KNIGHT DIVERS GR 13 ULTRALITE User manual

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GR13 - GR13TEK - GR13 ULTRALIGHT
GR15 - GR15TEK - GR19 - GR19TEK
USERS MANUAL
PLEASE READ CAREFULLY
DIVE SAFE.

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CONGRATULATIONS
THANK YOU FOR PURCHASING A KNIGHT DIVERS BCD.
OUR EXCLUSIVE BCDS ARE MADE WITH THE BEST EUROPEAN MATERIALS
THAT ARE SELECTED AND TESTED OFFERING A TOP QUALITY PRODUCT.
THIS BCD IS THE RESULT OF YEARS OF RESEARCH AND DEVELOPMENT
TO GUARANTEE AN ULTIMATE DIVING EXPERIENCE.
ALL OUR BCDS ARE CE CERTIFIED
AND DESIGNED TO MEET THE REQUIREMENTS PROVIDED BY
UNI EN 1809: 2014 + A1: 2016 COVERING STABILIZING JACKETS.
THE DESIGN, DEVELOPMENT, AND PRODUCTION OF BCDS ARE MADE IN MALTA.
ALL THE MATERIALS USED ARE CERTIFIED, NON-TOXIC, AND HYPOALLERGENIC
TO SKIN CONTACT, ALL IN COMPLIENCE WITH THE PROTECTION
OF THE HEALTH OF THE USER, WORKERS, AND THE ENVIRONMENT.
ALL KNIGHT DIVERS PRODUCTS ARE COVERED BY A TWO-YEAR GUARANTEE.
WE HOPE THAT OUR PRODUCT MEETS YOUR EXPECTATIONS,
REGARDLESS OF WHETHER YOU ARE A RECREATIONAL OR EXPERIENCED DIVER.
PLEASE READ CAREFULLY
THE INSTRUCTIONS MANUAL
YOUR SAFETY IS PRICELESS.

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TABLE OF CONTENTS
INTRODUCTION 4
CE CERTIFICATION 5
CONFORMITY ACCORDING TO CE DIRECTIVE 5
DANGER WARNINGS 6
GENERAL WARNINGS 7
LIMITATIONS 8
RISK AWARENESS 9
TECHNICAL SPECIFICATIONS 11
USAGE 13
PRE-DIVE PREPARATIONS 30
MAINTENANCE ROUTINE 34
WARRANTY 34

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INTRODUCTION
Congratulations and thank you for purchasing a KNIGHT DIVERS BCD.
Our BCDs are made exclusively with the best European production materials, which are selected
and tested to offer a product of the highest quality. Development and continuous research allow us
to be constantly evolving.
Our BCDs have been designed to meet the requirements of the UNI EN 1809: 2014 + A1: 2016
standard, in regards to the requirements for buoyancy compensators.
Design and production are carried out entirely in MALTA. All the materials used are certified non-
toxic and hypoallergenic to contact with the skin, all in compliance with the protection of the health
of the user, employees, and the environment. Each BCD is individually tested to prove the pressure
seal, the functionality of the valves, and the connection hose.
It is important to read the recommendations in the following pages very carefully.
KNIGHT DIVERS Ltd is at your disposal for any eventual clarification regarding the use of the BCD.
For any questions, please contact us at:
KNIGHT DIVERS Ltd
62, Triq L-Gholjiet
Mellieha MLH 2105
Malta
Phone [phone]
Web : www.knightdivers.eu
Email: [email protected]

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CE CERTIFICATION
The BCDs described in this manual have undergone a CE examination, which have been verified and
certified by the RINA laboratory, S.p.A. - Via Corsica, 12 - 16128 Genoa - Italy, Notified Body No.
0474 in compliance with the EN 1809: 2014 + A1: 2016 standard as a stabilizing jacket (Class II).
CONFORMITY ACCORDING TO CE DIRECTIVE
The undersigned manufacturer KNIGHT DIVERS Ltd with headquarters in 62, Triq L-Gholjiet,
Mellieha MLH 2105 MALTA declares that the Personal Protective Equipment (PPE) described below:
Floating compensators (balancing jackets) for underwater use models:
GR 13 One size (adjustable from XS to XXL)
GR 13 TEK One size (adjustable from XS to XXL)
GR 15 One size (adjustable from XS to XXL)
GR 15 TEK One size (adjustable from XS to XXL)
GR 19 One size (adjustable from XS to XXL)
GR 19 TEK One size (adjustable from XS to XXL)
GR 19 R One size (adjustable from XS to XXL)
comply with the provisions of Directive 89/686 / CEE (implemented in Italy with Legislative Decree
4/12/92 No. 475 and subsequent amendments and / or additions) and with national regulations that
implement the harmonized standard EN1809: 2014 + A1: 2016;
are identical to the PPE subjected to Certification Certificate No. PPE416917CS/001 and No.
PPE416917CS/002 issued by RINA Services S.p.A. via Corsica 12, 16128 Genoa (Notified body no.
0474).

