GMC-I Messtechnik GmbH
9
3
Initial Start-Up
3.1
Battery Test
A battery test should be conducted after inserting the batteries, or
if none of the measuring range LEDs lights up during insulation
resistance measurement. Press and hold the
Bat. TEST
key to this
end. Pointer deflection within the scale for the battery test indi-
cates the condition of the batteries with an average load amount-
ing to a test voltage of 1000 V. The rotary selector switch position
is not taken into consideration. The left-hand scale limit repre-
sents minimum required supply voltage, and the right-hand limit
represent maximum available supply power.
Note
If the pointer is only deflected into the minimum supply
power range, several measurements can still be executed
with test voltages of less than 1000 V, because the bat-
tery test is conducted with a load which amounts to a test
voltage of 1000 V.
The instrument does not function if the batteries have been
depleted excessively, and alarm indication does not work either.
3.2
Installing or Replacing Batteries
New batteries must be inserted for initial start-up, or if only
mini-
mal supply power is indicated
.
Attention!
!
Before opening the battery compartment (see page 5 for
location), disconnect the instrument from the measuring
circuit (mains) at all poles.
Eight 1.5 V size AA batteries in accordance with IEC LR 6 are
required for operation of the insulation measuring instrument. Use
new alkaline manganese batteries only.
Rechargeable NiCd or NiMH batteries may also be used. These
can only be recharged externally. We recommend rechargeable
NiMH batteries.
Always replace batteries in complete sets.
Dispose of batteries in an environmentally sound fashion.
Ð
Loosen both slotted screws for the battery compartment lid
on the back, and remove the lid.
Ð
Remove the battery holder and insert eight 1.5 V size AA bat-
teries with correct polarity in accordance with the symbols.
Attention!
!
Make sure that
all of the batteries are inserted with correct
polarity
. If just one battery is inserted with reversed polar-
ity, it will not be recognized by the instrument and may
result in leakage from the batteries.
Ð
Push the battery holder into the battery compartment such that
the battery holder’s contacts touch the contact springs at the
bottom of the battery compartment (see drawing on page 3).
If the battery holder is not inserted as specified, the instrument
cannot be supplied with power.
Ð
Replace the battery compartment lid and retighten the
screws.
Attention!
!
The instrument may only be placed into service if the
battery compartment lid is securely fastened!
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