Replacing BMU Batteries
Procedure
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- Unlock drawers containing the batteries and remove batteries.
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- Insert the new batteries as indicated by the polarity symbols (+ and -) marked.
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- Push the batteries drawer in the compartment.
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- Press the BMU battery check button shortly and activate the menu with F1 followed by F9: Batteries are OK as long as no “battery alarm” occurs and the voltage displayed is > 20V.
Batteries replacement cases for BMU 4.x:
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- The 16 batteries must be changed every six months in case of a normal use (BMU has always been connected to the mains).
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- If the BMU has been disconnected from mains and the batteries have not been removed during that time, you must replace the 16 batteries.
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- “Battery alarm” occurs and the voltage displayed is < 20V (see last step above).