Rice Lake Farm Bars - U Series Universal Weighbars - Manual (Page 14)

10 U Series Farmbars Operator’s Manual
7.0 Load Cell Replacement
Tension (Load Cell
I, III)
Compresion (Load Cell II, IV)
Pin B - Green
Pos. Signal
Pin C - Red
Pos. Signal
Pin D - White
Neg. Signal
II III
I IV
Pin A - Black
Pos. Signal (Gnd)
Primary
Bar
Secondary
Bar
Figure 7-1. System Schematic
If load cell replacement is necessary, follow this procedure. Tie some string or wire around the end of the cable for
the load cell being replaced. This string will be used to feed the new load cell cable through the bar and to the
splicing junction when installing the new cell. Remove the one mounting bolt that holds the cell in place. Remove
the cell and cable with the attached string. Check for physical damage to the cell and cable. If the cable is damaged,
it may be replaced by splicing it together.
Note
Figure 7-1 gives the position for the set screws that hold the bearing collars in place. The set screw
positions are NOT all the same! When replacing a cell, you must place the load cell in with the set screws
having proper orientation. If the cell is installed upside down, the scale will not work properly.