Rice Lake SURVIVOR ATV series, Assembly Instructions Manual

Trimming and Calibration

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3. The lowest reading of the four is the reference 

cell. Do not change that cell’s signal. Instead 
use the individual cell potentiometers for the 
other three cells to reduce those signals to 
match your reference cell. Remember that you 
turned all pots to full signal before starting, so 
you can not increase the signal from any cell 
— only decrease signal by trimming with the 
pots.

4. Note that the best trim is always the least trim. 

If one of the four readings differs from the 
others by more than 5% of the displayed 
counts, there is probably a mechanical 
problem with that load cell mount causing the 
large difference. Find it and correct it before 
going on. Check for binding, an out-of-level 
or misaligned link, or similar problems with 
the load cell and mount. 

Do not

 try to trim 

down large signal differences with resistance 
pots — that only adds larger problems later 
because of interaction between mounts.

5. Park the loaded weight cart over one of the 

high-reading cells on side 1. Turn that cell’s 
individual potentiometer until the displayed 
reading equals your recorded reference cell 
reading. Repeat for the other two high-reading 
cells on side 1.

6. As adjustments are somewhat interactive, 

repeat the process in steps 1 – 5 until all four 
cells on side 1 read within .1% of each other.

7. Repeat steps 1 – 6 for load cells 5 – 8 on side 

2 of the scale.

4.3

Trimming Paired Sections

Now that all individual load cells are trimmed for 
equal output, pairs of load cells on opposite sides of 
the scale must be trimmed for equal sectional output. 
This process is called 

section trimming

.

1. Park the loaded weight cart in the middle of 

the scale and directly over an imaginary line 
connecting an end pair of cells (1 and 8 in 
Figure 4-4). Record the indicator reading.

Figure 4-4.  Trimming Paired Section 1:8

Move the weight cart directly over the next paired cell 
section (2, 7 in Figure 4-5) and record the indicator 
reading. Do the same for the last two paired sections 
(cells 3, 6 and 4, 5)

.

Figure 4-5. Trimming Paired Sections 2:7, 3:6, and 4:5

2. Choose the lowest reading of the four as your 

reference section, which is not adjusted. 
Using the 

section

 potentiometers, reload the 

other three sections in turn and trim the 
sections to match the reading of the reference 
section. Recheck section readings a second 
time as the adjustment made can be somewhat 
interactive.

3. As a final verification of the load cell 

trimming, do a final corner check. Place a 
1000 lb weight on one corner of the platform 
and record the raw-count reading on the 
indicator. Move the weight to all of the other 
corners in turn and record those readings. The 
readings should be within .1% of each other.

4.4

Calibrating with Test Weights

The calibration procedure can only be done after all 
trimming as described above has been completed. A 
qualified scale technician with a test weight truck and 
the expertise to access the scale indicator’s setup or 
calibration mode must perform the calibration 
procedure.

Figure 4-6.  Calibration with Test Weights

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