Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C Frame) - Classic Control - Manual (Page 417)

Component Definition and Maintenance 6-73
7000 “C” Frame 7000L-UM300I-EN-P – June 2013
Heat Exchanger
The heat exchanger (HTX1) is normally a liquid-to-air unit made of
copper tubing and copper headers. There are primary and secondary
fans to cool the unit. The fans are controlled by temperature sensor
TS1 (shown in Figure 6.60). A stainless steel liquid-to-liquid plate
type exchanger is also available.
If the temperature is less than 32°C (90°F), the fans will not run. The
primary fan will start when the temperature reaches 38°C (100°F).
The secondary fan will start when the temperature reaches 44°C
(110°F).
Fan
Coolant Inlet
Coolant Outlet
Figure 6.59 – Typical Liquid-to-Air Heat Exchanger