Siemens KG39EAI43 - Evacuating refrigeration circuit (R134 a)

10 Connecting hose /red / for service pipe of the dryer (pressure side)
11 Valve / yellow / for vacuum pump
12 Connecting hose / yellow / for vacuum pump
13 Connecting hose / blue / for service pipe of the compressor (suction side)
14 Vacuum pump
1. Close all valves of the filling station.
2. Connect the refrigerant bottle to the red hose.
3. Open the red and black valve.
4. Hold the refrigerant bottle with the tapping valve down.
Liquid refrigerant flows into the cylinder.
5.
The glass tube in the middle of the cylinder serves as a level indic-
ator. The manometer on the cylinder shows the pressure in the cylin-
der.
Select the right scale by turning the scale ring.
6. Read the necessary quantity off from the scale.
7. Mark the necessary volume of refrigerant on the scale ring.
8.
When filling the cylinder, add as much refrigerant so that about 25 g
of the refrigerant remain in the cylinder.
Add refrigerant to the cylinder until the marking on the scale is reached.
9. Close the red and black valves.
10. Remove the refrigerant cylinder.
When removing the refrigerant cylinder, the refrigerant escapes between the red
valve and the refrigerant cylinder.
8.4.4 Evacuating refrigeration circuit (R134a)
Prerequisite:
Dryer and compressor (if required) are replaced.→Page 64
Filler cylinder is filled with refrigerant.→Page 65
All filling station valves are closed.
1. 1. Connect the blue hose to for the intake side to the compressor service con-
nection.
2. Connect the red hose for the pressure side to the dryer service connection.
2. Connect the yellow hose to the vacuum pump.
3. Connect the red hose (below black valve) to the cylinder.
4. Switch on the vacuum pump.
5. Open the yellow valve.
6. Open the black valve on the vacuum gauge.
The status of the vacuum can be read off at the tormeter.
7. Align the red pointer with the black pointer of the vacuum gauge.
8. 1. Open blue valve for the intake side.
2. Open red valve for the pressure side.
Repair
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