2014/07/25 Caterpillar

Generator Set:

C15 GEN SET (S/N: NAP1-UP)

C18 GEN SET (S/N: NAW1-UP)

Description of Change: Improved design for Battery Charger is now used on the Generator Sets that are listed above. The correct wiring for the battery charger is updated in the new design. The wire AC101 is connected to "CUSTL1" and the wire AC199 is connected to "CUSTl2" on the battery charger and at the Electrical Panel Group.

Adaptable To: Production units built June 6, 2014 and later have been updated to the latest design.

Select 115 V operation with internal AC line voltage switch for production units built prior to June 6, 2014. Refer to rework procedure.

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 should also have the necessary training, skills, and tools in order to perform these functions properly.

Safety precautions and warnings are provided in this instruction, on the product, and in this product's Operation and Maintenance Manual (OMM). 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 that might involve a potential hazard.

Therefore, the warnings in this publication, the warnings that are on the product, and the warnings that are in the OMM are not all inclusive. If a tool, a procedure, a work method, or operating technique that is not recommended by Caterpillar is used, the user must ensure that it is safe for the user and for other people to use.

The user should ensure that the product will not be damaged or the product will be made unsafe by the operation, lubrication, maintenance, or the repair procedures that are used.

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Personal injury or death can result from high voltage. When power generation equipment must be in operation to make tests and/or adjustments, high voltage and current are present. Improper test equipment can fail and present a high voltage shock hazard to its user. Make sure the testing equipment is designed for and correctly operated for high voltage and current tests being made. When servicing or repairing electric power generation equipment: Make sure the unit is off-line (disconnected from utility and/or other generators power service), and either locked out or tagged DO NOT OPERATE. Remove all fuses. Make sure the generator engine is stopped. Make sure all batteries are disconnected. Make sure all capacitors are discharged. Make sure residual voltage in the rotor, stator and the generator is discharged. Failure to do so could result in personal injury or death.

Illustration 1	g00104545

Attach a "Do Not Operate" warning tag to the start switch or to the controls before you service the equipment.

Rework Procedure

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Illustration 2	g03703964

1. Remove four screws securing battery charger cover.

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2. Locate internal AC line voltage switch (1) and select 115 V operation (switch in up position).

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Illustration 4	g03703967

3. Verify neutral is landed at customer shore power connection.

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Illustration 5	g03703964

4. Reinstall cover and tighten four screws.

The new design is adaptable to and effective with the serial numbers that are listed in Table 1.