Maintenance - Extech Instruments 380260-NIST User Manual

Testing Cables
1. Disconnect the cable under test from the line.
2. Disconnect the opposite end of the cable to avoid errors as a result of
leakage from other equipment.
3. Check each conductor to ground and/or lead sheath by connecting one
meter lead to ground and/or lead sheath and the other meter lead to
each of the conductors in turn.
4. Check insulation resistance between conductors by connecting meter
leads to conductors in pairs. Refer to diagram at right.

Maintenance

Battery Replacement
When the low battery symbol
batteries must be replaced.
1. Turn the meter off and remove the test leads
2. Unsnap the tilt stand from the rear of the meter
3. Remove the four Phillips head screws holding the battery cover
4. Remove the battery compartment cover
5. Replace the batteries observing polarity
6. Affix the rear cover and secure the screws.
7. Reattach the tilt stand
You, as the end user, are legally bound (EU Battery ordinance) to return all used
batteries, disposal in the household garbage is prohibited! You can hand over your
used batteries / accumulators at collection points in your community or wherever batteries
/ accumulators are sold!
Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the
end of its lifecycle
Cleaning
Periodically wipe the case with a dry cloth. Do not use solvents or abrasives to clean this instrument.
appears on the LCD, the six 1.5V 'AA'
6
380260-en-US_V2.7 6/21