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OM-928 198 842H
2007 −01
Processes
Air Plasma Cutting
and Gouging
Description
Air Plasma Cutter
™
AirForce 250A
And ICE-12C Torch
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From Hobart to You Thank you and congratulations on choosing Hobart. Now you can get the job done and get it done right. We know you don’t have time to do it any other way. This Owner’s Manual is designed to help you get the most out of your Hobart products. Please take time to read the Safety precautions. They will help you protect yourself against potential hazards on the worksite. We’ve made installation and operation quick and easy. With Hobart you can count on years of reliable service with
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TABLE OF CONTENTS SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1-1. Symbol Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1-2. Plasma Arc Cutting Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1-3. Additional Symbols For Installatio
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SECTION 1 − SAFETY PRECAUTIONS - READ BEFORE USING pom _nd_5/04 1-1. Symbol Usage Means Warning! Watch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols. Marks a special safety message. This group of symbols means Warning! Watch Out! possible ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards. Means “Note”; not safety related. Consult symbols and related instructions below for necessary actions to avoid the hazards. 1-2. Plasma Arc
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If inside, ventilate the area and/or use exhaust at the arc to remove EXPLODING PARTS can injure. cutting fumes and gases. If ventilation is poor, use an approved air-supplied respirator. On inverter power sources, failed parts can ex- Read the Material Safety Data Sheets (MSDSs) and the manufac- plode or cause other parts to explode when turer’s instruction for metals to be cut, coatings, and cleaners. power is applied. Always wear a face shield Work in a confined space only if it is
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1-3. Additional Symbols For Installation, Operation, And Maintenance HOT PARTS can cause severe burns. FIRE OR EXPLOSION hazard. Do not touch hot parts bare handed. Do not locate unit on, over, or near combustible surfaces. Allow cooling period before working on torch. Do not install unit near flammables. Do not overload building wiring − be sure power supply system is properly sized, rated, and protected to handle this unit. MOVING PARTS can cause injury. Keep away from moving parts
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1-5. Principal Safety Standards Safety in Welding and Cutting, ANSI Standard Z49.1, from American Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126 from Compressed Gas Association, 1235 Jefferson Davis Highway, Suite 501, Arlington, VA 22202. Safety and Health Standards, OSHA 29 CFR 1910, from Superinten- dent of Documents, U.S. Government Printing Office, Washington, D.C. Code for Safety in Welding and Cutting, CSA Standard W1
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SECTION 2 − CONSIGNES DE SÉCURITÉ − LIRE AVANT UTILISATION pom_fre 5/04 2-1. Signification des symboles Signifie Mise en garde ! Soyez vigilant ! Cette procédure présente des risques de danger ! Ceux-ci sont identifiés par des symboles adjacents aux directives. Identifie un message de sécurité particulier. Ce groupe de symboles signifie Mise en garde ! Soyez vigilant ! Il y a des ris- ques de danger reliés aux CHOCS ÉLECTRIQUES, aux PIÈCES EN MOUVE- Signifie NOTA ; n’est pas relatif à la sé
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Isoler la pince de masse quand pas mis à la pièce pour éviter le Tableau 1. Protection des yeux pour le coupage au plasma d’arc contact avec tout objet métallique. Il y a DU COURANT CONTINU IMPORTANT dans Intensité de courant en ampères Filtre de teinte (minimum) les convertisseurs après la suppression de l’ali- Moins de 20 no. 4 20 − 40 no. 5 mentation électrique. 40 − 60 no. 6 Arrêter les convertisseurs, débrancher le courant électrique, et dé- 60 − 80 no. 8 charger les condensateurs d’ali
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Un contact électrique ne doit jamais se produire entre un chalumeau LES BOUTEILLES peuvent exploser de plasma d’arc et une bouteille. si elles sont endommagées. Ne coupez jamais sur une bouteille pressurisée − une explosion en résulterait. Les bouteilles de gaz contiennent du gaz sous haute Utilisez uniquement des bouteilles de gaz, des détendeurs, des pression. Si une bouteille est endommagée, elle peut exploser. Puisque les bouteilles de gaz font habituellement boyaux et des raccords con
