18
Operation/Lamp Function Test
Use the following procedure to determine proper operation of the UUT and Lamps of the GF-30AC-T:
1. Connect the UUT to a proper source of supply using the included 18 AWG power supply cord.
2. Disconnect all other leads and turn the UUT on.
3. Verify the blue lamp is lit.
4. Push the Test button and hold.
5. Verify the red lamp is lit and the internal buzzer sounds.
6. Using a test lead, short the ground of the front panel test power receptacle to the return lead
receptacle.
7. Press the Test button briefly.
8. Verify the green lamp is lit and the buzzer is not sounding.
Current Output Test
1.
Plug the Test Power Cord and the Test Return Lead into the front panel.
2.
Connect the Test Return Lead and the ground of the IEC Test Cordset to the back panel calibration
resistor using the alligator clip/wire assembly.
3.
Connect the DMM across the calibration resistor.
4.
Push and hold the Test Button on the front panel. For a 25 amp output, the DMM should read 2.5
volts ac 3%.
NOTE
If these tests confirm proper operation, the tester must be adjusted as shown in Section 2 above before
use.
Calibration Procedure
The Calibration Procedure should be used any time your instrument has been repaired or fails to pass the
performance test. During the calibration procedure, the tester is referred to as the UUT.
NOTE
Allow the instrument to stabilize for approximately five minutes. Perform all calibration adjustments at
an ambient temperature of 23 C 5 C (73 F 9 F).
WARNING
CALIBRATION ADJUSTMENTS ARE PERFORMED ON ENERGIZED CIRCUITS.
EXERCISE CAUTION AT ALL TIMES, AND USE A NON-CONDUCTIVE TOOL FOR ALL
ADJUSTMENTS.
At the start of the calibration procedure, remove the two upper screws on each side of the GF-30AC-T,
and remove the top cover.
Summary of Contents for GF-30AC-T
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