USC AT500H Troubleshooting

TROUBLESHOOTING - AT500H AUTO 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
Seed Gate Actuator will not
move.
Seed Gate Actuator will not
return to the closed position
after all seed has emptied
from the box.
Seed Gate Actuator will not move
in AUTO.
Seed Gate Actuator will not close
completely.
Auger overload keeps tripping
Page 1
Possible Cause
1. Adjustable Chamber
mechanism jammed with
debris.
2. One or both of the two
connectors linking the
actuator to the control panel
are not connected.
1. Proximity switch is dirty.
2. Proximity switch is set too
sensitive.
3. The system is running in
HAND mode.
1. Proximity switch is not
staying covered.
2. Proximity switch is not set
sensitive enough.
3. HMI screen not set to AUTO.
1. Debris may be keeping it
from closing completely.
1. Seed flow is too high.
2. Too much liquid being
applied.
Solution
1. Clear all debris and make
sure mechanism moves
freely.
2. Make sure both connectors
are properly engaged.
1. Clean proximity switch.
2. Adjust the pump proximity
switch sensitivity
(see page 4).
3. Change to AUTO mode.
1. Make sure proximity switch is
staying covered with seed.
2. Adjust pump proximity switch
sensitivity by turning the
adjustment screw clockwise.
3. Set HMI screen to AUTO.
1. Open the seed gate, remove
debris and power cycle the
entire system. When the
system is turned back on, the
gate will automatically close
and find it's Home position.
1. Slow down seed flow.
2. Lower the liquid rate.