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Commissioning
7.9 Load cell replacement
7.8
Quick startup overview
1. Verify that the weighfeeder is installed properly as described in Installing (Page 11). Verify
that the belt is tracking and the shear gate (if used) is properly set.
2. Verify that the weighfeeder, integrator/controller, and variable speed drive (AC or DC, if
present) are all properly wired.
3. Refer to the supplied integrator/controller information for calibration and configuration
information.
7.9
Load cell replacement
ALWAYS STOP the belt, lock-out, and/or place a "Do Not Energize" tag on the main
disconnect before working on or around the weighfeeder.
If a load cell on the weighfeeder has been damaged and is not functioning, or if you are
changing the capacity, you will need to replace one or all load cells.
Note
Please read and understand all of the instructions before proceeding with the replacement.
Contact your Siemens representative for assistance if you have any questions or problems.
7.9.1
Removing old load cell
1. Confirm the new replacement load cell is correct and functional. Using a digital volt meter or
ohm meter, verify that the resistance of the new load cell matches the resistance printed on
the specification sheet that comes with the load cell. If the resistances do not match, the load
cell may be damaged. Consult your Siemens representative.
2. Disconnect the load cell being replaced from the junction box. Verify that the load cell is
connected according to the interwiring diagram supplied with this manual. Disconnect the
load cell from the load cell junction box. Free the load cell cable from the weighfeeder so it
is hanging free from the load cell.
3. Install the shipping bolt (tagged) through the bottom load cell mount and into the load cell.
Tighten the shipping bolt until the load cell bottoms out on the overload bolt.
4. Remove the belt.
5. Remove the top load cell mounting bolts. For nickel plated cells remove the threaded
bushing from the load cell for the replacement.
6. Remove the weigh deck.
32
WARNING
Operating Instructions, 06/2018, A5E33560618-AC
SITRANS WW100
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