Mettler Toledo VFS120 Manual De Instrucciones página 27

6 Troubleshooting
6.1 VFS120 Troubleshooting
Item Problem
• The terminal data
does not change
when loading different
1 weights
• The terminal only
shows "underload" or
"overload"
The terminal shows an
2
"overload" warning
The terminal shows an
3
"Err 8" warning
The terminal data is
4
floating
5 Poor repeatability
The weighing results
6 vary at different
angles
Note: please also refer to chapters – IND236 Troubleshooting and Spare Parts.
Reason analysis
The coiled cable is broken
The loadcell cable is broken
The loadcell could be broken
The forks touch the ground
which pushes against the
weighing carriage
The angle exceeds 10 degrees
A connector inside the
junction box is loose
The angular sensor is broken
The junction box is loose
The coiled cable is broken
Moisture has gotten into the
junction box
The scale is still in motion status High
Check if there is something
blocking the area between the
front and back frame
Check if there is something
blocking the area around the
loadcell
Check if the flexure is
damagedor broken
Check if the bolts of flexures are
loose
Check if the limitation bolts are
touching something
The calibration parameters have
been changed
The angular sensor is broken
Relative
Solution
Possibility
High Change the coiled cable
Repair or replace with a new
Medium
loadcell
measure its resistance
Low (please refer to F2.6 TSH
loadcell spec)
Raise the fork-carriage and
check if the
High "overload" warning
disappears from the
terminal
High Adjust the mast's angle
Inspect and tighten the
Medium
connector
Low Replace with a new one
Medium tighten it
Medium Replace the coiled cable
Open the junction box, make
Low sure
it's dry and inspect the seal
Please wait the scale be
stable
High Clean the blocked area
Medium Clean the blocked area
Low Replace it
Low Tighten the bolts
Adjust the clearance between
Medium the limitation bolts and the
item they are touching.
Medium Re-calibrate
Low Replace it
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