Preva Dental X-ray System User Manual, 00-02-1576, Revision ZA1
21
Repeatedly rolling the system over rough surfaces such as thresholds or
rough floors can cause casters to loosen. Inspect them monthly and, if
necessary, follow this procedure to tighten them.
1.
Casters attach to the mobile base, as shown in the left photograph
below. When correctly seated, a caster will be snug against the base
(middle). If the caster begins loosening, threads will be visible
between it and the mobile base (right).
Visual inspection of the casters
If caster threads are visible, stop moving the X-ray system.
2.
Using a 7/16” box end wrench, tighten any loose caster bolts. This is
done by reaching under the arm of the mobile base and positioning
the wrench over the caster bolt. (Bolts will not be visible during this
procedure but this photograph shows a properly positioned wrench.)
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