Halcyon TRAVELER User manual

BUOYANCY
COMPENSATOR
OWNER’S MANUAL
2019

CE CERTIFICATION
INFORMATION
ECLIPSE / INFINITY / EVOLVE / EXPLORER BC SYSTEMS
CE TYPE APPROVAL CONDUCTED BY:
TÜV Rheinland LGA Products
GmbH Tillystrasse 2
D-90431 Nürnberg
Notified Body 0197
EN 1809:2014+A1:2016
CE CONTACT INFORMATION
Halcyon Dive Systems
24587 NW 178th Place
High Springs, FL 32643 USA
AUTHORIZED REPRESENTATIVE IN EUROPEAN MARKET:
Dive Distribution SAS
10 Av. du Fenouil 66600 Rivesaltes
France, VAT FR40833868722
REEL Diving
Kråketorpsgatan 10
431 53 Mölndal
SANTI Sp. z.o.o.
ul.T Wendy 7-9
81-341 Gdynia POLAND
2HALCYON.NET

HALCYON
BUOYANCY COMPENSATOR
OWNER’S MANUAL
TRADEMARK NOTICE
Halcyon® and BC Keel® are registered trademarks of Halcyon Manufacturing, Inc. Halcyon’s
BC Keel and Trim Weight system are protected by U.S. Patents #5855454 and 6530725b1.
The Halcyon Cinch is a patent-pending design protected by U.S. and European law.
Halcyon trademarks and pending patents include Multifunction Compensator™, Cinch™,
Pioneer™, Eclipse™, Explorer™, and Evolve™ wings, BC Storage Pak™, Active Control Ballast™,
Diver’s Life Raft™, Surf Shuttle™, No-Lock Connector™, Helios™, Proteus™, and Apollo™ lighting
systems, Scout Light™, Pathfinder™ reels, Defender™ spools, and the RB80™ rebreather.
WARNINGS, CAUTIONS, AND NOTES
Pay special attention to information provided in warnings, cautions, and notes accompanied by
these icons:
A WARNING indicates a procedure or situation that, if not avoided, could
result in serious injury or death to the user.
A CAUTION indicates any situation or technique that could cause damage
to the product, and could subsequently result in injury to the user.
WARNING
This manual provides essential instructions for the proper fitting, adjustment, inspection, and
care of your new Buoyancy Compensator. Because Halcyon’s BCs utilize patented technology,
it is very important to take the time to read these instructions in order to understand and fully
enjoy the features that are unique to your specific model. Improper use of your BC could result
in serious injury or death.
COPYRIGHT NOTICE
This owner’s manual is copyrighted, all rights reserved. It may not, in whole or in part, be copied,
photocopied, reproduced, translated, or reduced to any electronic medium or machine readable
form without prior consent in writing from Halcyon Manufacturing, Inc.
©2018 Halcyon Manufacturing, Inc.
CONTACTING HALCYON
Halcyon Dive Systems
24587 NW 178th Place
High Springs, FL 32643 USA
386.454.0811
800.HALCYON
386.454.0815 (fax)
[email protected] www.halcyon.net
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GENERAL
PRECAUTIONS & WARNINGS
*Before using this Buoyancy Compensator (BC), you must receive instruction and certification
in SCUBA diving and buoyancy control from a recognized training agency. Use of SCUBA equip-
ment by uncertified or untrained persons is dangerous and can result in serious injury or death.
*Read this owner’s manual completely before attempting to use your BC, and become familiar
with it first in a controlled environment, such as a swimming pool, in order to weight yourself
properly and to become comfortable with using its many features and adjustments.
*Before every dive, perform a complete pre-dive inspection according to the procedure pre-
scribed in this manual, to ensure that all components are functioning properly and no signs of
damage or leaks are present. If your BC is not functioning properly or is damaged, remove it
from service until it can be repaired by an authorized Halcyon Dealer.
*Before every dive, as part of your pre-dive inspection, ensure that all bolts and attachment
components of your BC system are securely connected. This includes the Single Tank Adapter
fasteners to assure your cylinder and STA are secured to the backplate.
*Your BC is not a lift bag. DO NOT use it to bring heavy objects to the surface. Doing so may
cause permanent damage to the BC, and could also result in an uncontrolled ascent.
