Specifications

METTLER TOLEDO Weigh Module Systems Handbook
(12/99)9-4
General Procedure
1. Position a weigh module under each of the weigh structure’s support points, and
slowly lower the weigh structure onto the weigh modules. The jam nuts on the hold-
down bolts should be tightened until the top plate is tight against the heads of the
bolts, so that no weight will be placed on the load cell when you lower the weigh
structure.
2. Make sure that each load point on the weigh structure is well supported by the
module’s top plate, and that all top plates are level within ±1/32 inch (0.8 mm).
Otherwise, add shims until each load point is supported and the top plate is level.
3. Bolt or weld the top plate of each weigh module to the support point of the weigh
structure that is resting on it. For bolting the top plates, use two M12 x 1.75 screws
or 3/8-16 UNC bolts and nuts. For welding use a 3/16-inch fillet, 1 inch long on 3-
inch centers.
CAUTION
DO NOT PASS WELDING CURRENT THROUGH THE LOAD CELLS! WHEN WELDING
ON A SCALE, ALWAYS GROUND THE WELDING DEVICE AS CLOSE TO THE WORK AS
POSSIBLE. NEVER WELD CLOSER THAN 4 FEET (1.2 METERS) TO ANY LOAD CELL
WITHOUT REMOVING THE LOAD CELL.
4. Lower the weigh structure onto the support foundation (concrete slab or support
beam). Mark the position of the base plate mounting holes on the foundation (see
Figure 9-3). METTLER TOLEDO can supply templates for the bolt holes.
Figure 9-3: Locating Bolt Holes in Support Steel
5. Raise the weigh structure out of the way and drill the appropriate size anchoring
holes in the support foundation.
6. Anchor the weigh module base plates to the foundation, using the instructions given
below for the appropriate type of foundation. Level each base plate to within +1/16
inch. All base plates must be in the same level plane within +1/8 inch.