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Function
The A/C loop’s performance
and longevity depends on the
refrigerant oil as:
l
It helps cooling down the
compressor and removing
impurities from the system.
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It also keeps the A/C loop
sealed by reinforcing each
component’s watertightness.
l
It prevents damages to the
compressor by lubricating
moving parts.
Each oil is specific to the compressor
type and car application.
Replacement
Refrigerant oil has to be reinjected
every time there is a maintenance
or repair operation on the A/C loop.
Below are some typical problems
due to refrigerant oil:
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Use of inappropriate type of
refrigerant oil
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Lack / excess of refrigerant oil
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Internal corrosion due to the
presence of humidity in the A/C
loop
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A/C loop blocked (filter drier
& expansion valve blocked)
Recommendations
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Choose the compatible refrigerant
oil (type, quantity and viscosity)
with the compressor type, refrigerant
fluid and car application:
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Never expose refrigerant oil
to ambient air
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It is essential to add oil when:
- Refilling the A/C loop with
refrigerant - 10 mL
- Replacing the condenser - 20 mL
- Replacing the compressor -
check quantity in catalogue
- Replacing the receiver drier
& hoses - 15 mL
- Replacing the accumulator - 50 mL
- Replacing the evaporator - 30 mL
l
Appropriate protection should
be worn: working clothes, safety
gloves & goggles
Find also at
www.valeo-techassist.coma cross list with compressor
section and refrigerant
data per car manufacturer
Technical Information & offer
Lubrication