*DO NOT over inflate your BC. Control all ascents. A rapid, uncontrolled ascent may cause arte-
rial gas embolism or decompression sickness and could lead to serious injury or death.
*In the event of an uncontrolled ascent, it is important to immediately begin venting air from the
BC. Continue venting air to slow your ascent rate if neutral buoyancy cannot be reestablished.
*In an emergency such as an out-of-air situation or uncontrolled descent, it is important to re-
move and jettison weight immediately. DO NOT depend solely on using your BC’s power inflator
to lift you to the surface.
*DO NOT inhale from your oral inflator. The BC may contain harmful contaminants or gasses,
which could cause suffocation, serious injury, or infection of the lungs.
*Disassembly, repair, or lubrication must not be attempted by persons who are not facto-
ry-trained and authorized by Halcyon. Unauthorized service will render the warranty null and
void.
*Factory prescribed service for this BC should be performed at least once annually by an au-
thorized Halcyon Dealer. Annual service consists of a complete overhaul of the power inflator,
and a general air leak inspection of the bladder and valve connections.
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WARNING: Your Buoyancy Compensator (BC) is NOT a lifejacket; it does not guarantee a
head-up position of the wearer at the surface. It does not meet U.S. Coast Guard regula-
tions for a life preserver or personal floation device (PFD). If you become unconscious
in the water without a buddy present to immediately assist you, you may suffer serious
injury or death from drowning.
This product is used only for buoyancy management of certified scuba divers, all other uses are excluded. Your
buoyancy compensator is primarily designed to help you maintain neutral buoyancy while in a comfortably balanced,
face-down swimming position underwater. It is also designed to provide you with flotation so that you can rest on the
surface, but it is not designed to function as a life preserver or personal flotation device (PFD). In order to meet U.S.
Coast Guard regulations, a PFD must be designed so that it automatically directs you to a face-up position and holds
your head out of the water on the surface. The design characteristics of a personal flotation device are therefore
different from those of a buoyancy compensator. The ability of any flotation device to float you in a face-up position
can also be affected by other diving equipment you wear, including a cylinder or exposure suit, and whether it can be
inflated before you lose consciousness.
For this reason, it is important to always dive with a buddy, and maintain close proximity with them at all times. Do
not depend on any flotation device to hold your face above the surface in the event that you are rendered uncon-
scious in the water while diving.
WARNING: While this manual provides some basic guidelines for certain buoyancy control
techniques, it is not a substitute for training from an active teaching status, professional
diving instructor. Failure to weight yourself properly may create a hazardous condition
that could lead to serious injury or death. If you are unsure how to weight yourself in order
to achieve optimum buoyancy underwater and on the surface, do not dive until you have
obtained the necessary instruction from your diving instructor or an authorized Halcyon
Dealer.
If you have any questions regarding your Buoyancy Compensator or these instructions, contact your Halcyon Dealer
or Halcyon directly at: [phone].
This product is designed to last for 5 years after the date of manufacturing under normal use and conditions. Dispos-
al should be conducted in alignment with local authorities.
Halcyon Manufacturing Inc., 24587 NW 178th Place, High Springs, Florida, 32643, USA declare that a sample of the
product listed above has been tested for CE marking according to:
Regulation: EU 2016/425
Report Date of Issue: 09-Mar-2018
Standards: EN 1809:2014+A1:2016
The test reports show that the product fulfills the requirement in the EU Regulation, BP 601 38034 001.
In addition we confirm compliance with legal requirements for harmful substances in Germany (e.g. ban of PCP, Chro-
mium-V I) and that requirements for polyaromatic hydrocarbons (PAH) to AfPS GS 2014:01 PAK are also met. The
manufacturer confirms that the PPE is made from materials which do not affect the health or hygiene of the user. We
also confirm that the PPE is made of materials that under foreseeable conditions of normal use or by degradation
do not release substances generally known to be toxic, carcinogenic, mutagenic, allergenic, toxic to reproduction or
otherwise harmful.
