Rockwell Automation Publication 7000-UM202D-EN-P - May 2018 185
Preventative Maintenance Schedule Appendix C
• Verify torque on heatsink bolts (electrical connections to bullet
assemblies) is within specifications (13.5 N•m).
• Clean all contaminated components using a vacuum cleaner and wipe
clean components where appropriate.
• Note: An important component to check for contamination is the
heatsink. The fine grooves in the aluminum heatsinks can capture
dust and debris.
5. Carry out the physical inspection and verification for the proper
operation of the contactor/isolator interlocks, and door interlocks.
• Carry out the physical inspection and verification for the proper
operation of the key interlocks.
• Physical verification of the additional cooling fans mounted in the
AC line reactor cabinet, Harmonic filter cabinet for mounting and
connections.
• Carry out the cleaning of the fans and ensure that the ventilation
passages are not blocked and the impellers are freely rotating without
any obstruction.
• Carry out the insulation resistance testing of the drive, motor,
isolation transformer/line reactor, and the associated cabling.
•Refer to page 195
for insulation resistance testing procedure.
• Check clamp head indicator washers for proper clamp pressure, and
adjust as necessary.
Refer to page 92
for details on proper clamp pressure.
Control Power Checks (No Medium Voltage)
1. Apply control power to the drive, and test power to all of the vacuum
contactors (input, output, and bypass) in the system, verifying all
contactors can close and seal in.
2. See publication 1502-UM050
for a detailed description of all contactor
maintenance.
3. Verify all single-phase cooling fans for operation.
4. This includes the cooling fans in the AC/DC Power supplies and the
DC/DC converter.
5. Verify the proper voltage levels at the CPT (if installed), AC/DC power
supplies, DC/DC converter, isolated gate power supply boards.
•See 7000-IN012
for appropriate procedures/voltage levels for the
above checks.
IMPORTANT Do not use a blower.
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