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Hella Gutmann
• Protect the MT-HV from strong impacts and do not drop it.
• If the MT-HV shows signs of malfunction, immediately contact Hella Gutmann or a Hella Gutmann trading partner.
3.1.3. Safety Precautions for High Voltage/Line Voltage
It is a precondition for performing high-voltage measurements that the user has knowledge of automotive technology
and is therefore aware of the sources of danger and risks in the workshop and on motor vehicles. An additional country-
specific qualification is mandatory.
Very high voltages occur in electrical systems. Due to voltage flashover on damaged components, such as marten dam-
age or touching live components, the risk of electric shock is likely. Voltage flashover can occur e.g. on the primary and
secondary side of the ignition system, the connection to the vehicle, the lighting systems or the wiring harness with plug
connections. Therefore regard the following:
• Only use power supply cables with grounding contact.
• Only use a checked or the attached power cord.
• Always use the original cable set.
• Do not exceed the voltage limits indicated on the connecting cables.
• The voltage values to be measured must be shielded extra or even twice from dangerous line voltage. The voltage
limits printed on the test leads must not be exceeded. Pay attention that the allowed measuring range is not exceeded
when measuring positive and negative voltage at the same time.
• Regularly check cables and adapters for damage.
• Perform any assembly work such as the connection of the MT-HV to the vehicle or the replacement of components
only when ignition is switched off.
• Do not touch live components when the ignition is on.
3.1.4. Safety Precautions – Chemical Burns
In case of improper use electrolyte may escape from the battery and may cause chemical burn of eyes, respiratory system
and skin. Therefore regard the following:
MT-HV
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