USC LPX Operator's Manual page 65

Alarm - Fault
Atomizer Motor Fault
Pump Motor Fault
Inlet Conveyor Motor Fault
Outlet Conveyor Motor Fault
Pump - Not In Process:
Seed Wheel - Lbs/Min Under
Range
LPX AUTOMATED SEED TREATER
Possible Cause
1. No signal from Atomizer
motor drive (VFD) indicating
that the Atomizer is running.
2. Atomizer motor has been
shutdown while in Auto mode
of operation.
Pump motor has been shutdown
while in Auto mode of operation.
Inlet Conveyor motor auxiliary
contact was not sensed after
being energized to run.
Outlet Conveyor motor auxiliary
contact was not sensed after
being energized to run.
Valve of the liquid displayed
failed to divert to process when
requested.
Actual Lbs/Min is under 95% of
target rate.
Solution
1. Verify that the VFD is
powered up, or check if it is
faulted out.
2. Verify that the Atomizer was
not turned "Off" while the
system was in Auto mode of
operation.
Verify that the Pump was not
turned "Off" while the system was
in Auto mode of operation.
Verify that the motor starter has
power and is turned on.
Verify that the motor starter has
power and is turned on.
Verify valve has diverted, if so
troubleshoot sensor, if not check
air supply and signal to valve.
Make sure the VFD is not maxed
out at the specified target rate.
Check for sluggish or oscillating
Seed Wheel response. Call the
manufacturer.
Page 65