Troubleshooting guide
1
5
3
16
17
4
2
7
9
11
14
15
8
6
13
10
OUT
IN
AIR OFF
COIL
RETURN AIR
18
12
4.0 OPERATION
4.8 REFRIGERANT CIRCUIT AND COMPONENTS
FIGURE 4.8: TYPICAL REFRIGERANT PIPING AND COMPONENTS
1. Evaporator Coil
2. Thermo Expansion Valve
3. Sensing Bulb for TX Valve
4. Brass Distributor
5. Pressure Equalization for TX Valve
6. Insulated Suction Piping
7. Uninsulated Liquid Piping
8. Suction Access Valve/Charging Valve
9. Compressor
10. Moisture Indicator Sight Glass
11. Liquid Line Filter Drier
12. High Pressure Switch
13. Hot Discharge Piping
14. Shell and Tubes Condenser
15. Fusible Plug
16. High Pressure Access/Charging Valve
17. Pressure Relief Valve for 6" and Larger
Condenser Shell
18. Low Pressure Switch