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OM-263230C
2022 − 01
Processes
Oxy-Fuel
Gas Regulation
Pressure Regulators
Specialty Gas
Inert
High Pressure
Liquid Cylinder
OWNER’S MANUAL
File: Accessory
TABLE OF CONTENTS
SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING . . . . . . . . . .
Welding, Cutting, Brazing, Heating Hazards . . . . . . . . . . . . . . . . . . . . . . . . .
California Proposition 65 Warnings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT TOUTE
Soudage, coupage, brasage, risques de surchauffe . . . . . . . . . . . . . . . . . .
Proposition californienne 65 Avertissements
Principales normes de sécurité
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 4 − HAZARDOUS EVENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 5 − ASSOCIATED HAZARDS OF RECOMPRESSING PURE
SECTION 6 − SPECIALTY GASES − SAFETY AND TECHNICAL
Information On Compressed Gases
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 7 − PRE-INSTALLATION PROCEDURES: REGULATORS . . . . . . .
SECTION 8 − INSTALLATION AND OPERATION . . . . . . . . . . . . . . . . . . . . . . . .
Installing Regulators On Cylinder Valves . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 9 − SYSTEM SHUTDOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 10 − PERFORMANCE CHARACTERISTICS
SECTION 11 − CARE AND MAINTENANCE
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 1
−
SAFETY PRECAUTIONS -
READ BEFORE USING
OXY FUEL 2022-01
Protect yourself and others from injury — read, follow, and save these important safety precautions and operating instructions.
1-1. Symbol Usage
DANGER! − Indicates a hazardous situation which, if not avoided, will result in death or serious injury. The possible hazards are shown in the adjoining symbols or explained in the text.
Indicates a hazardous situation which, if not avoided, could result in death or serious injury. The possible hazards are shown in the adjoining symbols or explained in the text.
NOTICE − Indicates statements not related to personal injury.
.
Indicates special instructions.
This group of symbols means
Warning! Watch Out! ELECTRIC
SHOCK, MOVING PARTS, and
HOT PARTS hazards. Consult symbols and related instructions below for necessary actions to avoid these hazards.
1-2. Welding, Cutting, Brazing, Heating Hazards
The symbols shown in this section are used throughout this manual to call attention to and identify possible hazards.
When you see the symbol, watch out, and follow the related instructions to avoid the hazard. The safety information given below is only a summary of the more complete safety information found in the Principal Safety Standards. Read and follow all Safety Standards.
Only qualified persons should install, operate, maintain, and repair this equipment. A qualified person is defined as one who, by possession of a recognized degree, certificate, or professional standing, or who by extensive knowledge, training and experience, has successfully demonstrated the ability to solve or resolve problems relating to the subject matter, the work, or the project and has received safety training to recognize and avoid the hazards involved.
During operation, keep everybody, especially children, away.
Do not use this equipment unless you are trained in its proper use or are under competent supervision. Follow the procedures described in this manual every time you use the equipment. Failure to follow these instructions can cause fire, explosion, asphyxiation, property damage, or personal injury.
This equipment must be used in accordance with all Federal,
State, and local regulations as well as DOT (Department of
Transportation) and CGA (Compressed Gas Association) regulations. Contact your gas supplier for more information on the proper use of compressed gases.
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.
In this document, the phrase “welding and cutting” also refers to other oxy-fuel operations like brazing and heating.
READ INSTRUCTIONS.
D Read and follow all labels and the Owner’s Manual carefully before installing, operating, or servicing equipment. Read the safety information at the beginning of the manual and in each section.
D Use only genuine replacement parts from the manufacturer.
D Perform installation, maintenance, and service according to the
Owner’s Manuals, industry standards, and national, state, and local codes.
HOT PARTS can burn.
D Do not touch hot parts bare handed.
D Allow cooling period before working on equipment.
D To handle hot parts, use proper tools and/or wear heavy, insulated welding gloves and clothing to prevent burns.
FUMES AND GASES can be hazardous.
Welding and cutting produces fumes and gases. Breathing these fumes and gases can be hazardous to your health.
D Keep your head out of the fumes. Do not breathe the fumes.
D Ventilate the work area and/or use local forced ventilation at the flame to remove welding and cutting fumes and gases. Some gases
(natural gas and acetylene) are lighter than air and will collect in high areas. Other gases (propane and butane) are heavier than air and will collect in low areas. Heavier-than-air gases are more difficult to diffuse and are more likely to accumulate. The recommended way to determine adequate ventilation is to sample for the composition and quantity of fumes and gases to which personnel are exposed.
D If ventilation is poor, wear an approved air-supplied respirator.
D Read and understand the Safety Data Sheets (SDSs) and the manufacturer’s instructions for adhesives, coatings, cleaners, consumables, coatings, cleaners, degreasers, fluxes, and metals.
D Work in a confined space only if it is well ventilated, or while wearing an air-supplied respirator. Always have a trained watchperson nearby. Welding and cutting fumes and gases can displace air and lower the oxygen level, causing injury or death. Be sure the breathing air is safe. Test atmospheres in confined areas for explosive and toxic gases before using oxy-fuel equipment.
D Do not weld or cut in locations near degreasing, cleaning, or spraying operations. The heat from welding or cutting flame can react with vapors to form highly toxic and irritating gases.
D Do not weld or cut on coated metals, such as galvanized, lead, or cadmium-plated steel unless the coating is removed from the affected area, the area is well ventilated, and while wearing an airsupplied respirator. The coatings and any metals containing these elements can give off toxic fumes if welded or cut.
D Do not weld or cut on sealed air conditioning or refrigeration systems unless all refrigerants have been removed from the system.
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BUILDUP OF GAS can injure or kill.
D Shut off compressed gas supply when not in use.
D Always ventilate confined spaces or use approved air-supplied respirator.
LIGHT RAYS can burn eyes and skin.
Light rays from the welding and cutting process produce intense visible and invisible (ultraviolet and infrared) rays that can burn eyes and skin.
Sparks fly off from the weld.
D Wear approved face protection fitted with a proper shade of filter lenses to protect your face and eyes from light rays and sparks when welding, cutting, or watching (see ANSI Z49.1 and Z87.1
listed in Safety Standards).
D Wear welding goggles, or wear welding helmet/welding faceshield over approved goggles/safety glasses with side shields.
D Use protective screens or barriers to protect others from flash, glare and sparks; warn others not to watch the welding or cutting.
D Wear body protection made from leather or flame-resistant clothing (FRC). Body protection includes oil-free clothing such as leather gloves, heavy shirt, cuffless trousers, high shoes, and a cap.
WELDING AND CUTTING can cause fire or explosion.
Welding and cutting on closed containers, such as tanks, drums, or pipes, can cause them to blow up. Sparks can fly off from the welding or cutting operations. The torch flame, flying sparks, hot workpiece, and hot equipment can cause fires and burns. Check and be sure the area is safe before doing any welding or cutting.
D Do not use this welding and cutting equipment with gases and pressures other than those for which it is intended. Oxygen is not flammable; however, the presence of pure oxygen will drastically increase the speed and force with which burning takes place. Oxygen must never be allowed to contact grease, oil, or other petroleum-based substances; therefore, be sure there is no oil or grease on the regulator, cylinder, valves, or equipment. Do not use petroleum-based pipe sealants. Do not use sealants on metal-to-metal seals, such as hose and CGA cylinder connections; use
PTFE-based sealant (PTFE tape) on pipe threads . Do not use or store near excessive heat (above 125 ° F/51.5
° C) or open flame.
Do not refer to oxygen as air and do not use oxygen as a substitute for compressed air. Do not use oxygen to clean clothes or work area, for ventilation, or to operate pneumatic tools. Open oxygen cylinder valves slowly. Be sure regulator adjusting handle is in the full out (off) position before opening oxygen cylinder valve.
