Liebert Rack Enclosure With Integrated Water-Based Cooling XDK - Manual (Page 16)

Installation and Commissioning
12
5.3 Water Connection
The heat exchanger can be pulled out for servicing
Water pipes should be connected so that the heat exchanger can be pulled out when the connection is
undone. If the heat exchanger is connected to the water circuit using threaded fittings, the pipe fitting
must be supported on tightening.
Before commissioning the server cabinet, the pipe connections should be checked for leaks according
to local codes.
5.3.1 Preparing Heat Exchanger for Initial Commissioning
Check the mechanical installation and the supply pipe connection.
Figure 6 Heat exchanger access
1. Carefully bleed heat exchanger when filling the system.
2. Open the air bleed valve until the water coming out has no bubbles.
3. Close this valve after bleeding.
Figure 7 Control valve
4. If necessary, retighten threaded fittings.
5. After an extended period without use, and particularly in case of risk of freezing temperatures,
the heat exchanger and the supply pipe must be drained of all fluid.
6. Drain completely by blowing out with compressed air and remove all bleed and drain plugs.
Remove this air duct
for bleeding, draining the
heat exchanger and
checking the valve
Water supply
Drain valve
Air bleed valve
Water return