Rice Lake RoughDeck FXB Flexure Lever Floor Scale - Manual (Page 14)

10 RoughDeck HE AutoLift
4.0 Calibration and Adjustments
The following sections describe how to calibrate the RoughDeck FXB.
4.1 Calibration
Use the following steps to calibrate the RoughDeck FXB.
1. Zero balance the digital weight indicator. Refer to your manufacture’s operating manual for instructions.
2. Place test weights equal to 70 - 80% of the scale’s capacity on the weigh platform and adjust the weight
indicator span for the correct reading.
3. Remove the test weights and check zero.
4. Repeat steps 1-3 if the weight indicator does not return to zero.
4.2 Mechanical Adjustments
The corners of the scale base are preset. If the corners have extreme differences, check for bent flexures, broken
welds, or foreign objects in the corners.
1. Apply test weights equal to 25% of the scale’s capacity to each corner in sequence and observe the
indicator. Record these weights for reference.
2. If the corner shift reading is within tolerance, do not make any mechanical adjustments. If it is not within
tolerance, proceed to step 3.
3. Remove the deck plate and weigh platform frame.
4. Loosen all check link mounting bolts (see Figure 1-1 on page 2 ).
5. Loosen the top and bottom load flexure gripper plate bolts on the corner to be changed (see Figure 1-1).
You do not have to completely remove the bolts.
6. Use Figure 1-2 on page 4 and the exercise below as a guide and perform one of the following:
Add shims to increase the fulcrum to the load distance which increases weight readings for the corner
being adjusted.
Remove shims to decrease the fulcrum to the load distance which decrease weight readings for the corner
being adjusted.
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MCT

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MPBE
BSN
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MPBE
PO
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For example, if:
Load error = 3 lbs
Load arm distance = 4"
Load on platform = 1000 lbs
Then your shim would be.012.



MCT

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