KNIGHT DIVERS GR 13 User manual

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TABLE OF CONTENTS:
4 INTRODUCTION
5 CERTIFICATION CE
5CONFORMITY ACCORDING TO CE DIRECTIVE
6 DANGER WARNINGS
7 GENERAL WARNINGS
7 LIMITATIONS
8 RISK AWARENESS
10 TECHNICAL SPECIFICATIONS
12 USAGE
29 PRE DIVE PREPARATIONS
33 MAINTENANCE ROUTINE
33 WARRANTY

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INTRODUCTION
Thank you for purchasing a KNIGHT DIVERS BCD.
Our BCDs are made exclusively with the best European production materials, selected and
tested in order 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 with regard 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, workers 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 query, please contact us at:
KNIGHT DIVERS Ltd
62,Triq L-Gholjiet
Mellieha MLH 2105
Malta
Phone [phone]
www.knightdivers.eu
[email protected]

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CE CERTIFICATION
The BCDs described in this manual have undergone a CE type examination, 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 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 graphic symbols to inform you about the risks and dangers you may
encounter in the use and maintenance of the BCDs.
These graphic symbols and their associated captions are:
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 a highly 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 problem you can contact your dealer or contact directly KNIGHT DIVERS Ltd. 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.
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.
KNIGHT DIVERS Ltd declines its responsibility for any errors in the compilation of the Use
and Maintenance Manual and, constantly working for the improvement of all its products,
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 dive 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 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. 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 remain
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 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
conform to 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
recommendations, it may cause serious or fatal injury due to fires or
explosions, or seriously cause damage to the equipment.

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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. The BCDs KNIGHT DIVERS 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 hazard 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
Buoyancyforce of the BCDs:
Model GR 13: maximum buoyancy 120 Newtons 12,2 Kilograms 13 Ltrs
Model GR 13 TEK: maximum buoyancy 120 Newtons 12,2 Kilograms 13 Ltrs
Model GR 15: maximum buoyancy 150 Newtons 15,3 Kilograms 15 Ltrs
Model GR 15 TEK: maximum buoyancy 150 Newtons 15,3 Kilograms 15 Ltrs
Model GR 19: maximum buoyancy 170 Newtons 17,3 Kilograms 19 Ltrs
Model GR 19 TEK: maximum buoyancy 170 Newtons 17,3 Kilograms 19 Ltrs
Model GR 19 R: maximum buoyancy 180 Newtons 18,4 Kilograms 19 Ltrs
Bladder
It is made of Cordura polyurethane coated (Models GR13, 15, 19 and 19R) or nylon
polyurethane double-coated (Models GR TEK).
Harness
The harness are made of 50mm polyethylene reinforced polypropylene and are completed
by five “D” rings of AISI 304 stainless steel that allow to connect to the harness different
diving accessories. The buckle is also of AISI 304 stainless steel. The belt slides inside a
series of AISI 304 stainless steel loops in order to adapt the harness to any size between
the S and XXL.
Backplate:
The backplate is made of electro polished AISI 304 stainless steel or of aluminum; nuts
and bolts of AISI 304 stainless steel.
Power inflator and overpressure valves
For safety reasons, we recommend that the first time you try to use the inflate button
when you are in surface.
The power inflator of the BCD controls a large number of functions and allows to adjust
the BCD to get a neutral trim during the dive:
Load by the button of the inflator (side button); pressing this button 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 (at the end of power inflator) allows the inflation by mouth with a
special mouthpiece: push the button and in the same time blow inside the
mouthpiece.
The top button (at the end of power inflator) allows the deflation by raising the
corrugated upwards and pressing.

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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, it may contain liquids or
contaminants that, if inhaled, could lead to serious injuries or, in extreme
situations, to death.
Overpressure valves
The BCDs are supplied with one overpressure valve located behind on the left side at the
bottom. The overpressure valves guarantee the quick dumping of air. The function of
these valves is to automatically reduce the inner pressure of the bladder in case of
excessive inflation or in case of eventual necessity during the various phases of diving.
The valves can be opened manually pulling the cable located on the valve itself.
WARNING :
To obtain complete redundancy, only the Model GR 19 R is composed of two
independent bladders coupled. Each bladder 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 elastic accessory-holder 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 about 15cm from the backplate
(Fig. 15) and (Fig. 16). Insert the female attach of the quick release buckle for the left
crotch strap (Fig. 17).
(Fig. 15) (Fig. 16) (Fig. 17)

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7) Still on the left belt insert the metal buckle passing and passing the belt on the buckle
following the steps illustrated by 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). Insert the female attach of the quick release buckle for the right
crotch strap 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).
Be very careful to fit the buckles in the correct direction otherwise they will not
remain in the set position.
(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) e (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 elastic accessory-holder 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 a female attach of a quick release buckle onto the right shoulder strap (Fig. 43)
and slide it back into the smooth loop (Fig. 44) e (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)

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7) Insert a male attach of a quick release buckle onto the belt that connects the right
shoulder strap to the belt (Fig. 49) e (Fig. 50). Pull the strap back from the inside to the
outside of the backrest through the sloped outer slit (Fig. 51).
(Fig. 49) (Fig. 50) (Fig. 51)
8) Insert a toothed loop on the right belt (Fig. 52) and slide it from the outside to the
inside through the sloped outer slit of the backplate (Fig. 53) e (Fig. 54). Repeat the same
procedure on the opposite side (Fig. 49-54).
(Fig. 52) (Fig. 53) (Fig. 54)