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07
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26
28
30
FITTING YOUR HALCYON BUOYANCY COMPENSATOR
FINE-TUNING YOUR BC SYSTEM
HALCYON CINCH QUICK-ADJUST HARNESS
INSTALLING THE CINCH SYSTEM
DIVING THE HALCYON BC SYSTEM
PRE-DIVE BC SYSTEM INSPECTION
BC SYSTEM CARE AND MAINTENANCE
APPENDIX 1: BC SYSTEM COMPONENT CHECKLIST
APPENDIX 2: HALCYON WARRANTY INFORMATION
APPENDIX 3: HALCYON WARRANTY INFORMATION
TABLE OF
CONTENTS
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The Halcyon Buoyancy Compensator system provides superior buoyancy control and trim
adjustment for divers in any underwater environment. Each component of the BC system: the
proper buoyancy wing, alternative lift device, weighting system, and Secure Harness works
together to provide you with safe, efficient control of your gear while under water and on the
surface. The BC harness system is adjustable to fit all body types, providing for a much more
precise fit than jacket-style BCs.
The Halcyon Buoyancy Compensator has two primary forms of adjustment. The classic adjust-
ment system involves a semi-permanent fitting in which the diver tunes the harness to the ap-
propriate size based upon their physical size or stature and thermal protection. Meanwhile, the
patent-pending Halcyon Cinch System allows the diver to adjust the harness quickly, fine tuning
it for each dive regardless of the thermal protection worn. The classic system can be upgraded
by purchasing a Cinch Upgrade from your Halcyon dealer. Both systems are discussed in detail
with the quick-adjust Cinch outlined later in this text.
To properly fit your Secure Harness before first use, begin by suiting up with the same thermal
protection that you will use with your BC. If you plan to dive with a drysuit, make sure to include
all undergarments. In addition to the thickness of the drysuit, a full set of thermal undergar-
ments can add considerable bulk and have a dramatic impact on the sizing of the harness.
Fitting Your Buoyancy Compensator – Classic Semi-permanent Fitting
You can adjust the Halcyon BC Secure Harness without the use
of special tools by adjusting the fasteners along the back of the
backplate and on the crotch strap (image 1).
To adjust the shoulder straps, loosen the triglide fasteners on
the back of the backplate where the webbing feeds through the
slots (image 2).
Using equal amounts of webbing from both sides of the waist
belt, adjust the straps so that several
fingers can fit under the webbing
along your shoulders (image 3). The shoulder straps need to be loose
enough to be comfortable with your thickest amount of thermal
protection. The fit of the harness should facilitate easy doff/don,
both in water and out of water, yet still remain snug enough so that
your tanks are secure while stage bottles clipped off to the top D-ring
stay close to the chest.
FITTING
YOUR HALCYON
BUOYANCY COMPENSATOR
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To finalize the fit of the harness shoulder straps, loosen the
straps enough to allow easy movement of the backplate.
Position the backplate for proper tank position, with the top
of the backplate high enough to touch by reaching behind
your head with either hand; if you can touch the backplate,
you should be able to reach your valves when your rig is fully
assembled (see image on the left). With the backplate in
position, tighten up the arm straps until you are able to fit two
or three fingers underneath the strap. You should be able to
easily slide the straps off of either shoulder. Be careful not to
leave excessive slack in the harness straps. An exceedingly
loose- fitting harness will allow the backplate to ride low on
your back, making it nearly impossible to reach your valves.
The crotch strap should be comfortable and allow you to reach your tanks. The waist belt
should fit as snug as is comfortable. Do not overtighten the waist belt so much as to restrict
breathing. When adjusting the waist belt, make sure to set the buckle so that it is off to your
right side. With the buckle in this position, the crotch strap is unable to accidentally open the
buckle. The waist belt buckle (and/or another buckle) can be used to hold your primary light
canister in place.
To adjust the crotch strap, buckle the waist strap without running it through the crotch strap.
Now pull the crotch strap up to the waist belt. Set the length so that the top of the crotch strap
loop extends a half-inch (12mm) over the top of the waist belt.
While standing on land, your BC should be snug but not uncomfortably tight. In the water your
harness should be snug enough to prevent notable motion of the cylinder as you change orien-
tation, but not too tight so as to bind or restrict your complete range of shoulder and arm move-
ment.
FITTING YOUR BUOYANCY COMPENSATOR - CINCH QUICK-ADJUST DESIGN
Adjustment of the Secure Harness while wearing the Cinch is quick and easy. Following similar
guidelines, begin your first sizing in the exposure suit you will be diving in. Once finished, check
placement of the D-rings as noted in the previous section and be sure to trim the extra webbing
after you’ve determined the best size range for your Cinch harness and quick adjust crotch
strap.
