Service Training TT-011-0808 Fundamentals of refrigerant circuits.
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Transcript of Service Training TT-011-0808 Fundamentals of refrigerant circuits.
Service Training
TT-011-0808
Fundamentals of refrigerant circuits
Service Training08.2008 • VSQ/TT • 2/14
Contents
Refrigerant circuit with expansion valve
Refrigerant circuit with restrictor
Refrigerant circuit with second evaporator
Components in refrigerant circuit
Service Training08.2008 • VSQ/TT • 3/14
Refrigerant circuit with expansion valve
System overview
F208_004
Service Training08.2008 • VSQ/TT • 4/14
Refrigerant circuit with restrictor
System overview
F208_007
Service Training08.2008 • VSQ/TT • 5/14
Refrigerant circuit with second evaporator
System overview
AB
C
D
Service Training08.2008 • VSQ/TT • 6/14
Components in refrigerant circuit
Condenser Condenser
F208_024
Radiator
Radiator fan
Service Training08.2008 • VSQ/TT • 7/14
Components in refrigerant circuit
From condenser Filter strainer
Dryer
To expansion valve
F208_025
Receiver with dryer
Service Training08.2008 • VSQ/TT • 8/14
Suction point for gaseous refrigerantPlastic cap
U-pipeFilter strainer
Dryer
From evaporator
Hole for refrigerant oil
To compressor
Reservoir with dryer
F208_037
Components in refrigerant circuit
Service Training08.2008 • VSQ/TT • 9/14
Thermostat with sensor lead
Diaphragm
To compressor Out of evaporator (low pressure)
Into evaporator(low pressure)
From condenser (high pressure)
Ball valve
Regulating spring
F208_015
Components in refrigerant circuit
Expansion valve with external diaphragm unit
Service Training08.2008 • VSQ/TT • 10/14
Out of evaporator (low pressure)
To compressor (low pressure)
Into evaporator (low pressure)
Ball valveRegulating spring
From condenser (high pressure)
Pressure compensation holes
Thermal head with special gas filling
Diaphragm
Plunger rod
Components in refrigerant circuit
Expansion valve with internal diaphragm unit
Video "Expansion valve"
F208_017
Service Training08.2008 • VSQ/TT • 11/14
To evaporator
Dirt strainer
O-ring, seals high pressure side against low pressure side.
Calibrated drillingStrainer for atomisation
Components in refrigerant circuit
Restrictor
Caution! Note installation position. Arrow on restrictor points to evaporator
F208_016
Service Training08.2008 • VSQ/TT • 12/14
Round pipe evaporator
Refrigerant return (gaseous)
Components in refrigerant circuit
Evaporator
F208_030
Refrigerant supply (gaseous)
Service Training08.2008 • VSQ/TT • 13/14
Pressure relief valve
Components in refrigerant circuit
Evaporator
F208_056
Service Training08.2008 • VSQ/TT • 14/14
Components in refrigerant circuit
Extraction and charge valves
Car valve insert installed. Use matching tool T10364 to loosen and tighten.
Caution! Always use O-rings with sealing caps.
Service Training08.2008 • VSQ/TT • 15/14
Thank you