7.1.3 Apparatus and Set-Up—Refer to Fig. 1. Place sample
on a non-skid surface inclined at 10° in the orientation that is
least stable. The sample shall rest on the supporting surface
without anchoring unless the installation instructions for the
machine require that the sample be anchored to the floor. If this
is the case, then anchor the specimen per the manufacturer’s
recommendations. Determine how the user is placed on the
machine to perform the exercise (that is, seated, standing, or
prone) and then determine how the user’s body weight is
distributed onto the user support surfaces. For the simulated
use test, a method of applying a steady state load equal to the
maximum specified users weight or 100 kg (220 lb), whichever
is greater, simulating the user’s weight and its distribution in
the vertical direction at the point(s) of user contact must be
provided. As an example, for a seated user, the user support
surface shall be adjusted to the uppermost position (if adjust-
able) and the center of gravity of the load shall be positioned
approximatly 300 mm (12 in.) above the user support surface.
Possible methods of providing this load include but are not
limited to dead weights.
7.1.4 Calibration—Using an angle measuring instrument
accurate to within 0.1°, verify the non skid surface is 10 6
0.5°. Calibrate the load measurement apparatus to confirm
accuracy to within 620 N (4.5 lb) at the specified load of the
maximum specified user weight or 100 kg (220 lb), whichever
is greater.
7.1.5 Procedure—Test the sample as follows:
7.1.5.1 If the equipment has a storage position that is
different than the use position, place or adjust the machine into
that position. With the tilt surface inclined to 10° verify that the
sample does not tip over.
7.1.5.2 Reposition the sample into the use position. With the
sample machine [no user load applied] positioned on the tilt
surface verify that the sample does not tip over with the tilt
surface inclined to 10°.
7.1.5.3 Using an appropriate load apparatus such as dead
weights, distribute a vertical load equal to the maximum
specified user weight or 100 kg (220 lb), whichever is greater
(65 %), in a non-impact manner to the specimen where the
user contacts the machine during normal operation. [If only a
portion of the user’s body is supported by the machine during
operation, the simulated user weight shall be decreased by the
appropriate amount.] Raise and support any adjustable devices
or other user means to simulate the furthest point in the range
of travel so that its orientation would cause the least stable
condition as encountered during normal operation as shown in
Fig. 1. Verify that the sample does not tip over.
7.1.6 Pass/Fail Criteria—In none of the above test condi-
tions shall the sample tip over.
7.1.7 Precision and Bias—No information is presented
about either the precision or bias of the test for measuring
stability since the test result is non-quantitative.
7.2 Edge Sharpness:
7.2.1 The purpose of this test is to verify that there are no
edges in the accessible area that would constitute a risk of
injury. Where there is uncertainty, a sharp-edge tester as
specified by UL 1439 is to be employed.
7.2.2 Apparatus and Set-Up—The sample shall be set up as
described in 6.1.
7.2.3 Calibration—Calibrate sharp-edge tester per UL 1439.
7.2.4 Procedure—Examine the accessible areas by visual
and tactile means to ensure all parts are burr-free, rounded or
otherwise insufficiently sharp to constitute a risk of injury.
Wherever there may be uncertainty as to the sharpness of an
edge, use the edge tester and conduct the test per UL 1439.
7.2.5 Pass/Fail Criteria—Use the pass fail criteria of UL
1439 to determine if the sample passes this test.
7.2.6 Precision and Bias—No information is presented
about either the precision or bias of the test for evaluating sharp
edges since the test result is non-quantitative.
7.3 Corner Sharpness:
7.3.1 This test is a visual inspection of the sample to ensure
that all corners in the accessible areas are radiused or cham-
fered.
7.3.2 Apparatus and Set-Up—The sample shall be set up as
described in 6.1.
7.3.3 Calibration—No calibration required. Visual inspec-
tion only.
7.3.4 Procedure—Inspect all corners to verify that the cor-
ners have been radiused or chamfered.
7.3.5 Pass/Fail Criteria—All corners in the accessible area
shall be radiused or chamfered.
7.3.6 Precision and Bias—No information is presented
about either the precision or bias of the test for evaluating
corners since the test result is non-quantitative.
7.4 Tube Ends and Non-Functional Holes:
7.4.1 This test is a visual inspection of the unit to ensure that
all tube ends and non-functional holes in the accessible area are
closed off. Holes smaller than 9.5 mm (0.37 in.) are excluded.
Seat or other adjustment holes are exempt from this test.
7.4.2 Apparatus and Set-Up—The sample shall be set up as
described in 6.1.
7.4.3 Calibration—No calibration required. Visual inspec-
tion only.
7.4.4 Procedure—Inspect all tube ends and surfaces in the
accessible area to verify that the ends and non-functional holes
are closed off by other components, caps, plugs, or covers.
7.4.5 Pass/Fail Criteria—All tube ends in the accessible
area shall be closed off or the EN 957-1 test probe shall not be
able to be inserted.
7.4.6 Precision and Bias—No information is presented
about either the precision or bias of the test for evaluating tube
end closure since the test result is non-quantitative.
7.5 Adjustment and Locking Mechanism Function:
7.5.1 This test is a visual and physical inspection of the
adjustment or locking mechanisms, or both, used throughout
the sample. The purpose is to ensure that the design prevents
inadvertent disengagement, and that the adjustment or locking
means do not interfere with the user’s operation of the
machine.
7.5.2 Apparatus and Set-Up—The sample shall be set up as
described in 6.1. Obtain instructions or a descriptive explana-
tion of the function of the adjustment or locking systems used
on the sample from the manufacturer.
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