Sealy SGA3/FBA Quick Start Manual

Oxygen/fuel flashback

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Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these instructions,
and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE
THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
Refer to
Wear eye
instruction
protection
manual

1. SAFETY

1.1.

SPECIFIC FLASHBACK ARRESTOR SAFETY WARNINGS

The information on the flashback arrestor such as description of gas, maximum operating pressure and direction of flow sign has
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to be followed.
More than one component shouldn't be connected to the flashback arrestor.
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No marking (e.g. item number, date of first operation etc.) by scratching or punching is advised. Under these circumstances,
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Flashback arrestor may get damaged and leakage may occur.
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Flashback arrestors should be used according to the information marked on them.
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These products are manufactured by latest technology regarding to specify technical rules, present standards and instructions.
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User must follow the recommendations in this manual.
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Staff that use welding equipment and their components should have knowledge about these processes or be trained by registered by
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institute/staff according to current regulations in place.
Always have a fire extinguisher nearby.
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It is important to read the information on the flashback arrestor which gives a description of gas, maximum operating pressure and
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direction of flow which needs to be noted and observed.
More than one component shouldn't be connected to the flashback arrestor.
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1.2.

SITUATIONS THAT MAY CAUSE FLASHBACK

When cutting torch is damaged or used incorrectly.
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When high pressurized oxygen gas mixed in the low pressurized flammable gas fitting as a result of wrong adjustment of operating
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pressures.
When components connected which are not suitable for each other.
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If the Oxygen cylinder run out of gas; flammable gas flows inside the oxygen cylinder reversely through regulator.
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When untutored and inexperienced users use the products. When instructions are not followed.
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When components are connected with the wrong tools.
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Usage of gases or pressures different than ones which are defined on this manual and on the product.
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When product is used at temperatures under -20°C and over +60°C.
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1.3.
Keep away from flame at all times. Make sure that hoses are laid flat where possible and not in a position where they can be
run over by vehicles, which would result in permanent damage.
Empty cylinders should be kept in specified areas and clearly marked 'EMPTY'.
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Never use oil or grease on any inlet connections, outlet connections or cylinder valves.
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Examine hoses for cuts, burns or worn areas before each use. Also inspect fittings for damage. If any damage is found, replace
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immediately.
DO NOT repair hoses with tape.
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Keep all threads and unions clean and free from oil, dirt or grease.
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Never apply oil or grease to any thread.
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Make sure bottle keys are in place at all times so that in the event of an emergency the valves can be turned off quickly.
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LEAKING HOSES CAN KILL. Leak test all connections and valves prior to each use of the equipment.
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DO NOT join damaged hoses, they must be replaced immediately.
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Remember at all times
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At no time may you interchange this part with those of other manufacturers.
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Only Sealey replacement items should be used.
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All repairs/calibrations must only be undertaken by a BCGA approved service agent.
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2. INTRODUCTION

Protects operators, regulators and gas supply from the consequences of severe forms of flashback. Colour coded for easy
recognition. It also conforms to BS EN ISO 5175-1:2017 standard.
© Jack Sealey Limited
OXYGEN/FUEL FLASHBACK
SGA3/FBA, SGA4/FBA
MODEL NO'S:
BLUE = OXYGEN 'O'
RED = ACETYLENE 'A'.
Original Language Version
SGA3/FBA, SGA4/FBA Issue 1 16/12/2022

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Summary of Contents for Sealy SGA3/FBA

  • Page 1 When components are connected with the wrong tools. Usage of gases or pressures different than ones which are defined on this manual and on the product. When product is used at temperatures under -20°C and over +60°C. 1.3. Keep away from flame at all times. Make sure that hoses are laid flat where possible and not in a position where they can be run over by vehicles, which would result in permanent damage. Empty cylinders should be kept in specified areas and clearly marked ‘EMPTY’. Never use oil or grease on any inlet connections, outlet connections or cylinder valves. Examine hoses for cuts, burns or worn areas before each use. Also inspect fittings for damage. If any damage is found, replace immediately. DO NOT repair hoses with tape. Keep all threads and unions clean and free from oil, dirt or grease. Never apply oil or grease to any thread. Make sure bottle keys are in place at all times so that in the event of an emergency the valves can be turned off quickly. LEAKING HOSES CAN KILL. Leak test all connections and valves prior to each use of the equipment. DO NOT join damaged hoses, they must be replaced immediately. Remember at all times BLUE = OXYGEN ‘O’ RED = ACETYLENE ‘A’. At no time may you interchange this part with those of other manufacturers. Only Sealey replacement items should be used. All repairs/calibrations must only be undertaken by a BCGA approved service agent. 2. INTRODUCTION Protects operators, regulators and gas supply from the consequences of severe forms of flashback. Colour coded for easy recognition. It also conforms to BS EN ISO 5175-1:2017 standard. SGA3/FBA, SGA4/FBA Issue 1 16/12/2022 Original Language Version © Jack Sealey Limited...
  • Page 2 3. SPECIFICATION Model No: ....... SGA3/FBA /SGA4/FBA Gas Type SGA3/FBA: ........Oxygen Gas Type SGA4/FBA ........Acetylene Maximum Pressure ..........20bar 4. DEFINITIONS 4.1. Flame flashback is fast movement of flame to the source of gas (Cylinder, tank, installation, hose etc.) which is formed during welding,cutting etc. made by mixture of oxygen and flammable gas. 4.2. Flashback arrestors are security devices, which prevent the flow of gas during flashback. The arrestor prevents the flame spread to gas source by blocking the flame and stopping gas flow. 5. FUNCTIONS REFER TO FIG.2 5.1. THERMAL CUT-OFF VALVE The spring inside the flashback arrestor blocks the valve which is continuously pressed against the gas flow direction. When flame flashback occurs, the solder which holds the spring, melts with the high temperature. The spring is then released and the connected valve stops gas flow.
  • Page 3 REGISTER YOUR dispose of the product and fluids according to local regulations. PURCHASE HERE Note: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice. Important: No Liability is accepted for incorrect use of this product. Warranty: Guarantee is 12 months from purchase date, proof of which is required for any claim. Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR 01284 703534 sales@sealey.co.uk www.sealey.co.uk SGA3/FBA, SGA4/FBA Issue 1 16/12/2022 Original Language Version © Jack Sealey Limited...

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Sga4/fba

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