Air conditioning compressor oil (PAG PAO POE) [12s].pdf

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AIR CONDITIONING
COMPRESSOR OIL
PAG, PAO AND POE OILS
THERE ARE LOTS OF OILS AVAILABLE,
WHICH ONE IS RECOMMENDED?
Oil plays an important role in the air-conditioning system,
no matter whether it's required when the compressor is replaced or for
refilling during the air-conditioning service. Like blood in the human body,
the oil fulfills vital tasks in the air-conditioning system.
The use of high-grade compressor oil is therefore critical for the reliable
and continuous operation of the system. The use of low-quality or even the
wrong oil – just like with the engine – leads to increased wear, premature
compressor failure, and loss of warranty/guarantee.
Note:
Using the wrong oil can cause damage. Vehicle and manufacturer-specific information
must therefore be observed accordingly.
PAG OIL
Product characteristics
Advantages/Effect
➔ Fully synthetic, hygroscopic oils based on polyalkylene glycol
➔ Used by many vehicle and compressor manufacturers for
air-conditioning systems intended for the refrigerant R134a,
this oil is available in a variety of viscosities
➔ New special PAG oils 46 YF and 100 YF, both suitable for
refrigerants R1234yf or 134a
➔ PAG oils are highly miscible with R134a (PAG oils 46 YF and
100 YF also with R1234yf) and are suitable for lubricating the
air conditioning systems of most passenger and commercial
vehicles.
➔ The choice of the right viscosity is crucial when using PAG oils
(PAG 46, PAG 100, PAG 150). The vehicle manufacturer’s
specifications and approved products should be observed.
Additional details
The disadvantage of PAG oils is that they are hygroscopic, i.e. they
absorb and bind moisture from the ambient air. This is why opened
oil containers must be resealed immediately and the residual oil
only has a limited shelf life. This is particularly important for the
fresh oil containers at the air conditioning service unit.
Now also available
New PAG Oil SP-A2 from SANDEN for special, electrical SANDEN compressors.
Article number 8FX 351 213-141.
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PAO OIL 68 AND
PAO OIL 68 PLUS UV
Product characteristics
Additional details
➔ Not hygroscopic: unlike other oils they do not absorb moisture
from the air
➔ Can also replace the different PAG oils currently used (observe
usage overview!): You now only need to stockpile one oil
instead of three
➔ Has already been successfully used for over 15 years
➔ Contributes to an increase in air conditioning performance
➔ No adverse effects on components of the air conditioning cycle
(also applies to use in air conditioning service stations /
confirmed by manufacturer using the sealed tube test compliant
with the ASHRAE 97 standard)
➔ This oil is available with (PAO oil 68 Plus UV) or without
(PAO oil 68) an added contrast agent
➔ Using PAO oil 68 and PAO oil 68 Plus UV in compressors from
Behr Hella Service maintains your full warranty entitlement.
Is PAO Oil 68 compatible with other oils?
➔ PAO Oil 68 doesn't have any harmful effects on fluoroelastomer
materials, such as hoses.
➔ Since PAO Oil 68 is compatible with many other lubricants and
refrigerants, PAO Oil 68 can be used both for refilling and to
replace the whole system oil capacity. Due to the independent
molecular structure and density, PAO Oil 68 mixes to a certain
extent with other oils, but separates from them again when it
"comes to rest", and does not enter into a longer-term
compound.
➔ This guarantees that the necessary viscosity of the oils is
maintained and there is no change in the overall viscosity (see
Figs 1 and 2).
The clear version of PAO oil 68 (without leak detecting
agent) is also suitable for use with R1234yf and approved
for use in electrical compressors in hybrid vehicles.
PAO Oil 68
➔ Only a little oil circulates in the system because it combines
only slightly with the refrigerant
➔ As much as possible remains in the compressor – where the
oil is needed
➔ The oil film inside the components makes for a better seal and
reduces friction between the moving parts of the compressor
➔ Lower operating temperature and wear
➔ This increases operational reliability and reduces noise, cycle
times and the compressor’s energy consumption
PAO Oil 68 Plus UV
➔ The same positive characteristics as PAO oil 68
➔ In addition, it incorporates a highly effective contrast agent for
UV leak detection
➔ Low percentage volume concentration of the contrast agent
with the following advantages: preserves the oil’s positive
properties and avoids negative effects on system components
or servicing equipment
➔ Suitable for use as the sole oil for filling the entire system, with
no negative effects
Advantages/Effect
How was PAO Oil 68 Plus UV tested?
➔ PAO oil 68 Plus UV has been tested by the manufacturer and by
independent institutes. For example, its chemical stability was
established using the “sealed tube test” in compliance with the
ASHRAE 97 standard. This test evaluates the interaction between
the refrigerant, the refrigerant oil, the various O-ring materials
and the metals that are used in air conditioning systems.
➔ All the tests showed a positive result, confirming that negative
effects on components in the vehicle air-conditioning system
or the air-conditioning service station can be excluded. PAO oil
68 Plus UV can thus be filled directly into a component such as
a compressor, or introduced into the refrigerant circuit by the
air-conditioning service station.
Can PAO Oil 68 be used where there are
humidity problems?
➔ PAO-Oil 68 is not hygroscopic, i.e. unlike other oils, it does not
absorb moisture from the ambient air. This means that
humidity-related problems, e.g. icing on components or the
formation of acids, can be combated simply by using PAO Oil
68. The range of possible applications and
the storage stability of PAO Oil 68 are both much greater than
for conventional oils.
Special features and properties?
➔ No risk of oil collecting in the evaporator and the associated
deterioration in cooling performance
➔ An oil film in the components improves the seal
➔ Reduction of the friction between the components
➔ Reduced energy consumption of the compressor
➔ Unique combination of highly refined, synthetic oil and special
performance-enhancing additives
➔ Very large operating temperature range (–68 to 315°C)
➔ Low Vol %-concentration of the highly active contrast agent
PAO Oil 68 Plus UV, which means protection and reduced wear
of the system components and service units
PAG and PAO Oil 68 mixed
PAG and PAO Oil 68 separated
PAO Oil 68
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