Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C Frame) - Classic Control - Manual (Page 254)

Commissioning 4-49
7000 “C” Frame 7000L-UM300I-EN-P – Juen 2013
The liquid cooling system is tested for leaks at the factory, but
shipping damage can create leaks in the liquid cooling system. All
leaks must be repaired prior to start up.
A T T E N T I O N A T T E N T I O N The E-Stop button on the drive does not
interrupt the 3-phase control power. E-Stop
only opens the input contactor providing the
Medium Voltage on the drive input. This means
that the cooling system will continue to run.
Heat Exchanger Checks
The PowerFlex “C” Frame drive requires a heat exchanger to
transfer heat from the drive coolant to an external medium. There
should be connections from the drive pumping cabinet to the heat
exchanger. Ensure that these connections are completed and
attached to the proper locations (inlet / outlet) on both the drive and
the heat exchanger.
These connections should be made from a non-reactive material such
as Copper, CPVC (Thick wall, rated for 80°C), HDPE, or Stainless
Steel. For questions on other materials, please contact the factory.
The customer should not be using lead solder with the connections,
as the coolant will deteriorate this connection over time.
When making connections to the drive from the heat exchanger,
ideally the connections or the heat exchanger should not be at an
elevation higher than the internal drive piping (below inlet of
reservoir). This allows the drive to remove any trapped air in the
system. If the heat exchanger is at a higher elevation, then air release
valves should be installed at the highest point.
Note: The largest heat exchanger is 287 cm (113 inches) tall.
Commissioning the
Cooling System