Hobart Welding Products AirForce 750 Owner's Manual
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Hobart Welding Products AirForce 750 Owner's Manual

Hobart Welding Products AirForce 750 Owner's Manual

Air plasma cutter
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AirForce 750
OM-279
180 060J
April 1999
Processes
Air Plasma Cutting
and Gouging
Description
Air Plasma Cutter

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Summary of Contents for Hobart Welding Products AirForce 750

  • Page 1 OM-279 180 060J April 1999 Processes Air Plasma Cutting and Gouging Description Air Plasma Cutter AirForce 750...
  • Page 2 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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING ......1-1. Symbol Usage .

  • Page 5: Section 1 - Safety Precautions - Read Before Using

    SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING pom _nd_5/97 1-1. Symbol Usage Means Warning! Watch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols. Y Marks a special safety message. This group of symbols means Warning! Watch Out! possible ELECTRIC SHOCK, MOVING PARTS, and HOT PARTS hazards.
  • Page 6 Work in a confined space only if it is well ventilated, or while wearing FLYING SPARKS can cause injury. an air-supplied respirator. Fumes from cutting and oxygen deple- tion can alter air quality causing injury or death. Be sure the Sparks and hot metal blow out from the cutting arc.

  • Page 7: Additional Symbols For Installation, Operation, And Maintenance

    1-3. Additional Symbols For Installation, Operation, And Maintenance HOT PARTS can cause severe burns. FIRE OR EXPLOSION hazard. D Do not touch hot parts bare handed. D Do not locate unit on, over, or near combustible surfaces. D Allow cooling period before working on torch. D Do not install unit near flammables.

  • Page 8: Emf Information

    1-5. EMF Information Considerations About Welding Or Cutting And The Effects Of Low 1. Keep cables close together by twisting or taping them. Frequency Electric And Magnetic Fields 2. Arrange cables to one side and away from the operator. Welding or cutting current, as it flows through the welding or cutting cables, will cause electromagnetic fields.

  • Page 9: Section 1 - Consignes De Sécurité - Lire Avant Utilisation

    SECTION 1 – CONSIGNES DE SÉCURITÉ – LIRE AVANT UTILISATION pom_nd_fre_5/97 1-1. 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. Y Identifie un message de sécurité...
  • Page 10 D N’approchez pas le tube du chalumeau et l’arc pilote lorsque la gâchette est D Ne mettez pas votre tête au–dessus des vapeurs. Ne respirez pas ces va- enfoncée. peurs. D Le câble de masse doit être pincé correctement sur la pièce à couper, métal D Si vous êtes à...

  • Page 11: Dangers Supplémentaires En Relation Avec L'installation, Le Fonctionnement Et La Maintenance

    1-3. Dangers supplémentaires en relation avec l’installation, le fonctionnement et la maintenance DES PIECES CHAUDES peuvent pro- Risque D’INCENDIE OU voquer des brûlures graves. D’EXPLOSION. D Ne pas toucher des parties chaudes à mains nues. D Ne pas placer l’appareil sur, au-dessus ou à proximité D Laisser refroidir avant d’intervenir sur la torche.

  • Page 12: Information Sur Les Champs Électromagnétiques

    1-5. Information sur les champs électromagnétiques Données sur le soudage électrique et sur les effets, pour l’organisme, Garder les câbles ensembles en les torsadant ou en les des champs magnétiques basse fréquence attachant avec du ruban adhésif. Mettre tous les câbles du côté opposé de l’opérateur. Le courant de soudage ou de coupage passant dans les câbles de puis- sance crée des causera des champs électromagnétiques.

  • Page 13: Section 2 - Installation

    SECTION 2 – INSTALLATION 2-1. Specifications Maximum Amperes Input at Rated Load Open- Rated Output 60 Hz Type of Plasma Rated Model Model Cutting Cutting Circuit Circuit Output Output Voltage Capacity 200 V 230 V 460 V 575 V Single- 42.30 36.80 18.40...

  • Page 14: Cutting Speed

    2-4. Cutting Speed The cutting speed curve shows the recommended maximum cutting speed capabilities of the power source and torch for mild steel of various thickness. Y Exceeding recommended cutting speeds will cause rapid erosion of the tip and electrode. Cutting speed is approximately 10 inches per minute at 0.7 in mild steel thickness at max set-...

  • Page 15: Connecting Gas/Air Supply

    2-6. Connecting Gas/Air Supply Unit Gas Fitting (Female 1/4 Use only clean and dry gas/air with 70 to 150 psi NPT) (483 to 1034 kPa) pressure. Quick Connect Gas Fitting Standard Gas Fitting Obtain and install desired fitting. Hose Obtain suitable hose according to installed fitting, and connect to fit- ting.

  • Page 16: Placing Jumper Links

    2-9. Placing Jumper Links Check input voltage available at site. Jumper Link Label Move jumper links to match input voltage and label on unit. Do not overtighten. Single-Phase Models 200 VOLTS 230 VOLTS 460 VOLTS S-083 566-C Three-Phase Models 230 Volts 460 Volts 575 Volts S-094 120-B...

