Bism Neleus RX Series User manual

ＲＸ (NELEUS)

ＲＫ (re//brass)

ＲＢ (Beans)

ＲＳ (SUMERGE)

Regulators

OPERATING MANUAL

Introduction

Thank you for purchase of our product.

This manual is the guidebook to provide instructions

on how to use your single hose type regulator

(hereinafter just called regulator) of open circuit

scuba for recreational diving.

We believe this manual is useful in mastering

technology of a regulator for people who have learned

the right usage of a regulator and obtained a C-card

through proper training at a diving instruction

organization as well as people who use it at C-card

training. Please carefully read and digest the

contents of this manual before use. We also suggest

that you take this manual with you to refer to before

diving.

Keep this manual in a safe place. If you lose it,

contact your original dealer or authorized

distributor of our company. A replacement manual will

be reissued later.

The main contents consist of the check before use,

usage, care after use, storage, and a periodic

inspection.

This product is diving gear to use in combination

with gauges, octopus and B.C., etc. for recreational

diving. Therefore, the knowledge of the right

handling of combination equipment is also necessary.

Please use the operating manual of the combination

equipment which you use as well as this manual.

In addition, depending on the model of gauges,

octopus, low pressure hose for B.C. and dry suit to

be attached to the first stage, it is considered not

being suitable for the use by the combination with

this product. We recommend you use by the combination

with the equipment made by Bism.

We are constantly researching and improving our

Regulators, and so the product you purchased may

differ in certain details from the one described in

this manual. If you have any queries regarding your

regulator or the information contained in this

manual, please feel free to contact our company at

the address lower right.

CONTENTS

Introduction　・・・・・・・・・・・・・・・・１

Important Infomation　

・・・・・・・・・・・２

Special Features ・・・・・・・・・・・・・・２

Precaution is

　・・・・・・・・・・・・・・・３

Names of Parts & Specifications　・・・・・４～８

Installation of Various Hoses　・・・・・・・・９

Check before Use & Setting 　・・・・・・・・１０

Basic Usage　・・・・・・・・・・・・・・・・１１

Care after Use & Storage　・・・・・・・・・・１２

Periodic Inspection & Service after the Sales・１３

Troubleshooting　・・・・・・・・・・・・・・１４

Key to Symbols Used in this Manual

　　Danger　　

　　Warning　　

　　Caution　　

【Note】　Useful Information to know.

Bism CORPORATION

5F, NF Bldg., Higashinihonba shi, Chuo—ku, Tokyo Japan 103-0004

Phone: +81-3-5640-8126 Fax: +81-3-5640-8131

E-mail: info@bism.co.jp　URL: http://www.bism.co.jp

Danger indicate a great risk of death or

serious injury from improper use.

Warning indicate a risk of death or serious

injury from improper use..

Caution indicate a risk of minor injury or

damage to property from improper use.

Before Use

It is vital to safety that you use and maintain your regulator correctly and have it inspected periodically. Carefully

read and understand the advice on safety given in the manuals of this product and also the combination equipment which

you use before diving.

　　 Warning

● Do not use this product for any purpose other

than recreational diving.

■ Use only for recreational diving.

　　 Warning

● Use this product after having obtained a C-card

and completing a proper training program at a

recognized diving school, and be familiar with

the product, or under the instruction of the

diving school. Otherwise it may cause an accident

resulting in injury or death.

■ Obtain C-card before use.

　　 Warning

● When you use this product, please follow all the

instructions about the safety directed in this

operating manual.

■ Please follow instructions about safety.

　　 Warning

● Do not use this product if it is not functioning

normally.

● If your regulator starts to function abnormally,

contact your original dealer or authorized

distributor of our company. Using a faulty

regulator may cause an accident resulting in

injury or death.

■ Do not use if functioning abnormally.

IMPORTANT INFORMATION

Purpose of Use

This product is diving gear for recreational diving use.

The connection with the cylinder for scuba (hereinafter called“tank”) allows the use and is a breathing apparatus

supplying of air in the tank at the time of recreational diving.

The Features of this Product

SPECIAL FEATURES

Since the second stage and a low-pressure hose are connected by the double swivel mechanism, the 360-degree rotation to back and forth and

around is possible for the second stage. As it follows a motion of a diver's face naturally, you can use it comfortably.

The balance twin piston designed to supply stable air depending on depth is adopted to the first stage.

Adding the Primary Low-Pressure Port only for the main second stage, natural inhalation feeling with large flow and low resistance is realized.

