BATTERY POWER UNIT OPERATORS HANDBOOK PAGE 2 OF 6
ISSUE 4.0
OCT 1997
INTRODUCTION
BATTERY CHARGING
WARNING, LIMITED
BATTERY LIFE LEFT
BATTERY DISCHARGED,
SWITCH OFF OR RECHARGE
OFF
BATTERY
CHARGE
BATTERY POWER UNIT
The Norbar Battery Power Unit (BPU) is a ruggedly built, dual voltage re-chargable unit containing
nickel cadmium cells that conforms to current EC Directives and Safety standards.
The BPU can power up to two Norbar display instruments, Electronic Transducer System (ETS),
Dedicated Transducer System (DTS) or Torque Wrench Analyser (TWA), or one instrument and one
Norbar DATA PRINTER, allowing portability of the whole measurement system. Housed in an
instrument style case, the BPU can be stacked with display instruments, printers and 5 way switch
units, with the addition of coupling extrusions.
A battery management circuit board is incorporated in the BPU to give an indication via a front panel
Light Emitting Diode (LED) when approximately 30 minuites life is left in the batteries. If the BPU is
used beyond this point it will automatically switch off (indicated by another front panel LED), before
inaccurate readings can be obtained.
The mains inlet socket on the back panel and internal re-charge circuitry enable the BPU to be
recharged via the mains supply.
MAINS PLUG FITTING :- ____________________________________________________________
If a mains plug is not fitted, follow the plug’s own instructions. The following may be useful :
BROWN-LIVE BLUE-NEUTRAL GREEN / YELLOW-EARTH
WARNING! It is important that live, neutral and earth are all connected between the BPU and
the mains supply. If no earth is available (2 wire mains supply) it is recommended
that a separate earth is connected between the case (the bottom right hand fixing
screw in the corner of the back panel is ideal) and a suitable earth.
If the plug has an internal fuse, a 1 amp value is recommended.
CLEANING :-______________________________________________________________________
Do not use abrasives or solvent based cleaners. We recommend a propriety brand of foam based
fabric / vinyl cleaner. Use a soft cloth to avoid scratches.