D Inspect all equipment before use. Do not use damaged, defective, or improperly adjusted welding and cutting equipment. Make sure levers and valves work properly, threads on equipment are clean
(no grease or oil) and not deformed, gauges are intact and easy to read, regulator is clean and free of oil or dirt, and fittings are properly sized for the cylinder. Make sure hoses are clean (no grease or oil) and ferrules are properly installed so the fitting does not slip inside the hose. Be sure all connections are tight.
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D It is recommended that a reverse-flow check valve or a flashback arrestor be installed between the torch handle and the regulator.
Check valves do not prevent the propagation of a flame upstream (flashback) but are designed to prevent the unintentional backflow of gases into the cutting attachment, torch, hoses, or regulator which could cause an explosion or fire. A flashback arrestor can be installed on the torch handle instead of a check valve. Miller flashback arrestors have a reverse flow check valve and prevent the propagation of a flame upstream. If a flashback arrestor is installed, a check valve is not necessary. Using a flashback arrestor and a check valve can reduce gas flow and affect torch operation. To help prevent the reverse flow of gases, be sure the cylinders contain enough gas to complete the work.
D Understand the properties and applications of a gas, and how to safely use a gas, before placing it in service.
D Perform work only in an area with a fireproof floor (concrete). Do not heat concrete because it can expand and explode violently.
D Perform work on a fireproof surface. Use heat resistant shields to protect nearby walls and flooring.
D Do not use if grease or oil is present on equipment or if equipment is damaged. Have equipment cleaned/repaired by a qualified person.
D Do not open a cylinder valve quickly or the regulator can be damaged and cause a fire.
D Do not open acetylene cylinder valve more than 1 − 1/2 turns. (For all gases except acetylene, open cylinder valve fully to backseal the cylinder valve.) Keep cylinder wrench on the cylinder for quick shut-off.
D Do not slightly open or “crack” fuel cylinder valve to blow debris from the valve outlet. Remove the debris using nitrogen, air, or a clean, oil-free rag.
D Always purge gas from the system before lighting torch. Purge gas in a well-ventilated area and away from flame or sparks.
D Keep torch flame or sparks away from cylinder, regulator, and gas hose.
D Use only the gases recommended by the manufacturer of the oxy-fuel equipment being used.
D Never light a torch with matches or a lighter. Always use a striker.
D Do not use acetylene above 15 psi (103 kPa) flowing. It is acceptable to use acetylene regulators that indicate a static pressure up to 22 psi (151 kPa).
D Do not withdraw acetylene from a cylinder at a rate exceeding 1/7 of the cylinder capacity per hour (50 SCFH for a 350 ft
70 ° F is 75 SCFH (2124 lph).
3 cylinder).
Maximum withdrawal rate for a half-full 100 lb propane cylinder at
D When required flows (SCFH) exceed the recommended withdrawal rate from one cylinder, then additional cylinders must be manifolded to provide safe and efficient operation.
D When using liquid oxygen, tips may require greater gas volume than a single cylinder is capable of producing. External evaporators or manifolding multiple cylinders may be necessary to supply sufficient gas flows.
D Do not use long gas hoses or hoses with multiple connections because they restrict gas flow and reduce gas pressure. These conditions can cause backfires and flashbacks, and reduce equipment efficiency.
D Do not use torch if you smell gas. Check oxy-fuel system for leaks with an approved leak detection solution or leak detector. Never test for gas leaks with a flame.
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D Remove all flammables within 35 ft (10.7 m) of the welding or cutting operation. If this is not possible, tightly cover them with approved covers.
D Do not weld or cut where flying sparks can strike flammable material.
D Protect yourself and others from flying sparks and hot metal.
D Be alert that welding and cutting sparks and hot materials from welding and cutting can easily go through small cracks and openings to adjacent areas.
D Watch for fire, and keep a fire extinguisher nearby.
D Be aware that welding or cutting on a ceiling, floor, bulkhead, or partition can cause fire on the hidden side.
D Do not cut or weld on tire rims or wheels. Tires can explode if heated. Repaired rims and wheels can fail. See OSHA 29 CFR
1910.177 listed in Safety Standards.
D Do not weld or cut on containers that have held combustibles, or on closed containers such as tanks, drums, or pipes unless they are properly prepared according to AWS F4.1 (see Safety Standards).
D Do not weld or cut where the atmosphere can contain flammable dust, gas, or liquid vapors (such as gasoline).
D Wear body protection made from leather or flame-resistant clothing (FRC). Body protection includes oil-free clothing such as leather gloves, heavy shirt, cuffless trousers, high shoes, and a cap.
D Do not use fuel gases to clean clothes or work area.
D Remove any combustibles, such as a butane lighter or matches, from your person before doing any welding or cutting.
D After completion of work, inspect area to ensure it is free of sparks,
D glowing embers, and flames.
Follow requirements in OSHA 1910.252 (a) (2) (iv) and NFPA 51B for hot work and have a fire watcher and extinguisher nearby.
CYLINDERS can explode if damaged.
Compressed gas cylinders contain gas under high pressure. If damaged, a cylinder can explode. Since gas cylinders are normally part of the welding or cutting process, be sure to treat them carefully.
D Protect compressed gas cylinders from excessive heat, mechanical shocks, physical damage, slag, open flames, and sparks.
D Install cylinders in an upright position by securing to a stationary support or cylinder rack to prevent falling or tipping. Do not lay acetylene cylinders on their sides or acetone will flow out of the cylinder and damage the equipment.
D Keep cylinders away from any arc welding, cutting, or other electrical circuits.
D Never drape a welding or cutting torch over a gas cylinder.
D Never weld or cut on a pressurized cylinder − explosion will result.
D Use only correct compressed gas cylinders, regulators, hoses, and fittings designed for the specific application; maintain them and associated parts in good condition. Do not use compressed gas cylinder unless an approved gas regulator is attached to the gas valve.
D Turn face away from valve outlet when opening cylinder valve. Do not stand in front of or behind the regulator when opening the valve.
D Keep protective cap in place over valve except when cylinder is in use or connected for use.
D Use the proper equipment, correct procedures, and sufficient number of persons to lift, move, and transport cylinders.
D Store compressed gas and oxygen cylinders in separate locations.
D Store empty cylinders with valves closed and caps in place.
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D Do not modify or repair cylinders or valves. Store leaking acetylene cylinders outdoors in a safe area. Identify leaking cylinders and return them to the supplier.
D Dispose of used disposable cylinders according to the manufacturer’s recommendations. Do not throw cylinders in fire.
D Follow instructions provided by the gas supplier and on compressed gas cylinders, associated equipment, and in Compressed
Gas Association (CGA) publication P-1 listed in Safety Standards.
FLYING METAL or DIRT can injure eyes.
D Welding, cutting, chipping, wire brushing, and grinding cause sparks and flying metal.
D Wear welding goggles, or wear welding helmet/welding faceshield over approved goggles/safety glasses with side shields.
1-3. California Proposition 65 Warnings
WARNING: This product can expose you to chemicals including lead, which are known to the state of California to cause cancer and birth defects or other reproductive harm.
For more information, go to www.P65Warnings.ca.gov.
1-4. Principal Safety Standards
Safety in Welding, Cutting, and Allied Processes, American Welding Society standard ANSI Standard Z49.1. Website: www.aws.org.
Safe Practices for the Preparation of Containers and Piping for Welding and Cutting, American Welding Society Standard AWS F4.1. Website: www.aws.org.
Recommended Practices for Safe Oxyfuel Gas Cutting Torch Operation,
American Welding Society Standard C4.2/C4.2M, and Recommended
Practices for Safe Oxyfuel Gas Heating Torch Operation, American
Welding Society Standard C4.3/C4.3M. Website: www.aws.org.