• To Tighten the Harness: While using both hands, grasp the ends of the waist band
webbing and pull up and outward (at roughly 45 degrees) from the body.
• To Loosen the Harness: Grasp the webbing at the shoulder straps just above the waist.
Push the harness out and up slightly from your waist.
Detailed information on sizing and adjustment of the Cinch design can be found later in this
text.
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The BC harness is the model of simplicity. The Secure Harness utilizes one D-ring on each side
of the chest, avoiding the unnecessary clutter of multiple attachments. One D-ring is located on
your left hip and single D-rings are placed on the front and back of the BC crotch strap. The hip
D-ring is used to attach a pressure gauge, stage bottles, or small tools during a dive.
The knife is placed in a sheath on the waist belt left of the crotch strap, where it can be
quickly deployed with either hand. The knife is small and designed as a tool for cutting line.
Two backup lights are attached, one to each of the two chest D-rings. These lights are held to
the strap by EDPM rubber bands. This location puts the lights in a streamlined position against
your chest while remaining completely accessible.
Once you have properly sized your Secure Harness, you will want to fine-tune the position of the
five D-rings. The shoulder D-rings should be positioned relatively high on the shoulder straps,
especially if you plan to utilize stage bottles in your diving. If the D-rings are too low, the stage
bottles will hang too far away from your body, causing significant drag and possibly damaging
marine environments. The shoulder D-rings should also be high enough to allow for prop-
er storage of your back-up lights and to allow for ease of use of your wing’s inflator hose
to adjust trim and buoyancy, yet not so high that you can’t clip an item off with the same-side
hand as the clip.
To position the shoulder D-rings, extend your arms
straight out to the side, parallel to the ground. Bend at
the elbow and bring your thumb straight to the shoulder
strap. The center of your thumb should intersect the
center of the D-ring (figure 1 on the following page).
Next, reach across your body to (or almost to) your left
shoulder with your right arm (figure 2 on the following
page). Make sure the right-side D-ring doesn’t pinch be-
tween your arm and chest. Do the same with your left.
If either D-ring pinches, adjust it upwards.
The waist D-ring is used for clipping off the SPG
and for stage bottles. To position the waist D-ring,
run your left thumb straight down your left side
until it hits the waist strap. Your thumb should
intersect the D-ring, very close to your hip bone. The
position might need to be adjusted after your first dive
with your BC system. In water, practice clipping/unclip-
ping the SPG and, if you wear stage bottles, have
your buddy check the position of the tanks. You do
not want the waist D-ring positioned so far back that
you can’t comfortably clip or unclip your SPG, nor
so far forward that a buoyant stage would become a
FINE-TUNING
YOUR BC SYSTEM
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hindrance or cause excessive drag.
The rear crotch D-ring is generally used for storing gear not used very often, such as reels or lift
bags. This D-ring needs to be low enough that you can clip/unclip gear (and not be blocked by
the bottom of the tanks), yet high enough that the gear does not hang down too far. Typically,
position the rear D-ring one hand-width down from the bottom of the backplate (figure 3 below).
The front crotch D-ring is only used with a tow-behind scooter. Gear should never be clipped to
this D-ring, as it will hang in the slipstream and pose significant entanglement hazards.
FINAL ASSEMBLY OF YOUR BC SYSTEM
Final assembly includes attaching the Halcyon Single Tank Adapter (STA) to the wing and
backplate with the two supplied fasteners/bolts. If you are using the 6-lb. Convertible Weight,
be sure this is in position in the STA (figure 4 above) and be sure the straps are correctly config-
ured on the STA. Place the wing on top of the STA through the bolts, then the backplate on top
of the wing. Tighten both bolts and fasteners securely. Slide the cam straps over your cylinder
and tighten at desired position in relation to the cylinder’s valve (figure 5 above). When div-
ing with doubles, the backplate is bolted to the cylinders with an Explorer or Evolve buoyancy
wing sandwiched between the backplate and cylinders. The bolts on the cylinder bands thread
through the two grommets on the wing (see images on the following page).
