AEC 1-Pump 1-Station Controller - Manual (Page 23)

1 –Pump 1-Station Controller Chapter 6: Troubleshooting 22 of 30
Vacuum time is too short. Lengthen vacuum time.
Material supply is too low. Refill material supply.
Material probe is not positioned
correctly in material supply. Adjust the material probe at the
pickup point.
Material probe is not adjusted to
the characteristics of the
material. Adjust the material probe to
compensate for flow
characteristics.
Obstructions in the supply line. Clear all obstructions in the line.
The material receiver does
not completely fill.
The filter is dirty. Clean or replace the filter.
A terminal connection is loose. Secure terminal connections on
the terminal board. The POWER light does
not illuminate.
The light is burned out. Replace the light (1LT).
The disconnect switch on the
unit or in the power drop is
open. Close the switch.
The fuse(s) in the power drop
disconnect switch is (are) open. Replace the fuse(s).
The power light doesn’t
light when the ON/OFF
switch is in the ON
position and the
unit won’t run.
Fuse(s) 1FU has/have opened. Replace the fuse(s).
Hopper over-fills
repeatedly. Vacuum time is too long. Decrease vacuum time.
Material line obstruction. Clear the material line.
Material probe obstruction. Reposition or clear the probe.
Railcar air intake is blocked. Clean or clear the filter.
Vacuum switch failed. Replace the vacuum switch.
High vacuum condition.
Wiring fault in the vacuum
switch. Check connections.
Machine bin is filled with an
adequate material supply. Normal operation. The unit
resumes operation when the bin
level drops.
The motor overload (10L) has
tripped and taken the motor off
line. Reset the overload and check
the motor for the proper amp
draw as listed on the nameplate.
POWER light on, but
pump/ blower motor
doesn’t run.
The motor starter (10L) has
failed. Repair or replace the motor
starter as needed.
Pressure present at the
vacuum unit. Improper blower rotation. Switch any two wires at the
incoming power mains on the
disconnect.
A material line is plugged.
Filter chamber needs cleaning.
Unit shifts into blowback
cycle repeatedly. Vacuum switch (1VS) detects
a high vacuum condition.
Switch may be mis-wired
(initial startup).
Problem Possible cause Solution