Instruction manual

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R S
O. Battery Compartment R. Battery Cover
P. Penlight Battery Holders
S. Fastener
a. Battery Leads
The loudspeaker is by far the greatest drain on the batteries.
If HP7 batteries are to be used it is necessary to load these into the penlight
battery holders which are supplied with the detector in the battery
compartment.
First undo the battery cover by turning the fastener with a small coin through 90
0
.
This frees the fastener and releases the cover, which can then be lifted off.
Load the battery holders ensuring that the batteries are inserted the correct
way round with the + and - signs on the batteries corresponding with those
engraved on the battery holders. After inserting the batteries roll them in the
holders to make a good connection.
Connect the battery holders to the battery leads in the battery compartment.
Make sure the connection is firm and well seated, and place the holders in
the battery compartment. Replace the battery cover by locating the two lugs
first, and then pushing the end with the fastener home. It may be necessary
to align the fastener before pushing it home.
Batteries should not be left in the detector if the detector is stored or not used
for long periods, thus avoiding possible leakage and expensive repairs.
Battery Check & Charging
As a guide to battery condition a Battery Check facility is provided. To check
the batteries switch on the detector at the ON/OFF TUNE Switch and
tune the detector by turning this control clockwise, with the RETUNE STATUS
button depressed. Once the detector is set at the central Tune position
release the RETUNE button and then depress the battery check button. If the
needle on the meter swings into the bold red sector the batteries are in good
condition. Should the needle not reach this sector of the meter and retain its
level, the batteries need replacing.
When rechargeable batteries are checked the meter needle will not reach full
scale, but will maintain the same 2/3 scale reading for the life of the charge.
Standard HP7s will discharge gradually, reading full scale when new and at
the lower end of the bold red sector when discharged to 6 volts.
Sometimes faulty batteries will initially give a good battery check, but will
quickly discharge after a half-hour or so of use.
When battery voltage falls below the necessary level symptoms will be: erratic
signal, meter signal latching on full, signal drift etc. Always check and replace
batteries if these symptoms occur.
Rechargeable Battery Charging
It is not necessary to remove the rechargeable packs for recharging. A
recharge socket is provided so that the batteries can be recharged in the
detector.
Normal HP7s cannot of course be recharged.
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