Volkswagen Polo Service & Repair Manual: A/C Pressure Switch -F129
Note
For switching pressures, removing and installing switches
and switch arrangement and version, see vehicle-specific
refrigerant circuit. |
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This pressure switch has 3 functions: |
1. Switches the coolant fan to the next higher level when
the pressure in the refrigerant circuit increases (approximately
16 bar (232 psi)). |
2. Switches off A/C system if pressure is excessive
(approximately 32 bar (464 psi)), for example. because of
insufficient engine cooling. |
3. Switches off A/C system if pressure is insufficient
(approximately 2 bar (29 psi)), for example. loss of
refrigerant. |
Note
A/C Pressure Switch -F129- replaces the A/C Refrigerant High
Pressure Switch -F23-, A/C Refrigerant Low Pressure Switch -F73-
and the Magnetic Clutch High Pressure Switch -F118-. |
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Note
For switching pressures, removing and installing switches
and switch arrangement and version, see vehicle-specific
refrigerant circuit.
...
Note
For switching pressures, removing and installing switches
and switch arrangement and version, see vehicle-specific
refrigerant circuit.
...
Other materials:
Cleaning and caring for chrome and aluminium trim parts
First read and observe the introductory information
and safety warnings
Use a damp, clean, lint-free and soft cloth to clean the surfaces.
For heavy soiling use a special solvent-free cleaning product.
Polish the chrome and aluminium trim parts using a soft, dry cloth.
NOTICE
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Refrigerant Oil
Refrigerant oil mixes with the refrigerant (about 20 - 40%,
depending on compressor type and amount of refrigerant) and
circulates constantly in the system, lubricating the moving
parts.
Special synthetic refrigerant oils, for example,
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Introduction
This chapter contains information on the following subjects:
→ Indicator lamps
→ Catalytic converter
→ Diesel particulate filter
Additional information and warnings:
Changing gear
Filling the tank
Fuel
Engine oil
Battery
Informati ...
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