ASSEMBLING A REFRIGERATION SYSTEM / Diagram

  

The refrigeration system layout (refrigerant flow schematic)

1. Hermetic compressor
2. Discharge pipe
3. Refrigerant condenser
4. Refrigerant receiver
5. Service connection
6. Shut-off valve
7. Refrigerant liquid pipe
8. Filter-drier
9. Refrigerant sight glass
10. Solenoid valve
11. Thermostatic expansion valve
12. Capillary tube with sensor
13. Refrigerant evaporator
14. Service connection
15. Suction pipe
16. Shut-off valve
17. Service connection

The electrical wiring diagram (pump-out/pump-down)

L Electr. connection ‘phase’
N Electr. connection ‘neutral wire’
S1 Main switch (on-off)
TC Thermostat
Y1 Solenoid valve
LP Low pressure switch
HP High pressure cut-off
M1 Condenser fan motor
M2 Evaporator fan motor
OP Overload protection (compressor)
RW Running winding (compressor)
SW Start winding (compressor)
M3 Refrigerant compressor
SR Start relay
UR Unload resistor (C1)
C1 Start capacitor
C2 Running capacitor
H1 Indicator light ‘operation’ green
H2 Indicator light ‘high pressure’ red