The lightweight exclusive plastic hose is adopted as a low-pressure hose. Since it is no odor nature (Food Sanitation Act conformity hose), the

air to supply is also clean. In addition, its excellent flexibility also reduces the stress of your month.

The flow of the second stage can be arbitrarily adjusted with the FCV mechanism installed in the double swivel portion according to a diver's

vital capacity, a breathing pattern, and dive depth.

■ Adoption of Balance Twin Piston

■ Adoption of Primary Low-Pressure Port (PLP)

■ Adoption of Double Swivel

■ Adoption of an exclusive plastic hose

■ Adoption of Flow Control Valve (F.C.V.) (Except RB3010・3011, RS3000)

A feeling of inhalation improves by adoption of the Turbo Lever.

■ Adoption of Spiral Flow EX (RX・RK・RB3400.3401)

End configuration of couplings for regulator hose is changed into the full conformity form of ANSI.Z86.7.2 of the U.S. diving industry standard

from the JIS threads.

■ Global standard correspondence of couplings for regulator hose.

The first stage of RX series corresponds to the low water temperature.

■ First stage (RX) corresponding to the low water temperature (4℃ )

The Spiral Flow designed to supply light and stable air even in the great depth is adopted to the second stage.

■ Adoption of Spiral Flow (Except RB3010, RS3000)

　　　　　　 Warning

● Please do not fold or pull a hose. It

not only breaks, but it may cause an

accident resulting in injury or death.

□ Do not fold or pull a hose.

□ Avoid contact with chemicals.

If mercury and chemicals (thinner, gasoline

and various solvents or those cleaner,

adhesives, paint, medicine and cosmetics

which are containing them) adhere,

discoloration and breakage may be occurred on

the main body and hoses.

□ Please use designated grease.

Please apply the designated grease to the

designated portion only. Breakage may be

caused, if greases other than designated are

used or you apply to the portion out of the

designation. (Please refer to “Installation

of Various Hoses”in the page 9)

Warning

● This product is designed to attach to

the tank which can fill up 250bar or

less with the air in the atmosphere.

Therefore, the tank with pure oxygen or

high fraction of oxygen cannot be used.

● Please do not use the tank with the

fraction of oxygen of greater than 40%

for the regulator made out of titanium.

Ignition and combustion is generated,

and it may cause an accident resulting

in injury or death.

□ Check the tank to use.

□ Follow the safety rules.

Only use under the direction of a recognized diving school or

after obtaining a C-card having completing a proper training

program at a recognized diving school and thoroughly

familiarizing yourself with the correct use of a regulator.

Have your buddy double check everything.

Avoid diving deeper than 30m/98ft. (This is the maximum safe

depth for normal recreational diving.)

□ Please use the Bism made hose guard.

Please do not attach hose guards and hose protectors other than

our products to a low-pressure hose. It may cause hose breakage.

□ Avoid shocks.

Though the product can withstand the shock in

the usual use, drops and hard knocks may

damage it.

Warning

● It is a regulator for recreational diving to use in

the normal water area (the ocean, a lake, fresh water

and seawater swimming pool). You cannot use it in

special environment containing a medicine, a solvent,

oil, etc.

□ Do not use it in special environment.

　PRECAUTIONS

□ Do not modify the product.

Since it may become a safety problem, please

do not modify the product. Responsibility

cannot be taken about the trouble after

modification.

　　　　　　　　 Warning

● A regulator does not operate

normally when the water pressure

sensor hole of the first stage and

the second stage of the regulator is

blocked up. Please do not block up

the water pressure sensor hole.

□ Do not block up the water pressure sensor hole.

Oxygen

Grease

Gasoline

NAMES OF PARTS & SPECIFICATIONS

Names of Parts Names of Parts

Specifications Specifications

Weight　…………………………… 460 g

Height　…………………………… 60 mm

Working Pressure…………………… 250 bar

Intermediate Pressure (L.P. /P.L.P.) Port…4 ports (3/8-24UNF)

High Pressure (H.P.) Port ………… 2 ports (7/16-20UNF)

Temperature Range ………………… ＋ 4 ～＋ 50℃

Decompression Method ……………………… Balance Twin Piston

Material　 ………………………… Titanium

Surface Treatment DLC Coating (RX3400PT)

Weight　…………………………… 460 g

Height　…………………………… 60 mm

Working Pressure…………………… 250 bar

Intermediate Pressure (L.P. /P.L.P.) Port…4 ports (3/8-24UNF)

High Pressure (H.P.) Port ………… 2 ports (7/16-20UNF)

