Procedure for Installing Load Cell, And RPS Assembly on Each Flywheel on Certain Uninterruptible Power Supplies{4480} Caterpillar

Procedure for Installing Load Cell, And RPS Assembly on Each Flywheel on Certain Uninterruptible Power Supplies{4480}

Usage:

Uninterruptible Power Supply:: ES12F (S/N: CZE1-UP); UPS 1000S (S/N: CZS1-UP); UPS 1000Z (S/N: EDZ1-UP); UPS 120 (S/N: CNK1-UP); UPS 1200S (S/N: CZT1-UP); UPS 1200Z (S/N: HDR1-UP); UPS 150 (S/N: CPC1-UP); UPS 250 (S/N: BEE1-UP; CNM1-UP; APZ1-UP); UPS 300 (S/N: CNJ1-UP; CPZ1-UP); UPS 301 (S/N: CSY1-UP); UPS 500 (S/N: CSE1-UP); UPS 600 (S/N: CTX1-UP); UPS 750 (S/N: CPM1-UP); UPS 900 (S/N: CRY1-UP); UPS500G (S/N: TYD1-UP); UPS600G (S/N: DLD1-UP)

Introduction

This Special Instruction outlines the procedure for installing load cell on the bottom bearing, and RPS assembly and toothed rotor wheel on the top bearing of each flywheel in the flywheel cabinets.

Do not perform any procedure in this special instruction until you have read this special instruction and understand this information.

Important Safety Information

Work safely. Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs.

A person must be alert to potential hazards. This person must also have the necessary training, skills, and tools in order to perform these functions properly.

Safety precautions and warnings are provided in this instruction and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons.

Caterpillar cannot anticipate every possible circumstance of a potential hazard. Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. Avoid using a tool, a procedure, a work method, or an operating technique that is not recommended by Caterpillar. If used, ensure the safety of the operating personnel and others.

Ensure that the product will not be damaged or the product will be made unsafe by the operation, lubrication, maintenance, or the repair procedures.

After power is removed, wait for 5 minutes before the UPS is opened. This action allows the 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.

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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.

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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.

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NOTICE

Damage to the flywheel units can occur if the rotor for the flywheel is turning during the process of moving the unit. Do not move the flywheel units without the bearing retainers installed.

General Hazard Information

Attach a "Do Not Operate" warning tag or a similar warning tag to the keyswitch or to the controls before the system is serviced or before the system is repaired. These warning tags are available from your Caterpillar dealer. Attach the warning tags to the system and to each operator control station.

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Illustration 1	g00104545