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, from Compressed Gas Association. Website:www.cganet.com.
Acetylene, CGA Pamphlet G-1 from Compressed Gas Association.
Website:www.cganet.com).
Safety in Welding, Cutting, and Allied Processes, CSA Standard W117.2
from Canadian Standards Association.
Website: www.csagroup.org.
Safe Practice For Occupational And Educational Eye And Face Protection, ANSI Standard Z87.1 from American National Standards Institute.
Website: www.ansi.org.
Standard for Fire Prevention During Welding, Cutting, and Other Hot
Work, NFPA Standard 51B from National Fire Protection Association.
Website: www.nfpa.org.
OSHA Occupational Safety and Health Standards for General Industry , Title
29, Code of Federal Regulations (CFR), Part 1910.177 Subpart N, Part
1910 Subpart Q, and Part 1926, Subpart J. Website: www.osha.gov.
OSHA Important Note Regarding the ACGIH TLV, Policy Statement on the Uses of TLVs and BEIs.
Website: www.osha.gov.
Applications Manual for the Revised NIOSH Lifting Equation from the
National Institute for Occupational Safety and Health (NIOSH). Website: www.cdc.gov/NIOSH.
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SECTION 2
−
CONSIGNES DE SÉCURITÉ
−
LIRE
AVANT TOUTE UTILISATION
OXY FUEL 2022-01_fre
Pour écarter les risques de blessure pour vous − même et pour autrui — lire, appliquer et ranger en lieu sûr ces consignes relatives aux précautions de sécurité et au mode opératoire.
2-1. Symboles utilisés
DANGER! − Indique une situation dangereuse qui si on l’évite pas peut donner la mort ou des blessures graves.
Les dangers possibles sont montrés par les symboles joints ou sont expliqués dans le texte.
Indique une situation dangereuse qui si on l’évite pas peut donner la mort ou des blessures graves. Les dangers possibles sont montrés par les symboles joints ou sont expliqués dans le texte.
AVIS − Indique des déclarations pas en relation avec des blessures personnelles.
.
Indique des instructions spécifiques.
Ce groupe de symboles veut dire
Avertissement! Attention! DAN-
GER DE CHOC ELECTRIQUE,
PIECES EN MOUVEMENT, et
PIECES CHAUDES. Reportez − vous aux symboles et aux directives ci − dessous afin de connaître les mesures à prendre pour éviter tout danger.
2-2. Soudage, coupage, brasage, risques de surchauffe
Les symboles représentés ci-dessous sont utilisés dans ce manuel pour attirer l’attention et identifier les dangers possibles. En présence de l’un de ces symboles, prendre garde et suivre les instructions afférentes pour éviter tout risque. Les consignes de sécurité présentées ci − après ne font que résumer les informations contenues dans les principales normes de sécurité. Lire et observer toutes les normes de sécurité.
L’installation, l’utilisation, l’entretien et les réparations ne doivent être confiés qu’à des personnes qualifiées. Une personne qualifiée est définie comme celle qui, par la possession d’un diplôme reconnu, d’un certificat ou d’un statut professionnel, ou qui, par une connaissance, une formation et une expérience approfondies, a démontré avec succès sa capacité à résoudre les problèmes liés à la tâche, le travail ou le projet et a reçu une formation en sécurité afin de reconnaître et d’éviter les risques inhérents.
Pendant le fonctionnement, maintenir à distance toutes les personnes, notamment les enfants de l’appareil.
Ne pas utiliser cet équipement à moins d’avoir été formé à son usage adéquat ou d’être sous la supervision d’une personne qualifiée. Respecter les procédures décrites dans le présent manuel pour toute utilisation de l’équipement. Le non − re-
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spect de ces procédures peut causer des risques d’incendie, d’explosion, d’asphyxie, de dommages matériels ou de blessures. Cet équipement doit être utilisé dans le respect de toutes les réglementations fédérales, provinciales et municipales, ainsi que celles du Ministère des Transports et de l’association CGA (Compressed Gas Association). Pour plus d’information sur l’utilisation adéquate de gaz comprimé, communiquez avec votre fournisseur de gaz.
.
Dans ce document, l’expression « soudage et coupage » fait également référence à d’autres opérations oxy − combustibles comme le brasage et le chauffage’
LIRE LES INSTRUCTIONS.
D Lire et appliquer les instructions sur les étiquettes et le Mode d’emploi avant l’installation, l’utilisation ou l’entretien de l’appareil.
Lire les informations de sécurité au début du manuel et dans chaque section.
D N’utiliser que des pièces de remplacement provenant du fabricant.
D Effectuer l’installation, l’entretien et toute intervention selon les manuels d’utilisateurs, les normes nationales, provinciales et de l’industrie, ainsi que les codes municipaux.
LES PIÈCES CHAUDES peuvent provoquer des brûlures.
D Ne pas toucher des parties chaudes à mains nues.
D Laissez refroidir avant d’intervenir sur l’équipement.
D Ne pas toucher aux pièces chaudes, utiliser les outils recommandés et porter des gants de soudage et des vêtements épais pour éviter les brûlures.
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LES FUMÉES ET LES GAZ peuvent
être dangereux.
Le soudage et le coupage produisent des vapeurs et des gaz. Respirer ces fumées et ces gaz peut être dangereux pour votre santé.
D Garder la tête à l’extérieur des vapeurs et des fumées et ne pas les respirer.
D Ventiler le lieu de travail ou avoir recours à une ventilation aspirante installée près de la flamme pour évacuer les vapeurs et les gaz de soudage et de coupe. Certains gaz (gaz naturel et de l’acétylène) sont plus légers que l’air et s’accumulent en hauteur. D’autres gaz
(propane et butane) sont plus lourds que l’air et s’accumulent à un niveau inférieur. Les gaz plus lourds que l’air sont plus difficiles à diffuser et sont plus susceptibles de s’accumuler. Pour déterminer la bonne ventilation, il est recommandé de procéder à un prélèvement pour la composition et la quantité de fumées et de gaz auxquels est exposé le personnel.
D Si la ventilation est médiocre, porter un respirateur à adduction d’air approuvé.
D Lire et comprendre les fiches de données de sécurité et les instructions du fabricant concernant les adhésifs, les revêtements, les nettoyants, les consommables, les produits de refroidissement, les dégraisseurs, les flux et les métaux.
D Ne travailler dans un espace confiné que s’il est bien ventilé, ou en portant un appareil respiratoire à adduction d’air pur. Ne soudez pas ou ne coupez pas près de zones où sont effectuées des opérations de dégraissage, nettoyage ou pulvérisation. Les vapeurs de soudage et de coupage peuvent déplacer de l’air et abaisser le niveau d’oxygène, cause de lésion ou de mort.
Assurez − vous que l’air ambiant est sain pour la santé. Tester les atmosphères dans les espaces clos pour les gaz explosifs et toxiques avant d’utiliser l’équipement d’oxycoupage.
D Ne soudez pas ou ne coupez pas près de zones où sont effectuées des opérations de dégraissage, nettoyage ou pulvérisation. La chaleur et les rayons d’arc peuvent réagir avec les vapeurs et former des gaz hautement toxiques et irritants.
D Ne soudez pas ou ne coupez pas des métaux enrobés tels que des métaux galvanisés, contenant du plomb ou de l’acier plaqué au cadmium, à moins que l’enrobage ne soit ôté de la surface de soudage, que l’endroit où vous travaillez ne soit bien ventilé, ou, si nécessaire, que vous ne portiez un respirateur alimenté en air.
Les revêtements et tous les métaux renfermant ces éléments peuvent dégager des fumées toxiques en cas de soudage.
