Q'STRAINT SURE-LOK DOUBLE INERTIA OCCUPANT BELT User manual

4-POINT WHEELCHAIR SECUREMENT SYSTEM
Use and Care Manual
THE DOUBLE INERTIA OCCUPANT BELT (3-POINT OCCUPANT RESTRAINT SYSTEM) COMPLIES WITH
ISO 10542-1 AND REGULATION 107, AS APPLICABLE.

© 2014 Q’Straint® and Sure-Lok®. All Rights Reserved.

3
Read All Instructions Prior to Operating
• This manual is a comprehensive step-by-step user instruction guide for the Double Inertia Occupant Belt with a 4-Point
Wheelchair Securement System.
• Make sure to read, understand and follow all these instructions.
• To address any questions relating to ordering parts, operating the Double Inertia Occupant Belt with a 4-Point Wheelchair
Securement System, troubleshooting, maintenance, service or anything else, contact a Q’Straint® authorized dealer.
• All deviations and alterations from these instructions MUST be reported to a Q’Straint® authorized dealer.
TABLE OF CONTENTS
READ ALL INSTRUCTIONS PRIOR TO OPERATING 3
IMPORTANT SAFEGUARDS AND WARNINGS 4
INTRODUCTION 5
COMPLIANCE 5
EQUIPMENT 5
OPERATIONAL SEQUENCE 6
SYSTEM DEFINITIONS 7
OPERATING INSTRUCTIONS 815
EMERGENCY RELEASE 1617
TROUBLESHOOTING 18
MAINTENANCE AND CARE 19
WARRANTY 19

4
IMPORTANT SAFEGUARDS AND WARNINGS
• All equipment and components MUST be installed and serviced by an experienced and trained technician.
• This system MUST only be used with wheelchairs in forward facing applications and cannot be altered or modified in any way.
• The Double Inertia Occupant Belt (3-Point Occupant Restraint System) complies with ISO 10542-1 and Regulation 107, as
applicable.
• Systems are dynamically crash tested at 30mph (48kph), 20g, using a 187 lbs. (85kg) forward facing surrogate wheelchair and
a 168 lbs. (76kg) Anthropomorphic Test Device (ATD). The ATD is restrained by both shoulder and pelvic belt restraints.
• We recommend using the 3-Point Occupant Restraint System with a 4-Point Wheelchair Securement System in
order to provide superior protection for the occupant in case of impact. The 3-Point System MUST be used with an
Upper Anchorage Belt in order to comply with ISO 10542-1. The 2-Point System is NOT ISO 10542-1 compliant and
therefore does NOT provide maximum protection.
• J-Hooks MUST be attached to a solid wheelchair frame (no spokes, wheels or movable components) at an approximate 45
degree angle with floor.
• DO NOT allow webbing to get twisted inside the retractors or come in contact with sharp corners and edges.
• Compliant Shoulder and Pelvic Belt Restraint must go across occupant’s shoulder and pelvis (lap), and not be worn
twisted or held away from the occupant’s body by wheelchair components. We recommend using both a pelvic and
shoulder belt together and not individually since it will compromise the performance of the system.
• Make sure shoulder belt does not rub against the occupant’s neck.
• This system is a complete integrated system, do not alter or modify it in any way and do not interchange or substitute any
components. Any deviation from these recommendations is the responsibility of the installer.
• The Double Inertia Occupant Belt with a 4-Point Wheelchair Securement System and components have been tested in a
configuration similar to the recommendations in this manual.
• The Double Inertia Occupant Belt with a 4-Point Wheelchair Securement System and its components MUST be regularly
inspected, cleaned and maintained—reference the Maintenance and Care section in this manual.
• Regulations and standards in some countries require the installation of a shoulder and pelvic belt to be considered a
compliant wheelchair securement system. The Double Inertia Occupant Belt (shoulder and pelvic belt occupant
restraint) with a 4-Point Wheelchair Securement System make a complete wheelchair securement system.
• The Double Inertia Occupant Belt with a 4-Point Wheelchair Securement System should not be operated by anyone who
does not have full comprehension of how the system works or if the system is not working properly.
• The Double Inertia Occupant Belt with a 4-Point Wheelchair Securement System and all system components
including floor and wall anchorages MUST be replaced after a vehicle collision.
• Broken and worn components MUST be replaced.
• All damages and defects MUST be reported to a Q’Straint® authorized dealer.
• Only use recommended components with this system, unless otherwise stated.
• Installer is responsible for making sure the installed Double Inertia Occupant Belt with a 4-Point Wheelchair Securement
System meets all applicable regulations and standards—and that the system works according to the instructions in the
section of this manual called Operating Instructions.
• Keep loose articles of clothing away from retractors.
SAVE THESE INSTRUCTIONS

