Vertiv | Liebert XDH | User Manual
40
Startup Commissioning
No. Description
No.
Description
1
Sight glass 3
5
Acceptable operating level
2
Sight glass 2
6
Recommended operating level
3
Sight glass 1
7
Operation level is not allowed below sight glass 3
4
Operation level is not allowed above sight glass 1
Figure 5-3 Refrigerant Sight Glass and the Current Refrigerant Liquid Level
5.2.3.Refrigerant Charging
• When charging the refrigerant, ensure that the circuit breakers of the XDP are open, the circuit breakers of
the XDH are closed, and the fan is running.
•
At the inlet Schrader valve, start charging in the refrigerant inside the system. When the refrigerant cannot
be charged in, stop the charging.
• Use the refrigerant cylinder heater to heat the refrigerant tank during refrigerant charging, at least to ensure
the maximum level of refrigerant reaches in the inspection sight glass.
shows the position of the
liquid refrigerant in the sight glass of the liquid tank.
•
The pump should be powered Off during refrigerant charging process.
•
The volume of XD system is large. It is strongly recommended that one or more refrigerant charging machine
is used.
• Refrigerant charge can be calculated according to the
. The pump should be powered On only
when charging is finished.
