Preliminary Check; How To Use The Push-To-Test Button - AEMC 5100 User Manual

Preliminary Check

When the push-to-test button is in the OFF position, the pointer should
be on zero of the voltmeter scale, and on three of the GΩ scale. If it is
not, use the mechanical zero adjust on the front of the instrument.
• Detach the leads from the instrument.
• Press the push-to-test button into the ON position. The pointer should
deflect completely to the far right of the scale. The green neon "Bat."
lamp should light up (Model 5000N) or the red neon light will blink
(Models 5100 and 5110).
MODEL 5000N:
Note: Ensure that the "Bat." light (green) does not go out at any point
during the testing. If the light does not illuminate, stop the test and
change the batteries before continuing.
MODELS 5100 and 5110:
Note: Ensure that the "battery low" light (red) is not illuminated at any
point during the testing. If the light illuminates, stop the test and charge
the battery using the AC supply cord.
Verify that NO VOLTAGE is present on the circuit to be tested.

How to Use the Push-to-Test Button

OFF: Push-to-test button is in the raised position. This is for
measurement of AC or DC voltages (safety check). NOTE: Do not
depress the push-to-test button if voltage is present.
ON: Push-to-test button is depressed and held down for the duration of
the test. This is for insulation resistance tests.
LOCK-ON: Push-to-test button is depressed and turned clockwise 90° to
lock into position. This is for insulation resistance tests of long duration
such as the Time Resistance or Absorption Test.
Megohmmeter Models 5000N/5100/5110
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