Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive (A Frame) - ForGe Control - Manual (Page 178)

178 Rockwell Automation Publication 7000A-UM200C-EN-P - June 2014
Appendix C Preventative Maintenance Schedule
Coils
If a coil exhibits evidence of overheating (cracked, melted or burned insulation),
it must be replaced. In that event, check for and correct overvoltage or
undervoltage conditions, which can cause coil failure. Be sure to clean any residue
of melted coil insulation from other parts of the device or replace such parts.
Batteries
Replace batteries periodically as specified in product manual or if a battery shows
signs of electrolyte leakage. Use tools to handle batteries that have leaked
electrolyte; most electrolytes are corrosive and can cause burns. Dispose of the old
battery in accordance with instructions supplied with the new battery or as
specified in the product manual.
Pilot Lights
Replace any burned out lamps or damaged lenses. Do not use solvents or cleaning
agents on the lenses.
Solid-State Devices
Solid-state devices require little more than a periodic visual inspection.
Discolored, charred or burned components may indicate the need to replace the
component or circuit board. Necessary replacements should be made only at the
PC board or plug-in component level. Printed circuit boards should be inspected
to determine whether they are properly seated in the edge board connectors.
Board locking tabs should also be in place. Solid-state devices must also be
protected from contamination, and cooling provisions must be maintained –
refer to paragraphs titled CONTAMINATION and COOLING DEVICES.
Solvents should not be used on printed circuit boards.
Locking and Interlocking Devices
Check these devices for proper working condition and capability of performing
their intended functions. Make any necessary replacements only with Allen-
Bradley renewal parts or kits. Adjust or repair only in accordance with Allen-
Bradley instructions found in the product User Manuals.
ATTENTION: Use of other than factory recommended test equipment for solid-
state controls may result in damage to the control or test equipment or
unintended actuation of the controlled equipment. Refer to paragraph titled
HIGH VOLTAGE TESTING.