Simpson 260 Series - SECTION V OPERATOR SERVICING; Operator Servicing Overview; Instrument Inspection Procedures; Battery Replacement Guide

SECTION V
OPERATOR SERVICING
5.1 GENERAL
511 The following paragraphs of this section describe the bat-
tery replacement, fuse replacement, removing the Instrument case,
and test lead inspection and procedures and care for the Simpson
260 7P and 7PM.
5.2 INSPECTION
5.2.1 Тһе user is protected from electrical shock by the insula-
tion of the 260-7P and its test leads. Frequently examine them for
any insulation 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
any 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.
5.3 BATTERY REPLACEMENT:
a. Two' batteries are used inside the case to supply power for
resistance measurements. One is a 1.5-volt D cell and the other
is a 9-volt battery. When it is no longer possible to adjust the
pointer to zero for the R х І and R х 100 ranges (refer to
5-1