Amprobe MEGATEST-5000 Megohmmeter - Manual (Page 27)

5 Maintenance
5.1 Replacing the batteries
CAUTION
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• Before opening the lid of the battery compartment, disconnect the
test leads from the instrument.
• Always make sure the system has finished discharging before
disconnecting the test leads or opening the battery compartment.
When the "low battery” indicator (chap. 4.2, symbol 4) appears on the instrument, replace
the batteries.
Measurements can still be performed with the "low battery” indicator lit, but on very low
resistance, the rated voltage might not be achieved; in this case, the results would no
longer be valid.
- Finish any measurement you may be performing.
- Wait for the output voltage to finish discharging.
- Turn the instrument off.
- Disconnect the test leads.
- Use a screwdriver or coin to remove the 4 screws on the battery compartment door,
located on the bottom of the instrument.
- Use 4 each, 1.5-volt, “D” size alkaline batteries.
- Always use fresh batteries to replace the used ones, and replace all the batteries at
the same time (no partial replacement).
5.2 Cleaning the instrument
Clean the instrument regularly in order to remove any dust or other residue, which could
conduct current or falsify the results of the measurements.
To clean the instrument, use a soft and dry cloth, which can be lightly dipped in alcohol.
Never use damp cloths, solvents, water, etc.
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