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Maintenance(1)
This section provides basic maintenance information
including battery and fuse replacement instruction.
Warning
Do not attempt to repair or service your Meter unless
you are qualified to do so and have the relevant
calibration, performance test, and service information.
To avoid electrical shock or damage to the Meter, do
not get water inside the case.
A. General Service
l Periodically wipe the case with a damp cloth and
mild detergent. Do not use abrasives or solvents.
l To clean the terminals with cotton bar with detergent,
as dirt or moisture in the terminals can affect readings.
l Turn the Meter off when it is not in use and take out
the battery when not using for a long time.
l Do not store the Meter in a place of humidity, high
temperature, explosive, inflammable and strong
magnetic field.
B.Replacing the Fuses (see figure 9)
Screw
Holster
( figure 9)
Model UT90A: OPERATING MANUAL
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