Figure 1 Figure 2 Figure 3
Figure 4 Figure 5
10 HALCYON.NET

WARNING: The cam straps may stretch after they become wet. Always
wet the straps prior to making the final adjustment, and apply enough
tension to ensure that the cylinder is held completely secure. Ensure the
bolt fasteners between the STA and the backplate are secure. Test these
connections before every dive. If the cylinder were to slip free from the
BC while you are diving, you may lose your air supply, which could lead to
serious injury or death.
WARNING: Halcyon BC wings are specifically designed for either single
or double cylinders. Always use the appropriate wing for the designated
cylinder type(s). Failure to use the appropriate amount of lift for a given
cylinder configuration can result in negative buoyancy, which could lead
to serious injury or death. Always test your fully rigged and weighted BC
system in a controlled environment such as a pool before attempting a
dive.
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Halcyon has a long history as an industry leader in BC design, offering simple and robust de-
signs for more than a decade. One of our innovations is the Halcyon Cinch (patent pending).
The Cinch redefines what it means to dive a backplate, building upon a platform of simplicity
while providing unprecedented security and ease of adjustment. Halcyon developed the Cinch
to save divers time and effort while sizing, fine-tuning and resizing your diving harness. Now
you can change suits or divers and adjust the Cinch in a flash; all this without compromising
the harness integrity or our trademark, continuous piece of webbing. Adjustments to the Hal-
cyon Cinch occur by simply sliding the harness through a unique, patent-pending assembly.
Now divers can easily adjust the fit of their plate in or out of the water–a simple push or pull is
all it takes. If you need a quick way to get out of your dive system; if you regularly change the
thickness of your diving suit; or if you train new students in Halcyon rental equipment, this new
invention will change the way you dive.
DIVING WITH THE CINCH
If you are installing a Cinch upgrade, be sure to use new webbing and check that it is free of
blemishes. This manual contains detailed assembly instructions to assist in properly fitting the
Cinch upgrade.
ADJUSTMENT OF THE CINCH HARNESS
Adjustment of the Secure Harness while wearing the Cinch is quick and easy. Be sure to trim the
extra webbing once you’ve determined the best size range for your Cinch harness and quick-ad-
just crotch strap. The Cinch harness can be adjusted in or out of the water and can be used with
single or double cylinders. It is best to adjust the Cinch while the cylinders are supported, such
as sitting on a bench, table edge, tail gate, or similar.
• To Tighten the Harness: While using both hands, grasp the ends of the waist band web
bing and pull up and outward (at roughly 45 degrees) from the body (see figure 6).
• To Loosen the Harness: Grasp the webbing at the shoulder straps just above the waist.
Push the harness out and up slightly from your waist (see figure 7).
It is possible to overtighten the harness. If desired,a triglide can be put in place as a “stopper”
on the webbing to allow a full stop of sizing when the harness has reached it’s desired fit (see
figure 9). (Please see Cinch assembly instructions for additional detail.)
• Left D-Ring: Adjustment of the left hip D-ring position can be done by moving the triglide/
D-ring forward or backward on the assembly .
• Right Light Retainer Assembly: Attachment of the light assembly will be necessary if you
choose to dive a waist-mounted canister light with the Cinch. Consult the Cinch
installation section for full instructions.
• Adjustment of the quick-adjust crotch strap is done quickly by moving the webbing
through the quick-adjust, slide buckle as shown in figure 8. A rear D-ring is included on
HALCYON
CINCH QUICK-ADJUST HARNESS
12 HALCYON.NET

the crotch strap; you may remove this if you choose.
• BC Storage Pad: Undo the bottom bolts to allow access to the pocket if storing a lift
device in the backplate storage pad.
• BC Shoulder Pads: Adjustment of pad placement is done by moving the velcro tabs up
or down in the corresponding slots on the pad then attaching the tabs around the
harness.
• Diving Double Cylinders: You may need to use the Cinch Bolt Extender on the lower tank
band bolt. We suggest you check this when you first set up your Cinch assembly to your
backplate if using double cylinders. We do not suggest using the Bolt Extender on the
top tank band or if you are not diving a Cinch assembly.
A triglide may be put into place to act as a sizing guide to prevent over tightening the harness.
Figure 9 shows the optional triglide placement to prevent over tightening. On the right, in Figure
10 is pictured without.