D Ne pas souder ou couper sur des systèmes de climatisation ou de réfrigération fermés à moins que tous les réfrigérants aient été retirés du système.
LES ACCUMULATIONS DE GAZ risquent de provoquer des blessures ou même la mort.
D Fermer l’alimentation du gaz comprimé en cas de non utilisation.
D Veiller toujours à bien aérer les espaces confinés ou se servir d’un rateur d’adduction d’air homologué.
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LES RAYONS DE L’ARC peuvent provoquer des brûlures dans les yeux et sur la peau.
Les rayons d’arc issus des procédés de soudage et de coupage produisent des rayons visibles et invisibles intenses (ultraviolets et infrarouges) qui peuvent entraîner des brûlures aux yeux et à la peau.
Des étincelles sont projetées pendant le soudage.
D Portez un casque de soudage approuvé muni de verres filtrants appropriés pour protéger visage et yeux contre les rayons et les
étincelles d’arc pendant le soudage, le coupage ou la surveillance (voir ANSI Z49.1 et Z87.1 énuméré dans les Normes de
Sécurité).
D Porter des lunettes de soudage, ou porter un écran facial/casque de soudage sur des lunettes/lunettes de sécurité approuvées avec écrans de protection latéraux.
D Avoir recours à des écrans protecteurs ou à des rideaux pour protéger les autres contre les rayonnements les éblouissements et les étincelles ; prévenir toute personne sur les lieux de ne pas regarder l’arc.
D Porter une protection corporelle en cuir ou des vêtements ignifuges (FRC). La protection du corps comporte des vêtements sans huile, comme p. ex., des gants de cuir, une chemise solide, des pantalons sans revers, des chaussures hautes et une casquette.
Le SOUDAGE ET le COUPAGE présentent un risq d’incendie ou d’explosion.
Les récipients fermés, comme les réservoirs, les fûts ou les tuyaux, peuvent éclater lorsqu’ils sont soumis à des travaux de soudure ou de coupage. De tels travaux peuvent produire des étincelles. La flamme de la torche, les étincelles, les pièces de travail chauffées, et les
équipements chauds peuvent causer des brûlures et des incendies.
S’assurer que le lieu ne présente pas de danger avant d’effectuer le soudage ou la coupe.
D Ne pas utiliser cet équipement de soudage et de coupage avec des gaz et des pressions autres que celles pour lesquelles il est prévu.
L’oxygène est pas inflammable, cependant, la présence d’oxygène pur augmentera considérablement la vitesse et la force avec laquelle la combustion a lieu. L’oxygène ne doit jamais être autorisé à entrer en contact avec de la graisse, de l’huile ou d’autres substances à base de pétrole. Par conséquent, assurez − vous qu’il n’y a pas d’huile ou de graisse sur le régulateur, le cylindre, les valves ou l’équipement. Ne pas utiliser de produits d’étanchéité de tuyaux à base de pétrole. Ne pas utiliser de produits d’étanchéité sur les joints métal − métal, tels que les raccords de tuyaux et de cylindres CGA; utiliser un produit d’étanchéité à base de PTFE (ruban PTFE) sur les filetages des tuyaux. Ne pas utiliser ou entreposer à proximité d’une chaleur excessive (supérieure à 125 ° F/ 51,5 ° C) ou d’une flamme ouverte. Ne pas appeler l’oxygène de l’air et ne pas utiliser l’oxygène comme un substitut à l’air comprimé. Ne pas utiliser l’oxygène pour nettoyer les vêtements ou la zone de travail, pour la ventilation, ou pour faire fonctionner des outils pneumatiques. Ouvrir les valves de bouteille d’oxygène lentement. Inspecter tous les équipements avant utilisation.
OM-280758 Page 4
D Inspecter tous les équipements avant utilisation. Ne pas utiliser des équipements de soudage et de coupage endommagés, défectueux ou mal réglés. S’assurer que les leviers et les robinets fonctionnent bien, que les filets d’équipements sont propres (aucune graisse ou huile) et inaltérés, que les cadrans sont intacts et faciles à lire, que les régulateurs sont propres (sans saleté ou huile), et que les raccords sont de bonne taille pour la bouteille.
S’assurer que les flexibles sont propres (sans graisse ou huile) et que les bagues d’extrémité sont adéquatement installées pour que les connecteurs ne glissent pas à l’intérieur des boyaux. S’assurer que tous les raccords sont serrés.
D L’installation d’un clapet anti − retour ou d’un intercepteur de rentrée de flamme entre la poignée de la torche et le régulateur est recommandée. Les clapets anti − retour ne font pas obstacle à la propagation d’une flamme en amont (retour de flamme), mais sont conçus pour empêcher le reflux non intentionnel des gaz dans l’équipement de coupe, torche, tuyaux ou un régulateur, qui pourrait provoquer une explosion ou d’incendie. Un intercepteur de rentrée de flamme peut être installé sur la poignée de la torche au lieu d’un clapet anti − retour. Les pare − flashback Miller ont un clapet anti − retour d’écoulement inverse et empêchent la propagation d’une flamme en amont. Si un intercepteur de rentrée de flamme est installé, un clapet anti − retour n’est pas requis. L’utilisation d’un intercepteur de rentrée de flamme et d’un clapet antiretour peut réduire le débit de gaz et affecter le fonctionnement de la torche. Pour aider à prévenir le débit de gaz en sens inverse, s’assurer que les bouteilles d’alimentation contiennent suffisamment de gaz pour faire le travail au complet.
D Bien s’assurer de comprendre les propriétés et les applications d’un gaz, et comment l’utiliser en toute sécurité avant de le mettre en service.
D Ne travailler que dans des lieux où le plancher est à l’épreuve du feu (béton). Ne pas chauffer le béton, car c’est un matériau expansible qui peut exploser violemment.
D Effectuer des travaux sur une surface anti − feu. Utiliser des boucliers résistants à la chaleur pour protéger les murs et les planchers à proximité.
D Ne pas l’utiliser si de la graisse ou de l’huile est présente sur l’équipement ou si l’équipement est endommagé. Faire nettoyer/réparer l’équipement par une personne qualifiée.
D Ne pas ouvrir rapidement le robinet de bouteille sinon le régulateur pourrait être endommagé et causer un incendie.
D Ne pas ouvrir la vanne de la bouteille d’acétylène plus de 1 − 1/2 de tour. (Pour tous les gaz, à l’exception de l’acétylène, ouvrir la valve de la bouteille entièrement). Garder la clé sur le cylindre pour une fermeture rapide.
D Ne pas entrouvrir la valve de la bouteille de carburant pour souffler les débris de la sortie de la valve. Retirer les débris à l’aide d’azote, d’air ou d’un chiffon propre et exempt d’huile.
D Toujours purger le gaz du système avant d’allumer la torche. Purger le gaz dans un endroit bien aéré et à l’abri des flammes ou des
étincelles.
D Garder la flamme ou les étincelles de la torche à l’écart de la bouteille, du régulateur et du tuyau de gaz.
OM-280758 Page 5
D Utiliser uniquement les gaz recommandés par le fabricant de l’équipement d’oxycoupage utilisé.
D Ne jamais allumer une torche avec des allumettes ou un briquet.
Toujours utiliser un dispositif à friction.
D Ne pas utiliser de l’acétylène au − dessus de 15 psi (103 kPa). Il est acceptable d’utiliser des régulateurs d’acétylène qui indiquent une pression statique allant jusqu’à 22 psi (151 kPa).
D Ne pas retirer l’acétylène d’un cylindre à un taux supérieur à 1/7 de la capacité du cylindre par heure (50 SCFH pour un cylindre de 350 pi3). Le taux de prélèvement maximal pour un cylindre de propane
à moitié plein de 100 lb à 70 ° F est de 75 SCFH (2 124 l/h).
