Chapter 5: Subsystem Maintenance and Upgrading
BBU. Charging will resume automatically if you remove and
5.4.1BBU Warnings and Precautions
Install or replace the BBU with BBUs supplied by your EMD vendors only. Use of battery cells provided otherwise will void our warranty.
Always dispose of a replaced battery in an ecologically responsible manner. Dispose of used BBUs at authorized battery disposal sites only.
Do not use or leave the BBU near a heat source. Heat can melt the insulation and damage other safety features of battery cells, possibly will cause acid leak and result in flames or explosion.
Do not immerse the BBU in water nor allow it to get wet. Its protective features can be damaged. Abnormal chemical reactions may occur, possibly cause functional defects, acid leak, and other hazardous results.
Do not disassemble or modify the BBU. If disassembled, the BBU could leak acid, overheat, emit smoke, burst and/or ignite.
Do not pierce the BBU with a sharp object, strike it with a hammer, step on it, or throw it. These actions could damage or deform it and internal
If a BBU leaks, gives off a bad odor, generates heat, becomes discolored or deformed, or in any way appears abnormal during use, recharging or storage, immediately remove it from the subsystem and stop using it. If this is discovered when you first use the BBU, return it to EMD.
5.4.2Replacing a Faulty BBU
To replace the BBU, please follow these steps:
Step 1. Remove the faulty BBU from the chassis. The BBU module is secured to the chassis with two (2) screws. Loosen the retention screws located at the sides of the BBU faceplate, then pull out the BBU. (See Figure