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TROUBLESHOOTING - AT500H MANUAL TREATER Below is a table describing the most frequent problems and solutions with the USC AT500H Treater . For further assistance, contact the USC Service department at (785) 431-7900. Problem Possible Cause Solution Pump will not turn off in AUTO 1.
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PROXIMITY SWITCH ADJUSTMENT GUIDE The proximity switch is mounted in the inlet to the adjustable chamber and will detect when seed is present. The proximity switch no longer detects seed it will automatically shut off the pump when all seed has left the hopper. If the proximity switch is not working properly, this can be caused by wear, dust, or even moisture.
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