D Lorsque les débits requis (SCFH) dépassent le taux de prélèvement recommandé d’un cylindre, des cylindres supplémentaires devront être raccordés pour assurer un fonctionnement sécuritaire et efficace.
D Lors de l’utilisation d’oxygène liquide, les becs pourront nécessiter un volume de gaz plus important qu’un seul cylindre n’est pas en mesure de produire. Des évaporateurs externes ou des cylindres multiples pourront être nécessaires pour fournir des débits de gaz suffisants.
D Ne pas utiliser de longs tuyaux de gaz ou des tuyaux à connexions multiples, car ceux − ci limitent le débit de gaz et réduisent la pression de gaz. Ces conditions peuvent provoquer des retours de flamme et des retours de courant de soudage, et réduire l’efficacité de l’équipement.
D S’il y a odeur de gaz, n’utilisez pas la torche. Contrôler le système de gaz oxygéné pour détecter toute fuite à l’aide d’une solution de détection de fuites ou d’un détecteur de fuites approuvé. Ne jamais tester les fuites de gaz avec une flamme.
D Écarter tout produit inflammable situé à moins de 35 pieds (10,7 m) de l’arc de soudage ou de coupage. Si cela n’est pas possible, bien les recouvrir en utilisant des bâches approuvées.
D Ne soudez pas ou ne coupez pas dans un endroit où des étincelles pourraient atteindre des matières inflammables.
D Se protéger et d’autres personnes de la projection d’étincelles et de métal chaud.
D Assurez − vous qu’aucune étincelle ni matière chaude provenant du soudage ou du coupage ne peut se glisser dans de petites fissures ou tomber dans d’autres pièces contiguës.
D Afin d’éliminer tout risque de feu, soyez vigilant et gardez toujours un extincteur à portée de main.
D Si vous soudez ou coupez sur un plafond, un plancher ou une cloison, soyez conscient que cela peut entraîner un incendie de l’autre côté.
D Ne pas couper ni souder sur les jantes de pneus ou les roues. Les pneus peuvent exploser s’ils sont chauffés. Les jantes et les roues réparées peuvent avoir une défectuosité. Vous reporter à la liste
OSHA 29 CFR 1910.177 dans les normes de sécurité.
D N’effectuez pas de soudage ou de coupage sur des conteneurs ayant stocké des combustibles ou sur des conteneurs fermés tels que des réservoirs, tambours, ou conduites, à moins qu’ils n’aient
été préparés correctement conformément à AWS F4.1 (voir les
Normes de Sécurité).
OM-280758 Page 6
D Ne soudez pas ou ne coupez pas si l’air ambiant est chargé de particules, gaz, ou vapeurs inflammables (vapeur d’essence, par exemple).
D Porter une protection corporelle en cuir ou des vêtements ignifuges (FRC). La protection du corps comporte des vêtements sans huile, comme p. ex., des gants de cuir, une chemise solide, des pantalons sans revers, des chaussures hautes et une casquette.
D Ne pas utiliser de gaz carburant pour nettoyer les vêtements ou la zone de travail.
D Avant le soudage ou coupage, retirez tout combustible de vos poches, par exemple un briquet au butane ou des allumettes.
D Une fois le travail achevé, assurez − vous qu’il ne reste aucune trace d’étincelles incandescentes ni de flammes.
D Suivre les consignes de OSHA 1910.252 (a) (2) (iv) et de NFPA
51B pour travaux de soudage et prévoir un détecteur d’incendie et un extincteur à proximité.
LES BOUTEILLES peuvent exploser si elles sont endommagées.
Les bouteilles de gaz comprimé sont sous haute pression. Une bouteille endommagée peut exploser. Du fait que les bouteilles de gaz font normalement partie du procédé de soudage, les manipuler avec précaution.
D Protégez les bouteilles de gaz comprimé contre la chaleur excessive, les chocs, les dommages physiques, le laitier, les flammes nues et les étincelles.
D Placer les bouteilles debout en les fixant dans un support stationnaire ou dans un porte − bouteilles pour les empêcher de tomber ou de se renverser. Ne pas poser les bouteilles d’acétylène sur le côté, sinon de l’acétone coulera de la bouteille et endommagera l’équipement.
D Les bouteilles ne doivent pas être près de la zone de soudage à l’arc ou de coupage ni de tout autre circuit électrique.
D Ne placez jamais une torche de soudage ou de coupage sur une bouteille de gaz.
D Ne soudez ou coupez jamais sur une bouteille pressurisée – une explosion en résulterait.
D Utiliser seulement des bouteilles de gaz comprimé, régulateurs, tuyaux et raccords convenables pour cette application spécifique ; les maintenir ainsi que les éléments associés en bon état. Ne pas utiliser de bouteille de gaz comprimé, à moins qu’un régulateur de gaz approuvé soit fixé à la valve de gaz.
D Ne pas tenir la tête en face de la sortie en ouvrant la soupape de la bouteille. Ne pas se tenir devant ou derrière le régulateur lors de l’ouverture de la vanne.
D Maintenir le chapeau de protection sur la soupape, sauf en cas d’utilisation ou de branchement de la bouteille.
D Utiliser le bon équipement, les bonnes procédures et suffisamment de personnes pour soulever, déplacer et transporter les bouteilles.
D Stocker les bouteilles de gaz et d’oxygène comprimé dans des endroits séparés.
D Stocker les bouteilles vides avec les valves fermées et les bouchons en place.
D Ne pas modifier ou réparer les bouteilles ou les valves. Stocker les bouteilles d’acétylène qui fuient à l’extérieur dans une zone sûre.
Identifier les bouteilles qui fuient et les retourner au fournisseur.
OM-280758 Page 7
D Éliminer les bouteilles à usage unique usagées selon les recommandations du fabricant. Ne pas jeter les bouteilles dans le feu.
D Lire et suivre les instructions sur les bouteilles de gaz comprimé, l’équipement connexe et le dépliant P-1 de la CGA (Compressed
Gas Association) mentionné dans les principales normes de sécurité.
DES PIECES DE METAL ou DES SALETES peuvent provoquer des blessures dans les yeux.
D Le soudage, l’écaillement, le passage de la pièce à la brosse en fil de fer, et le meulage génèrent des étincelles et des particules métalliques volantes.
D Porter des lunettes de soudage, ou porter un écran facial/ casque de soudage sur des lunettes/lunettes de sécurité approuvées avec écrans de protection latéraux.
2-3. Proposition californienne 65 Avertissements
AVERTISSEMENT : ce produit peut vous exposer à des produits chimiques tels que le plomb, reconnus par l’État de
Californie comme cancérigènes et sources de malformations ou d’autres troubles de la reproduction.
Pour plus d’informations, consulter www.P65Warnings.ca.gov.
2-4. Principales normes de sécurité
Safety in Welding, Cutting, and Allied Processes, American Welding Society standard ANSI Standard Z49.1. Website: www.aws.org.
Safe Practices for the Preparation of Containers and Piping for Welding and Cutting, American Welding Society Standard AWS F4.1. Website: www.aws.org.
Recommended Practices for Safe Oxyfuel Gas Cutting Torch Operation,
American Welding Society Standard C4.2/C4.2M, and Recommended
Practices for Safe Oxyfuel Gas Heating Torch Operation, American
Welding Society Standard C4.3/C4.3M. Website: www.aws.org.
Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, from Compressed Gas Association. Website:www.cganet.com.
Acetylene, CGA Pamphlet G-1 from Compressed Gas Association.
Website:www.cganet.com).
Safety in Welding, Cutting, and Allied Processes, CSA Standard W117.2
from Canadian Standards Association. Website: www.csagroup.org.
