Grain Systems PNEG-1181 - Manual (Page 70)

70 PNEG-1181 Portable Dryer Troubleshooting
12. SCR Board Setup
Setting SCR Board Maximum Voltage
1. At the METER ROLL SETTINGS screen on the display set the High to 1000 and the Low to 50.
(NOTE: Pressing the meter roll speed control knob toggles between High and Low settings, and
turning the knob will adjust the settings.)
2. Switch the Moisture Control Switch to the OFF position. This will put the meter roll rotation speed
at the high setting.
3. Use a voltmeter set at the 200 volt DC range and probe terminal A+ with the red voltmeter probe
and A- with the black voltmeter probe. If the voltmeter reads 180 VDC, no maximum adjustment is
needed. If the voltmeter does not read 180 VDC, then use a small screw driver and adjust the max
set potentiometer until the voltage is 180 VDC.
Figure 12C
A- Black meter probe A+ Red meter probe
MAX