Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C-Frame) - ForGe Control - Manual (Page 427)

Rockwell Automation Publication 7000L-UM301D-EN-P - June 2014 427
Appendix
D
Preventative Maintenance Schedule
PowerFlex 7000
Maintenance Schedule Rockwell recognizes that following a defined maintenance schedule will deliver
the maximum product availability. By rigorously following this maintenance
schedule, the Customer can expect the highest possible uptime. This Annual
Preventative Maintenance Program includes a visual inspection of all drive
components visible from the front of the unit, resistance checks on the power
components, power supply voltage level checks, general cleaning and
maintenance, checking of all accessible power connections for tightness, and
other tasks. For more details, refer to
Component Definition and Maintenance
on page 265 (Chapter 5) of this User Manual.
I – Inspection
This indicates that the component should be inspected for signs of excessive
accumulation of dust/dirt/etc. or external damage (e.g. looking at Filter
Capacitors for bulges in the case, inspecting the heatsinks for debris clogging the
air flow path, etc.).
M – Maintenance
This indicates a maintenance task that is outside the normal preventative
maintenance tasks, and can include the inductance testing of Line Reactors/DC
Links, or the full testing of an isolation transformer.
R – Replacement
This indicates that the component has reached its mean operational life, and
should be replaced to decrease the chance of component failure. It is very likely
that components will exceed the design life in the drive, and that is dependent on
many factors such as usage, heating, etc.
C – Cleaning
This indicates the cleaning of a part that can be reused, and refers specifically to
the door-mounted air filters in the liquid-cooled drives and some air-cooled
drives.