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4.3 Clamping nut on adjustable handle
The clamping nut is captive (cannot be
lost) and is designed to clamp the height-
adjustable handle unit in place. The
clamping nut features a special design
that allows it to be tightened by hand.
It is
not necessary to tighten the nut with
force
. To find out how far the clamping
nut
should
be
tightened,
Sano
recommends rotating the nut clockwise
with the handle positioned low down so
that the operator can attempt to push the
handle downwards using the weight of the
upper body. Keep tightening the nut until
the handle cannot be shifted. Very little
force is applied to the handle while
moving on steps since the stairclimber is
balanced while in operation. The only time
slight pressure is needed is while tilting
the unit during loading and unloading.
Loosening the clamping nut by one turn is
quite sufficient for the handle to slide easily. The clamping range setting is adjusted
using a concealed setting screw
(patented design),
which also acts as a safety
screw and may only be adjusted by an authorized dealer. There is no point in
undoing the nut any further since the clamping range does not change. After
approximately three turns the clamping nut is blocked so that it cannot be lost.
Note 1: If the clamping nut cannot be undone, then it usually is already undone. Please
check whether the handle slides freely up and down, or whether you can see a section of
exposed thread between the nut and the handle.
Note 2: The following general rule applies for setting the height of the handle: The upper
edge of the handle (where the UP/DOWN switches are located) should be at about the same
height as the operator's shoulders (see also start-up section).
