Volkswagen Golf Service & Repair Manual: Detecting leaks
External damage can cause leaks in the refrigerant circuit. Because a small leak will involve only small quantities of refrigerant, leaks should be checked for using an electronic leak detector or by introducing a leak detection additive to the refrigerant circuit. Electronic leak detectors can detect leakage rates of less than 5 grams loss of refrigerant per year. The leak detector should be specific to the composition of the particular refrigerant in use. For example, a leak detector for R12 refrigerant is not appropriate for R134a refrigerant because R134a refrigerant has no chlorine atoms to which the lead detector responds.)
Charge factor
There must be space both for liquid and vapour in a
container. As the temperature rises, the liquid expands. The
space occupied by the vapour becomes smaller. Eventua ...
Refrigerant machine oil
Refrigerant machine oil is miscible (approx. 20%–40%
depending on the type of air conditioner compressor and the
quantity of refrigerant) in the refrigerant. I ...
Other materials:
Dealing with problems with Midtronics -MCR340V- battery tester
Under certain circumstances, the display may show errors or
messages according to status.
The most frequent display messages are listed below,
together with suggested solutions.
Note
For messages not liste ...
Windscreen wiper lever
Fig. 86 Operating the front windscreen
wiper
Fig. 87 Operating the rear window wiper
First read and observe the introductory information
and safety warnings
Move the lever into the required position :
Ⓐ
Switches off th ...
Correct sitting position
Fig. 41 There must be a distance of at
least 25 cm between the driver and the steering wheel The distance to the dash panel
must be at least 10 cm in the knee area
Fig. 42 Correct seat belt routing and head
restraint adjustment
First read and observe the introductory information
and safe ...
