Alpha Technologies AlphaCell OPzS - Manual (Page 29)

29 OPzS-BATTERY
12.0 Maintenance, continued
12.2 Maintenance Records, continued
Quarterly Maintenance Schedule (Required)
In addition to the monthly items listed above also measure and record the following:
Measure and record specifi c gravity of each cell.
Measure and record voltage of each cell.
Measure and record the total battery string voltage.
Measure and record the electrolyte temperature of one cell in each row of each rack.
Randomly select and check resistances of 10% of intercell connections.
Annual Maintenance Schedule (Required)
In addition to the monthly and quarterly items, also do the following:
Perform detailed visual inspection of each cell.
Check all bolted connections, re-torque as required. Tighten all bolted connections to the
torque value of 132-177-inch lbs (15–20 Nm).
Check resistance of connecting cable from cell to cell.
Check conductance of each cell and record Siemens reading.
Ensure air fl ows freely through fl ame arrestors and clean as needed.
Check the integrity of rack.
Record fi ndings clearly in log, date originals and copies.
12.3 Corrective Actions
Low electrolyte levels should be corrected by following the procedures given in Section 12.4.
If charger output voltage is not within the recommended voltage range, make adjustments.
Determine the cause of the shift and correct the problem.
Keep cells clean, terminal posts and connectors corrosion-free, and grounds eliminated by
following the procedures in Section 12.1.
When cell temperatures deviate more than 3°C from each other during an inspection,
determine the cause and correct the problem.
When the connection resistance value of any intercell or terminal connection exceeds the
installation base value by more than 20%, then this must be corrected using the procedures
in Section 12.1.3.
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