Liebert CR035 - 4.2 Vacuum Creation And Refrigerant Charge

22 Chapter 4 Refrigeration Connections
Liebert.CRV Series Air Conditioner User Manual
The equivalent lengths of curves, shut-off valves and check valves are listed in Table 4-3.
Table 4-3 E quivalent lengths of curves, shut-off valves and check valves
Nominal
diameter
E quivalent lengths
90° curve 45° curve 180° curve 90° shut-off valve
Check valve
12mm 0.50m 0.25m 0.75m 2.10m 1.90m
14mm 0.53m 0.26m 0.80m 2.20m 2.00m
16mm 0.55m 0.27m 0.85m 2.40m 2.10m
18mm 0.60m 0.30m 0.95m 2.70m 2.40m
22mm 0.70m 0.35m 1.10m 3.20m 2.80m
4.2 Vacuum Creation And Refrigerant Charge
Warning
1. Check the refrigerant type to be used on the data plate of the air conditioner and on the refrigerating compressor.
2. Poor quality or counterfeit refrigerant will damage the system seriously. For the system abnormality, fault or damage caused
by using poor quality or counterfeit refrigerant, Emerson Network Power Co., Ltd. will not assume the warranty responsibility.
Pump and refrigerant charging cylinder connection for vacuum creation and refrigerant charge is shown in Figure 4-3.
R.L.
10
10a
11
11a
14
12
10b
Figure 4-3 Pump and refrigerant charging cylinder connection