Temperature Range ………………… ＋ 4 ～＋ 50℃

Decompression Method ……………………… Balance Twin Piston

Material　 ………………………… Titanium

Weight (Including Hose)… 360 g

Width of Exhaust Tee………… 90 mm

Operation Method……………… Combined Use of Diaphragm and Downstream

Temperature Range………… ＋ 4 ～＋ 50℃

Material Body Case: POM Plastic

Face Cover: Titanium

Mouth Piece: Silicone Rubber

Valve: Titanium, POM Plastic

Surface Treatment PTIP Treatment (RX3400PT)

Weight (Including Hose)… 365 g

Width of Exhaust Tee………… 90 mm

Operation Method……………… Combined Use of Diaphragm and Downstream

Temperature Range………… ＋ 4 ～＋ 50℃

Material Body Case: POM Plastic

Face Cover: Aluminum Alloy

Mouth Piece: Silicone Rubber

Valve: Titanium, POM Plasti

Surface Treatment Hard Anodizing Coating

RX3400/3410 RX3411

First Sta First Stage

Second Stage Second Stage

ＨＰ

ＰＬＰ

Mouth Piece

Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Dust Cap

ＨＰ

ＰＬＰ

Mouth Piece

Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Mouth Piece

Purge Button

Water Pressure

Senser Hole

Face Cover

Dust Cap

NAMES OF PARTS & SPECIFICATIONS

Names of Parts Names of Parts

Specifications Specifications

Weight　…………………………… 460 g

Height　…………………………… 60 mm

Working Pressure…………………… 250 bar

Intermediate Pressure (L.P. /P.L.P.) Port…4 ports (3/8-24UNF)

High Pressure (H.P.) Port ………… 2 ports (7/16-20UNF)

Temperature Range ………………… ＋ 4 ～＋ 50℃

Decompression Method ……………………… Balance Twin Piston

Material　 ………………………… Titanium

Weight　…………………………… 460 g

Height　…………………………… 60 mm

Working Pressure…………………… 250 bar

Intermediate Pressure (L.P. /P.L.P.) Port…4 ports (3/8-24UNF)

High Pressure (H.P.) Port ………… 2 ports (7/16-20UNF)

Temperature Range ………………… ＋ 4 ～＋ 50℃

Decompression Method ……………………… Balance Twin Piston

Material　 ………………………… Titanium

Weight (Including Hose)… 340 g

Width of Exhaust Tee………… 90 mm

Operation Method……………… Combined Use of Diaphragm and Downstream

Temperature Range………… ＋ 4 ～＋ 50℃

Material Body Case: POM Plastic

Face Cover: ABS Plastic

Mouth Piece: Silicone Rubber

Valve: Titanium, POM Plastic

Weight (Including Hose)… 365 g

Width of Exhaust Tee………… 90 mm

Operation Method……………… Combined Use of Diaphragm and Downstream

Temperature Range………… ＋ 4 ～＋ 50℃

Material Body Case: POM Plastic

Face Cover: ABS Plastic

Mouth Piece: Silicone Rubber

Valve: Titanium, POM Plastic

RX3430K RX3430W

First Stage First Stage

Second Stage Second Stage

ＨＰ

ＰＬＰ

Mouth Piece

Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Mouth Piece Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Dust Cap

ＨＰ

ＰＬＰ

Mouth Piece

Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Mouth Piece Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Dust Cap

NAMES OF PARTS & SPECIFICATIONS

Names of Parts Names of Parts

Specifications Specifications

Weight　…………………………… 45560 g

Height　…………………………… 63 mm

Working Pressure…………………… 250 bar

Intermediate Pressure (L.P. /P.L.P.) Port…4 ports (3/8-24UNF)

High Pressure (H.P.) Port ………… 2 ports (7/16-20UNF)

Temperature Range ………………… ＋ 4 ～＋ 50℃

Decompression Method ……………………… Balance Twin Piston

Material　 ………………………… Titanium

Weight　…………………………… 790 g

Height　…………………………… 60 mm

Working Pressure…………………… 250 bar

Intermediate Pressure (L.P. /P.L.P.) Port…4 ports (3/8-24UNF)

High Pressure (H.P.) Port ………… 2 ports (7/16-20UNF)