  • Page 17: Connecting Input Power

    2-10. Connecting Input Power Strain Relief Clamp Route input and grounding conduc- tors through clamp to terminal board. Input And Grounding Three-Phase Connections Conductors Line Disconnect Device Select type and size of overcurrent protection using Section 2-8. Single-Phase Connections Three-Phase System Single-Phase System Y Always connect grounding conductor first.

  • Page 18: Section 3 - Operation

    SECTION 3 – OPERATION 3-1. Front Panel Controls Ref. ST-190 676 Pilot Arc Switch Saver position in most applications to length- Use Gas/Air Set area of control range for set- en the life of the torch and its consumables, ting gas/air pressure (see Section 3-2). Use switch to control pilot arc.

  • Page 19: Setting Gas/Air Pressure

    3-2. Setting Gas/Air Pressure Place controls in positions shown to adjust air pressure. Only gas/air cir- cuit is activated when the Power switch is turned On with Output Control in Gas/Air Set position. Pressure Gauge Pressure Adjustment Knob Lift knob and turn to adjust pres- sure.

  • Page 20: Sequence Of Operation

    3-3. Sequence Of Operation Do not clean torch by hitting it against a Inspect shield cup, tip, and electrode for hard surface. Hitting hard surfaces can wear before cutting or whenever cutting damage torch parts and stop proper opera- speed has been significantly reduced (see tion.

  • Page 21: Section 4 - Maintenance & Troubleshooting

    SECTION 4 – MAINTENANCE & TROUBLESHOOTING 4-1. Routine Maintenance Y Disconnect power Maintain more often before maintaining. during severe conditions. Each Use Check Torch Check Gas/Air Tip, Electrode, Pressure And Shield Cup Every Week Check Shield Cup Shutdown System 3 Months Service Air Replace Filter/Regulator...

  • Page 22: Trouble Lights

    4-2. Trouble Lights Pressure Light Lights if gas/air pressure is below 40 PSI (276 kPa). Difficulty establishing pilot arc may indicate consumables need to be cleaned or replaced. Turn power Off, and check for prop- er gas/air pressure (see Section 3-2).

  • Page 23: Troubleshooting

    4-4. Troubleshooting Trouble Remedy No pilot arc; difficulty in establishing an Clean or replace worn consumables as necessary (see torch Owner’s Manual). arc. Check for damaged torch or torch cable (see torch Owner’s Manual). Have Factory Authorized Service Agent check power switch S1, control relay CR1, CR5 and CR6, rectifi- er SR1 (and SR2 for single-phase models), safety control board PC1, power control boards PC2 and PC3, inductor L1, resistor R1, and check gas air system for leaks.
  • Page 24 Trouble Remedy Fan motor FM does not run; Power light Have Factory Authorized Service Agent check fan motor connections. and Ready light both On. Check input power, and check for proper input connections (see Sections 2-8 and 2-10). Trouble lights not working. Have Factory Authorized Service Agent check safety control board PC1.

  • Page 25: Section 5 - Electrical Diagrams

    SECTION 5 – ELECTRICAL DIAGRAMS 193 215 Figure 5-1. Circuit Diagram For 200/230/460 Volt Models OM-279 Page 21...
  • Page 26 194 148 Figure 5-2. Circuit Diagram For 230/460/575 Volt Models OM-279 Page 22...
  • Page 27 Notes OM-279 Page 23...

  • Page 28: Section 6 - Parts List

    SECTION 6 – PARTS LIST Hardware is common and not available unless listed. 12 13 ST-801 499-D Figure 6-1. Main Assembly OM-279 Page 24...
  • Page 29 Item Dia. Part Mkgs. Description Quantity Figure 6-1. Main Assembly ....178 158 PANEL, side LH ...........
  • Page 30 Item Dia. Part Mkgs. Description Quantity Figure 6-1. Main Assembly (Continued) ......PANEL, front (consisting of) .
  • Page 31 Notes OM-279 Page 27...
  • Page 32 Notes OM-279 Page 28...
  • Page 33 Notes...
  • Page 34 Notes...
  • Page 35 Effective October 1, 1999 5/3/1 WARRANTY applies to all Handler 135 and 175 models, Airforce 250, 250A, and 375 Warranty Questions? models, and Champion 10,000 models.This warranty also applies to the Beta-Mig 1800, Champ Call 1435, 2060, 8500 models, Ironman 250, Stickmate models, Tigmate models, and HSW-15 and 1-877-HOBART1 HSW-25 spot welder models effective with Serial No.

  • Page 36: Options And Accessories

    Welding Process Handbooks Call 1-877-Hobart1 Contact the Delivering Carrier for: File a claim for loss or damage during shipment. For assistance in filing or settling claims, contact your distributor and/or equipment manufacturer’s Transportation Department. PRINTED IN USA 2000 Hobart Welding Products. 1/00...

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