Rice Lake IQ plus 2100SL Digital Bench Scale - Manual (Page 30)

26 IQ plus 2100 Installation Manual
6.6 Bench Scale Maintenance
This section pro vides instructions for replacing load
cell, adjusting lift-up and o verload protection screws,
and installing the optional clamshell enclosure. See
Section 6.7 on page 28 for additional dra wings and
information about RL2100 replacement parts.
6.6.1 Load Cell Replacement
Use the following procedure to replace the load cell in
RL2100 bench scales:
1. Disconnect power to the indicator.
Before opening the indicator enclosure,
ensure power to the indicator is
disconnected.
2. Disconnect the load cell cable at the indicator.
3. Lift off scale platter. Remove lift-up protection
screws from spider plate and base assembly.
4. Use 7/16" wrench to remo ve upper load cell
screws and lock washers. Remove spider plate
and upper load cell shim from load cell.
5. Turn scale o ver and unscre w overload
protection set screw one full turn.
6. Use 7/16" wrench to remo ve lower load cell
screws and lock w ashers. Remove the lo wer
load cell shim, load cell and cable.
7. Thread replacement load cell cable through
rubber grommet.
8. Position load cell on lo wer shim. Install lower
load cell lockwashers and screws. Torque to 80
in-lb (9.0 N-m).
9. Set scale on its feet. Position upper shim on
load cell, then install spider plate and lift-up
protection screws.
10. Install upper load cell lockwashers and screws.
Torque to 80 in-lb (9.0 N-m).
11. Replace scale platter. Ensure that scale is level.
12. Connect load cell cable to indicator (see
Table 6-1 on page 20).
13. Readjust lift-up protection scre ws and
overload protection set scre w as described
under Section 6.6.2 on page 27.
14. Power-up indicator and recalibrate scale.
Figure 6-9. RL2100 Components (Side View)
Warning
Spider Plate
Platter
Load Cell
Bubble Level
Upper Shim
Lower Shim
Upper Load Cell
Screws
Lower Load Cell
Screws
Corner Overload
Protection Screw
(one in each corner)
Overload Protection Set Screw
Lift-up Protection
Screws