture in the A/C system. Moisture can create sludge, • and may cause the refrigerant system failure / reduce the electrical insulation Technician should prevent moisture ingression into the A/C system (Do not leave the HVAC components • without caps) To protect the refrigerant system from moisture, a proper amount of desiccant is also required • The oil used in conventional belt driven compressors is “Polyalkylene glycol” (PAG) lubricant which has • very low volume resistivity (high conductive characteristic). It is strictly prohibited to mix ZEROL ESTER 68 HYBRID oil with PAG oil Mixing of small amount of PAG oil can reduce the volume resistivity drastically. This includes any PAG oil • contained in leak detection dyes, and the PAG oil that remains in the A/C service equipment hoses after use. Make connections with bends, kinks, or obstructions in lines. Use bolt or nut to “walk” manifold block or mini block into it’s mating part. Proper technique is with O-ring inseat, push blocks together trapping seal washer before running up and tightening the fastener. Allow hoses and lines to rub against adjacent parts. Bend metal lines to ease assembly. Do not use lines as a handle to lift the compressor or condenser. Use lines contaminated with water. FATC 38
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