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Unitor UWI 400 Mode D'emploi

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OM-202 137B
March 2002
Processes
Multiprocess Welding
Description
Arc Welding Power Source
UWI 400
(380–440 Volt Model)

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  • Page 1 OM-202 137B March 2002 Processes Multiprocess Welding Description Arc Welding Power Source UWI 400 (380–440 Volt Model)

  • Page 3: Table Des Matières

    TABLE OF CONTENTS SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING ......1-1.
  • Page 4 Declaration of Conformity For European Community (CE) Products UWI 400 Declares that the product: conforms to the following Directives and Standards: Directives Electromagnetic compatibility Directives: 89/336/EEC, 92/31/EEC Low Voltage Directive: 73/23/EEC Machinery Directives: 89/392/EEC, 91/368/EEC, 93/C 133/04, 93/68/EEC Standards Electromagnetic compatibility (EMC) Product standard for arc welding equipment:...

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

    SECTION 1 – SAFETY PRECAUTIONS - READ BEFORE USING som _nd_4/98 1-1. Symbol Usage Means Warning! Watch Out! There are possible hazards with this procedure! The possible hazards are shown in the adjoining symbols. This group of symbols means Warning! Watch Out! possible Y Marks a special safety message.
  • Page 6 ARC RAYS can burn eyes and skin. BUILDUP OF GAS can injure or kill. D Shut off shielding gas supply when not in use. Arc rays from the welding process produce intense D Always ventilate confined spaces or use visible and invisible (ultraviolet and infrared) rays that can burn eyes and skin.

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

    1-3. Additional Symbols For Installation, Operation, And Maintenance FIRE OR EXPLOSION hazard. MOVING PARTS can cause injury. D Do not install or place unit on, over, or near D Keep away from moving parts such as fans. combustible surfaces. D Keep all doors, panels, covers, and guards D Do not install unit near flammables.

  • Page 8: Emf Information

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

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

    SECTION 1 – CONSIGNES DE SECURITE – LIRE AVANT UTILISATION som _nd_fre 4/98 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. Ce groupe de symboles signifie Mise en garde ! Soyez vigilant ! Il y a des Y Identifie un message de sécurité...
  • Page 10 LES RAYONS DE L’ARC peuvent pro- LES ACCUMULATIONS DE GAZ ris- voquer des brûlures dans les yeux et quent de provoquer des blessures ou sur la peau. même la mort. Le rayonnement de l’arc du procédé de soudage D Fermer l’alimentation du gaz protecteur en cas de génère des rayons visibles et invisibles intenses non utilisation.

  • 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 Risque D’INCENDIE OU DES ORGANES MOBILES peuvent D’EXPLOSION. provoquer des blessures. D Ne pas placer l’appareil sur, au-dessus ou à proxi- D Rester à l’écart des organes mobiles comme le mité...

  • Page 12: Principales Normes De Sécurité

    1-4. 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.

  • Page 13: Section 2 - Definitions

    SECTION 2 – DEFINITIONS 2-1. Manufacturer’s Warning Label Definitions Warning! Watch Out! There are possible hazards as shown by the symbols. Electric shock from welding electrode or wiring can kill. 1.1 Wear dry insulating gloves. Do not touch electrode with bare hand.
  • Page 14 Warning! Watch Out! There are possible hazards as shown by the symbols. Electric shock from wiring can kill. Disconnect input plug or power before working on machine. Hazardous voltage remains on input capacitors after power is turned off. Do not touch fully charged capacitors.

  • Page 15: Manufacturer's Rating Labels

    Warning! Watch Out! There are possible hazards as shown by the symbols. Beware of fire. Use of incorrect extension cord can cause fire. Always use extension cord that has the size of conductors and total length as specified in the table. Table showing correct <...

  • Page 16: Symbols And Definitions

    2-3. Symbols And Definitions Alternating Amperage Panel Voltage Current (AC) Output Circuit Breaker Remote Gas Tungsten Arc Negative Voltage Input Welding Direct Current Protective Earth Positive Inductance (DC) (Ground) Constant Current Constant Voltage Foot Control Line Connection Three Phase Static Frequency Con- Shielded Metal Arc Gas Metal Arc...

  • Page 17: Section 3 - Installation

    SECTION 3 – INSTALLATION 3-1. Specifications Amperes Input at Rated Rated Maximum Voltage Amperage Load Output 50/60 Hz Welding Welding Open-Circuit Open-Circuit Range Range Rating Output Voltage DC 380 V 440 V 300 A @ 21.0 19.0 12.4 11.5 32 Volts DC, 10 –...

  • Page 18: Volt-Ampere Curves

    3-3. Volt-Ampere Curves Volt-ampere curves show minimum and maximum voltage and amper- age output capabilities of unit. Curves of other settings fall be- tween curves shown. A. CC Mode B. CV Mode ARC CONTROL va_curve1 4/95 – SA-178 652 / SA-178 653 OM-202 137 Page 14...

