July 22, 2013
156791
CLS-M2 Forklift Scale
Troubleshooting guide
PN 151718
Symptom
Possible Cause
Action
Scale displaying negative weight
Forks are resting (even slightly) on the floor.
Lift forks up off floor.
Scale reading high against test
weight.
Material, like wood debris, between the scale
and the forklift carriage.
Remove debris.
Material, like wood debris, between the front
and back scale plates.
Remove debris.
Centering pin touching the forklift carriage,
causing it to teeter back and forth.
Adjust scale carriage, centering pin should
not touch on sides and bottom.
Bottom cleats not adjusted properly or loose. Adjust to proper gap using jam nuts, 0.02”
If all these steps do not resolve your issue, check the following,
J-box error
Open j-box and look for obvious damage
Load cell errors
Test mV/v levels, at 1.5 mV per 1,000 lb, test
at 350 ohms
Calibration is required
Calibrate the scale using Revolution
TM
Scale reading low against test
weight.
Zero key has been pressed with a negative
weight reading, while forks are on the floor.
Lift forks off ground, press the Zero key
Material, like wood debris, between the scale
and the forklift carriage.
Remove debris
Material, like wood debris, between the front
and back scale plates.
Remove debris
Centering pin touching the forklift carriage,
causing it to teeter back and forth.
Adjust scale carriage, centering pin should
not touch on sides and bottom.
Bottom cleats not adjusted properly or loose. Adjust to proper gap using jam nuts, 0.02"
If all these steps do not resolve your issue, check the following
J-box error
Open j-box and look for obvious damage.
Load cell errors
Test mV/v levels, at 1.5 mV per 1,000 lb, test
at 350 ohms
Calibration is required
Calibrate the scale using Revolution.
