Rice Lake Static Weighing - Manual (Page 10)

6 CW-90/90X Checkweigher
2.0 Installation
This section contains instructions on unpacking and assembly, leveling, making power connections, load cell
wiring, wiring standard serial port, optional network communications, wiring optional digital outputs, optional
backup battery operation, board diagrams, and power-up sequence.
1
6
9 4 2
5
7
10
Torque
Pattern
8 3
Torqued screws may become less
tight as the gasket is compressed
during torque pattern, therefore a
second torque is required using the
same pattern and torque value.
Important
Important
Do not pick up the scale by the “spider” assembly which supports the platter. Lifting by the spider may
damage the load cell. Lift the scale from under the base to move it. If the rear panel of the indicator is
removed, align the gasket holes carefully to prevent driving a screw through the gasket and causing a
leak. Tighten screws to 15 in/lbs (1.7 N-m) in alternating patterns shown Figure 2-1.
Figure 2-1. Indicator Back Panel Screw Tightening Sequence
2.1 Unpacking and Assembly
The indicator head and support column or stand are shipped detached from the scale platform.
1. Remove all assemblies from the shipping carton. Notice that the head and scale platform are joined by a
load cell cable. This cable is correctly wired to the load cell terminal in the indicator head. Do not pull with
excessive force on the connections at either end of this cable.
2. If mounting the head onto a column, remove the platter from the scale platform and set aside.
3. Invert the platform to access the column mounting holes on the rear and bottom of the platform.
4. Position the column over the four mounting holes. Install (2) 1/4-20 x 3/4” cap screws and (2) lock washers
in mounting holes on bottom side of the platform. Install (2) 1/4-20 x 1-3/4”cap screws, (2) lock washers,
and (2) column supports in mounting holes on rear of platform. Install coupling nuts, counter bored end
first, onto threaded stem of rubber feet. Install feet onto bottom side of the column.
5. Turn the CW-90/CW-90X upright and replace the platter on the platform.
6. Attach indicator to the column with the two knobs and nylon washers provided. Position nylon washers
between indicator enclosure and column mounting holes.
Indicator
Column
Column Support
Lock Washer
Cap Screw 1/4-20NC X 3/4
Foot
Coupling Nut
Cap Screw
1/4-20NC x 1-3/4
Lock Washer
Figure 2-2. Mounting Column to Scale Platform