Testboy TV 431, Manual

Page: 26 / 40

Information
26 Testboy
®
TV 431
Safety
The insulation tester was developed and manufactured in accordance with the requirements of the safety standard for
electronic test instruments. The specifications for category III 1,000 V and pollution degree 2 were maintained entirely.
Warning
Comply with the following instructions to avoid an electric shock or injury.
 Only use the test instrument in accordance with the specifications of these instructions, otherwise it is not possi-
ble to ensure safe operation of the instrument.

Do not use the test instrument or the test leads if they present visible damage or if the device does not function
correctly. If in doubt, send the unit for maintenance.
 Before connecting the test instrument to the circuit to be tested, always ensure that the correct connection,
switch position and measurement range is used.

Check the function of the test instrument by measuring a known voltage .
 Do not apply a voltage between the connections or between the connection and ground which is higher than the
nominal voltage stated on the test instrument.
 Exercise especial caution with voltages of over 30 V AC effective voltage, 42 V AC peak voltage or 60 V
DC voltage, as these voltage values could result in an electric shock.
 Replace the batteries as soon as a low charge status is displayed.

Disconnect the power supply and discharge all high-voltage capacitors before measuring the resistance, continu-
ity or capacity.
 Never use the test instrument in proximity to explosive gases or steams.
 When using the test leads, ensure that you keep your fingers behind the finger protector.
 Remove the test leads from the test instrument before opening the housing or the battery compartment of the
test instrument.

Never commission the device unless the protective cover is in position or if the battery compartment is open.
 Comply with the local and national safety specifications when working in hazardous environments.
 Wear the correct protective equipment as specified in local and national regulations when working in hazardous
environments.

Use only the specified replacement fuses; failure to do so will mean that the protection of the device is not guar-
anteed.