Temperature Range ………………… ＋ 5 ～＋ 50℃

Decompression Method ……………………… Balance Twin Piston

Material　 ………………………… Cupper Alloy

Weight (Including Hose)… 385 g

Width of Exhaust Tee………… 90 mm

Operation Method……………… Combined Use of Diaphragm and Downstream

Temperature Range………… ＋ 4 ～＋ 50℃

Material Body Case: POM Plastic

Face Cover: ABS Plastic

Mouth Piece: Silicone Rubber

Valve: Copper Alloy, POM Plastic

Weight (Including Hose)… 440 g

Width of Exhaust Tee………… 90 mm

Operation Method……………… Combined Use of Diaphragm and Downstream

Temperature Range………… ＋5～＋ 50℃

Material Body Case: POM Plastic

Face Cover: Copper Alloy

Mouth Piece: Silicone Rubber

Valve: Copper Alloy, POM Plastic

RX3440K RK3400

First Stage First Stage

Second Stage Second Stage

ＨＰ

ＰＬＰ

Mouth Piece Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Dust Cap

ＨＰ

ＰＬＰ

Mouth Piece

Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Dust Cap

Names of Parts Names of Parts

Specifications Specifications

Weight　…………………………… 790 g

Height　…………………………… 60 mm

Working Pressure…………………… 250 bar

Intermediate Pressure (L.P. /P.L.P.) Port…4 ports (3/8-24UNF)

High Pressure (H.P.) Port ………… 2 ports (7/16-20UNF)

Temperature Range ………………… ＋ 5 ～＋ 50℃

Decompression Method ……………………… Balance Twin Piston

Material　 ………………………… Cupper Alloy

Weight　…………………………… 790 g

Height　…………………………… 60 mm

Working Pressure…………………… 250 bar

Intermediate Pressure (L.P. /P.L.P.) Port…4 ports (3/8-24UNF)

High Pressure (H.P.) Port ………… 2 ports (7/16-20UNF)

Temperature Range ………………… ＋ 5 ～＋ 50℃

Decompression Method ……………………… Balance Twin Piston

Material　 ………………………… Cupper Alloy

Weight (Including Hose)… 380 g

Width of Exhaust Tee………… 90 mm

Operation Method……………… Combined Use of Diaphragm and Downstream

Temperature Range………… ＋ 5 ～＋ 50℃

Material Body Case: POM Plastic

Face Cover: ABS Plastic

Mouth Piece: Silicone Rubber

Valve: Copper Alloy, POM Plastic

Weight (Including Hose)… 370 g

Width of Exhaust Tee………… 90 mm

Operation Method……………… Combined Use of Diaphragm and Downstream

Temperature Range………… ＋5～＋ 50℃

Material Body Case: POM Plastic

Face Cover: ABS Plastic

Mouth Piece: Silicone Rubber

Valve: Copper Alloy, POM Plastic

RB3400/3401 RB3010/3011

First Stage First Stage

Second Stage Second Stage

ＨＰ

ＰＬＰ

Mouth Piece

Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Mouth Piece

Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Dust Cap

ＨＰ

ＰＬＰ

Dust Cap

Mouth Piece

Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

Dust Cap

Mouth Piece Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

FCV Knob

Yoke Screw Yoke H.P. Port

P.L.P. port

NAMES OF PARTS & SPECIFICATIONS

Nominal Size of Coupling Threads………………… 3/8-24UNF

Hose Working Pressure…………… 15 bar

Minimum Bending Radius (Inside of Hose)… 15 m m

Hose Guard

……………………… Regular Equipment

Material: Elastomer Plastic

Hose Length……………………… RX,RK,RS : 750 mm

RB3400・3401,RB3010・3011 : 700 mm

Outer Diameter……………………………… 13 mm

Material of Inner Tube and Outer Cover…………Vinyl Chloride

ChlorideMaterial of Couplings…………………… Copper Alloy

NAMES OF PARTS & SPECIFICATIONS

Names of Parts

Specifications

Weight　…………………………… 790 g

Height　…………………………… 60 mm

Working Pressure…………………… 250 bar

Intermediate Pressure (L.P. /P.L.P.) Port…4 ports (3/8-24UNF)

High Pressure (H.P.) Port ………… 2 ports (7/16-20UNF)

Temperature Range ………………… ＋ 5 ～＋ 50℃

Decompression Method ……………………… Balance Twin Piston

Material　 ………………………… Cupper Alloy

Weight (Including Hose)… 375 g

Width of Exhaust Tee………… 90 mm

Operation Method……………… Combined Use of Diaphragm and Downstream

Temperature Range………… ＋5～＋ 50℃

Material Body Case: POM Plastic

Face Cover: ABS Plastic

Mouth Piece: Silicone Rubber

Valve: Copper Alloy, POM Plastic

RS3000 COMMON

First Stage

Hose

Second Stage

ＨＰ

ＰＬＰ

Dust Cap

Mouth Piece Purge Button

Water Pressure

Senser Hole

Face Cover

Low Pressure Hose

Double Swivel

Yoke Screw Yoke H.P. Port

P.L.P. port

Installation of High Pressure Hoses

　 Warning

● Please install the high pressure hose to an H.P. port,

and only the thread size of 7/16-20UNF of high pressure

hose couplings should be connected. Otherwise, not only

it causes the damage of equipment, but also a hose comes

off and it may cause an accident resulting in injury or

death.

