26 GMC-I
Messtechnik
GmbH
6
Maintenance
Attention!
!
Disconnect the instrument completely from the measuring cir-
cuit before opening the battery compartment to replace the
battery!
6.1
Battery
The state of the battery should be checked from time to time. A dis-
charged or deteriorating battery shall not be left in the battery com-
partment. When a check of the battery voltage according to
chapter 4.2 shows that the pointer is beyond the zone for the battery
check then the battery needs to be replaced as described in
chapter 4.2
.
Attention!
!
Install a leak-proof battery only. Use a 9 V flat cell battery
according to IEC 6 F 22. Instead of a zinc-carbon cell an alka-
line-manganese cell or a NiCd storage battery can be used as
well. A NiCd storage battery is particularly recommended for
ambient temperatures below 0 °C.
6.2
Melting Fuse
The instrument is equipped with two fuses.
Attention!
!
Disconnect the instrument completely from the measuring circuit
before opening the bottom part of the housing to replace the fuse!
Upon tripping of the fuse, eliminate the cause of overload
before putting the instrument back to serviceable condition!
Make absolutely sure that only the specified fuse is used, see
chapter 5 „Technical Data“!
Using a fuse with different tripping characteristics, different
nominal current or different switching capacity involves haz-
ards for the operator and for protective diodes, resistances or
other components. The use of mended fuses or short-circuit-
ing of the fuse holder is not permitted.
