Operation CHARM: Car repair manuals for everyone.

Filling From 1 Liter Refrigerant Bottle






1 Close the cocks on the blue low-pressure hose and red high-pressure hose on the pressure gauge stand.


WARNING: Only the low-pressure side of the compressor may be filled with refrigerant from a 1 liter refrigerant bottle

If the bottle is connected to the high-pressure side, there is a danger of it exploding when the car's engine is started.


2 Close the valve in the red high-pressure hose quick connect coupling on the compressor by unscrewing the knob.
3 Then remove the red high-pressure hose quick connect coupling from the compressor and reinstall the protective plug over the connection.







4 Place the bottle with refrigerant upside-down and open the cock on the bottle.


Important : The refrigerant bottle must be inverted so that it may be fully emptied.


5 Charge with 200 grammes of refrigerant by carefully opening the cock on the blue low-pressure hose on the pressure gauge stand for about 5 seconds.

200 grammes of refrigerant corresponds to a pressure of 4 - 5 bar.

6 Move the A/C hoses slightly and check with a leakage detector designed for R134a that there are no leaks in the system.
7 Open the blue low-pressure hose cock on the pressure gauges and continue charging until pressure has stabilized.
8 Close the cock on the blue low-pressure hose on the pressure gauge stand.







9 Start the car and wait until the compressor starts to work. Rev the engine so that the pump vanes in the compressor rotor are forced out (this can be seen as the pressure drops below 3 bar on the gauge beside the blue low-pressure hose on the pressure gauges).
10 Open the cock on the blue low-pressure hose on the pressure gauge stand when the compressor starts working so that the remaining amount of refrigerant is sucked into the compressor.
11 Close the cock to the blue low-pressure hose on the pressure gauges when the bottle with refrigerant is emptied.
12 Close the valve on the blue low-pressure hose quick connect coupling on the compressor by unscrewing the knob.
13 Remove the blue low-pressure hose quick connect coupling from the compressor and reinstall the protective plug over the service valve.
14 Close the cock on the refrigerant bottle.
15 Remove the yellow hose from the refrigerant bottle.