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2-4. Principales normes de sécurité Safety in Welding and Cutting, norme ANSI Z49.1, de l’American Wel- Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1, ding Society, 550 N.W. Lejeune Rd, Miami FL 33126 de la Compressed Gas Association, 1235 Jefferson Davis Highway, Suite 501, Arlington, VA 22202. Safety and Health Sandards, OSHA 29 CFR 1910, du Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. Règles de sécurité en soudage, coupage et procédés conne
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SECTION 3 − DEFINITIONS 3-1. Symbols And Definitions For Nameplate And Serial Number/Rating Label Plasma Arc Cutting Adjust Air/Gas Low Air Pressure Amperes (PAC) Pressure Light A No − Do Not Do Volts Increase Temperature V This Protective Earth Single Phase Constant Current Voltage Input (Ground) On Off Percent Direct Current Rated No Load Conventional Load Primary Voltage Line Connection U Voltage (Average) U Voltage U 0 1 2 Single Phase Rated Maximum Rated Welding Static Frequency 1 f1 Duty C
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SECTION 4 − INSTALLATION 4-1. Specifications For Power Source Rated Max** Primary Primary Primary Service Secondary Secondary Cutting Power OCV Volts Amperes (Recommended) Volts (DC) Amperes KW KVA Capacity Factor (DC) 0.25 in 20.32 (6.4 mm) 120 20A 110 12 2.01 2.44 0.82 353 (0.25*) At 6 IPM (2.5 mm/s) *While idling **10% High line condition 4-2. Specifications For Torch Air-cooled torch for plasma arc cutting (PAC) 35% duty cycle Gas flow/pressure: 1 SCFM (28.3 L/min) at 50 PSI (345 kPa) Safety
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4-4. Torch Dimensions And Weight 8-3/8 in (213 mm) 1 in (25 mm) 1-3/8 in (35 mm) 3.0 lb (1.4 kg) Ref. 801 397-A 4-5. Selecting A Location 6-3/4 in (171 mm) Dimensions And Weight 17 in (432 mm) 42 lb (19.1 kg) 18 in (457 mm) 1 Movement 1 Lifting Handle Use handle to lift unit. 2 Hand Cart 2 Use cart or similar device to move unit. 3 120 VAC Receptacle Locate unit near correct input power supply. Special installation may be required where gasoline or Location And Airflow volatile liquids are pr
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4-6. Connecting Work Clamp 1 Work Clamp 1 2 Workpiece Connect work clamp to a clean, paint-free location on workpiece, as close to cutting area as possible. 2 802 463-A 4-7. Connecting Input Power Check input voltage available at site. 1 Grounded Receptacle A 120 volt, 20 ampere individual 2 branch circuit protected by time-delay fuses or circuit breaker is required (see Section 4-1). 1 2 Plug From Unit Select extension cord of 12 AWG for up to 75 ft (23 m) or 10 AWG for up to 140 ft (46 m). S
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SECTION 5 − OPERATION 5-1. Controls 1 2 POWER OFF CUP ON TEMP INPUT VOLTAGE 3 196 630 1 Power Switch 3 Trouble Light b If unit overheats c If input power is not within 2 Power Light Trouble light comes on for the following specification (93 to 137 vac). If input conditions: power is outside of specified range, Use light to tell if unit is energized and ready cycle power by placing the power to operate. Light goes off if input power is not a If cup is removed from torch (unit switch in the off
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5-3. Sequence Of Operation EXAMPLE Of Cutting Operation Moisture from the compressor will form in the air line and at the torch. It will be normal to sometimes see moisture come out the end of the torch. The pilot arc starts immediately when trigger is pressed. For shielded cutting, place drag shield on Raise trigger lock and press edge of metal. For non-shielded cutting, After cutting arc starts, slowly trigger. Pilot arc starts. use 1/8 in (3.2 mm) standoff distance start moving torch across
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SECTION 6 − MAINTENANCE & TROUBLESHOOTING 6-1. Routine Maintenance Disconnect power Maintain more often before maintaining. during severe conditions. Each Use Check Torch Tip, Electrode, And Shield Cup Every Week Check Shield Cup Shutdown System 3 Months Replace Damaged Or Unreadable Labels Replace Cracked Parts Torch Body, Cable Tape Torn Outer Covering 6 Months Check Compressor Filter − Blow Out Or Clean With A Damp Cloth Vacuum Inside Or Replace If Necessary (Compressor Model Only) OM-928
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6-2. Trouble Light And Checking Shield Cup Shutdown System If certain problems occur, the trouble light comes on, and output stops. 1 Trouble Light a Lights if shield cup is loose. Turn power Off, and check shield cup connection 1 CUP (see Item 2 below). Power must be reset whenever TEMP the cup shutdown is activated. INPUT VOLTAGE Check shield cup shutdown system once a week. b Lights if power source overheats (see Sections 4-3 and 4-5). c Lights if input power is not within specification
