All manufactured or remanufactured R134a compressors by Four Seasons® are charged with 3 ounces of the appropriate PAG oil and are assembled with ICE32.

FOUR SEASONS® CAPACITY GUIDE

Refer to the Four Seasons® Capacity Guide, the underhood decal, or the OEM service manual for verification.

• Result in Corrosive Damage1

• Impact System Performance• Void Compressor Warranty!

Consult Four Seasons® Capacity Guide or manufacturers specifications for accurate amount, type and viscosity.

Temperature Control Division

Copyright © 2016 All Rights Reserved Item # FS95919-17

THE IMPORTANCE OF COMPRESSOR LUBRICATION

Proper compressor lubrication is crucial to a successful repair and system longevity. Using the wrong type, viscosity and amount will

compromise compressor longevity and system integrity.

VISCOSITY

2

3

1

FOR SUCCESSFUL REPAIR, only the recommended amount, type, and viscosity of oil, and the appropriate refrigerant should be used. Use of oils containing dye, sealers or other additives that do not meet SAE J2670, may reduce compressor longevity, impact system performance and void your warranty.

TYPE

AMOUNT

Using refrigerant or lubricants containing sealants or excessive dyes may:

OEM approved for R134a systems 46, 100 and 150 viscositiesPAG (R134a)

MINERAL OIL

ESTER

HYBRID ELECTRIC

PAG (R1234yf)

OEM approved for R12

100 viscosity: ONLY used during retrofit (Original R12 system to R134a System)

Specially formulated for use in high voltage electric compressors

A PAG lubricant specifically designed for 1234yf systems. NOTE: R134a lubricants are not compatible with R1234yf systems. *ICE32 is not compatible with R1234yf systems.

Too Little2 – Seized compressor

Too Much3 – Slugged compressor (liquid/hydraulic lock), broken reed valves and/or broken pistons

ADD OIL TO THE CORRECT LOCATIONOrifice Tube: ½ in compressor; ½ in accumulatorTXV: ½ in compressor; ½ in evaporatorNOTE: If compressor has a drain plug, oil should be added to crankcase through drain plug. Otherwise add to suction port.

PAG lubricants are available in 46, 100, 150 viscosities. Due to compressor design and precise manufacturing tolerances, it is imperative the correct viscosity is used. Use of incorrect viscosity oil can result in premature compressor failure, excessive noise, abnormal wear, etc.

PERFORMING A SUCCESSFUL COMPRESSOR REPLACEMENT

STARTS HERE.

Expert Technicians know performing a successful compressor replacement takes knowing the

importance of doing the job right, the first time.

Understanding the complexity of different A/C systems and how they function prevents compromising the

repair and voiding compressor warranty. Learn more inside.

Look for more DYK Inside!

SEARCH: Four Seasons Automotive

Technical Support 1-866-502-0068

www.4s.com/en/digital-resources/temp-testing/

ADDITIONAL RESOURCES:

DON'T COMPROMISE THE REPAIR. DO THE JOB RIGHT THE FIRST TIME.

A PROPER FLUSHING TECHNIQUE 1. Requires continuous air pressure 2. Meter 1/3 quart of flush into evaporator 3. Allow to soak for 10-15 minutes 4. Flush at 40 PSI 5. Air purge at 80 PSI for 30 minutes

• 69991 Dura II Quart• 69992 Dura II Gallon• 69994 Tech Select Quart

FOR A COMPLETE GUIDE TO ESSENTIAL STEPS TO REPAIR, SCAN HERE, OR VISIT WWW.4S.COM AND CHECK OUT OUR SUCCESSFUL SERVICE & REPAIR SECTION.

CATASTROPHIC COMPRESSOR FAILURE IS A SYMPTOM, NOT A CAUSE!

A compressor rarely fails on its own. To prevent a comeback, it is critical that the ROOT CAUSE of the original failure is identified and proper repair procedures followed. Doing the job right the first time eliminates comebacks and increases shop profitability and reputation!

