Holtgreven Doran All Purpose Washdown Scales - Manual (Page 7)

7
Troubleshooting
Scale Messages:
Message Meaning
"rEL Pb" Release push
button. The scale has detected that a key has been depressed for
more than 3 seconds.
"Ldg 0" Loading zero.
The scale is attempting to zero the scale upon startup.
This message will remain until scale is stable.
"CLr Ac" Clear
accum/counter The Accumulator and Counter values are cleared out of
nonvolatile memory.
Common Problems and Solutions
Problem: What to Do or Check:
Weight reading will not
repeat or scale does not
return to zero when weight
is removed. Make sure that there is nothing caught in the platform under
or around the load cell or spider interfering with its
movement.
Scale weighing range is
limited, and will not indicate
full capacity or go into
overload. Make sure that there is nothing caught in the platform under
or around the load cell or spider which would interfere with
their movement.
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 to be
shifted.
Scale will not come to zero
when the ZERO button is
pressed. Make sure that the scale is stable ("MOT" annunciator is
off) when ZERO is pressed. If excessive motion is a
problem, then it may be necessary to activate the latching
zero feature (2Od) or lengthen the filter time (Av C32).
There may be a problem with the touch-panel or main
board.
Weight readings don't seem
to be correct. Make sure that there is nothing caught in the platform under
or around the load cell or spider which would interfere with
their movement.
Check the scale's accuracy with a test weight. Recalibrate 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.