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Troubleshooting
Mechanical Troubleshooting
Review mechanical installation procedures and perform a thorough visual inspection to
be sure the operating error is caused by a mechanical problem. Then review and check
the common problems listed below.
If you have difficulty determining the cause of the problem, contact your
Note:
Siemens representative. Be sure to have the Model Number and Serial Number of
your system and all of the calibration and setup parameters available before calling.
Zero Drift, Non-Repeatability, or Non-Linearity
Check for these following conditions:
• weigh deck alignment. Verify weigh deck alignment is accurate. Improper
alignment is the most common mechanical problem affecting scale accuracy.
Contact your Siemens representative for assistance
[should be +1/32" (+0.8 mm) - 0" (0 mm) aligned with slider beds retreat and
approach].
• material buildup on weigh section, pulleys, or between the weigh deck and feeder
frame.
• belt mis-tracking.
• belt too tight.
• load cell bolts loose.
• speed sensor pulley slippage.
• load cell shipping screw (tagged) never removed.
• head or tail pulley too high or low, relative to slider bed alignment. The head and
tail pulleys should be at least 1/8" lower than the approach and retreat slider beds.
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SITRANS WW100 - OPERATING INSTRUCTIONS
7ML19985MN01
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