5
INTRODUCTION
• The Double Inertia Occupant Belt (3-Point Occupant Restraint System) complies with ISO 10542-1 and Regulation 107, as applicable.
• Systems are dynamically crash tested at 30mph (48kph), 20g, using a 187 lbs. (85kg) forward facing surrogate wheelchair
and a 168 lbs. (76kg) Anthropomorphic Test Device (ATD). The ATD is restrained by both shoulder and pelvic belt restraints.
• We recommend using the 3-Point Occupant Restraint System with a 4-Point Wheelchair Securement System in order
to provide superior protection for the occupant in case of impact. The 3-Point System MUST be used with an Upper
Anchorage Belt in order to comply with ISO 10542-1. The 2-Point System is NOT ISO 10542-1 compliant and therefore does
NOT provide maximum protection.
ENGINEERED TO PERFORM
On the cutting edge of innovation, The Double Inertia Occupant Belt consist of a unique 2-in-1 occupant securement system. Each
component is designed, engineered and tested to work as one cohesive unit. Keeping the passenger’s safety in mind, the Double Inertia
Occupant Belt retractor will lock the occupant securement belts in case of a sudden stop or if the vehicle is on a 15 degree slope—allowing the
passenger to stay seated and in place.
BUILT TO LAST
The system is equipped with precision belt retractors that automatically self-tension and lock to ensure the wheelchair occupant is always
secured. A distinctive internal floating guide keeps debris away from the retractor’s mechanisms and prevents twisting of the belts, thus
providing greater ease in securing wheelchair passengers. The J-Hooks can accommodate virtually any wheelchair, while the high strength
webbing withstands the test of time.
SECURED ON THE ROAD
This Double Inertia Occupant Belt with a 4-Point Wheelchair Securement System allows wheelchair occupants to securely travel in motor
vehicles. The system and retractable belts secure the wheelchair to floor anchorages for transportation. Because safety is our main priority,
this Wheelchair Securement System has been independently crash tested at a world renowned test facility to meet or exceed all applicable
requirements. Q’Straint® remains committed to developing and improving wheelchair and occupant safety standards on all major international
safety committees. Coming up with everyday solutions for transportation applications is what we do best.
EQUIPMENT
1. Buckle Stalk
2. Double Inertia Occupant Belt
(for occupant securement)
3. Upper Anchorage Connector
4. Upper Anchorage Belt
5. Blue Shoulder Belt
6. Black Lap Belt
7. Shoulder Belt Pin Connector
8. J-Hook
9. Webbing
10. Retractor
11. Red Release Lever
To Order the Double Inertia Occupant Belt or the 4-Point
Securement System call a Q’Straint® authorized dealer.
COMPLIANCE
3
4
5
2
1
6
7
8
9
10
11

6
OPERATIONAL SEQUENCE
Reference the Operating Instructions Section in this manual for complete instructions.
The following is a quick guide on how the Double Inertia Occupant Belt with a 4-Point Wheelchair Securement System works.
RECOMMENDED 3POINT
OCCUPANT SECUREMENT SYSTEM
1
2
3

7
SYSTEM DEFINITIONS
*Buckle Stalk
Upper Anchorage Connector
Shoulder Belt Pin Connector
*Double Inertia Occupant Belt
Double Inertia Occupant Belt (3-Point Occupant Securement System)
L-Track Floor Anchorage
Solid Frame MembersRetractor
**
J-Hook
Webbing
Red Release Lever
Retractor Knob
Retractor
Upper Anchorage Belt
Upper Anchorage Connector
Double Inertia Occupant Belt
Buckle Stalk Pin on Lap Belt
Shoulder Belt Pin Connector
Black Lap Belt
Blue Shoulder Belt
45º
30º 40º
60º
32º
20º
27”
(685mm)
34”
(865mm)
13”
(330mm)
15”
(380mm)
6º
11º
Please CONTACT Q’Straint® in the event that the vehicle’s geometry is outside the recommended installation instructions.
REAR VIEW SIDE VIEW FRONT VIEW
48” - 54”
(1220mm - 1370mm)
Wheelchair
Reference Plane
Wheelchair
Reference Plane
Front
Securement Points
Rear
Securement Points

8
OPERATING INSTRUCTIONS
SECURING WHEELCHAIR
A
B
C
1. Center wheelchair facing forward in Securement Zone and
lock wheelchair brakes (or power off electric chair) (A).
2. Attach 4 Retractors into Floor Anchorage points and lock
them in place, with an approximate distance of 1219mm to
1371mm (48”- 54”) between the front and rear retractors (B).
3. (If applicable, press and hold Red Release Levers (A4). Attach
J-Hooks to Solid Wheelchair Frame (C) at an approximate 45
degree angle with floor.
Keep loose articles of clothing away
from retractors.
Securement Zone
Retractor Floor Anchorage
1219mm - 1371mm
J-Hook
Webbing
Solid Wheelchair Frame Red Release Lever
45º
30º 40º
60º
32º
20º
27”
(685mm)
34”
(865mm)
13”
(330mm)
15”
(380mm)
6º
11º
Please CONTACT Q’Straint® in the event that the vehicle’s geometry is outside the recommended installation instructions.
REAR VIEW SIDE VIEW FRONT VIEW
48” - 54”
(1220mm - 1370mm)
Wheelchair
Reference Plane
Wheelchair
Reference Plane
Front
Securement Points
Rear
Securement Points