Complete instructions on installation and sizing of the Cinch and quick-adjust crotch strap can
be found at the end of this Cinch manual section.
HALCYON CINCH COMPONENTS (see image on the following page to match up items with
numbers)
1. Cinch Adapter Plate - High-quality, molded ABS plate is uniquely designed to fit the
contours of your Halcyon backplate, providing unprecedented adjustability without the
risk of quick-release buckles or the hassle of dangling webbing.
2. D-Ring Assembly - Allows the secure harness webbing to slide freely without affecting
the position of the left-hip D-ring.
3. Doubles Bolt Extender - Extends a short bottom bolt, allowing the Cinch System to fit a
variety of double tanks. Available in metric (5mm) or imperial (5 16/18).
4. Bolts Kit - Comes with four (two 1/4 - 20 by 3/8, two 1/4 - 20 by 5/8) SS bolts with weld
Figure 6 Figure 7 Figure 8
Figure 9 Figure 10
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mate nuts. Two wing nuts also come with the Infinity System.
5. Light Retainer Assembly - Allows the secure harness webbing to slide freely without
affecting the position of a light mounted to the right hip.
6. Weight Pocket Attachment (Pair) - Secures the Halcyon ACB integrated weight system to
the harness and allows the secure harness webbing to slide freely without affecting the
placement of the ACB.
7. Quick-adjust Crotch Strap - Features a quick-adjust, sliding buckle for easy crotch strap
sizing.
14 HALCYON.NET

If you are upgrading to the Cinch, it is important that you start with new harness webbing when
retrofitting the Halcyon Cinch to an older backplate. New webbing allows the Cinch to slide free-
ly whereas old webbing will catch at the indents left from previous triglide/D-ring placement.
• Remove all webbing accessories starting with the waist belt, including the SS waist
buckle, left D-ring/triglide, ACB weight pockets, and knife sheath.
• Remove the triglides from behind the plate and pull the webbing through the lower back
plate slots.
• Finish removing the webbing from the top slots after removing the D-rings.
• Start with a new set of webbing that is free from indents or blemishes.
• Align the Cinch plate assembly to the backplate and attach it using the provided bolts.
The Light Retainer Fixture attaches using the right bolt, which also holds the Cinch to
your backplate. If using the the light fixture, secure the left (3/8”) bolt first. You can
insert the right bolt when installing the light fixture. If you are not using the light fixture,
you may secure both bolts (3/8”) at this time (figure 11 & 12).
ATTACHING THE D-RING (LEFT) AND LIGHT RETAINER ASSEMBLY (RIGHT)
The D-ring and light-retainer assemblies allow you to adjust your webbing freely without affect-
ing the position of the light and/or D-ring.
Left (as worn by the diver): You will be using the left, outermost slot of the Cinch plate to at-
tach the d-ring fixture. Thread the webbing of the D-ring through the outer Cinch slot and then
through both sections of the triglide. Adjust length as desired. After the waist band is assem-
bled, feed the waist belt through the slot on the D-ring holder (figure 13 &14).
Right (as worn by the diver): If you are using a waist mounted light canister, it is necessary to
attach the light retainer assembly. In this case you will be using the right, outermost slot on the
Cinch to secure the light assembly. The same bolt secures both the assembly piece and the
Cinch plate.
INSTALLING
THE CINCH SYSTEM
Figure 11 Figure 12
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‘To Install the Light Retainer Assembly:
•Insert the rigid webbing grommet hole through the right outer slot on the Cinch (figure
15).
• Fold the webbing and align the grommet with the hole on the Cinch. Secure both items
with the 5/8” bolt & tighten snugly (figure 16).
• Thread the waist band webbing through the backplate slots.
• Slide the buckle fixture on to the waist band with the open end of the buckle facing the
backplate. The buckle is secured to the tab of webbing protrudes from the attached light
fixture (figure 17).
• The buckle can be adjusted and the light positioned according to individual preference
(figure 18).
ATTACHMENT OF ACB INTEGRATED WEIGHT POCKETS TO THE CINCH
• Insert the ACB attachment webbing through the triglide on the pocket (figure 19). Adjust
ment of this triglide position determines placement on the waist. The extra webbing
should be tucked into the slot after attachment (figure 20).