CondenserMost modern condensers are constructed from hundreds of tiny tubes only a few fractions of an inch in diameter. They will be clogged with debris, therefore impossible to flush following a catastrophic compressor failure.

FOLLOWING CATASTROPHIC COMPRESSOR FAILURE, abrasive debris will be distributed throughout the system and become trapped in the dirty oil accumulated at the bottom of the evaporator – think valve grinding compound.

THIS IS WHY IT IS CRITICAL EVERY INCH OF THE REFRIGERANT PATH BE NEW OR FLUSHED. THIS IS REQUIRED TO MAINTAIN COMPRESSOR WARRANTY.

FOUR SEASONS® 59172 FLUSH GUN

Flush Tank

Universal Adapter (Hands Free Flush)

Pressure Regulator

Rubber Tip

18" Rubber hose

Shut off valve

A SUCCESSFUL FLUSH REQUIRES:

HIGH QUALITY FLUSH SOLVENT NOTE: MORE THAN ONE QUART OF FLUSH MAY BE REQUIRED TO FLUSH THE SYSTEM

• Evaporates Rapidly: Leaves No Residue• Chemically Stable: Safe on System Materials• Safe To Use

AN EFFECTIVE FLUSHING TOOL • Complete flow control • Enables hands-free connection • Maintains solvent momentum through component • Allows seamless transition to air-purge

Evaporator

Pressure Cycling Switch

On @45 psiOff @ 25psi

Typical Orifice Tube System

Hot Air1250

AIRFLOW950

Duct Air500

Cabin Air800

High Side

High Side

Low Side

Low

Sid

e 38ºF

38ºFDischarge Line

Suction Line

165ºF

135ºF

Liquid Line

Low Side Service Port

High Side Service PortMay also be located on discharge line. Note: Port location will effect pressure readings and how readings are interpreted

High Side Pressure Transducer

Condenser

!Must be checked for calibration and leaks.Failed transducer will impact condenser cooling fan operation.

!Must check compressor clutch voltageMinimum 12V w/ clutch engaged

Typical Thermal Expansion Valve System

Evaporator

Block TXV Integral Receiver Drier

Condenser

39ºF

36ºF 165ºF

135ºF

Hot Air1250

AIRFLOW950

Duct Air500

Cabin Air800

High Side

High Side

Low Side

Discharge LineLiquid Line

Suction Line

Block type or right angle type expansion valve

Receiver driers on older systems may be a separate component in the liquid line

High Side Pressure Transducer

Low Side Service Port

HVAC CONTROL UNIT

Evaporator Thermistor

!Must be checked for calibration and leaks.Failed transducer will impact condenser cooling fan and electro-viscous fan clutch operation.

!Must check compressor clutch voltage. Minimum 12V w/ clutch engaged

!Confirm thermistor accuracy

Hose AssemblyHose assemblies will be contaminated with debris from a failed compressor. Hoses with mufflers cannot be flushed and should be replaced. Carefully examine crimp joints and the interior barrier layer for evidence of deterioration.

Accumulator / Filter DrierAFD's manage the flow of liquid and vapor refrigerant through the system • Contains desiccant that helps absorb moisture from the system • Desiccant will disintegrate in direct contact with a flush solvent• Must be replaced for compressor warranty

Expansion devices meter refrigerant flow to the evaporator. Following a compressor failure:

Expansion Device

• Orifice Tube: Must be replaced for compressor warranty• Expansion Valve: Carefully Inspect. Replace if contaminated

"GRINDING COMPOUND"

BASIC REQUIREMENTS FOR COMPRESSOR WARRANTY

TXV - Older Type System

!Check calibration and for leaks

High Side Service PortMay also be located on liquid line. Note: Port location will effect pressure readings and how readings are interpreted

Muffler with filter inside

Orifice Tube

Accumulator