Cleaning And Maintenance - Velleman DVM630 User Manual

Description
Open circuits: wires 2 and 5 are
broken; indicators 2 and 5 do not
light up on master and remote.
Short-circuit between wires 2
and 4: all indicators on DMM light
up in sequence, indicators 2 and 4
do not light up on remote.
If wires are misconnected or reversed: the indicators on the DMM light up in
sequence; the indicators on the remote don‟t.
4. After testing, remove the cable from DMM and cable test unit and set
the rotary switch in the OFF position.

8. Cleaning and Maintenance

Instructions for Safe Maintenance
Meter calibration, maintenance, repair, and other operations can only be
performed by technicians who fully understand the meter and electrical
shock hazards. Do not attempt to repair or service the meter unless you
are qualified to do so and have the relevant calibration, performance
test and service information.
When performing meter maintenance, only use specified and approved
replacement parts.
Before opening the meter, disconnect all power supplies and make sure
that you have no static electricity to avoid damaging the meter
components.
Be aware that there may be dangerous voltages remaining in some
capacitors in the meter even after powering off.
WARNING: To avoid electrical shock, always disconnect the test
leads before opening the housing. To prevent fire hazards, install
fuses with the exact same specifications. To avoid electrical shock
and/or damage to the instrument, do not get water inside the
housing.
Remark: refer to the warning on the back of the meter.
Do not replace internal parts yourself. Replace damaged or lost
accessories by identical ones with the same specifications. Order
spare accessories, e.g. test leads, from your dealer.
Switch off the meter and remove test leads prior to replacing the
battery or fuses.
V. 01 – 22/04/2013
DVM630
Sequence
DMM: 1
remote: 1
DMM: 1 2 3 4 5 6 7 8
remote: 1
14
2 3 4 5 6 7 8
2 3 4 5 6 7 8
2 3 4 5 6 7 8
©Velleman Inc.