Temperature Test Of Cooling Capacity - Skoda Citigo 2012 Workshop Manual

Note
This complaint may also arise if there is too much refrigerant
♦
oil in the circuit (when changing the AC compressor, for ex‐
ample the refrigerant oil volume was not adapted). For this
complaint, the refrigerant circuit must be flushed with refriger‐
ant R134a.
The refrigerant oil must be drained out of the AC compressor
♦
via the oil drain plug (replace O-ring ⇒ Electronic Catalogue
of Original Parts ). In order to facilitate this, the V-ribbed belt
pulley or the clutch disc of the magnetic coupling must be
turned by hand on the AC compressor. Then, the refrigerant
circuit must be filled with refrigerant oil to its total filling capacity
according to the vehicle-specific workshop manual ⇒ Heating,
Air Conditioning; Rep. gr. 87 (min. 70 grams directly in the AC
compressor).
On an air conditioning system which otherwise functions perfect‐
ly, water sprays out of the vents (the dash panel or in the footwell):
– Check the perfect laying of the condensation water drain, it
must not be crimped or bent.
– Check the condensation water drain valve, it must not stick
with wax or underbody sealant and must properly open and
close.
– Check the plenum chamber cover, it must not be damaged
and must be installed correctly (no water may flow into the
evaporator).
– Check the water drainage openings of the plenum chamber,
they must not be blocked (e.g. through leaves).
8.2

Temperature test of cooling capacity

– Measure the ambient temperature.
– Close the front flap, windows and sliding roof.
– Open all dash panel vents.
– Position the air distribution to person flow.
– Insert the measuring tip of the temperature probe -2- in the
middle -1- of the dash panel vents in the indicated area (vehi‐
cle-specific) -3-, in such a way that it is located at least 20 mm
behind the fins of the vents.
– Start engine.
– Switch on the air conditioning system and set to maximum re‐
frigerating capacity, see
⇒ "9.1 Test requirements before the pressure test",
page 71 .
– Increase and maintain engine speed at 2000 rpm.
Note
Start of time measurement (5 min).
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Air conditioning system with refrigerant R134a - Edition 10.2014
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8. Complaints