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Option 3
Cartridge drier
Example of an application in the Valeo Air Condi-
tioning catalogue. This example shows that, when
the condenser 818004 is replaced, the receiver drier
509593
is
supplied with the condenser. It is mounted
on the condenser in production. This option is shown
in the Information column (I), which contains the
pictogram of the drier cartridge.
What you need to know to
become N°1. Recommendations
on the receiver drier.
The receiver drier must be replaced whe-
never the air conditioning loop is opened.
For example, after an accident in which
the condenser was damaged, the receiver
drier must be replaced, or the desiccator
will no longer retain the humidity in the
circuit. It will become saturated with hu-
midity.
Due to its very role, the receiver drier is
hygroscopic. Therefore it is essential to
obey the basic rules when replacing it on
a vehicle or the new receiver drier may be
damaged.
Receiver driers are fitted with compulsory
plugs that must be removed as late as pos-
sible, i.e. just before they are installed.
Warning! If the receiver drier is not replaced,
the operation of the loop will deteriorate
and the risk of a breakdown will occur (bloc-
ked expansion valve, impurities in the cir-
cuit, etc.).
In any case, the receiver drier must be ins-
talled in the loop at the very last moment,
just before the vacuum procedure.
The IRD ‘Integrated Receiver Drier’.
Both option 2 and option 3 integrate the
receiver drier in the condenser refrigerant path.
The IRD is not just about integration: it allows
reaching a much higher level of condensation
in the condenser in the long run despite
refrigerant level fluctuations.
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