Operation Manual

GMC-I Messtechnik GmbH 61
10 Maintenance
10.1 Replacing the Mains Fuse
Attention!
!
Disconnect the device from the measuring circuit at all
poles before opening the fuse compartment!
Disconnect the device from the mains.
Attention!
!
Use only specified, original replacement fuses!
Bypassing or repairing fuses is prohibited!
If fuses with other current ratings, breaking capacities or
blowing characteristics are used, the device may be
damaged!
Ð Open the fuse compartment at the inlet socket with a suitable
tool (e.g. a screwdriver).
Ð Replace the blown fuse with a new fuse with identical specifi-
cations.
Ð Close the fuse compartment.
10.2 Testing of Rechargeable Batteries
Check the batteries for leakage or damage at short regular inter-
vals, and after long periods of storage. If damage or leakage has
occurred, carefully and completely clean the electrolyte from the
instrument with a damp cloth, and replace the batteries with a
new battery pack (accessory no. …..) before placing the instru-
ment back into service.
If the battery test (see chapter 3.7.4 on page 25) indicates that backup
battery voltage or rechargeable battery voltage has dropped below the
minimum allowable value, recharge the battery pack or have the backup
battery replaced by GMC-I Service GmbH.
Note
Prior to lengthy periods of rest (e. g. holiday), we recom-
mend removing the (rechargeable) batteries. This helps to
prevent excessive depletion or leakage of batteries,
which, under unfavourable circumstances, may cause
damage to the instrument.
10.3 Housing and Test Probes
No special maintenance is required. Keep outside surfaces clean
and dry. Use a slightly dampened cloth for cleaning. Avoid the use
of solvents, cleansers and abrasives.
Attention!
!
No condensation may be permitted to occur at the test
instrument, the test cables or the device under test,
because high-voltage may otherwise cause leakage cur-
rent at the surfaces. Insulated components may also
conduct high-voltage in this case.
Measurements may not be performed under moist ambient con-
ditions, where condensation has occurred or in explosive atmo-
spheres.