3.2.1. Battery Check
To check the state
of
the internal batteries, switch the instrument on and ensure that the
pointer
of
the indicating meter is within the blue section
of
the scale. If not, the internal
batteries should be replaced,
or
if they are rechargeable types, recharged.
Note: To obtain
an
accurate battery check, all external DC supplies must be disconnected.
3.2.2. Replacement and Installation of Internal Batteries
18
In
order
to
install or replace internal batteries
of
either rechargeable
or
alkaline type, proceed
as follows:
1.
Loosen the knurled screw holding the left side panel (looking at the rear
of
the instrument),
and slide the panel
from
the instrument to gain access
to
the battery compartment, as
shown
in
Fig.3.2. The screw will remain captive in the panel.
Fig.
3.2.
Location
of
the
six
cells in the
battery
compartment
of
the Type
2512
2.
Remove the spent batteries and insert new
or
freshly charged batteries, ensuring that they
are correctly orientated as indicated by the arrows on the inside
of
the battery
compart-
ment, Le.that the positive pole on the battery, (the stud on the battery case), points in the
direction
of
the arrows.
Replace the side panel
of
the battery compartment and put a label on
it
stating the type
of
bat-
teries installed. If alkaline
or
conventional batteries have been fitted, this should also include
the warning:
"Explosion risk - Not to be recharged"
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