ENGLISH 51 / 78 CAP. 11 - REFRIGERANT FLUID CIRCUIT
18 Internal refrigerant vessel pressure gauge
19 New and exhaust oil scale
2
0 Absolute pressure sensor -1 …+35 bar
21 Automatic mechanical expansion valve
22 Heat exchanger
23 Mechanical no return valve
24 Mechanical no return valve
25 Heating belt
26 Accumulation receiver safety valve (20 bar)
27 Expansion valve protection mechanical filter
28 HP vehicle quick coupler (SAEJ639)
29 LP vehicle quick coupler (SAEJ639)
30 Interception manual valve for internal vessel liquid phase
31 Interception manual valve for internal vessel vapour phase
32 Interception manual valve
33 Exhausted oil container
34 Dryer filter
35 Compressor oil restore separator receiver
36 Exhausted oil distiller double chamber receiver
37 Compressor oil restore capillary circuit
38 Refrigerant accumulation receiver
39 Refrigerant scale
40 New oil container
41 Tracer container
42 Mechanical no return valve
43 Mechanical no return valve
The circuit is made up of 3 main parts:
• the refrigerant fluid tank equipped with four couplers,
o recovered refrigerant inlet,
o liquid refrigerant outlet for recharge,
o outlet towards non-condensable gases discharge valve,
o safety valve.
• The manifold, joint aluminium block, equipped with channelling on which the valves and
other devices are mounted,
o inlet from fluid tank,
o new oil container inlet,
o tracer container inlet,
o hose with HP gauge towards the vehicle,
o hose with LP gauge towards the vehicle,
o outlet towards vacuum pump
o outlet towards refrigerant recovery group
• the refrigerant recovery group, which through its own components enables the following
operations, expansion of the gas recovered from the vehicle, evaporation with exhausted
oil separation, refrigerant dehydration, compression, condensation.
o recovered refrigerant inlet,
o exhausted oil outlet,
o liquid refrigerant outlet towards the tank,
o safety pressure switch.
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