Volkswagen Polo Service & Repair Manual: Checking
– |
Connect pressure gauge battery (A/C service station). |
– |
Take pressure gauge readings. There are two possible results
A and B. |
|
|
|
Ambient
Temperature in °C (°F) |
Pressure in
Refrigerant Circuit in Bar (psi) Positive Pressure |
15 (60) |
3.9 (57) |
20 (68) |
4.7 (68) |
30 (86) |
6.7 (97) |
40 (104) |
9.1 (132) |
A- The pressure in the refrigerant circuit is lower than the
pressure specified in the table. There is not enough refrigerant
in the circuit. |
- Search for leak with leak detection device. |
- The pressure release valve is open, check coolant fan
activation according to the wiring diagram. |
Check refrigerant pipes and hoses to see if they are bent
too sharply (cross-section constrictions) or have external
damage. If no malfunction is found, flush refrigerant circuit. |
B - The pressure in the refrigerant circuit matches the
table or is higher. |
– |
Set A/C system to maximum cooling output. |
– |
Open vents in instrument panel. |
The A/C compressor is driven by the engine via the magnetic
clutch using the ribbed belt. |
Note
If the A/C compressor is not driven, check A/C Clutch -N25-
voltage supply. |
If the voltage supply is OK, repair the magnetic clutch. |
If the A/C compressor is driven, check refrigerant circuit: |
– |
Bring engine speed up to 2000 RPM. |
– |
Observe manometer battery: |
|
|
|
Increasing from pressure with engine not running to a
maximum of 20 bar (290 psi). |
Decreasing from pressure with engine not running down to 1.3
bar (18.9 psi). |
|
Radiator and condenser are clean (clean if necessary).
The ribbed belt for the A/C compressor and alternator
tensioned correctly.
...
Note
Connecting service station. Refer to
→ Chapter „Connecting Service Station“.
Observe test requirements ...
Other materials:
Tires, Mounting, Run-Flat Tires and Ultra High Performance Tires
Only trained personnel can perform the assembly work on
run-flat tires and ultra high performance tires.
If equipped check the tire pressure monitoring sensor with
the vehicle diagnostic tester and if necessary replace.
...
Decorative Trims, Replacing, Bolted Decorative Trims
These disc wheels are equipped with replaceable decoration
elements. Note the following when installing.
–
Clean the thread in the disc wheel before screwing in the
new bolts.
...
Professional Cleaning Cloth -VAS6006
Definition:
Professional Cleaning Cloth -VAS6006-
Product Description:
The cloth is suitable for dry cleaning surfaces (dust and
microdust). I has anti-static properties when used to clean
pl ...
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