Marker Technical Manual 2021/2022 - 103

14.5 FUNCTION TEST AND SERVICE
FUNCTION TEST OF MARKER RENTAL & DEMO BINDINGS:
IMPORTANT !
The test procedure described below is based on the
existing ISO 13993, and constitutes a summary of these
standards. The original document " International Standard
ISO 13993:2019 " provides the authoritative and binding
protocol to use for the Rental test procedure.
TEST PROCEDURE:
Since it is impractical to perform a full inspection each time a system
is rented, a routine of pre - season and in - season inspections has
been developed to verify release indicator accuracy, confirm correct
equipment function, and assure proper assembly and adjustment
procedures by the rental shop staff.
Fully implemented, the procedures that follow provide rental shop
customers a standard of care equivalent to that provided retail shop
customers under current ISO.
This test procedure is not applicable for alpine touring ski-binding-boot
systems.
This test procedure is not applicable for complete and incomplete
alpine ski-binding-boot systems which are rented for 15 days or more.
PRE - SEASON INSPECTION
Pre - season inspections are performed on components of the release
system: bindings and boots. All rental bindings, new and used, are visually
inspected, and then tested using specially selected reference boots.
Exception: for new system bindings in their original packaging, which are
fitted onto the plate systems pre-assembled by the ski manufacturer,
the random sample is ≥5% from stock but no fewer than 16 and no
more than 80 systems - see table [B]. If stock comprises less than 16
units, 100% inspection is performed.
Bindings that fail go through a trouble - shooting procedure ( 15.4)
to identify and correct the deviation or malfunction. If this procedure
does not correct the problem, the binding is removed from inventory.
All rental boots, new and used, are visually inspected for damage, wear,
contamination, broken or missing parts, or inferior materials at contact
points with the binding. In addition, one boot per " cell " is tested for
boots that are new to the rental inventory. A cell is all boots of the
same make, model, age, and shell size. A random selection of 5 % of
all boots, previously accepted into inventory, is also tested. Tests are
performed with a test device and a pair of specially selected reference
bindings. If a boot fails, all boots from that cell are then tested. Boots
that fail and cannot be repaired are removed from inventory.
IN - SEASON INSPECTION
In - season inspections are performed on complete rental systems to
ensure that the equipment is adjusted appropriately and continues to
function correctly. Typically 5 % of the rental inventory is tested during
each two week sampling period. The random sample is equally divided
between equipment that is available for rental and equipment that has
just been rented. The equipment in the " as rented " category is from
real skiers in the condition in which it is either dispatched or returned,
while the " available for rental " equipment may be set up for fictitious
skiers. Only single skis, not pairs, are tested, and testing at the toe
is only required in one direction. A count is maintained of test results
which exceed allowable limits. The magnitude and frequency of these
deviations determines the frequency of future inspections. Shops which
fail an inspection must sample daily until the source of the problem is
found and corrected. Then, as inspection results improve, the frequency
of sampling and inspection is relaxed.
INSPECTION PROCEDURES
IMPORTANT TERMS
CORRECTION FACTOR - The value that must be added or subtracted
from the initial visual indicator setting to bring the test result within the
Inspection Tolerance (or Inspection Range).
DIRECTIONS OF RELEASE - Unless otherwise specified (see in-season
inspection), the directions of release to be tested are forward lean and
clockwise and counter clockwise in twist.
TEST DEVICE - A device which meets ISO standard 11110 and has
been checked and maintained in the manner specified by the device
manufacturer.
TEST RESULT OR RELEASE TORQUE - The middle quantitative value of
three tests made in the same direction.
PRE - SEASON TEST
Reference boot selection -The reference boot is a boot of a designated
sole length which is otherwise typical of the boot inventory. Use the
procedure below if the boot inventory includes several models and a
representative boot cannot be easily identified.
1. Select five single boots with sole lengths as specified in table [A] for
the binding type to be tested: adult, junior, or child.
2. Clean all five boots with a mild detergent and water.
3. Adjust a rental binding to the release indicator setting specified in
table [A] for the binding type.
4. Fit the binding to the boots and determine the release torque in
all three directions of release (forward lean and both directions in
twist - three releases in each direction).
5. Average the release torque for CW (clockwise) and CCW (counterclockwise)
twist release.
6. Reject and replace any boot with a CW to CCW difference of more
than 6 Nm for adult boots or 4 Nm when testing child boot types
(see table  15.1 - 15.3).
7. Rank the five twist results and select as the reference boot for
twist, the middle boot.
8. Rank the five forward lean results and select as the reference boot
for forward lean, the middle boot.
101
14.5 MARKER RENTAL / DEMO FUNCTION TESTING AND SERVICING
Marker Technical Manual 2021/2022

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