User Manual

GMC-I Messtechnik GmbH 9
8 Maintenance
Attention!
!
Completely disconnect the instrument from all external electrical
circuits before replacing the batteries or the fuse.
We recommend setting the function selector switch to the 1000 V
position during transport and maintenance, in order to prevent
the tester from being switched on inadvertently.
8.1 Batteries
The condition of the batteries should be checked from time to time. A
dead or deteriorating battery must be removed from the battery compart-
ment. If battery leakage occurs, electrolyte must be completely removed
from the instrument and the batteries must be replaced.
The batteries must also be replaced if the red lamp at the left-hand por-
tion of the scale area lights up during the battery test described in chapter
3.2 on page 4.
Replace batteries as described in chapter 3.1 on page 4. Always replace
batteries as a complete set!
8.2 Replacing the Fuse
The fuse blows if maximum allowable voltage is exceeded when the test
instrument is connected to the measuring circuit.
A replacement fuse is located in the battery compartment.
Attention!
!
Use only specified, original type FF 0.315 A/1000 V fuses!
Bridging the fuse holder or repairing fuses is prohibited!
Instrument components may be damaged if fuses with other
current ratings, other breaking capacities or other blowing
characteristics are used!
The fuse is replaced as follows:
➭ Unscrew the housing base.
➭ Screw the threaded cap out of the fuse holder with the help of a
screwdriver.
➭ Screw the threaded cap back into place along with a new fuse.
➭ Replace the housing base and screw into place.
8.3 Testing for Functionality and Accuracy
Using the tester ISO-Kalibra-
tor 1 (accessories: article
number M662A), you can
quickly and rationally test
measuring instruments for
insulation resistances and
low-ohmic resistances for
their functionality and accu-
racy, and thus ensure their
proper function.
8.4 Housing
No special maintenance is required for the housing. Keep outside
surfaces clean. Use a slightly dampened cloth for cleaning. Avoid the use
of cleansers, abrasives or solvents.
Device Return and Environmentally Compatible Disposal
The instrument is a category 9 product (monitoring and control instru-
ment) in accordance with ElektroG (German Electrical and Electronic
Device Law). This device is not subject to the RoHS directive.
We identify our electrical and electronic devices (as of August
2005) in accordance with WEEE 2002/96/EG and ElektroG with
the symbol shown to the right per DIN EN 50419 .
These devices may not be disposed with the trash. Please con-
tact our service department regarding the return of old devices (address
see chapter 9 on page 10).