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Vertiv I Liebert LPC I User Manual
An additional amount of refrigerant is calculated according to the formula:
The amount of additional cooling agent (kg) = liquid refrigerant amount added per unit
length (kg / m) × the total length of the liquid extension pipe (m).
The total length of extension piping for the liquid line (m) = Total length of the liquid pipe (m)
- 10m
Table 3.3 depicts the Different liquid line pipe diameters corresponding to the addition
amount of the liquid refrigerant per unit length of the tube outer diameter.
Table 3.3
Liquid pipe diameter
(mm)
of the refrigerant per
unit length (kg / m)
Liquid pipe diameter
(mm)
of the refrigerant per
unit length (kg / m)
12.7 0.107 22 0.321
19 0.245 28 /
3.2
Troubleshooting
LPC units operating on the new service operations model, utilizes a computer monitoring and
control feature to connect to the LPC units via the service tooling. Commissioning process
will monitor and output reports for service can be viewed via computer.
3.2.1 Tooling service connection
When service commissioning tooling terminal switch is connected to the terminal block # 77,
#78, open the software and select the corresponding communication parameters. Serial
number and computer equipment manager matches the COM port, baud rate consistent with
the device (device default 19200), as shown in Figure 3-2.
Figure 3-2 LPC services software communication parameters
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