Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C Frame) - Classic Control - Manual (Page 255)

4-50 Commissioning
7000L-UM300I-EN-P – June 2013 7000 “C” Frame
Fan
Coolant Inlet
Coolant Outlet
Fan
Coolant Inlet
Coolant Outlet
Figure 4.17 – Typical Liquid-to-air Heat Exchanger
The tubing to the heat exchanger should have been cleaned by the
installation personnel. If they are still in the process of installation
you should verify that the piping will be cleaned. Otherwise the
filling process will probably produce a lot of debris in the first mesh
filter and may require several cleanings.
On a liquid-to-air heat exchanger, there will be fans on the heat
exchanger to move the air over the cooling tubes within the exchanger.
Ensure these fans are wired properly per the electrical print.
On a liquid-to-liquid heat exchanger, process water will be required
to transfer heat from the drive coolant. The water temperature,
pressure and flow rate are as specified by the factory on the piping
schematic drawing mounted inside the pump cabinet.
Pumping Cabinet Control Power Checks
There will be 3 phase power brought into the control power cabinet
and jumpered to the pumping control cabinet. This determines the
direction of rotation of the pumps. There will be arrows on the pump
showing the proper direction of rotation, and it can be visually
verified by looking at the non-drive end shaft. Manually activate the
pump control relays and verify the rotation.
Manually activate the fan control relays and ensure each of the fans
on the heat exchanger is rotating. Also ensure that the fans have
been wired to the correct relays (as specified by factory).