After welding, install the coil and remove the cover of the wiring terminals. Direct the cable through the cable hole in
the cover and plug the two terminals and reinstall the cover.
Figure 2-23 shows the process of connecting the cables of the solenoid valve in a liquid pipe:
Figure 2-23 Connecting the cables of the Solenoid valve
Finally, clip the coil of the valve body, press the coil tightly to ensure complete contact between the coil and valve
body as displayed in Figure 2-24.
Figure 2-24 Fixing the coil
Charging Refrigerant and Adding Refrigeration Oil
The Liebert CR012 air conditioners come pre-charged in the factory with 2Bar Nitrogen. Table 2-8 indicates the
standard charged amount. The users can determine the charging amount of the refrigerant according to the system
configuration and the length of the connection pipes between the indoor and outdoor unit.
The tables 2-8 & 2-9 depict the recommended charging amount of the outdoor unit and the recommended charging
amount for the indoor unit respectively.
Recommended refrigerant charging amount of the outdoor unit
Table 2-8 (unit: kg)
The refilling amount of the refrigerant is calculated using the following formula:
Refrigerant refilling amount (kg) = Recommended refrigerant charging amount of outdoor unit+ recommended
refrigerant charging amount of indoor unit+ refrigerant refilling amount of per meter liquid pipe (kg/m) × total length of
liquid pipe (m)
Refer to the table 2-10 for the refrigerant refilling amount of per meter liquid pipe for different ODs:
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