Grain Systems PNEG-1181 - Manual (Page 71)

12. SCR Board Setup
PNEG-1181 Portable Dryer Troubleshooting 71
Setting SCR Board Minimum Voltage
1. Switch the Moisture Control Switch back to the ON position. This will put the meter roll rotation
speed at the low setting.
2. Use a voltmeter set at the 20 VDC range and probe terminal A+ with the red voltmeter probe and
A- with the black voltmeter probe. Use a small screw driver and adjust the minimum setting for the
potentiometer until the voltage is 9 VDC.
The SCR board is now set and the dryer is ready for normal operation at desired settings.
Figure 12D
A+ Red meter probe
A- Black meter probe
MIN