Siemens SITRANS WW300 Manuel d'utilisation - Page 18
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Panel Removal
Using a hex key, turn the panel mounts 90 degrees per the label attached to the panel
around the mount to release, inspect the gasketing to ensure it creates a positive seal
against the body of the enclosure.
Load Cell Replacement
WARNING: 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 SITRANS WW300 has been damaged, is not functioning, or if you are
changing the capacity, you will need to replace one or all load cells.
Please read and understand all of the instructions before proceeding with the
Note:
replacement. Contact your Siemens representative for assistance.
Removing Old Dual Beam 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 feeder so it is hanging free from the load cell.
3.
Install the shipping screw (tagged) through the bottom load cell mount and into the
load cell. Tighten the shipping screw until the load cell bottoms out on the overload
screw.
4.
Support the scale idler and remove the two top load cell mount bolts. Be careful not
to move the idler as it is still attached to the load cell on the other side of the
weighfeeder.
5.
Remove the two bottom load cell mount bolts. The load cell is now held in place only
by the shipping bolt.
Page 14
SITRANS WW300 - OPERATING INSTRUCTIONS
load cell
bottom load cell mount shipping
overload
screw
screw
7ML19985MQ01