CANNON Instrument Company | Troubleshooting
Troubleshooting
Stability of the compliance value is the most critical aspect. Compliance should be monitored to
ensure that values are within the parameters described above. If values differ significantly,
recalibrate and check for "play" in the Delrin load shaft or asphalt residue on the shaft nose, beam
or beam supports. If the problem is still unresolved, call CANNON for technical assistance.
Troubleshoot Confidence Test
If a satisfactory Confidence Test result is not obtained, select Instrument Setup from the BBR
software Setup menu. Then click on Beam Dimensions and make sure that the proper values for
beam dimensions are entered. The thin beam is approximately 1.19 mm (0.047") thick and 12.7 mm
wide. Use a calibrated caliper/micrometer to measure the dimensions of the beam at the point
where force will be applied. Enter the values for Thin Beam Thickness and Width in the
appropriate fields.
FHP Motors
For routine maintenance and improved bearing life expectancy, add a few drops of non-detergent
‘twenty weight’ oil every 12 months.
Fans should be cleared of dust/other material on a regular basis.
Common Issues
Problem: Shaft does not move freely up and down.
Solution(s): Check the LINE and AIR BEARING pressure on the dials the front panel of the
instrument. Ensure that the recommended pressure settings are being used. (45 to 60 psi for LINE;
25 to 35 psi for the AIR BEARING)
Confirm that the magnet on the Load Frame is not making contact with the guide frame. If it is,
follow this procedure to restore the magnet to its correct position:
1. Loosen the set screw holding the magnet in place.
2. Move the magnet about 2 mm (1/16") away from the Load Frame guide frame.
3. Tighten the magnet set screw securely.
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