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26 | Operations Manual
Maintenance Instructions
ONLY AUTHORIZED PERSONNEL CAN PERFORM MAINTENANCE.
a. Ensure that the battery string circuit breaker is open before performing any maintenance action that
creates the potential for making contact with any battery or exposed conductive components.
b. Perform visual inspection of battery trays, batteries and visible cabling to ensure that all components are
clean and don’t exhibit any indications of heat, breakage, or chaffing of any wire or cable.
c. Annually, withdraw one battery shelf at a time and measure individual battery voltages and intercell
connector resistance.
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If intercell connection resistance is more than 15% higher than the string average, disconnect, clean
and reconnect the cable, retorquing to the proper torque value.
d. There is no need for discharge on an annual basis. The discharge requirement will be on a site by site basis
as directed by the customer.
Note: Before energizing the system, verify that the cabling has been connected and torqued correctly.
Battery Replacement
Refer to our Battery Replacement Method of Procedures document for full details.