Header Image - AircoFridge Optimizer

WHAT IS SO DIFFERENT ABOUT REFRIGERANT OILS?

by OilAdmin 0 Comments

ALTHOUGH THE COMPRESSION COMPONENTS OF CENTRIFUGAL COMPRESSORS REQUIRE NO EXTERNAL LUBRICATION, ROTATING SHAFT BEARINGS, SEALS AND COUPLING MUST BE CONSTANTLY AND ADEQUATELY LUBRICATED. JUST AS OTHER DRIVE SYSTEMS, HOWEVER, VERY FEW REGULAR OILS COULD MEET THE VISCOSITY AND DRYNESS REQUIREMENTS AS OUTLINED ABOVE.
FOR RECIPROCAL SYSTEMS, THE REFRIGERANT GAS CARRIES SOME OIL WITH IT INTO THE CONDENSER AND THE EVAPORATOR. THIS OIL MUST BE RETURNED TO THE COMPRESSOR WITHIN A REASONABLE TIME PERIOD AND HAVE ADEQUATE FLUIDITY AT LOW TEMPERATURES. THE OIL MUST ALSO REMAIN MISCIBLE AND BE FREE OF SUSPENDED MATTER THAT MIGHT CLOG THE SYSTEM. IN SMALL, POT TYPE, HERMETIC REFRIGERATION/AIR CONDITIONING SYSTEM, THE OIL IS NORMALLY NEVER CHANGED, SO IT MUST LAST FOR THE LIFE OF THE COMPRESSOR.

WHAT IS IMPORTANT TO KNOW AND WHY?

by OilAdmin 0 Comments

IN ALL HERMETIC SYSTEMS, THE CHEMICAL STABILITY REQUIRED OF THE REFRIGERANT OIL IN THE PRESENCE OF REFRIGERANTS, METAL, INSULATION MATERIALS AND EXTRANEOUS CONTAMINANTS, IS PERHAPS THE MOST IMPORTANT CHARACTERISTIC DISTINGUISHING REFRIGERANT OILS FROM THOSE USES IN OTHER APPLICATIONS. THEREFORE, ANY PRODUCT USED TO SUPPLEMENT THIS REFRIGERANT OIL MUST EXHIBIT ALL OF THE ABOVE CHARACTERISTICS OF THE REFRIGERANT OIL TO THE SAME OR GREATER DEGREE.

FREQUENTLY QUESTIONS & ANSWERS

by OilAdmin 0 Comments

WILL THE OIL SETTLE OUT?

No. AircoFridge Optimizer contains NO solids. The Components cannot settle out, or be filtered out. They are actually chemically bonded to the napthenic oil base molecules.

IS AFO COMPATIBLE WITH ALL REFRIGERATION OILS?

AFO is compatible and will readily mix with standard refrigeration oils because both AFO and standard refrigeration oils are napthenic based.  AFO is compatible and will mix readily with some synthetic oils. Contact your AFO representative to determine the compatibility of any synthetic oil applications you may have.

IS AFO COMPATIBLE WITH ALL REFRIGERANTS?

AFO oil is readily miscible in the following refrigerants:

GROUP 1

R-11 Trichlorofluoromethane

R-12 Dichlorodiflouromethane

R-13B1 Bromotriflouromethane

R-22 Chlorodifluoromethane

R-113 Trichlorortrifluoroethane

R-114 Dichlorotetrafluoroethane

R-134a HFC

R-502 Chlorodifluoroethane

Chloropentafluoroethane

R-744 Carbon Dioxide

GROUP 2

R-40 Methyl Chloride

R-764 Sulfur Dioxide

GROUP 3

R-290 Propane

Ammonia Systems

There is a tremendous effort in developing environmentally safe refrigerants. As the products come to market, AFO will perform tests to determine product compatibility, and will modify the formulation to meet new requirements as needed.

WILL THE PROTECTIVE FILM AFFECT BEARING TOLERANCES?

No. The contact activated barrier that bonds to all metal surfaces is extremely thin. The thickness of this film cannot be measured by the tools available to a machinist. The presence of this film will not affect bearing tolerances of their alignment.

DOES THE COMPONENT IMPROVE MECHANICAL SEAL LIFE?

Yes. Semi-hermetic units require mechanical shaft seals to retain the valuable refrigerant charge, and to keep out air and moisture. Mechanical seals utilize two ultra-precision machined and polished surfaces to generate a zero leakage shaft seal. The mechanical seal is, by far, the most precisely manufactured and most delicate component in the compressor. The seal’s highly polished surfaces can easily be damaged by dry starts, corrosion, or rough bearings.  Since these problems are avoided or at least minimize in units treated with FRIGI-TECH, the mechanical seal life is improved.

DOES THE COMPONENT AFFECT ELECTRIC MOTORS?

