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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.

l

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:

l

Use of inappropriate type of

refrigerant oil

l

Lack / excess of refrigerant oil

l

Internal corrosion due to the

presence of humidity in the A/C

loop

l

A/C loop blocked (filter drier

& expansion valve blocked)

Recommendations

l

Choose the compatible refrigerant

oil (type, quantity and viscosity)

with the compressor type, refrigerant

fluid and car application:

l

Never expose refrigerant oil

to ambient air

l

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.com

a cross list with compressor

section and refrigerant

data per car manufacturer

Technical Information & offer

Lubrication