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DANGER WARNINGS
This manual contains three important symbols to inform you about the risks you may
encounter in the use and maintenance of the BCDs.
The symbols and their associated captions include:
DANGER :
Indicates an imminent hazard which, if not avoided, may result in serious injury
or death.
ATTENTION :
Indicates a potential hazard which, if not avoided, may result in serious injury
or death.
CAUTION :
Indicates a potential hazard which, if not avoided, may result in slight or
moderate injury. May also indicate the unsafe execution of a procedure.

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GENERAL WARNINGS
Before using the BCD or any other product for scuba diving it is necessary to follow
a course held by qualified instructors and obtain the relevant license. The use of
diving equipment by unqualified persons is dangerous and may result in serious
injuries or death to the diver and his companions.
If you are not experienced in the use of this equipment, we recommend that you familiarize yourself
with its operation during shallow depth test diving and in favorable conditions; if necessary, it is
advisable to contact a qualified instructor for a refresher course.
During the assembly and setting of the BCD, all possible precautions have been implemented to
provide an exceptionally reliable product over time. Such measures can be rendered inefficient if
the user does not use the BCD correctly and does not provide adequate maintenance.
KNIGHT DIVERS Ltd declines all responsibility for any problems arising from failure to observe the
recommendations in this manual.
For any problems, you can contact your dealer or contact KNIGHT DIVERS Ltd, directly. To ensure
maximum safety, any repair or maintenance must only be carried out by technical centers
authorized by KNIGHT DIVERS Ltd.
In case it is necessary to perform routine maintenance operations or extraordinary maintenance,
KNIGHT DIVERS Ltd makes available its Technical Service Centre to provide all the assistance and
the original spare parts.
These BCDs have been certified according to the EN 1809 standard, which provides for a long series
of functional tests up to a maximum depth of 50 meters, and at temperatures between -20 ° C and
+70 ° C.

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LIMITATIONS
It is not the purpose of the EN 1809 standard to establish requirements for flotation devices or life
jackets.
▪The BCD is not intended to ensure a high head position on the surface in case of
unconsciousness or inability of the diver.
▪The instructions that follow must be integrated with those relating to the other
components making up your SCUBA set (cylinder unit or assembled double tank).
▪Before using your assembled cylinder or bottle assembly, read carefully all the instructions
for use given in the relevant manuals.
For your safety, it is required that the KNIGHT DIVERS’ BCD is assembled by a technical, expert
and/or trained personnel. KNIGHT DIVERS Ltd cannot be considered liable nor assume any
responsibility for the misuse of the assembling of the BCD.
KNIGHT DIVERS Ltd declines its responsibility for any errors in the compilation of the Use and
Maintenance Manual and is constantly working on the improvement of all its products and reserves
the right to make changes at any time, without prejudice to the essential characteristics described
herein illustrated.

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RISK AWARENESS
WARNING :
This booklet is not a diving manual.
Read the entire manual before using this equipment.
The user manual must be retained for the entire period of the product life.
WARNING :
According to the European standards, our BCDs are to be considered certified only if they are
complete with all the components as the original KNIGHT DIVERS Ltd configuration, including the
quick release LP hose.
FOR SAFETY REASONS, THE BCD MUST ONLY BE USED
WITH THE ORIGINAL QUICK RELEASE LP HOSE SUPPLIED BY KNIGHT DIVERS LTD.
The manufacturer cannot be held responsible for damage to persons or property deriving from
the use of different hoses.
DANGER :
This BCD is not a life jacket or a rescue device and does not guarantee the support in surface of
an unconscious diver in a position where the face remains out of the water.
DANGER :
Do not use this BCD until you have acquired the specific license. Use of this BCD by divers who
have not obtained the required license, may result in serious injuries or even death.
This BCD should be used up to the depth of 50 meters.
WARNING :
These BCDs have been designed to be used with normal atmospheric air and conform to the
requirements for breathable air as established in CEN EN 12021. The use of this product with
oxygen-enriched gas or mixtures (commonly known as NITROX) requires specific preparation and
compliance with laws of the country where the equipment is used. If this is not done according to

