2
References marked on
tester or in instruction
manual
G Warning of a potential danger, comply with
instruction manual.
F Caution! Dangerous voltage. Danger of
electrical shock.
Continuous double or reinforced insulation
complies with category II DIN EN 61140.
Equipment for working under live voltage
G
Safety Warnings
G
Before commencing any testing, short the
prods together to check the batteries.
F The TPT420 is designed to offer a high degree
of safety. It conforms to standards DIN VDE
0682-401 and IEC/EN 61243-3. To ensure
that the unit is operated safely, please read
the following instructions before using the
device.
■ Do not use the instrument in a humid
environment.
■ Before testing a live circuit the voltage
tester should be checked by connecting
to a known voltage source (e.g. a suitable
120 / 230 V outlet or a suitable proving unit)
before and after use.
■ Tests for voltage should be made with both
poles.
■ Extreme care must be taken when testing
voltages above 50 V AC / 120 V DC.
■ Ensure the tester is only used within the
stated measurement ranges, in low voltage
installations up to 1000 V AC and 1500 V DC
and in the measuring category it has been
designed for.
■ When testing, ensure hands are behind the
barriers on the main body and remote probe.
Avoid touching the tips.
■ The instrument must be in good working
order and be clean and dry, with no broken
or damage to the leads, probes or case.
■ Do not use the unit with the battery cap
removed and ensure when changing the
batteries no probe is connected to any
circuits.
■ Do not use the instrument if one or more
functions are not working correctly.
■ When testing, the warning triangle “
F“
LED will illuminate, even in the event of the
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