Hioki 3285-20, Instruction Manual, Page: 16 / 85

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Operating Precautions
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CAUTION
Do not store or use the instrument where it could
be exposed to direct sunlight, high temperature or
humidity, or condensation. Under such conditions,
the instrument may be damaged and insulation
may deteriorate so that it no longer meets
specifications.
This instrument is designed for use indoors. It can
be operated at temperatures between 0 and 40
without degrading safety.
Keep the clamp jaws and core slits free from
foreign objects, which could interfere with clamping
action.
For safety reasons, when taking measurements,
only use the Model L9207-10 Test Lead provided
with the instrument.
To avoid damage to the instrument, do not exceed
the maximum input current rating, which depends
on the frequency of the current being measured
(see Fig.3 of 4.1.1) Be careful about the evolution
of heat, when the input frequency is high.
The "
" indicator lights up when the remaining
battery capacity is low. In this case, the
instrument's reliability is not guaranteed. Replace
the battery immediately.
When replacing the battery, make sure that the
metal battery snap fitting is firmly connected. If the
metal fitting is loose, adjust it and recheck the
connection. If it isn't connected securely, the
power may not be turned on, and a power may be
turned off during the use.