9
SECURING WHEELCHAIR
4. (If applicable, manually tension webbing with Retractor
Knobs (D).
5. Attach Buckle Stalk into Floor Anchorage behind Retractor
nearest aisle with a gap of 12.7mm to 38.1mm (½”to 1½”)
and lock it in place. Route Buckle Stalk between wheelchair
frame and occupant’s hip (E).
6. Attach the Double Inertia Occupant Belt reel into Floor
Anchorage behind Retractor nearest wall with a gap of
12.7mm to 38.1mm (½” to 1½”) and lock it in place (F).
E
F
D
Retractor Knob
Gap 12.7mm to 38.1mm
Buckle Stalk
Double Inertia Occupant Belt
Gap 12.7mm to 38.1mm

10
SECURING PASSENGER
FIG. 5
ORIGINAL
NEW ILLUSTRATION
NEW VERSIONS, 2COLOR AND FRENCH.
G
H
J
Compliant Shoulder and Pelvic (Lap) Belt Restraint
(G) must go across occupant’s shoulder and pelvis
(hips), and not be worn twisted or held away from the
occupant’s body by wheelchair components. We do
not recommend only using a pelvic belt restraint
because it will compromise the performance of the
system.
7. Route Black Lap Belt between wheelchair frame and
occupant’s hip and insert into buckle stalk (H).
8. Recommended 3-Point System: (If vehicle does not have
an Upper Anchorage Belt proceed to step 11.) Buckle Blue
Shoulder Belt to Buckle on Upper Anchorage Belt (J).
9. Pull Blue Shoulder Belt over occupant’s chest and attach
Shoulder Belt Pin Connector to Pin on Lap Belt (K).
Black Lap Belt
K
Buckle Stalk
Upper Anchorage Belt
Buckle
Blue Shoulder Belt
Shoulder Belt Pin Connector
Pin on Lap Belt

11
SECURING PASSENGER
N
P
Q
L M
10. Adjust Shoulder Belt Height so that belt rest on shoulder
(L). Proceed to step 13.
Make sure Blue Shoulder Belt does not rub against the
occupant’s neck (M).
11. 2-Point System: (Vehicle does not have an Upper
Anchorage Belt therefore Blue Shoulder Belt goes directly
over occupant’s shoulder (N).)
12. Pull Blue Shoulder Belt over occupant’s chest and attach
Shoulder Belt Pin Connector to Pin on Lap Belt (P). Proceed
to step 13.
13. After occupant and wheelchair are secure, they are ready
for transport (Q).
Shoulder Belt Height Adjuster
Blue Shoulder Belt
Upper Anchorage Belt
Blue Shoulder Belt
Shoulder Belt Pin Connector
Pin on Lap Belt

12
RELEASING PASSENGER
R
S
T
U
14. Recommended 3-Point System: (If vehicle does not have
an Upper Anchorage Belt (R) proceed to step 18.)
15. Unhook Shoulder Belt Pin Connector from Pin
on Lap Belt (S).
16. Unbuckle Blue Shoulder Belt from Buckle on Upper
Anchorage Belt (T).
17. Allow the Double Inertia Occupant Belt reel to slowly
retract the Blue Shoulder Belt into stowage (U). Proceed to
step 20.
Upper Anchorage Belt
Pin on Lap Belt
Upper Anchorage Belt
Buckle
Blue Shoulder Belt
Stowage Position
Shoulder Belt Pin Connector

13
Stowage Position
Pin on Lap Belt
Shoulder Belt Pin Connector
RELEASING PASSENGER
V
W
X
18. 2-Point System: Unhook Shoulder Belt Pin Connector
from Pin on Lap Belt (V).
19. Allow the Double Inertia Occupant Belt reel to slowly
retract the Blue Shoulder Belt into stowage (W). Proceed to
step 20.
20. Unbuckle Black Lap Belt from Buckle Stalk and allow the
Double Inertia Occupant Belt reel to slowly retract the
Black Lap Belt into stowage (X).
Black Lap Belt
Buckle Stalk

14
RELEASING WHEELCHAIR
BB
AA
Z
Y
21. Remove Buckle Stalk from Floor Anchorage and place in
storage (Y).
22. Remove Double Inertia Occupant Belt reel from Floor
Anchorage and place in storage (Z).
23. Press (and hold, if applicable) Red Release Levers on
Retractors, detach J-Hooks from wheelchair and slowly
return them to Retractors (AA).
Keep loose articles of clothing away from
retractors.
24. Remove Retractors from Floor Anchorage points and place
in storage (BB).

