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Page 47
LOAD RESISTOR TEST
The alternators are heavy-duty models designed to withstand the rigors of
commercial use. One possible reason for repeated failure is an inoperable load
resistor. To test the load resistor:
1. Unplug the AC power cord from the AC wall outlet.
2. Locate the load resistor mounted to the relay board assembly just under
the staircase.
3. Disconnect one black wire from the resistor (See Drawing Below).
4. Set your multimeter for R x 1 or the lowest available resistance range. If
you have an analog multimeter, touch the two leads together and adjust
the meter for a zero reading.
5. Place one lead on Tab A and one lead on Tab 5 of the relay assembly
circuit board (See Drawing Below). You should get a reading of
approximately 1.0 ohm or less.
6. Replace the load resistor if the reading is out of range and retest the new
load resistor.
7. Reconnect the AC power cord and reinstall the right side cover.
8. If the problem still exists, contact the Customer Service Department at
(800) 331-3578 for further assistance.