Simpson 270 Series - Page 52

SECTION V
OPERATOR SERVICING
5.1 GENERAL
5.1.11 The following paragraphs of this section describe the bat-
tery replacement, fuse replacement, test lead inspection and care
for the 270-5.
5.2 INSPECTION
5.2.1 The user is protected from electrical shock by the insulation
of the 270 and its test leads. Frequently examine them for any in-
sulation damage such as cracks, cuts, chips, burns or deterioration
that expose internal metal parts or reduce the spacing between such
metal parts and hand contact by the operator.
5.2.2 Make certain that the battery compartment cover is se-
curely fastened in place before the Instrument is used.
5.2.3 Do not permit an instrument with a broken glass meter
cover to be used.
5.2.4 Whenever the battery compartment cover is removed for
Зпу reason, check that the proper fuses are being used.
5.2.5 Severe overloads may have damaged the Instruments
circuitry despite the protection afforded by the fuse. When a
fuse is replaced, all ranges should be routinely checked (calibrated)
against the specifications in this manual before the Instrument is
returned to service.
S BATTERY REPLACEMENT:
a.
Two
batteries
are
used
inside
the
case
to
supply
power
for
resistance
measurements.
One
is
a
1.5-volt
D
battery
and
the
other
is
a
9-volt
battery.
When
it
is
no
longer
possible
to
adjust
5-1