DVM900
V. 02
–
29/01/2020
5
©Velleman nv
There are no user-serviceable parts inside the device.
Refer to an authorized dealer for service and/or spare parts.
This is an installation category CAT IV measuring
instrument.
Refer to
§7 Overvoltage/installation category.
Read this addendum and the manual thoroughly. Familiarise
yourself with the functions of the device before actually using it.
All modifications of the device are forbidden for safety reasons.
Damage caused by user modifications to the device is not
covered by the warranty.
Only use the device for its intended purpose. Using the device in
an unauthorized way will void the warranty. Damage caused by
disregard of certain guidelines in this manual is not covered by
the warranty and the dealer will not accept responsibility for any
ensuing defects or problems.
4.
Maintenance
There are no user-serviceable parts inside the device.
Refer to an authorized dealer for service and/or spare parts.
Before performing any maintenance activities, disconnect the test leads
from the jacks.
For instructions on replacing battery or fuse, refer to
§11 Battery and fuse
replacement
.
Do not apply abrasives or solvents to the meter. Use a damp cloth and mild
detergent for cleaning purposes.
5.
During Use
Risk of electric shock during operation.
Be very careful when
measuring live circuits.
•
If the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment may be impaired.
•
Never exceed the limit value for protection. This limit value is listed
separately in the specifications for each range of measurement.
•
Do not touch unused terminals when the meter is linked to a circuit
which is being tested.
•
Never use the meter with CAT II installations when measuring voltages
that might exceed the safety margin of 600 V above earth ground.
Never use the meter with CAT IV installations when measuring voltages
that might exceed the safety margin of 300 V above earth ground.
•
Set the range selector at its highest position if the intensity of the
charge to be measured is unknown beforehand.
