Rice Lake IQ9500, Installation Manual

Page: 12 / 48

Installation 9
2.9 Load Cell Replacement
Load cell replacement requires partial disassembly of
the scale base. Sections 2.9.1 and 2.9.2 describe the
procedure for replacing in single- and dual-platform
scales. On a dual-platform scale, there are two load
cell cables connected to a common power board. Load
cell replacement requires unsoldering and soldering
of load cell connections to the power board.
2.9.1 Single-Platform Load Cell Replacement
NOTE:
Prior to replacing load cell, install load cell
setscrew as detailed in Section 2.1.
1. Remove platform and disconnect AC power
plug from bottom of scale.
2. Remove four platform support machine
screws and remove platform support.
3. Turn scale on side. Remove the four panhead
machine screws for top cover (Figure 2-7).
Set scale on its four legs and remove top
cover.
4. Disconnect DC power supply plug from
power board (Figure 2-11). Remove four
machine screws securing board to chassis.
Figure 2-11. Disconnect DC Power Supply Plug and
Remove the Four Power Supply Board Screws
5. Unsolder the five load cell wires at power
board.
6. Remove four machine screws securing the
platform attach bracket (Figure 2-12) to the
load cell bracket. Remove platform attach
bracket.
Figure 2-12. Remove Platform Attach Bracket
7. Remove two 6 mm x 20 mm socket head load
cell cap screws from load cell bracket
(Figure 2-13). Remove load cell bracket.
Figure 2-13. Remove Load Cell Bracket
8. Remove two 6 mm x 25 mm load cell cap
screws (Figure 2-13). Remove load cell
mount spacers.
9. Insert load cell mount spacers in new load cell
and install load cell in scale chassis using the
two 6 mm x 25 mm cap screws.
10. Insert the load cell bracket using the 6 mm x
20 mm cap screws previously removed.
11. Install platform attach bracket using four
machine screws.
12. Solder new load cell cable wires to designated
wire solder points (refer to wire color code on
power board).
13. Install power board using the four machine
screws previously removed. Route load cell
cable under power board as shown in
Figure 2-11. Reinstall ground terminal under
one machine screw head.
14. Connect DC inlet power supply.
DC POWER PLUG
POWER SUPPLY
BOARD
PLATFORM ATTACH
BRACKET SCREWS
BRACKET CAP SCREWS
LOAD CELL CAP SCREWS