How the schroth asm-autocontrol retractor works – Schroth Racing AutoControl III User Manual

Page 4

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• SCHROTH asm harnessbelts are designed to be installed

in addition to the stock restraint systems. Always heed
Country/State laws governing the wearing of seat belts.

Be sure that the tail strap of the harness belt is not inter-

fered with or misdirected by cargo or by folding rear seat.

This SCHROTH asm harnessbelt is only suitable for adults on
front outboard seating positions.

SCHROTH asm harnessbelts are not intended or suited for
use by children under 12 years of age, or persons who weigh
less than 88 lbs (40 kg) or those who are less than 4'11" tall
(1,50 meters), regardless of age. Such persons will not be
adequately protected by the harness system and may receive
more severe injury than would otherwise be expected.

SCHROTH U.S. model harnessbelts have been tested in
accordance with performance parameters of Federal Motor
Vehicle Safety Standard

209 with the exception of

Paragraph S 4.6 (full scale impact testing as described in
FMVSS 208). FMVSS 209 deals with lap and three point
restraints and does not expressly refer to harness belts.
SCHROTH has nevertheless applied the performance criteria
specified in FMVSS 209 to the system to the extent applicable.

These belts, when properly installed and used according to
applicable instructions can mitigate injury. The ability of any
restraint system to mitigate or prevent injury is directly related
to the type and severity of the accident. SCHROTH asm
harnessbelts have been tested in dynamic sled tests utilizing a
75 kg (165 lbs) Hybrid II anthropometric dummy to simulate
head-on collisions at 50 km/h (31 mph). They also have been
dynamically tested utilizing a 75

kg mass dummy in

accordance with European Safety Standard ECE-R 16.04.

• Always keep this manual in the vehicle so that others can

thoroughly familiarize themselves with the proper use of
the system.


How the SCHROTH asm-autocontrol retractor works


The SCHROTH

asm-autocontrol is the first harness belt

system for street use to offer the comfort, convenience and
safety of an automatic retractor. The SCHROTH

asm-

autocontrol gives you greater freedom of movement to reach
vehicle controls while providing the benefits of a harness
system. The heart of the SCHROTH asm-autocontrol
harnessbelt is an electro-magnetically operated emergency
locking retractor.

The retractor is both, webbing and vehicle sensitive. It will lock
when belt webbing is unreeled too fast. It will also lock when
forces act on the vehicle from any direction during an accident
or during extreme driving maneuvers such as heavy braking or
during sharp cornering. The retractor will also lock if the
vehicle is tilted more than 25 degrees.

A sensor controls the electro-magnetic operation of the
retractor. In order to work properly and react to forces coming
from different directions, the sensor must be installed vertically.
If the sensor is not installed vertically, the retractor will be more
sensitive to forces applied to the vehicle from one direction
than from another and the system will not work properly.
The retractor will unlock allowing webbing to be unreeled and
you to move as soon as current flows to the electric-magnetic
system in the retractor from your car’s 12-volt electrical
system. Electrical current flows whenever the ignition is
switched on.

When forces act on the vehicle that trigger the sensor, the flow
of current to the electro-magnetic system of the retractor is
interrupted and the retractor locks. Webbing can no longer be
let out, but the retractor is still able to take up slack in the
webbing.

For your safety, the system was designed to lock up whenever
the flow of current to the retractor is interrupted. For that
reason the retractor is locked when the ignition is turned off.

The correct sequence for buckling the SCHROTH asm-
autocontrol harnessbelt is always:

1. after making sure that the transmission is in Park or Neutral

with the hand brake firmly engaged,

2. switch ignition on, but do not start engine,

3. buckle

up,

4. only then, start the engine.

By following this procedure you will be able to prevent your car
from moving when you do not want it to while you are putting
on the harness belt.

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