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recommendations, it may cause serious or fatal injury due to fires or explosions, and/or cause
extreme damage to the equipment.
WARNING :
A bad or improper use of this BCD could result in a loss of trim, including rapid and uncontrolled
ascents and descents, with the risk of drowning or decompression sickness.
DANGER :
Diving in an environment that is chemically, biologically, or radiologically contaminated is
extremely dangerous.
KNIGHT DIVERS Ltd BCDs must not be used in contaminated environments.
DANGER :
Diving in ice water (in water at 5°C or less) is extremely dangerous.
Do not dive in ice water unless you have been fully trained and with specially dedicated
equipment.
DANGER :
It is essential to take good note of these hazards and danger symbols to avoid critical situations
that may occur while using the BCDs. Such situations may result in serious injury or death.

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TECHNICAL SPECIFICATIONS
Buoyancy Force of the BCDs:
Model GR 13: Maximum buoyancy - 120 Newtons / 12,2 Kilograms / 27 Pounds / 13 Ltrs
Model GR 13 TEK: Maximum buoyancy - 120 Newtons / 12,2 Kilograms / 27 Pounds / 13 Ltrs
Model GR 15: Maximum buoyancy - 150 Newtons / 15,3 Kilograms / 34 Pounds / 15 Ltrs
Model GR 15 TEK: Maximum buoyancy - 150 Newtons / 15,3 Kilograms / 34 Pounds / 15 Ltrs
Model GR 19: Maximum buoyancy - 170 Newtons / 17,3 Kilograms / 38 Pounds / 19 Ltrs
Model GR 19 TEK: Maximum buoyancy - 170 Newtons / 17,3 Kilograms / 38 Pounds / 19 Ltrs
Model GR 19 R: Maximum buoyancy - 180 Newtons / 18,4 Kilograms / 40 Pounds / 19 Ltrs
Wings
Wings are made of CORDURA® 1000 original from Invista, polyurethane coated (Models GR 13, GR
15, GR 19 and GR 19R) or nylon polyurethane double-coated (Models GR TEK).
Harnesses
Harnesses are made of 50 mm polyethylene reinforced polypropylene and include five “D” rings of
AISI 304 stainless steel that allow divers to connect to the harness using different diving accessories.
The buckle is also of AISI 304 stainless steel. The harness belt slides inside a series of AISI 304
stainless steel loops to adjust the harness to any size between S and XXL.
Backplates
The backplate is made of electro polished AISI 304 stainless steel or aluminum, using nuts and bolts
of AISI 304 stainless steel.
Power Inflator & Overpressure Valves
For safety reasons, we recommend that the first time you use the inflate button, you remain on the
surface outside the water.
The Power Inflator of the BCD controls many functions and allows the BCD to reach a neutral trim
during the dive.
Power Inflator functions include:
•The inflating button (side button):
oBy pressing this button, it inflates the BCD. It can be inflated up to a pre-established
pressure that depends on the calibration of the overpressure valve. Once the
maximum pressure is reached, the air is discharged from the valve.
•The top button:
oBy pressing the top button, it allows the inflation by mouth with a special
mouthpiece. Push the button and at the same time blow inside the mouthpiece.
oThe top button (at the end of power inflator) allows for the deflation by raising the
corrugated hose upwards and pressing it.

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DANGER :
▪Never use the inflator mouthpiece as a regulator.
▪The BCD is not a breathing device.
▪Never breathe gas from inside the BCD since it may contain liquids or contaminants that, if
inhaled, could lead to serious injuries or, in extreme situations, even death.
Overpressure Valve
The BCDs are supplied with one overpressure valve located at the bottom left side. The overpressure
valve guarantees the quick release of air.
The function of this valve is to automatically reduce the inner pressure of the wing, in case of
excessive inflation, or reduce the internal pressure by manually pulling the cable located on the
valve itself.
WARNING :
To obtain complete redundancy, only the BCD Model GR 19 R is composed of two independent
wings joined together. Each wing has a complete control unit and an overpressure and rapid
discharge valve: in this case the overpressure valves are located at the bottom, right and left.

