Velleman DVM990BL - Manual (Page 3)

DVM990BL VELLEMAN 2
1.2.6. Before rotating the range selector to change functions, disconnect the
test leads from the circuit under test.
1.2.7. Never connect the meter leads across a voltage source while the
function switch is in the current, resistance, diode or continuity mode.
Doing so can damage the meter. When doing measurements on TV or
power switching circuits always remember that there may be high
amplitude voltage pulses at test points which can damage the meter.
1.2.9. Never perform resistance measurements on live circuits.
1.2.10. Never perform capacitance measurements unless the capacitor to be
measured has been fully discharged.
1.2.11. If any faults or abnormalities are observed, the meter should not be
used and it needs to be inspected.
1.2.12. Never use the meter unless the back of the casing is in place and
fastened securely.
1.2.13. Do not store or use the meter in areas exposed to direct sunlight, high
temperature, humidity or condensation.
1.3. SYMBOLS
Important safety information, refer to the operating manual.
Dangerous voltage may be present.
Double insulation (Protection Class II)
Earth
1.4. MAINTENANCE
1.4.1. Do not attempt to adjust or repair the meter by removing the back of
the casing while voltage is applied. Only a technician who fully
understands the danger involved should carry out such operations.
1.4.2. Before opening the meter battery cover, always disconnect the test
leads from all sources of electric current.
1.4.3. For continued protection, only replace the fuse with the specified
voltage and current ratings:
F1: F 200mA/250V (quick acting)
F2: F 10A/250V (quick acting)
1.4.4. Do not use abrasives or solvents on the meter, use a damp cloth and
mild detergent only.
1.4.5. Always set the power switch to the OFF position when the meter is not
in use.
1.4.6. If the meter is to be stored for a long period of time, the batteries
should be removed to prevent damage to the unit.