33
17.2
Blown fuse indicator
Figure 21 shows the blown fuse indicator which operates on continuity [
] range. The
symbol will operate if the fuse has blown after contact with a live supply has occurred. A
blown internal fuse will be shown by the symbol flashing until the instrument is switched off.
Figure 21
Fuse replacement procedure (user replaceable)
The fuse is located behind the rear cover (see Figure 3). The rear cover
must not
be opened
if test leads are connected.
Follow the same procedure as for battery replacement.
A replacement fuse m
must be of the correct type and rating:
i.e. 500 mA (FF) H.B.C.50 kA min 1000
V (32mm x 6mm)
18. Preventive maintenance
The MIT400 series instruments require very little maintenance.
Test leads should be checked before use to ensure there is no damage.
Ensure batteries are removed if the instrument is left unused for an extended period.
When necessary, the instrument can be cleaned with a damp cloth.
The rubber boot can be removed to aid cleaning.
Do not use alcohol, based cleaners as these may leave a residue.
