Siemens SITRANS WW300 Manuale di istruzioni per l'uso - Pagina 19
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6.
Support the scale idler with a block of wood or have an assistant hold it. Remove the
shipping screw and slide the load cell off the feeder.
Installing New Dual Beam Load Cell
1.
Slide the new load cell into position and carefully screw in the load cell shipping
screw. Do not overtighten the screw.
2.
Install the two bottom load cell mount bolts. Tighten them by hand. Now re-tighten
the shipping bolt so the load cell is resting against the overload stop.
3.
Install the two top load cell mount bolts. Tighten them by hand.
4.
Start with the bottom load cell mounting bolts and tighten them. Now tighten the
two top load cell mounting bolts to the value provided with the loadcell replacement.
5.
Remove the shipping screw.
6.
Route the load cell cable to the junction box and connect the load cell according to
the supplied interwiring diagram. Repeat for other load cells if necessary.
7.
Perform a load cell balancing procedure as described in the integrator instruction
manual.
Removing Old
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.
Free the load cell cable from the feeder so it is hanging free from the load cell.
3.
Support the scale idler and remove the two front 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.
4.
Remove the two bottom load cell mount bolts.
5.
Support the scale deck with a block of wood or have an assistant hold it and slide
the load cell off the feeder.
bottom load cell mount
7ML19985MQ01
SITRANS WW300 - OPERATING INSTRUCTIONS
Load Cell
Triple Beam
load cell
Page 15