Safe Practice For Occupational And Educational Eye And Face Protection, ANSI Standard Z87.1 from American National Standards Institute.
Website: www.ansi.org.
Standard for Fire Prevention During Welding, Cutting, and Other Hot
Work, NFPA Standard 51B from National Fire Protection Association.
Website: www.nfpa.org.
OSHA Occupational Safety and Health Standards for General Industry , Title
29, Code of Federal Regulations (CFR), Part 1910.177 Subpart N, Part
1910 Subpart Q, and Part 1926, Subpart J. Website: www.osha.gov.
OSHA Important Note Regarding the ACGIH TLV, Policy Statement on the Uses of TLVs and BEIs.
Website: www.osha.gov.
Applications Manual for the Revised NIOSH Lifting Equation from the
National Institute for Occupational Safety and Health (NIOSH). Website: www.cdc.gov/NIOSH.
OM-280758 Page 8
SECTION 3
−
INTRODUCTION
Inspect all equipment before use. Do not use damaged, defective, or improperly adjusted welding and cutting equipment.
Make sure levers and valves work properly, threads on equipment are clean (no grease or oil) and not deformed, gauges are intact and easy to read, regulator is clean and free of oil or dirt, and fittings are properly sized for the cylinder. Make sure hoses are clean (no grease or oil) and ferrules are properly installed so the fitting does not slip inside the hose. Be sure all connections are tight and there are no leaks in the system.
This booklet offers basic information regarding Miller|Smith pressure regulators. Given reasonable care, the regulators will provide trouble-free use for many years.
SECTION 4
−
HAZARDOUS EVENTS
The following events are very hazardous and can occur in any oxy-fuel system. It is important to understand these hazards and know how to prevent them.
Backfire: The return of the flame into the torch, usually accompanied by a popping sound. The flame may be extinguished or it may re-appear at the tip end.
Sustained Backfire: The return of the flame into the torch that continues to burn inside the torch with a hissing or squealing sound.
Flashback: The return of a flame into and through the torch or into the hose. In some instances it can reach the regulator and even enter the cylinder. This is generally caused by the mixing of the oxygen and fuel gas in the system. This is a very dangerous situation that can cause an explosion any-
where in the system. This is why purging is so important (see Section 8).
SECTION 5
−
ASSOCIATED HAZARDS OF
RECOMPRESSING PURE OXYGEN
Open oxygen cylinder valves slowly. Opening an oxygen cylinder valve quickly can cause a fire or explosion. Be sure regulator adjusting handle is in the full out (off) position before opening an oxygen cylinder valve.
Recompressing high pressure oxygen in a low pressure cavity may create heat, resulting in combustion. For combustion to occur, oxygen, fuel, and kindling temperatures must be present. All of these components may be present when oxygen is recompressed by opening the tank valve too quickly.
OM-263230 Page 9
Oxygen: High purity oxygen accelerates the rate of combustion, increases heat output, and lowers the combustible point at which various materials will burn.
Fuel: The fuel for combustion may be the regulator itself if enough heat is produced to reach the kindling temperature of the regulator’s components.
Kindling Temperatures: Enough heat may be generated to ignite the regulator components by the friction created when recompressing high-pressure oxygen. This heat is known as the heat of recompression.
If an internal fire or flashback occurs (indicated by a whistling sound or inverted flame), do the following:
D Turn off the torch oxygen valve immediately.
D Turn off the torch fuel valve.
D Turn off the oxygen cylinder valve.
D Turn off the fuel gas cylinder valve.
Do not relight the torch until the equipment has cooled to the touch and the flashback cause has been determined and corrected.
SECTION 6
−
SPECIALTY GASES
−
SAFETY AND
TECHNICAL INFORMATION
6-1. Information On Compressed Gases
.
Contact your equipment supplier if you have a requirement or concern not covered in the booklet .
Gaseous and liquefied compressed gases may be categorized in the following classifications: flammable, oxidant, corrosive, inert, and toxic. Because these products may also be gases or liquids under pressure, the hazards accompanying high pressure and low temperature may also be present. The properties of a gas place it in one or a number of categories.
Certain basic rules must be followed in order to handle specialty gases safely:
D Know the hazards associated with the gas.
D Know and understand the physical and chemical properties of the gas.
D Observe the necessary general precautions to be taken in the use of specialty gases and the precautions specific to the gas.
In addition to the safe handling and storage procedures presented in this section, the Compressed Gas Association and the Department of Transportation provide detailed gas safety information and regulations.
6-2. Gas Classifications
A.
Flammable
Flammable gases, when mixed with air, oxygen or other oxidants, burn or explode upon ignition, depending upon the degree of confinement. Each flammable gas has a gas − in − oxidant concentration range within the limits of which the gas may be ignited. Flammable ranges are expressed in
OM-263230 Page 10
terms of air at ambient temperature and atmospheric pressure. A change in temperature, pressure, or oxidant concentration may vary the flammable range considerably. Mixtures above and below the flammable range do not ignite. As a precaution in handling flammables, care must be taken to eliminate all possible sources of ignition through the proper design of facilities, the installation of approved electrical systems, and the restriction of smoking and use of open flames. An explosimeter should be used to determine the existence of a flammable mixture in areas of suspected leakage.
B.
Oxidant
A number of gases, although nonflammable, may initiate and support combustion. Materials that burn in air burn more vigorously or even explosively in oxygen and certain other oxidants. All possible sources of ignition must be eliminated when handling oxidants. Oxidants must not be stored with combustible materials. Oil, grease, or other readily combustible substances must not come in contact with cylinders or equipment used in oxidant service.
C.
Corrosive
Corrosives are those products that erode and deteriorate materials with which they come in contact; such as metals, fabrics, and human tissue.
Some gases, although not corrosive in their anhydrous form, become corrosive in the presence of water. Special care must be taken when selecting the proper construction materials for equipment in which corrosives are handled. Gases that do not cause deterioration but induce inflammation of human tissue are irritants. Inflammation of the tissue may occur after immediate, prolonged or repeated contact with the irritant.
Protective clothing and equipment must be used to minimize exposure to corrosive or irritating materials.
D.
Inert
Gases that at ordinary temperatures and pressure do not react with other materials are classified as inert. If released in a confined area, inert gases may displace the oxygen content of the air below the level necessary to sustain life. Asphyxiation, therefore, is the hazard associated with inert products. Adequate ventilation and monitoring of the oxygen content of confined areas minimizes the possibility of asphyxiation.
E.
Toxic
Toxic materials are those substances that may chemically produce injurious or lethal effects. The degree of toxicity and the effects vary with the compound. Some gases are especially harmful because they do not provide adequate warning of their presence (by color, odor, etc.) at low levels of concentration. Also, some products that are nontoxic in themselves may react with certain chemicals or decompose at elevated temperatures to produce toxic materials. Adequate ventilation, protective clothing, and suitable breathing equipment must be used to minimize exposure.
F.
High Pressure
Specialty gases are compressed to pressures up to 6000 psig (4137 kPa). A sudden release of pressure may cause serious damage to personnel and equipment by propelling a cylinder or whipping a line. Factors that must be considered when choosing construction materials and designing gas − handling systems are the temperature, the pressure of the gas, and the possibility of pressure buildup in the system.
OM-263230 Page 11
SECTION 7
−
PRE-INSTALLATION PROCEDURES:
REGULATORS
Do not use this equipment unless you are trained in its proper use or are under competent supervision. Follow the procedures described in this booklet every time you use the equipment. Failure to follow these instructions may cause fire, explosion, asphyxiation, property damage, or personal injury.
This equipment must be used in accordance with all Federal,
State, and local regulations as well as DOT (Department of
Transportation) and CGA (Compressed Gas Association) regulations. Contact your gas supplier for more information on the proper use of compressed gases.
