Chapter 7: Quick-Pit Installation (In-Floor)
(2/01) 7-1
7
Quick-Pit Installation (In-Floor)
The Quick-Pit frame makes it easy to install a standard above-floor VERTEX floor scale in
a pit. You can install the Quick-Pit frame in the floor before you receive the VERTEX scale
assembly. When you receive the scale assembly, simply lower the standard frame into
the Quick-Pit frame and anchor it. Insert the scale platform to complete the installation.
1.
Before constructing a pit, contact METTLER TOLEDO or an authorized METTLER
TOLEDO distributor to obtain the latest pit construction drawing.
2.
Cut a pit in the floor according to the dimensions shown on the pit construction
drawing. The Quick-Pit frame requires an opening that allows a 3" gap around the
perimeter of the frame. The pit depth will vary from 8" (500-5K capacity) to 10"
(10K capacity).
3.
Position the instrument cable conduit as shown in the drawing. Use a high-grade
steel conduit (3/4" EMT thin-wall conduit minimum, supplied by others). Do not
secure the conduit until the frame is in the correct position.
4.
Reverse the shipping brackets on the Quick-Pit frame so they extend outward from
the frame (see Figure 7-1). Remove the VERTEX scale assembly at this time (if
assembly was shipped within the Quick-Pit frame).
5.
Place the frame into the pit, with the shipping brackets resting on the existing floor
(see Figure 7-1).
6.
Center the frame in the pit opening, and make sure the frame is level. If the frame is
not level, shim between the shipping brackets and existing floor as required.
7.
Secure the instrument cable conduit to the frame.
8.
Mask off the four corner plates and the top flange of the frame to prevent concrete
from adhering to these surfaces.
9.
Pour concrete around the perimeter of the frame. Work the concrete until it is level
with the top flange of the frame, and make sure the undersides of all corner base
plates are completely covered. Slope the floor at least 1/2" per foot to a suitable
drain at the center of the pit.
USE A MINIMUM OF 3000 PSI STRENGTH CONCRETE AT 28 DAYS WITH 5 TO
7% AIR ENTRAINMENT
10.
Once the concrete has properly cured, mount the standard VERTEX frame inside the
Quick-Pit frame. Lower the standard frame into the Quick-Pit frame, center it, and
then locate the eight anchor holes in the corners. METTLER TOLEDO supplies eight
1/2-13 UNC x 1.5" long (2" long for 10K capacity) flat head socket cap screws for
securing the frame. The 1/2" anchors are to be supplied by others or can be
purchased from METTLER TOLEDO. Using the frame as a guide, drill anchor holes
to the diameter and depth specified by the supplier. Install the anchors into the
concrete, and then secure the frame using the eight flat head screws provided (see
Figure 7-2).
11.
Install the scale platform and have the scale calibrated by an authorized METTLER
TOLEDO service technician.
Note: The 10K capacity VERTEX scale uses
a 5/8" spacer between the Quick-Pit frame
and the standard frame.
Contact METTLER TOLEDO for latest pit
construction drawings.
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