Regular maintenance of the battery module is an absolute necessity. Periodic inspections of battery and terminal voltages, specific gravity, and connection resistance should be made. Strictly follow the procedures outlined in the battery manufacturer’s manual.

Valve-regulated lead-acid (sealed-top) batteries do require periodic maintenance. Though they do not require maintenance of electrolyte levels, battery voltage and connection resistance checks should be made.

Since individual battery characteristics are not identical, and may change over time, the UPS module is equipped with circuitry to equalize battery cell voltages. This circuit increases charging voltage to maintain flooded type battery cells at full capacity.

NOTE

Do not use equalize charging with valve-regulated lead-acid batteries.

Consult the battery manufacturer's manual for specific information about equalize charging.

The equalizing charge time period is adjustable from zero to 72 hours and can be initiated automatically or man- ually. Refer to 3.0 - Operation.

Battery Voltage Record

Date

Float Voltage

Nominal Voltage

Ambient Temp.

(Volts DC)

(Volts DC)

(°F)

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* To be completed by Liebert Customer Service Representative at time of start-up.

Maintenance 113

DISCONTINUED

PRODUCT

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Liebert Series 600T manual DIS Product