Regulators must be used only with the gases and pressures for which they are designed. Consult a safety data sheet (SDS) for gases used to determine compatibility of gases and regulator components (available from your gas supplier).
1.
Check the designed pressure rating of the regulator (labeled or stamped on the regulator body) and the scale range of the pressure gauges. The pressure ratings must be adequate for the cylinder pressure and the operating pressure.
2.
Verify the materials used in the construction of the regulator are compatible with the intended gas service.
3.
Verify the regulator inlet connection is compatible with the cylinder outlet valve connections.
4.
Install a check valve purge assembly and pressure relief devices in the operating system as required.
5.
Do not interchange pressure regulators or other equipment that was used with different gases unless you are sure the gases are compatible.
6.
Do not use regulator equipment for oxygen service that has been in other gas service.
7.
If the regulator has an open port, that port must be assembled for its intended use.
8.
If gauges are used with the regulator and the regulator is UL listed, the following requirements apply:
A. Gauges over 1,000 psi (6895 kPa) shall be UL listed per UL standard 404.
B. Gauges under 1,000 psi (6895 kPa) shall be UL recognized per
UL standard 252.
9.
Do not use pressure regulators in ambient temperatures below 0 ˚F
( − 18 ˚C) or above 140 ˚ F (60 ˚ C).
OM-263230 Page 12
SECTION 8
−
INSTALLATION AND OPERATION
Follow these steps to set up oxy-fuel equipment.
8-1. Installing Cylinders
Install cylinders in an upright position by securing to a stationary support or cylinder rack to prevent falling or tipping. Maintain a clear path from the cylinders to the work area.
Inspect equipment before use. Do not use if grease or oil is present on equipment or if equipment is damaged. Have equipment cleaned/repaired by a qualified person.
Do not slightly open or “crack” acetylene cylinder valve to blow debris from the valve outlet. Remove the debris using nitrogen, air, or a clean, oil-free rag.
1.
Remove the protective cap from the cylinder valve.
2.
For all cylinders except acetylene: Stand to one side or behind the valve. Open the cylinder valve slightly (cracking) for an instant and then close the valve. This will help clear the valve of any dust or dirt that may have collected. These particles can damage regulators or cause a fire or explosion. Direct the flow of gas away from people.
8-2. Installing Regulators On Cylinder Valves
Inspect equipment before use. Do not use if grease or oil is present on equipment or if equipment is damaged. Have equipment cleaned/repaired by a qualified person.
Do not handle oxygen regulators with oily hands and never apply oil to any part of an oxygen regulator.
Do not use lubricant or thread tape on cylinder fittings.
Select regulators with sufficient flow capacity. Be sure there are no restrictions that could impede gas flows (such as length and diameter of hoses).
NOTICE − Do not use cylinder adaptors to connect regulators to cylinders. Regulators have CGA connections (manufactured to standards of the Compressed Gas Association) which allow the regulator to only be installed on the appropriate cylinder valve for the intended gas.
Low Pressure Gauge
(Delivery)
High Pressure Gauge
(Supply)
Regulator Bonnet
Inlet (Tail Piece)
Connection
Adjusting Handle
Outlet Connection
1.
Attach the regulator to the cylinder valve and tighten firmly with a wrench.
2.
Connect the operating system to the regulator outlet.
3.
Turn the regulator adjusting handle counterclockwise until the adjusting handle turns freely (no spring load) or until the adjusting handle is against the mechanical stop. (This closes the regulator valve).
OM-263230 Page 13
4.
Close the regulator outlet valve (if used).
Do not stand in front of or behind the regulator when opening the cylinder valve. Never open a cylinder valve suddenly as this can damage a regulator or cause an oxygen regulator fire.
5.
Slowly open the cylinder valve until the full cylinder pressure is indicated on the high pressure regulator gauge. Unless using acetylene, open the cylinder valve all the way. If using acetylene, open valve no more than one and one − half turns. Keep the cylinder wrench on the cylinder for quick shut − off. The high pressure gauge should read the cylinder pressure. The low pressure gauge should read zero (0).
6.
With the valve at the outlet of the regulator closed and the adjusting handle tension released, leave pressure on the inlet for 5–10 minutes. The low pressure gauge should not indicate any pressure increase. A pressure increase indicates gas leakage past the regulator valve seat.
Do not use the regulator if gas leakage occurs.
7. Turn the adjusting handle clockwise to set a normal pressure.
Do not use the regulator if you are unable to attain a desired pressure or the pressure continues to rise above the set point.
8. If the unit functioned properly in the previous step, close the cylinder valve and note the readings of both the low pressure (delivery) and high pressure (supply) gauges. After 5–10 minutes, a drop in the reading of either gauge indicates a leak in the system.
Use an approved oil-free leak detection fluid to locate possible leaks at the inlet, any threaded port, through the regulator diaphragm or through the outlet valve. PTFE tape is an acceptable pipe thread sealant. If other sealing materials are preferred, those materials must be compatible with the gas that is being used in the system.
9.
If a leak is indicated, relieve all pressures from the regulator and retighten the connections.
Do not use the regulator if a leak continues or is found at the diaphragm or outlet valve.
10. If the system is determined to be leak free, turn the adjusting handle clockwise until the desired pressure setting is indicated on the low pressure (delivery) gauge.
11. Open the outlet valve to purge the system. Adjust the regulator adjusting handle to obtain the desired pressure setting at the flow conditions.
NOTICE − A regulator is not intended to be used as a shut − off device.
Close the cylinder valve when system is not in use. Install a pressure relief device downstream of the regulator or outlet valve to protect the process equipment if operating pressures rise.
OM-263230 Page 14
SECTION 9
−
SYSTEM SHUTDOWN
1. Close the cylinder valve.
2. Release all gas from the regulator and/or system so that both gauges read zero (0). If the gas is flammable, an oxidant, corrosive, or toxic, render it harmless by employing a suitable disposal system before venting the gas to the atmosphere.
3.
Turn the adjusting handle counterclockwise until all spring load is released or the adjusting handle reaches the mechanical stop.
4. Close the outlet valve (if used).
5. Disconnect the regulator.
6. If the regulator is to remain out of service, protect the inlet and outlet fittings from dirt, contamination or mechanical damage.
7. Replace the cylinder valve cap.
SECTION 10
−
PERFORMANCE
CHARACTERISTICS
The following information is intended to help you determine if the regulator is performing properly.
A.
Indications Of Proper Performance
D The delivery pressure drops when flow is started and/or increased.
D The delivery pressure rises when flow is stopped. This difference in delivery pressure between flow and no flow condition is called
“lockup.”
D The delivery pressure of a single stage regulator increases as the supply/cylinder pressure decays (as the cylinder is emptied). This will not happen with a 2-stage regulator until the supply pressure drops below the first-stage set pressure.
B.
Indications Of Improper Performance
D The delivery pressure continues to rise when flow is stopped (lock − up) without a change in adjusting-handle position. This condition indicates valve seat wear or contamination with foreign materials
(which allows gas to leak to the delivery side). This condition is referred to as “creep.” If this condition exists, remove regulator from service and have it repaired or replaced.
D A significant drop in delivery pressure during normal flow conditions indicates internal blockage. Check inlet connection filters for contamination. If this condition exists, remove regulator from service and have it repaired or replaced.
OM-263230 Page 15
SECTION 11
−
CARE AND MAINTENANCE
Periodic inspection and maintenance of the pressure regulator is essential for continued safe and satisfactory operation. The frequency of servicing will depend on duty cycle and type of gas.
