Test Plug Threshold Test; Service Center Repair And Verification - Fluke C9970 User Manual

C9970 Voltage Detector
Users Guide

Test Plug Threshold Test

While the self check verifies proper operation of most of the circuits, it does
not verify proper sensitivity of the Voltage Detector. Therefore, a test plug
threshold test should be performed to verify proper sensitivity, check the
Voltage Detector's insulation, or after the Voltage Detector has been
subjected to severe mechanical stress.
This test should be performed at least weekly.
To perform a test plug threshold test, do the following:
Plug the test plug into a standard, 3-wire, 110-120 VAC outlet. The test
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plug provides the proper reference voltage for the threshold test. (The
test plug draws little current and may be left in the outlet.)
Perform a self check (see page 8).
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Touch the Voltage Detector to the screw head test point on the test plug.
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If the Voltage Detector indicates danger (red flashing LED), it passes the
threshold test. If the Voltage Detector does not indicate danger (green
LED is on), it is malfunctioning.
The integrity of the test plug can be verified with an ohmmeter. The
resistance from the test point to either or both of the two prongs
should be 300 K, ±1%. This test should be done each time you
perform a Voltage Detector threshold test. A faulty test plug should
be discarded immediately.
Do not use any Voltage Detector that fails either the self check
or test plug threshold test. Remove the Voltage Detector from
service immediately and contact Fluke Networks as described
on page 1.

Service Center Repair and Verification

Repair and verification of your Voltage Detector are available at any Fluke
Networks authorized service center. See the contact information on page 1.
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Note
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Warning