• Insert the webbing grommet hole through the (R or L) outer slot on the Cinch (figure 21).
• Fold the webbing and align the grommet with the hole on the Cinch. Secure both items
with the 5/8” bolt & tighten snugly (figure 22).
• Thread the waist band webbing through the ACB slots (figure 23).
Repeat the process on the opposite side, then reassemble your harness & components.
Figure 13 Figure 14
Figure 15 Figure 16 Figure 17 Figure 18
Figure 19 Figure 20 Figure 21 Figure 22 Figure 23
16 HALCYON.NET

FINAL ASSEMBLY
Verify that the Cinch is
secure on the backplate
with the light, ACB
weight pockets, or D-ring
fixtures attached as
desired. Ensure the web-
bing is threaded properly
through the Cinch (see
images to the right) and
any installed fixtures.
Install the knife pocket
and waist buckle to the
desired positions. Trim excessive webbing from the ends of the waist but remember to leave
room for various suit/undergarments.
INSTALLING THE QUICK-ADJUST CROTCH STRAP
If retrofitting an existing Halcyon plate, unweave the crotch strap from the tri-glide. Remove
the tri-glide/D-ring and remove the webbing from the backplate. Run the end of the webbing
into the quick-adjust slide buckle with the buckle curve facing downward as shown. Thread the
webbing through the backplate from the front to the back of the plate as shown (figure 24). The
D-ring is placed between the tri-glide and webbing after threading it through the plate, as seen
in figure 25, so it will be secured under all the webbing. Then thread the webbing through the
quick-adjust triglide, then back through both slots of the standard triglide (figure 26-27). Ad-
just the length as needed to insure a proper fit. The recommended D-ring location is roughly a
hand’s width from the bottom of the backplate. Adjusting the triglide close to the backplate as
discussed above provides additional room to refine the quick-adjust buckle position.
POSITIONING THE QUICK ADJUST
Once the crotch strap length is sized correctly, you may find the crotch strap quick buckle adjust
sits incorrectly, e.g. too far from the plate (figure 28). To correct this, maintain the proper length
of crotch strap and move the quick adjust buckle up toward the backplate, creating a loop of
webbing behind the triglide. Pull the webbing through the triglide until the extra webbing is all
the way through and the quick adjust buckle remains an appropriate distance from the back-
plate (figure 29). Keep the triglide/D-ring and the quick adjust fairly close together, then thread
Figure 24 Figure 25 Figure 26 Figure 27
17
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the webbing back through the triglide. Cut off excess webbing “tail” leaving enough for future
length adjustments as necessary (figures 30-31).
Confirm that your hardware is in the correct place by trying on your back-
plate. D-ring should sit appropriately from the bottom of the plate. Sizing
of the quick-adjust crotch strap is now done quickly by sliding the webbing
through the quick- adjust buckle.
Any excess webbing tail may be tucked back through the backplate and se-
cured with a section of the EPDM band off the crotch strap if it’s necessary
to keep it longer, e.g., when using the System in Rental or Training. You will
need to undo this when using the quick-adjust, so be aware of this when
sizing on a new diver.
DOUBLES BOLT EXTENDER
The Cinch can easily be used with double cylinders. If you have shorter bolts
on any set of tank bands, you may need to use the extension bolt on your
bottom tank band. Simply screw the extension bolt to the bottom bolt of the
tank band (snugly) onto the bottom tank band, and set up your backplate as
normal. Note: It is not desirable to use the bolt extender on the top bolt.
INSTALLATION OF HALCYON DELUXE HARNESS PADS
Halcyon offers a Deluxe Harness upgrade featuring a set of shoulder pads and a backplate pad
for the ultimate comfort while diving in thinner exposure suits. Our deluxe shoulder pads allow
the diver to customize D-ring position by way of movable velcro tabs (figure 32-33). The back-
plate pad also features a BC Storage pocket allowing the diver to carry a surface marker or lift
bag in a streamlined position.
To Install Your Shoulder Pads:
Please note that the shoulder pad sits below the harness and is secured by three Velcro tabs
on each shoulder. These tabs can be adjusted up or down to customize their location and make
room for chest D-rings.