Inspect regulator monthly. If the regulator is used under normal, non-corrosive conditions, perform annual maintenance (such as removing deposits left by gas and replacing any worn or damaged parts). Inspect and maintain the regulator more frequently if the system is subject to a high duty cycle or is used in corrosive conditions. Regulators requiring service or repair should be sent to a Factory Authorized Service Agent.
A.
Inspection
Follow these steps to inspect regulator:
1. Inspect gauges to assure they read zero (0) when all pressure is released from the system.
2. With adjusting handle turned counterclockwise (to release all spring tension), slowly open cylinder valve. The high pressure (supply) gauge should read cylinder pressure and the low pressure (delivery) gauge should read zero (0).
3. With valve at outlet of regulator closed and adjusting handle tension released, leave pressure on inlet for 5–10 minutes. The low pressure gauge should not indicate any pressure increase. A pressure increase indicates leakage past the regulator valve seat.
If leakage is indicated, remove regulator from service and have it repaired or replaced.
4. Turn adjusting handle clockwise to set a nominal pressure. If you are unable to attain desired pressure setting or if pressure continues to rise above set point, remove regulator from service and have it repaired or replaced.
5. If unit functions properly in the previous step, close cylinder valve and note the readings of both the high pressure (supply) and low pressure (delivery) gauges. After 5–10 minutes, a drop in reading of either gauge indicates a leak in the system.
Use an approved oil-free leak detection fluid to locate possible leaks at the inlet, any threaded port, through the regulator diaphragm, or through the outlet valve. PTFE tape is an acceptable pipe thread sealant. If other sealing materials are preferred, those materials must be compatible with the gas that is being used in the system.
6. If leak is at the inlet or at a threaded port, relieve all pressure from the regulator and then tighten. if leak continues or is found at the diaphragm or outlet valve, remove regulator from service and have it repaired or replaced.
B.
Storage
1. Regulators taken out of service for extended periods should receive proper care to extend their service life.
2.
Regulators used in a non-corrosive gas service should be wiped clean with a clean, dry, lint-free cloth and sealed in a plastic bag for storage in a dry area at room temperature.
3. Regulators with dry nitrogen and sealed in a plastic bag. Regulators used for
OM-263230 Page 16
corrosive service may continue to corrode in storage after exposed to atmospheric oxygen and moisture.
C.
Repair Service
Any regulator in need of service should be returned to a Factory Authorized Service Agent for evaluation.
OM-263230 Page 17
Effective January 1, 2022
(For Oxy-Fuel and Pressure Regulation Equipment with a date code of CCA or newer)
This limited warranty supersedes all previous Miller warranties and is exclusive with no other guarantees or warranties expressed or implied.
LIMITED WARRANTY - Subject to the terms and conditions below, Miller
Electric Mfg. LLC, Appleton, Wisconsin, warrants to authorized distributors that new Miller equipment sold after the effective date of this limited warranty is free of defects in material and workmanship at the time it is shipped by
Miller. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WAR-
RANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF
MERCHANTABILITY AND FITNESS. Within the warranty periods listed below, Miller will repair or replace any warranted parts or components that fail due to such defects in material or workmanship. Miller must be notified in writing within thirty (30) days of such defect or failure, at which time Miller will provide instructions on the warranty claim procedures to be followed. Miller shall honor warranty claims on warranted equipment listed below in the event of a defect within the warranty coverage time periods listed below. Warranty time periods start on the delivery date of the equipment to the end-user purchaser, or 12 months after the equipment is shipped to a US or Canada distributor, or
18 months after the equipment is shipped to an international distributor, whichever occurs first.
1.
5 Years – Parts and Labor
* Torch Handles, Cutting Attachments, Straight Cutting Torches and Machine Torches. The use of tips other than genuine Miller tips voids the warranty.
2.
3 Years – Parts and Labor
* Toughcut Outfits, Series 22, 30, 32, 35, 36, 40, 46 Regulators, and all Flowmeters, Flow Gauges, and Flowmeter Regulators
3.
2 Years – Parts and Labor
* Series 250, 820, and Branded Specialty Gas Regulators
4.
1 Year – Parts and Labor
* Gas Axe Cutting Torches, HVAC/Purge Regulators, 3-Stage Nitrogen Low-Pressure Blanketing Regulators, Gas Savers, Gas
Mixers, and all other Oxy-Fuel Products
* The Little Torch, Quickbraze Torch, Handi-Heet/Silver Smith
Torch
5.
90 Days – Parts and Labor
* Corrosive Service Regulators
Miller’s True Blue
)
Limited Warranty shall not apply to:
1.
Consumable components; oxy-fuel cutting, welding, and heating tips, or parts that fail due to normal wear.
2.
Items furnished by Miller, but manufactured by others. These items are covered by the manufacturer’s warranty, if any.
3.
Equipment that has been modified by any party other than Miller, or equipment that has been improperly installed, improperly operated or misused based upon industry standards, or equipment which has not had reasonable and necessary maintenance, or equipment which has been used for operation outside of the specifications for the equipment.
4.
Defects caused by accident, unauthorized repair, or improper testing.
MILLER PRODUCTS ARE INTENDED FOR COMMERCIAL AND INDUSTRIAL
USERS TRAINED AND EXPERIENCED IN THE USE AND MAINTENANCE OF
WELDING EQUIPMENT.
OM-
The exclusive remedies for warranty claims are, at Miller’s option, either: (1) repair; or (2) replacement; or, if approved in writing by Miller, (3) the pre-approved cost of repair or replacement at an authorized Miller service station; or
(4) payment of or credit for the purchase price (less reasonable depreciation based upon use). Products may not be returned without Miller’s written approval. Return shipment shall be at customer’s risk and expense.
The above remedies are F.O.B. Appleton, WI, or Miller’s authorized service facility. Transportation and freight are the customer’s responsibility. TO THE
EXTENT PERMITTED BY LAW, THE REMEDIES HEREIN ARE THE SOLE
AND EXCLUSIVE REMEDIES REGARDLESS OF THE LEGAL THEORY. IN
NO EVENT SHALL MILLER BE LIABLE FOR DIRECT, INDIRECT, SPE-
CIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING LOSS
OF PROFIT) REGARDLESS OF THE LEGAL THEORY. ANY WARRANTY
NOT PROVIDED HEREIN AND ANY IMPLIED WARRANTY, GUARANTY,
OR REPRESENTATION, INCLUDING ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR PARTICULAR PURPOSE, ARE
EXCLUDED AND DISCLAIMED BY MILLER.
Some US states do not allow limiting the duration of an implied warranty or the exclusion of certain damages, so the above limitations may not apply to you.
This warranty provides specific legal rights, and other rights may be available depending on your state. In Canada, some provinces provide additional warranties or remedies, and to the extent the law prohibits their waiver, the limitations set out above may not apply. This Limited Warranty provides specific legal rights, and other rights may be available, but may vary by province.
Mil oxy-fuel warr 2022-01
OM- Page 19
Safety Pack
Order Kit No. 270129 w/DVD
This Kit Includes:
30 “37 Violations Safety Quiz” Brochures
30 Safety Meeting Guides (English, French, Spanish)
1 41 Minute Oxy-Fuel Safety Video
1 Set of 6 Miller Cartoon Safety Posters
1 Post-Safety Video Test and Answer Key
(may be duplicated)
To Order Safety Materials, Contact
Customer Service.
Miller Electric Mfg. LLC
An Illinois Tool Works Company
1635 West Spencer Street
Appleton, WI 54914 USA
International Headquarters − USA
USA Phone: 920-735-4505 Auto-Attended
USA & Canada FAX: 920-735-4134
International FAX: 920-735-4125
For International Locations Visit www.MillerWelds.com
ORIGINAL INSTRUCTIONS − PRINTED IN USA
E 2022 Miller Electric Mfg. LLC 2022 − 01
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