ON
OFF
Overcurrent protection
switch
Battery connection
cable
Adding BUM300S to the BU3002SW
(1) Loosen the screws and remove the battery connector covers on the rear side of the unit and battery unit.
(2) Connect the battery connection cable to the battery connectors on the rear side of the unit and the battery
unit. Connect the battery connection cable to the additional battery signal connector also.
(3) Turn ON the overcurrent protection switch on the back of the battery unit. Connect the AC input plug of the
unit to a wall outlet. The additional battery lamp on the unit's operation panel turns ON.