VOLTCRAFT VC-750E Operating Instructions Manual page 44

• In schools, educational facilities, hobby and DIY workshops, measuring devices must be operated under
the responsible supervision of qualified personnel.
• Before each measurement, always make sure that the meter is set to the correct measurement mode.
• When using measuring probes without protective caps, measurements between the multimeter and the
earth potential must not exceed the CAT II measurement category.
• Always remove the test probes from the measured object before changing the measurement mode.
• When taking CAT III and CAT IV measurements, the cover caps must be
placed on the probe tips (max. length of exposed contacts = 4 mm) to
avoid accidental short circuits. These are supplied with the device.
• The voltage between the multimeter connection points and earth must
never exceed 600 V DC/AC in CAT IV.
• Exercise particular caution when dealing with voltages exceeding 33 V/AC or 70 V/DC. Touching
electrical conductors at these voltages may result in a fatal electric shock.
• To prevent an electric shock, do not touch the measuring points when taking measurements, either
directly or indirectly. When taking measurements, do not grip beyond the grip markings on the multimeter
and test probes.
• Check the measuring device and test leads for signs of damage before each measurement. Never take
measurements if the protective insulation is damaged (torn, missing, etc.). The measuring cables come
with a wear indicator. If a cable is damaged, a second layer of insulation will become visible (the second
layer of insulation is a different colour). If this happens, discontinue use and replace the measurement
accessory.
• Do not use the multimeter before, during or after a storm (risk of electric shock / power surge). Ensure
that your hands, shoes, clothes, the floor, circuit and circuit components are dry
• Avoid using the device in the immediate vicinity of:
- Strong magnetic or electromagnetic fields
- Transmitting antennas or HF generators.
- These may distort the measurements.
• If you have reason to assume that safe operation is no longer possible, disconnect the device immediately
and prevent it from being used unintentionally. Safe operation can no longer be guaranteed if:
- There are signs of damage
- The device does not function properly
- The device was stored under unfavourable conditions for a long period of time
- The device was subjected to rough handling during transport
• Do not switch the device on immediately after it has been brought from a cold room into a warm one. The
condensation generated may destroy the product. Leave the device switched off and allow it to reach
room temperature.
• Do not leave packaging material unattended, as it may become dangerous playing material for children.
• Observe the safety information in the individual chapters.
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