BEARING 1S2353 - Caterpillar

Replace the under voltage breaker coil every 5 years.Refer to Test and Adjust, UENR1799 for the procedure to remove and install the under voltage breaker coil.High voltage levels are present within the UPS. The UPS should be opened only by service personnel that are qualified. The UPS must have a proper ground connection to earth.
High voltage may be present. Work on this equipment must be performed by authorized trained personnel. Failure to disconnect the power source before performing maintenance or removing modules exposes personnel to electrical potential. Bodily contact with electrical potential will cause serious personal injury or death.
Failure to connect the unit to a suitable grounding electrode creates an electrical shock hazard. An electrical shock will result in serious personal injury or death.
After power is removed, wait for 5 minutes before the UPS is opened. This action allows capacitors to discharge. Ensure that the capacitors are at a zero energy level before performing work."Personal Protective Equipment" (PPE) suitable to the work being performed must be worn when performing maintenance on the UPS.
High voltage is present. Work on this equipment must be performed by authorized trained personnel. Personnel must be wearing Personal Protective Equipment that meets regulatory requirements to protect the body for the work that is being performed. Failure to use appropriate PPE to protect the body will result in serious personal injury or death.
Procedure must be performed by a factory trained technician.
Working with electrical circuits is hazardous and exposes personnel to electrical potential. To ensure safe operation, personnel must be trained in proper operating procedures. Bodily contact with electrical potential will cause serious personal injury or death.
ReferenceRefer to Operations and Maintenance Manual, "General Hazard Information" for additional precautions when working with the UPS cabinets.