Rice Lake RL2100HE Stainless Steel - Manual (Page 6)

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3. Assemble the mounts by inserting the LOAD PIN into the TOP PLATE. The
RETAINING BOLTS are passed through the RETAINING PLATE and
BUSHINGS and threaded into the TOP PLATE. Insert the LOAD CELL into
this assembly so that the load pin sits in the groove at the center of the cell and
tighten bolts to approximately 50ft.lb. Set the top plate/load cell assemble in
position on the BASEPLATE. Pass the LOAD CELL BOLTS through the
LOAD CELL and thread into the BASEPLATE. Leave loose for now.
4. Lift and block the vessel to the same height as the assembled mounts.
5. Remove the block from one support point and slide that mount into position.
6. If the mount is being fitted under the leg of a vessel, verify that the leg’s center
line passes through the center of the TOP PLATE (through the center of the load
cell).
7. Lower the corner or side of the vessel carefully onto the TOP PLATE. The force
of a vessel weighing several tons can damage a load cell if dropped only a
fraction of an inch.
8. With the TOP PLATE positioned approximately level, mark holes for attaching
the TOP PLATE to the vessel’s mounting surface. Make holes and attach the
TOP PLATE loosely to the vessel with suitable fasteners.
9. Repeat steps 4-8 for the mounting assemblies at the remaining corners or sides.
10. Verify that there is no initial misalignment between the BASE PLATE and
TOP PLATE and that the LOAD PIN is centered in the groove of the LOAD
CELL. Relocate if necessary.
11. Attach the BASE PLATES to the foundation using suitable anchors for
concrete or by bolting or welding to a steel structure or subplate. Verify that the
BASE PLATES are no more than
±
.5
°
out of level. Shim as necessary.
12. Check that the TOP PLATES are no more than
±
.5
°
out or level. Shim if
necessary and fully tighten mounting bolts.
13. If dummy cells were used, replace with the LOAD CELLS.
14. To achieve equal load distribution, final height adjustments can be made with
shims between the TOP PLATE and the weighing vessel. The variation in load
among the cells should be no more than 20%. The load distribution can be
checked accurately by exciting each load cell in turn and measuring the output
with a voltmeter.
15. Tighten the bolts securing the load cell to the BASE PLATE . Torque the LOAD
CELL BOLTS to only 20 foot-pounds. This allows the double-ended load cell
to flex under load.