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DRU10002 (REV 004 / JAN 2017)
Problem
Suggested Cause or Action
Excessive
Audible
Noise
If the rotator has a standard lower bearing assembly with
a stainless steel bearing, then this bearing may be
corroded. If corroded, replace the entire lower bearing
assembly.
Internal spindle bearings are worn
–
contact the factory.
Electrical Noise
in Voltammograms
(environmental)
Make sure that working, reference, and counter
electrode cables do not cross or travel near power cords,
video cables, or network lines.
Make sure that the potentiostat and rotator are located
as far as possible from hotplates, ovens, video monitors,
computers, network hubs, wireless devices, or cellular
telephones.
Electrical Noise
in Voltammograms
(grounding issues)
see Section 4.5
Confirm that the earth ground connection on the rotator
is connected to the chassis ground of the potentiostat.
Confirm that all metal objects (such as cell clamps and
ring stands) near the electrochemical cell are connected
to the earth ground connection on the rotator.
Confirm that all grounding connections are made to a
common grounding point to avoid the formation of
“grounding loops”. Note that grounding loops are
sometimes non-obvious, especially when multiple
instruments and computers are connected together.
Summary of Contents for MSR 636A
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