Benning IT 130 - 7 Maintenance

BENNING IT 130 Maintenance
- 69 -
7 Maintenance
Unauthorized persons are not allowed to open the installation tester. The installation tester does
not contain any replaceable components except for the batteries / storage batteries and the
fuses.
7.1 Fuse replacement
Three fuses are located behind the rear cover of the installation tester:
 F1
M 0.315 A / 250 V, 20×5 mm (757211)
This fuse is intended to protect the internal switching circuits for low-impedance
measurement / continuity test, if during measurement the test probes are accidentally
connected to the mains voltage.
 F2, F3
F 4 A / 500 V, 32×6.3 mm, breaking capacity: 50 kA (757212)
General fuses of testing terminals L/L1 and N/L2
Please refer to chapter 3.3 "Rear panel" for information on the position of the fuses.
Warnings:
 Disconnect all test cables and switch off the installation tester before opening the battery
/ fuse compartment, as dangerous voltages are applied to the installation tester!
 Replace the defective fuse by original fuses only, because otherwise the installation
tester or the accessories might get damaged and / or the operator's safety might be
impaired!
7.2 Cleaning
The housing does not require any specific maintenance. Clean the surface of the installation
tester or the accessories by means of a soft cloth slightly moistened with soap water or alcohol.
After cleaning, let the installation tester or accessories dry completely before using them.
Warnings:
 Do not use any liquids based on benzine or hydrocarbons!
 Do not spill any cleaning liquids on the installation tester!
7.3 Periodic calibration
It is important to calibrate the installation tester regularly to make sure that the technical data
listed in this operating manual are guaranteed. It is recommended to calibrate the installation
tester once a year. Calibration must be carried out by an authorized technician only. Please
contact your specialty retailer or the BENNING Service Center for further information.