Fairbanks Trident Precast Concrete Deck Truck Scale - Manual (Page 33)

Section 6: Parts
04/11 33 51255 Rev. 2
Replacing an RC load cell
1. Remove power from the instrument.
2. Lift the scale using a proper sized and rated hydraulic jack (or jacks) at the
corners closest to the defective load cell location
* * W A R NING * *
Place hydraulic jacks ONLY at the CORNERS of the modules.
Hydraulic jacks must be placed on opposite sides to lift the module in a level
position. Lifting mid-span or between load cells will cause cracks in the concrete!
3. Check upper and lower receiving cups and “O” rings for damage. Replace as
necessary and reapply grease.
4. Insert the new cell into the upper receiving cup and position the anti-rotation pin.
5. Carefully lower the hydraulic jack(s) until the cell is set into the lower cup.
6. Remove the cover of the SSC/J-box, then loosen the gland bushing to free the
cable. Remove the old cell wires and connect new cell wires in the balance
box/SSC. Secure the cover.
7. Test and adjust the scale as necessary.
General load cell information
Load cell part number: 70510
Description: 5½” – 2mV/V, 66k or 30t, 1000 Ω
Do
NOT
lift panels with a fork lift!