10 Summit 3000 Installation Manual
2. With no weight on the scale, zero the indicator.
3. Turn all four potentiometers (Figure 3-1) clockwise to increase the reading until a clicking sound is
heard from each potentiometer. This ensures the maximum signal from each load cell.
4. With all potentiometers at full signal, place the test weight over one corner and record the indicated
weight.
5. Repeat this process for each of the other three corners. The load cell with the lowest corner reading is
used as a reference point and will not be trimmed.
6. Place the test weight over one of the other three corners and use that cell’s potentiometer to adjust the
cell output down to match the reference cell output.
7. Repeat this procedure with the other two high corners.
Adjustments are somewhat interactive, and adjusting the three higher outputs may affect the reference cell
output, especially in smaller scale decks. Rezero the indicator and repeat the test until all corners read within
±0.1% of the test weight used.
3.3 Calibration Procedure
Refer to the indicator manual to determine correct calibration procedures.
It is recommended that the scale be exercised before calibration to be certain that everything is seated.
1. Load the scale to near capacity two or three times.
2. With no load on the scale, place the indicator in its calibration mode and perform a zero calibration.
3. Place test weights on the platform equal to 70% - 100% of the scale’s capacity. If several weights are
used, they should be evenly distributed around the platform.
4. Perform a span calibration.
5. Remove the test weights and check the zero reading.
6. Repeat the calibration process if necessary.
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