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It is relatively easy to calibrate the SCR Drive Board and is something that should be checked periodically, particularly before the start of the drying season and also as a preventive measure. There are four settings on the SCR Drive Board: IR - IR compensation.
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SCR board terminals and min./max. adjustment locations. * Terminals L1 and L2 are the input terminals. When the un- load system is turned on there should be 220 Volts AC across these terminals. * Terminals A+ and A- are the output terminals.
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Control panel switch locations. Unload Moisture Control Switch Switch Drying Mode Switch Meter Roll Speed Control Potentiometer Before starting the procedure set the dryer up as follows: 1. All fan and heater switches to off position and load switch to off position. 2.
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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.
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