Motors in hermetically sealed units will enjoy similar benefits that compressors receive. 70% of all hermetically sealed motor failures are caused by bearing failures. Although it may appear on the surface that the motor failure is electrical in nature, in most cases it is a bearing failure that causes a motor stator misalignment which, in turn, causes motor winding damage. Since motor bearings receive the same protection as compressor bearings, motor life is extended when AFO is used.

WHAT TEMPERATURE RANGES CAN AFO BE USED?

This product can be used where temperatures are as low as -65F, or as high as 400F.

SYNTHETIC OIL ASTM COMPARISON

by OilAdmin 0 Comments
TYPICALDATA ASTM TEST EMKARATERL

68H

AircoFridge Optimizer

P.O.E.

VISCOSITYcSt/100° D445-88 63.0-73.0 66.9
VISCOSITYcSt/212° D445 8.80-9.80 9.6
VISCOSITYINDEX D2270 ? 124
POURPOINT°F D97 -20° -40°
FLASHPOINT°F D92 170° 518°
ANILINEPOINT°F D611 ? N/R
DIELECTRIC STRENGTH KV D877 ? 39
COPPER STRIP CORROSION D130 1 1
SEALED CHAMBER DISCOLORATION D1500 (1.0)CLEAR (0)CLEAR
CHLORIDESPPM D808 <5 <5
FALEX MODIFIED WEAR TEST LUBRICITY RATING,

LBS OF FORCE APPLIED

19 582.22*

What Do You Gain By Using AircoFridge Optimizer

by OilAdmin 0 Comments
  • Reduced energy costs: Impacts kWh and may impact kVA(demand) portion of the electric bill
  • Extended equipment life
  • Significantly reduced unscheduled maintenance
  • Helps protect compressor from power brownouts and high heat conditions.
  • A/C, chillers and refrigeration produce cooler, crisper and dryer air. Less humidity, shorter run time.
  • Coolers and freezers reach and maintain proper temperatures.
  • More comfortable work environment
  • Reduce greenhouse gas emissions
  • Meets and or exceeds ASHRAE  Standards: ANSI/ASHRAE 97
ASHRAE : American society of heating, Refrigeration and Air Conditioning Engineers

FRICTION activated ANTI-WEAR COMPONENT

  • FRICTION activated ANTI-WEAR COMPONENT:

The friction activated Component, the second line of defense against wear, chemically polishes bearing surfaces on an as needed basis. This phenomenon gives equipment treated with the AircoFridge Optimizer two significant advantages over untreated units. First, the chemical friction is reduced. Second, the Component provides damage control in the event of total lubrication failure. It is important to note that this chemical polishing takes place only where high friction exists.

As stated in the previous section, the contact activated Component forms an extreme pressure barrier on metal surfaces. Under heavy loads, this barrier can be worn away. As this happens, however, the barrier is quickly replaced by the contact Components (which is uniformly distributed in the oil). Under sever operating conditions, such as a rough bearing surfaces or lubrication failures, the protective barrier begins to fail (it wears off faster than it can be replaced). When the moving surfaces come in contact, friction increases and temperatures rise dramatically at the high wear spot. These high temperatures (over 400˚F) weaken internal chemical bonds of the contact activated Component and allow it to transform into the “friction activated” Component. This Component, in turn chemically interacts with the surface atoms of the metal (to which it is bonded), in such a way

as to provide a chemical polishing action. The higher the wear (the higher the temperature), the faster the friction activated Component forms and the quicker the chemical polishing action occurs. When friction is reduced, the Component is stable and chemical polishing stops. The friction-activated Component performs only when and where it is needed. The friction-activated Component can actually eliminate minor bearing defects and rough spots.

CONTACT activated ANTI-WEAR COMPONENT

  • CONTACT activated ANTI-WEAR COMPONENT:

The contact activated Component is the first line of defense. This Component chemically bonds to metal surfaces upon contact and forms a thin extreme pressure barrier. The refrigeration oil, on the other hand, has no strong affinity for metal. No chemical bonding takes place. Since refrigeration oil is not attracted to metal, it can easily be wiped off or squeezed out under loads. Consequently, it offers little protection when hydrodynamic lubrication fails. Hydrodynamic lubrication failures occur during compressor start-up and shutdown, under extensive loads, or locally on rough bearing damage and accelerated equipment wear. Depending upon the compressor’s design, abrasive metal particles (suspended in the lubrication oil) can migrate throughout the machine and cause further damage.

 

The contact activated Component protects against damage incurred during hydrodynamic lubrication failure. This is possible because the Component is chemically bonded to the metal and is not easily removed. The extreme pressure barrier provides a lubrication cushion between two moving components to reduce metal-to-metal contact and surface wear. This bonding makes the protective barrier difficult to remove. In fact, it can only be removed with a powerful chemical or by mechanical means.