operation manual

• If you are working with voltages higher than 25 V AC / 60 V DC,

exercise extreme caution. Touching the electrical conductors at

such voltages poses a risk of life-threatening electric shocks.

• If the device comes into contact with moisture or other conductive-

residue, work must not be carried out under voltage. At and above

voltages of 25 V AC / 60 V DC, the presence of moisture creates

the risk of life-threatening electric shocks. Clean and dry the

device before use. When using the device outdoors, make sure

that the weather conditions are appropriate and/or that suitable

protection measures are taken.

• Before taking any measurements, make sure that both the area to

be tested (e.g. a line), the test device and the accessories used

(e.g. connection cable) are in proper working order. Test the device

by connecting it to known voltage sources (e.g. a 230 V socket in

the case of AC testing or a car battery in the case of DC testing).

The device must no longer be used if one or more of its functions

fail or the battery charge is weak.

• The device must be isolated from all current sources before opening

the cover to change the battery(ies) or fuse(s). Do not switch on

the device with the cover open.

• Observe the safety precautions of local and national authorities

relating to the correct use of the device and any prescribed safety

equipment (e.g. electrician‘s safety gloves).

• If you have to take hold of the measuring spikes, do so by the

grip sections only. Do not touch the measuring contacts whilst

the measurement is being taken.

• Make sure that you always select the correct connections and

rotary switch position with the correct measuring range for the

measurement to be carried out.

• Disconnect the power supply to the electrical circuit before

measuring or checking the diodes, resistance or battery charge.

Make sure that all high-voltage capacitors are discharged.

To check, remove the measuring leads of the device from

the test piece before changing the mode.

• When connecting to a voltage, always connect the black

measuring lead rst before the red lead. Follow the reverse

procedure when disconnecting.

• Only the original measuring leads may be used. Their voltage,

category and ampere rated powers must match those of the

measuring device.