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(1) Provide a detailed visual inspection of each cell.

(2) Check all bolt connections in accordance with ANSI/IEEE 450 or ANSI/IEEE 1106 to see if retorquing is required. Retorque to the manufactur­er's specifications if required.

(3) Check intercell, intertier, and battery ter­minal connection resistances.

(4) Check integrity of the battery racks.

d. Special inspections. A special inspection should be made whenever a battery experiences an abnormal condition (such as a severe discharge or overcharge) to ensure that the battery has not been damaged. This inspection should include all the quarterly tests.

14-19. Troubleshooting batteries.

When battery system performance is questionable, all the service checks required under annual inspec­tions will need to be made. Generally, any cell which demonstrates conditions beyond the manufacturer's recommended limits should be replaced. The system should be rechecked to ensure all suspect cells have been removed. Where widespread premature bat­tery failures are encountered, the battery manufac­turer's service department should be contacted for further instructions. Cell polarity reversal, failure to hold charge, and inability to maintain an accept­able specific gravity are conditions which mandate further investigation. When low or high float volt­ages, temperature variations, visual observation of deterioration or swelling, and low open-circuit volt­ages, all exceed the manufacturer's parameters, the cells are probably damaged beyond repair.

Section VII-BATTERY CHARGING EQUIPMENT

14-20.

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