15
RELEASING WHEELCHAIR
25. Unlock wheelchair brakes (or power on electric chair) (CC).
26. Wheelchair occupant is ready to exit vehicle (DD).
DD
CC

16
EMERGENCY RELEASE
HH
GG
FF
EE
1. Unhook Shoulder Belt Pin Connector from Pin on Lap
Belt. Unbuckle Blue Shoulder Belt from Buckle on Upper
Anchorage Belt. Allow the Double Inertia Occupant Belt reel
to slowly retract the blue shoulder belt into stowage (EE).
2. Unbuckle Black Lap Belt from Buckle Stalk and allow the
Double Inertia Occupant Belt reel to slowly retract the Black
Lap Belt into stowage (FF).
If Occupant Restraint System (Shoulder and Pelvic
Belt) does not release occupant, in an emergency
cut webbings at an angle (GG).
3. Remove Double Inertia Occupant Belt reel and Buckle
Stalk (HH).

17
EMERGENCY RELEASE
KK
JJ
4. Press (and hold, if applicable) the Red Release Lever on
each Retractor to release the webbing, detach J-Hooks from
wheelchair and slowly return webbing to Retractors (JJ).
5. Remove all 4 retractor (KK).
If retractors do not release the webbing, in an
emergency cut the front and rear webbings at an
angle (LL).
LL

18
TROUBLESHOOTING
PROBLEM IMAGE ANSWER
The webbing is twisted inside
the retractor.
Press (and hold, if applicable) Red Release Lever
then pull J-Hook until webbing is straight.
The retractor(s) is (are) not
releasing the webbing.
Press (and hold, if applicable) Red Release Lever to
release webbing from retractor.
It’s an Emergency and the
retractor(s) is (are) not releasing
the webbing.
Press (and hold, if applicable) Red Release Lever
then pull J-Hook—if retractor does not release
webbing, cut the Front and Rear webbings
at an angle.
The retractor(s) is (are)
not working. Call a Q’Straint® authorized dealer.
The webbing is slacking.
Move wheelchair forward and back to remove slack
from webbing and self-tension the retractors, or
manually tension webbing with Retractor Knobs.
It’s an Emergency and the
Double Inertia Occupant Belt reel
is not releasing the webbing(s). Cut the webbing(s) at an angle.
The Double Inertia Occupant
Belts are locked in place.
Pull them slow and steady. The safety feature on
The Double Inertia Occupant Belt retractors will lock
the occupant securement belts in place if they
are pulled fast.

19
MAINTENANCE AND CARE
2 YEAR WARRANTY  ALL SYSTEMS, PRODUCTS & ACCESSORIES
WARRANTY REGISTRATION
In order to take full advantage of Q’Straint’s warranty, register your product online at: www.qstraint.com/registration
PLEASE DO NOT MAIL IN THIS REGISTRATION. Before going online, have your vehicle’s registration handy as well as the equipment’s:
Serial # _________________________ Part # __________________________
Q’STRAINT’S LIMITED WARRANTY: Q’Straint® warrants this product conformance to our manufacturing specifications and to be free from defects in materials
and workmanship. Q’Straint® or its authorized dealer will (at its sole discretion), repair or replace the defective component(s) free of charge. This warranty does
not cover the cost of assembly or disassembly, transportation, labor, or any other incidental costs involved in the removal of a defective part or the installation of
the replacement part.
Q’Straint® or its authorized dealers reserves the right to inspect the product to verify the claimed defect has not been caused by non-Q’Straint® approved
maintenance or by foreign particles or substances. This Warranty does not apply to defects that result from accident, misuse or abuse, intentional damage, fire,
flood, alteration or modification of the product, negligence, exposure, or use of the product in a manner inconsistent with its intended use.
The following items should be inspected and serviced by an experienced and trained technician during the scheduled
maintenance of the Double Inertia Occupant Belt with a 4-Point Wheelchair Securement System.
• Always keep belts clean and off the floor by returning them to the retractor stowage.
• All systems and components MUST be regularly inspected, tightened, cleaned, and maintained.
• Clean webbing periodically with mild soap and water. After cleaning, fully extend belts and position them to prevent water
from entering retractors until completely dry.
• Prevent contamination of the webbing by keeping it away from polishes, oils or other chemicals, particularly battery acid.
• Occasionally, lubricate buckles and fittings without contaminating the webbing.
• Frayed, contaminated or damaged webbing as well as broken or worn components MUST be replaced immediately.
• Systems or components exposed to a vehicle accident, showing signs of missing parts, damage or wear
MUST be replaced.