Rice Lake RL1900 Series User Manual
Page 6
4
After considering any areas that may cause accuracy problems, follow these
installation steps.
1.
Determine where to position the mount and in which direction it should be
oriented.
2.
Assemble the mount and load cell according to the drawings shown at the
beginning of this section. For load cells using 1/2" mounting bolts, torque to 65
FT-LBS. Torque 3/4" mounting bolts to 295 FT-LBS. Adjust the center loading
bolt on all mounts to give the lowest overall profile height, while leaving at least
a 1/8" gap between the load cell and the upper support loading block.
3.
Lift and block the vessel to the same height as the assembled mounts.
4.
Lift one corner or side of the vessel enough to slide that mount into place.
5.
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’s load hole).
6.
Attach the top plate by bolting. Do not fully tighten because shimming may be
necessary to level.
7.
Repeat steps 4, 5, and 6 for the remaining mounts. The vessel should now be
supported on the mounts alone.
8.
If necessary, move the vessel to its final position. Verify that there is no initial
misalignment between the base plate and top plate by lifting the vessel slightly
at each support point in turn. This will also indicate if the load is evenly
distributed on all mounts. Shim if necessary (this only applies to systems
utilizing more than 3 mounts).
9.
Attach the base plates to the foundation using anchor bolts for concrete or by
bolting or welding to a steel structure. Verify that the base plates are no more
than
±
.5
°
out of level. Shim as necessary.
10. Check that the top plates are no more than
±
.5
°
out of level. Shim if necessary
and fully tighten the bolts.
11. The load distribution can be checked more accurately by connecting each load
cell to the junction box and indicator in turn and measuring the output with a
voltmeter. To verify wiring scheme, check the installation manuals for the
junction box and indicator. Shim if necessary. The variation in load among the
cells should be no more than 20%.