CBE 520, Safety, Installation, Operation, Maintenance

Page: 52 / 61

52
Controller Does Not Return to “0.00”
This is typical a mechanical problem with the scale. Check the following areas which can
influence the scale.
o
Check load cell feet to make sure that all 4 feet are firmly touching the floor.
o
Check for bad Load cell – Check ohms of each load cell to see if they are in proper
spec. Check chart on page 56
o
Check Load Cell Connections.
o
Check alignment of load cell so the weight is pushing straight down and not on an
angle. Adjust or align as required.
o
Check to see if any load cells are loose. Adjust and re- tighten as required
o
Check for Binding where the dust collection hookup connects in the Filler head area.
o
Check for possible buildup of material between the filler head and the dust collector
pipe.
o
Check for possible material buildup between the floor and the main frame.
o
Check for influences from airlines that may be too tight pulling on the scale.
o
Check for loose bolts on the load cell: Inspect and tighten as required.
Erratic Weights
o
Erratic material flows from supply bin due to not maintaining a consistent head
pressure of material above the packer causing inconsistent flow
o
Controller dribble weight setting is too close to the final cutoff weight setting.
Increase dribble weight setting.
o
Mechanical dribble setting on slide gate is open too far. Adjust the reed sensor on
slide gate cylinder.
o
Loose Load Cell- Inspect and adjust as needed.
o
Bad Load cell – Check Ohms on each load cell to see if they are in spec. Check
against chart