　 Warning

● Please install the high pressure hose to an H.P. port,

and only the thread size of 7/16-20UNF of high pressure

hose couplings should be connected. Otherwise, not only

it causes the damage of equipment, but also a hose comes

off and it may cause an accident resulting in injury or

death.

Installation of Low Pressure Hoses

＊ High Pressure Hose: It means the hose for pressure gauge here. ＊ Low Pressure Hose: The hose for safety second.

B.C. hose.

Air supply hose for dry suit.

Please remove the plug from the H.P. port of the first stage of

a regulator.

1 1

Please

screw in the coupling of a high pressure hose to H.P. port and turn it clockwise

with a spanner to tighten it. Tightening torque is 9.8 N・m (100 kgf・m).

2 2

Please remove the plug from the L.P. port of the first stage of

a regulator.

Please screw in the coupling of a low pressure hose to L.P. port and turn it

clockwise with a spanner to tighten it. Tightening torque is 9.8 N・m (100 kgf・m).

INSTALLATION OF VARIOUS HOSES

　 Caution

● Please ask the authorized distributor of our company for installation of high and low pressure hoses and

plugs.

● When you tighten hose couplings with a spanner, please keep the tightening torque (1/36 turns from a

tightening start) of 9.8N・m (100kgf・cm). Otherwise it may cause to damage the threads portion. In the

case of the value of tightening torque listed in the operating manual of a tightened side (gauge, safety

second, etc.) is smaller than 9.8N, m, please follow the value.

　 Warning

● Please attach a hose in the state that the first stage of a regulator is not connected

to a tank. If the first stage is pressurized during work, a plug in the port flies and

it is dangerous.

● Please confirm that O-rings are set at the threads portion of each hose. When there are

no O-rings, it causes the air leakage.

Check of the hoses.

Check of the air leakage.

Check of the air intake and exhaust.

Check if there is any air leakage on the first and second stage of

regulator, connecting portion of hose and hose itself.

Please hold a mouthpiece in your mouth, breathe with a mouth 4 ～ 5

times, and check that air flows normally.

Check that the O-ring is attached to the tank valve.

(1)

Turn a yoke screw to the right, and tighten it until the end

connection stops shaking.

(3)

Making the direction of the second stage of a regulator so as it

comes out of a right shoulder, and put a yoke so that the end

connection of the first stage of a regulator may suit the groove

of the O-ring of the tank valve.

(2)

Open the tank valve slowly and once it gets to full open, return

by half-rotation.

(5)

【Note】

○ A tank valve also has a kind. The question about a tank valve

should read the operating manual of the tank valve.

Bite the projection portion of a mouthpiece lightly with your teeth,

and hold it in your mouth so that the whole may be covered with lips.

Cover with your lips.

How to Hold a Mouthpiece in Your Mouth.

　 Caution

● Please do not bite the projection portion of a

mouthpiece strongly. You may cut it off, if you

bite strongly.

　 Warning

● If there is an abnormality in your regulator by following various checks, you must not use it.

● When there is an abnormality, contact your original dealer or authorized distributor of our company. Use

of the regulator which is not normal may cause an accident resulting in injury or death.

Before setting your regulator to a tank valve, please check whether

the hose is damaged and has not broken.

All the hoses, such as a hose of the safety second connected to the

first stage and a high pressure hose, are to be checked.

Setting the regulator to a tank.

　 Warning

● After setting, when air does not come out from the

second stage of the regulator normally, please do

not use it.

● When the inhaled air has a smell, please stop to

use the tank and change for other tanks. When the

air still has a smell even if you change a tank,

please stop to use the regulator.

　 Caution

● Please do not tighten a yoke screw too much

strongly. It may be unable to take off after use.

Check of the second stage.

Check if there is any crack in each part of the second stage by

visual.

　　　 Warning

● Please check whether the face cover is

tightened enough.

If not, please retighten it.

Before opening the tank valve, please hold a mouthpiece in your

mouth and inhale air to check if the air does not leak and does

not come in to your mouth.

(4)

　　　　 Warning

● Please open a tank valve after

checking that the regulator is set to

a tank in the right direction, and

that the yoke screw is tightened

firmly.

● Please open the tank valve slowly.

CHECK BEFORE USE & SETTING

Bite with your teeth.

This manual suits for next models

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