Check The Pressure In The Refrigerant Circuit (With The A/C Service Station); Test Requirements Before The Pressure Test - Skoda Citigo 2012 Workshop Manual

9 Check the pressure in the refrigerant
circuit (with the A/C service station)
⇒ "9.1 Test requirements before the pressure test", page 71
⇒ "9.2 Check pressures", page 72
⇒ "9.3 Continuation of the test depending on the arrangement of
the refrigerant circuit", page 74
⇒ "9.4 Pressure test for vehicles with throttle and catch pan (with
AC compressor regulated from the inside)", page 74
⇒ "9.5 Pressure test for vehicles with expansion valve and fluid
reservoir (with AC compressor regulated from the inside)",
page 78
⇒ "9.6 Pressure test for vehicles with expansion valve, fluid res‐
ervoir and with regulating valve for compressor of air conditioning
system N280 (with AC compressor regulated from the outside)",
page 83
9.1 Test requirements before the pressure
test
• The radiator and condenser are clean (if necessary clean).
• The heat-protection insulation on the expansion valve is O.K.
and is correctly mounted. See vehicle-specific Workshop Man‐
ual ⇒ Heating, Air Conditioning; Rep. gr. 87 .
• The V-ribbed belts for AC compressor and AC generator are
O.K. and are correctly tensioned.
• All the air guides, covers and seals are O.K and are correctly
mounted.
• No fault has been detected on the electrical system, the vac‐
uum system and the air guide with the fault finding ⇒ Vehicle
diagnostic tester, ⇒ Current flow diagrams, Electrical fault find‐
ing and Fitting locations and ⇒ Heating, Air Conditioning; Rep.
gr. 87 .
• The self-diagnosis of the air conditioning system (e.g. with the
⇒ Vehicle diagnostic tester) does not detect any fault, no
switch-off condition of the AC compressor is displayed in the
measured value block (only for vehicles with air conditioning
system self-diagnosis).
• The air flow rate through the dust and pollen filter is not im‐
paired by contamination. See vehicle-specific Workshop Man‐
ual ⇒ Heating, Air Conditioning.; Rep. gr. 87 ⇒ Rep. gr. 87
• The heating and air conditioning unit does not draw any sec‐
ondary air at the highest fresh air blower speed.
• The air guide flaps in the heating and air conditioning unit, in
the heating and in the evaporator reach their final setting. See
vehicle-specific Workshop Manual ⇒ Heating, Air Condition‐
ing; Rep. gr. 87 .
• The fresh air intake ducts under the front flap and in the pas‐
senger compartment as well as the related water drain valves
are O.K. see vehicle-specific workshop manual⇒ Heating, Air
Conditioning; Rep. gr. 87 .
• Engine is at operating temperature.
• The vehicle is not exposed to the sun's rays.
• The ambient temperature is higher than 15°C.
• All the dash panel vents are opened.
Citigo 2012 ➤ , Fabia 2000 ➤ , Fabia II 2007 ➤ , Fabia II 2009 ➤ , Fab ...
Air conditioning system with refrigerant R134a - Edition 10.2014

9. Check the pressure in the refrigerant circuit (with the A/C service station)

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