Rockwell Automation Publication 750-TG101A-EN-P - June 2022
29
Chapter 2 Preventative and Predictive Maintenance
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.
Maintenance After a Fault Condition
- An open short circuit protective device
(such as a fuse or circuit breaker) in a properly coordinated motor branch
circuit is an indication of a fault condition in excess of operating overload.
Such conditions can damage control equipment. Before power is restored, the
fault condition must be corrected and any necessary repairs or replacements
must be made to restore the control equipment to good working order. See
NEMA Standards Publication No. ICS-2, Part ICS2-302 for procedures. For
replacements, use only parts and devices that Rockwell Automation
recommends maintaining the integrity of the equipment. Make sure that the
parts are properly matched to the model, series, and revision level of the
equipment.
Final Check Out
- After maintenance or repair of industrial controls, always
test the control system for proper function under controlled conditions to
avoid a control malfunction hazard. For additional information, see NEMA
ICS 1.3, PREVENTIVE MAINTENANCE OF INDUSTRIAL CONTROL AND
SYSTEMS EQUIPMENT, published by the National Electrical Manufacturers
Association, and NFPA 70B, ELECTRICAL EQUIPMENT MAINTENANCE,
published by the National Fire Protection Association.
