
Section 11. Troubleshooting
Problem:
What to Do or Check:
Weight reading will not repeat
Make sure that there is nothing caught in the platform or
scale does not return to
under or around the load cell or spider interfering with
zero when weight is removed.
its movement.
Scale overloads early.
Make sure all four overload stops are properly set. Take
the platter off the platform, invert it and place it back on
the spider. With 1/2 of the scale's capacity in test
weights concentrated over a corner of the platform,
there should be approximately 1/32" of clearance
between the stop and the bottom of the spider. Check
all four corners then recalibrate the scale. If the problem
persists, it is possible that the scale is being
shock-loaded causing the load cell's zero to be shifted.
Review the cautions in section 1.
Scale will not indicate full
Make sure that there is nothing caught in the platform
capacity or go into overload.
under or around the load cell or spider interfering with
its movement. If not, check the overload stops using
the above procedure.
Scale will not come to zero
Make sure that the scale is stable ("MOT"
when the ZERO or TARE
annunciator is off) when either button is pressed. If
button is pressed.
the scale is stable, there may be a problem with the
touch-panel or main board, or the scale may be set to
HB44 mode (1.9% zero bandwidth) and an attempt is
being made to zero more than 1.9% of capacity (4.0%
for Canadian mode). If TARE does not operate,
verify that the Tare parameter is set to "P.t.t.".
Weight readings don't seem
Check the scale's accuracy with a test weight. Re-
to be correct.
calibrate if necessary.
Scale drifts off of zero.
Check for air currents and/or vibration around the scale.
If that is the cause it may be necessary to set the AZT
aperture to a wider setting to compensate (see Section
6).
Scale reading is bouncing
Check for air currents and/or vibration around the
or "flighty".
scale. If that is the cause it may be necessary to set
the Digital Averaging to a higher setting to stabilize
the reading (see Section 6).
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