Simpson 260 Series - Fuse Replacement Procedure

Operator Servicing
ZERO OHMS ADJUSTMENT (paraeraph 4.19) replace the
1.5-volt cell. When it is no longer possible to adjust the pointer
to zero on the R X 10,000 range or the relay reset button
does not trip on overload circuit test (paragraph 1.2.10) replace
the 9-volt battery.
b. Recommended replacement batteries are:
1.5-volt D cell, NEDA 13F (Burgess No. 2 Eveready No. 950).
9-volt battery, NEDA 1604A and Mallory MN1604 Duracell,
alkaline battery only.
c. To install or replace a battery, de-energize and disconnect test
leads from the Instrument, then remove the cover to the ex-
ternally accessible battery compartment by loosening the single
captivated screw.
NOTE: Batteries should be replaced before their useful
life has expired. Failure to do so may result in
corrosion and battery leakage.
d. Observe polarity when replacing the 1.5-volt D cell and con-
nect as indicated. The D cell is held in place with spring clips
which also act as battery contact clips. The 9-volt battery con-
tacts and connector are polarized. To remove the 9-volt bat-
tery, first withdraw battery with mated connector from the
compartment. Then remove the connector.
5.4 FUSE REPLACEMENT
5.4.1 The 1 and 2 ampere fuse (also the 1A spare) is located
in the externally accessible battery and fuse compartment. Access
to the compartment is obtained by de-energizing and disconnect-
ing tlie test leads and loosening the single captivated screw on
the compartment cover. To replace or check a fuse: Apply pres-
sure to the 1 amp fuse cup then rotate the plate to expose a
selected fuse for removal from the panel's cavity.