User Manual

GMC-I Messtechnik GmbH 79
13 Maintenance
13.1 Housing Maintenance
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.
13.2 Testing the Color Display and the Buzzer 
(self-test parameter)
The color display can be tested for failure of individual segments
and loss of color components on page 3/3 of the setup menu in
the SETUP switch position under the self-test parameter.
Beyond this, the buzzer can be tested for 3 different frequencies.
13.3 Software Update (system info parameter)
The current firmware or software version can be queried via the
system info parameter (setup 3/3).
The test instrument’s firmware can be up
dated via the USB port
with the help of a PC. Updating is only possible via the proprietary
“ Firmware Update Tool ” application, which is integrated into the firm-
ware.
➭ Please check before updating the firmware of your test instru-
ment as to whether your PC softwar
e is compatible with the
current firmware version, see table below.
Test 
Instrument
Firmware
vers
ion
PC Report
Gener
ating
Software
File Format of
Data Exports/
Data Imports
Report 
Designer
Sequence
Designer
1.8.1 ETC .etc
✔ ✔
1.8.2 ETC .etc
✔
1.5
1.8.3 ETC .etc
✔
1.5
2.0.0 IZYTRONIQ .etc
✔
IZYTRONIQ
2.1.0 IZYTRONIQ .secu see Section
3.5.3
IZYTRONIQ
Attention!
!
Before updating the firmware, it is imperative that you
save the structures you have created and your measur
-
ing data as they might be deleted in the process, see
section 5.2.3, “Backing Up and Restoring Test Struc-
tures and Measurement Data”.
Note
Adjustment data are not overwritten during updating.
Recalibration is therefore not necessary.
As a registered user (provided that you have registered your test
instrument) you are entitled to a free download of the firmware
update tool as well as the up-to-date firmware version in the
myGMC section of our homepage www.gossenmetrawatt.com.
Operating instructions for the
Firmware Update Tool are also available
there.
Attention!
!
The interface cable may not be disconnected while up-
dating the firmware via the USB port.
Attention!
!
The test instrument may not be disconnected from sup-
ply power while updating the firmware via the USB port.
13.4 Backup Battery for Real-Time Clock
The backup battery (lithium cell) should be replaced no later than
after 8 years. Replacement can only be executed by the service
department.
If backup battery voltage is too low, the date and time assigned to
the
test data no longer correspond to the actual time of recording.
This may also influence sorting in report generating software.
The instrument’s database itself is not affected by a depleted
back
up battery.
13.5 Fuse Replacement
The fuses may only be replaced when the instrument is voltage-
free, i.e. the instrument must be disconnected from mains supply
power and may not be connected to a measuring circuit.
The fuse type must comply with the spec
ifications in the technical
data or the labeling on the instrument.
13.6 Recalibration
The measuring tasks performed with your instrument, and the
stressing it’s subjected to, influence aging of its components and
may result in deviation from the specified levels of accuracy.
In the case of strict measuring accur
acy requirements, as well as
in the event of use at construction sites with frequent stress due
to transport and considerable temperature fluctuation, we recom-
mend a relatively short calibration int
erval of once per year. If your
instrument is used primarily in the laboratory and indoors without
considerable climatic or mechanical stressing, a calibration inter-
val of once every 2 to 3 years is sufficient as a rule.
During recalibration* at an accredit
ed calibration laboratory
(DIN EN ISO/IEC 17025), deviations from traceable standards
demonstr
ated by your measuring instrument are documented.
Ascertained deviations are used to correct display values during
later use of the instrument.
We would be happy to perform DAkkS or fa
ctory calibration for
you at our calibration laboratory. Further information is available at
our website:
www.gossenmetrawatt.com ( Co
mpany  DAkkS Calibration
Center or  FAQs  Questions and Answers Regarding Calibra-
tion).
According to DIN VDE 0701-0702, only test instruments which
ar
e tested and calibrated at regular intervals may be used for test-
ing.
Recalibration of your instrument at regular intervals is essential for
the
fulfillment of requirements according to quality management
systems per DIN EN ISO 9001.
* Examination of the specification, as well as adjustment, are not included
in calibration. However, in the case of our own products, any required
adjustment is performed and adherence to the specification is con-
firmed.
13.7 Technical Safety Inspections
Subject your test instrument to technical safety inspections at
regular intervals. We recommend the same interval for inspections
as is also used for recalibration.
The SECUTEST... is designed as a totally insulated device in
acc
ordance with IEC 61010 and IEC 61557-16/VDE 0413-16.
The
protective conductor is used for measuring purposes only,
and is thus not always accessible. The protective conductor at
the test socket can be tested as follows:
➭ Co
nnect the SECUTEST... to a multiple distributor.
➭ Conduct a
touch current measurement for permanently con-
nected DUTs (nothing may be connect
ed to the test socket).
➭ Measur
e protective conductor resistance between the neigh-
boring socket at the multiple distribut
or and the test socket.
➭ The
measured value may not exceed 0.3 .
For technical reasons, insulation r
esistance between LN and PE
inside the SECUTEST... is roughly 3 M.