Figure 28 Figure 29 Figure 30 Figure 31
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1. Open the large Velcro tab which is positioned at the enD
of the shoulder pad. Thread this tab between the harness
and the backplate slot. The Velcro should be facing up
and run through the same backplate slot as the harness.
Secure the large Velcro tab. The end of the pad should be
attached to the plate.
2. Position the harness strap above the shoulder pad and
line up the small vinyl tabs so they fit appropriately while
allowing room for the D-ring and providing a secure at-
tachment for bottom of the pad.
3. We recommended you fold the “loop” (softer part of
the Velcro) side of the Velcro in half to create a smooth
surface which simplifies insertion of the tabs through the
slot on the shoulder pad. Do not force the vinyl tab
through the slots in the shoulder pad.
4. You can place the Velcro tabs along any of the
slots in the shoulder pad but you should verify
the pad is secured evenly with the D-ring and ac-
cessory attachments (EPDMbands for Scouts, etc.) in
their proper position.
To Install the Backplate Pad:
1. Secure the top two holes on each side of the plate by
inserting the nut in the hole on the face of the back-
plate. Wrap the tab of the pad around the plate and secure the bolt by screwing into the
nut that rests in the backplate mounting hole.
2. Repeat step one for the top two holes on each side of the backplate.
3. The third set of bolts is usually attached by folding the tab under the pad so it sits on
the face of the backplate. This provides additional room for lift devices. If you are not
using lift devices you may use the same method as detailed in step one. If you are using
the storage pocket in the pad the nut is sandwiched between the tab and the pad and is
aligned with the third backplate hole. The bolt runs from the back side of the plate and
attaches to the nut. This is also the recommended method of attachment if you will be
using a Cinch Quick-adjust harness.
4. The final bottom bolts (at the bottom of the plate) should be left undone if using the
backplate Storage pak. If you will not be using the Storage Pak you can attach the bottom
tabs.
5. Be sure you check your bolts are securely fastened. It is recommended to check the tight-
ness of your bolts regularly, particularly for the first few dives after assembly.
Figure 32
Figure 33
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HALCYON.NET

USING A LIFT DEVICE WITH YOUR BC SYSTEM
The optional BC Storage Pak (figure 34) provides stealth storage
for alternate lift and signaling devices. Storing devices in the Pak
eliminates the possibility of accidental damage or entanglement
on land, in a boat, or in the water. The Storage Pak bolts onto your
rigged Secure Harness backplate with the eight supplied bolts. Al-
ternate lift devices are carried in the Pak folded flat, with the snap
connected to the left waist D-ring. To deploy the device, simply
detach the bolt snap with your left hand and then pull down and
to the left. Once the device has cleared the Pak it can be inflated
using the low-pressure hose from your BC inflator or by using a
low-pressure hose connected to a separate air source such as a dry suit inflator (figure
25).
The BC Backplate Pad (part of the Deluxe Harness kit) also
features a built-in Storage Pak and provides additional
padding if desired.
Alternative lift devices include Diver Alert Markers (safety
sausages), Surf Shuttles, Lift Bags, and the Halcyon Diver’s
Life Raft. A complete list of Halcyon lift devices is available
in this manual’s appendix.
WEIGHTING YOUR HALCYON BC SYSTEM
The Halcyon Buoyancy Compensator provides for quick and easy adjustment of your ballast.
Once properly fitted, your Harness and backplate can be used with any of the Halcyon sin-
gle-cylinder wings or double-cylinder wings, with only minor adjustments of the harness to
account for different exposure suits and by the selection of the appropriate weighting system.
The goal of any SCUBA configuration is to create a system that allows a diver control at both
the beginning and end of a dive.
Proper weighting involves balancing a number of factors, including: increased surface buoyancy
(particularly in a neoprene suit before compression); the weight of your breathing supply (re-
duced as the dive continues); and the need to remain neutral at 10’ (3m), assuming near empty
cylinder (or cylinders). Typically, more than 80% of the weight a diver wears to sink a neoprene
suit is needed only within the first atmosphere. At depth, compression of the material forces the
diver to offset the reduction in lift with additional buoyancy. Furthermore, divers must ensure
sufficient weight to counteract empty cylinders near the surface where the neoprene suit is not
compressed and will begin to exert additional lift.
DIVING
THE HALCYON BC SYSTEM
Figure 34
Figure 35
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