Isolite E3-MAC Series, Installation & Operation Manual, Page: 36 / 40

11.2 Battery Replacement
E3-MAC Series is a UL approved and listed component with exact battery
requirements. Failure to replace the batteries with the exact same type will VOID the UL
approval. For battery replacement, please call the service number listed in Section 9
Warranty so that the unit performs as it was intended.
To remove the batteries, shut the unit completely down by turning off the System
ON/OFF switch and remove AC power Feed source by turning off the input circuit
breaker. Disconnect the Battery Connector from the PCB before removing the inverter
assembly. Remove the Inverter Assembly by removing the 4 nuts that attach it to the
cabinet. Carefully remove the connectors from the batteries, remove the battery
brackets with a nut driver or socket extension and then lift the batteries out of the
cabinet.
DO NOT TOUCH BATTERIES UNLESS TRAINED OR KNOWLEDGEABLE!
All means must be taken to prevent an inadvertent short circuit - ensure that all lugs
are secure and insulated after removal from the batteries post. If the short circuit
creates a welded lug so that the short circuit remains conducting current, the battery
may explode.
Extreme danger and bodily injury can be caused by primary and secondary effects of
the short circuit. Primary effects could include burns, vision or hearing loss. Secondary
effects could be falling off a ladder or other sustaining injuries.
To install new batteries, see Section 5.0 Battery and DC Connections.
TIP – If the batteries are to be replaced, discharging the batteries by running in the
Inverter Mode can be beneficial. First, it verifies the batteries need replacing if it does
not make 90 minutes of discharge time. Second, it depletes the battery which reduces
the fault current. By running the battery to LVD, the available fault current would be
substantially less and safer if an inadvertent short circuit were to happen during the
removal or transportation process to the recycling facility.
WARNING – Only qualified personnel that are familiar with AC and DC installation
techniques and codes should perform the removal and replacement.
WARNING – Remove all rings, watches, and other jewelry before doing any electrical
service or installation work. Always wear protective clothing and appropriate personal
protective equipment (PPE) that is suitable such as eye protection, etc. when working
with batteries.
WARNING - Batteries contain tremendous energy and can explode if short circuited.
Precautions should be taken to eliminate possible short circuits.
WARNING – Batteries contain lead. Follow all local and state requirements for battery
disposal. Please dispose of properly by recycling.
WARNING – Always use the correct tools with insulated handles and wear the
appropriate personal protective equipment (PPE) required for battery work.
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