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USAGE
Harness assembly, “DIR”type:
1) Insert the strap with the eyelet aligned in the upper back part of the backplate (Fig. 2)
and (Fig. 3).
(Fig. 1) (Fig. 2) (Fig. 3)
2) Run the strap through the upper horizontal slots of the backplate (Fig. 4) and (Fig. 5).
(Fig. 4) (Fig. 5)

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3) Insert a smooth loop and a “D-Ring” on the right belt (Fig. 6). Repeat the procedure on the
opposite side using the “Rubber Ring” (Fig. 7) and insert the retentive band of the power inflator
(Fig. 8).
(Fig. 6) (Fig. 7) (Fig. 8)
4) Insert a smooth loop and a “Bent D-Ring”on both sides (Fig. 9) and (Fig. 10). Insert one end of
the strap from the inside outward through the inner lower sloped slot (Fig. 11). Repeat the
procedure on the opposite side (Fig.9-11).
(Fig. 9) (Fig. 10) (Fig. 11)

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5) Insert a toothed loop on the belt (Fig. 12) and slide it from the outside to the inside through the
sloped outer slit (Fig. 13). Repeat the procedure on the opposite side (Fig. 12-14).
(Fig. 12) (Fig. 13)
(Fig. 14)
6) On the left belt end, insert a smooth loop, and a “D-Ring”approximately 15cm from the
backplate (Fig. 15) and (Fig. 16). Insert the belt in the female attachment of the quick release
buckle for the left crotch strap (Fig. 17).
(Fig. 15) (Fig. 16) (Fig. 17)

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7) Continuing on the left belt, insert the belt through the first slot of the metal buckle and continue
to pass it through the second and third slots, as shown in the following pictures (Fig. 18-23).
(Fig. 18) (Fig. 19) (Fig. 20)
(Fig. 21) (Fig. 22) (Fig. 23)
8) On the right belt end, insert a smooth loop and a “D-Ring”about 15cm from the backplate (Fig.
24). For the right crotch strap, insert the female attachment of the quick release buckle and lock
it with a plastic toothed loop (Fig. 25).
(Fig. 24) (Fig. 25)

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9) Let's move on to the Assembly of the Crotch Strap.
Insert a smooth plastic loop (Fig. 26) and secure the strap by passing it through the proper slot in
the backplate (Fig. 27-29). Mount the male attach of quick release buckles and insert them into
the corresponding attachments on the belt as shown in the following pictures (Fig. 30) and (Fig.
31).
CAUTION :
Be very careful to place the buckles in the correct direction otherwise they will not remain in the
set position. Be sure to check that the buckles remain in the correct position before diving.
(Fig. 26) (Fig. 27) (Fig. 28)
(Fig. 29) (Fig. 30) (Fig. 31)

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Harness assembly, adjustable type:
1) Insert the strap with the eyelet aligned in the upper back part of the backplate (Fig. 33)
and (Fig. 34).
(Fig. 32) (Fig. 33) (Fig. 34)
2) Run the strap through the upper horizontal slots of the backplate (Fig. 35) and (Fig. 36).
(Fig. 35) (Fig. 36)

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3) Insert a smooth loop and a “D-Ring”on the right belt (Fig. 37). Repeat the procedure on the
opposite side using the “Rubber Ring” (Fig. 38) and insert the elastic band of retention of the
control unit (Fig. 39).
(Fig. 37) (Fig. 38) (Fig. 39)
4) Insert a smooth loop and a "Bent D-Ring”(Fig. 40) on both shoulder straps (Fig. 41); add two
more smooth loops (Fig. 42).
(Fig. 40) (Fig. 41) (Fig. 42)

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5) Insert the female attachment of the quick release buckle into the right shoulder strap (Fig. 43)
and slide it back into the smooth loop (Fig. 44) and (Fig. 45).
(Fig. 43) (Fig. 44) (Fig. 45)
6) Insert the remaining strap under a “Bent D-Ring”on the right shoulder strap (Fig. 46) so that it
remains locked (Fig. 47). Repeat the same procedure on the left shoulder strap (Fig. 43-48).
(Fig. 46) (Fig. 47) (Fig. 48)