  • Page 19: Selecting A Location

    3-4. Selecting A Location 24 in (610 mm) Dimensions And Weight 87 lb (39.5 kg) 17 in (432 mm) 12-1/2 in (318 mm) Movement Lifting Handles Y Do not move or operate unit Use handles to lift unit. where it could tip. Hand Cart Use cart or similar device to move unit.

  • Page 20: Weld Output Terminals And Selecting Cable Sizes

    3-5. Weld Output Terminals And Selecting Cable Sizes Y ARC WELDING can cause Electromagnetic Interference. To reduce possible interference, keep weld cables as short as possible, close together, and down low, such as on the floor. Locate welding operation 100 meters from any sensitive electronic equipment. Be sure this welding machine is installed and grounded according to this manual.

  • Page 21: Remote 14 Receptacle Information

    3-6. Remote 14 Receptacle Information Socket* Socket Information 24 volts ac. Protected by circuit breaker CB2. 24 VOLTS AC 24 VOLTS AC Contact closure to A completes 24 volts ac con- tactor control circuit. 115 volts ac. Protected by circuit breaker CB1. C L N 115 VOLTS AC 115 VOLTS AC...

  • Page 22: Connecting Input Power

    3-8. Connecting Input Power Check input voltage available at site. Input And Grounding Conductors Line Disconnect Device Select type and size of overcurrent protection using Section 3-7. Y Always connect green/ yellow wire supply grounding terminal, never to a line terminal. L1 (U) L2 (V) L3 (W)

  • Page 23: Section 4 - Operation

    SECTION 4 – OPERATION 4-1. Front Panel Controls 202 133 Power On/Off Switch best results, place Inductance/Dig control in When set lower, short-circuit amperage at the maximum position. low arc voltage is the same as normal welding The fan motor is thermostatically amperage.

  • Page 24: Meter Functions

    4-2. Meter Functions NOTE The meters display the actual weld output values for approximately three seconds after the arc is broken. Mode Meter Reading At Idle Lift-Arc Trigger Hold TIG (GTAW) Blank Preset Amps TIG (GTAW) Blank Preset Amps 24.5 MIG (GMAW) Preset Volts Blank...

  • Page 25: Mode Switch Settings

    4-3. Mode Switch Settings NOTE The SMAW modes provide the Adaptive Hot Start feature, which automatically increases the output amperage at the start of a weld should the start require it. This eliminates electrode sticking at arc start. Mode Output Control Select: Lift-Arc Trigger Hold TIG (GTAW)

  • Page 26: Lift-Arc Trigger Hold Tig

    4-4. Lift-Arc Trigger Hold TIG TIG Electrode Workpiece Procedure requires: control Start sequence: • Touch tungsten electrode to workpiece at weld start point. • Momentarily depress output switch. • Slowly lift electrode. An arc will 1 – 2 form when electrode is lifted. “Touch”...

  • Page 27: Section 5 - Maintenance & Troubleshooting

    SECTION 5 – MAINTENANCE & TROUBLESHOOTING 5-1. Routine Maintenance Y Disconnect power Maintain more often before maintaining. during severe conditions. 3 Months Repair Or Replace Replace Cracked Replace Damaged Or Torch Body Cracked Unreadable Cables Labels Repair Or Replace Cracked Cables And Cords Clean Tighten Weld...

  • Page 28: Voltmeter/Ammeter Help Displays

    5-3. Voltmeter/Ammeter Help Displays HE.L P–0 HE.L P–5 HE.L P–1 HE.L P–6 HE.L P–2 HE.L P–7 HE.L P–3 HE.L P–8 HE.L P–4 HE.L P–9 fan to cool it (see Section 3-2). Operation will shown, have an electrician check the input All directions are in reference to the front continue when the unit has cooled.

  • Page 29: Circuit Breakers

    5-4. Circuit Breakers Circuit Breaker CB1 Circuit Breaker CB2 CB1 protects 110 volt ac portion of Remote 14 receptacle from over- load. CB2 protects 24 volt ac portion of Remote receptacle from overload. Press button to reset breaker. Ref. ST-801 245-A 5-5.
  • Page 30 Notes OM-202 137 Page 26...

  • Page 31: Section 6 - Electrical Diagram

    SECTION 6 – ELECTRICAL DIAGRAM 202 153 Figure 6-1. Circuit Diagram For Welding Power Source OM-202 137 Page 27...

  • Page 32: Section 7 - Parts List

    SECTION 7 – PARTS LIST 802 801-A Figure 7-1. Parts Assembly OM-202 137 Page 28...
  • Page 33 Item Dia. Part Mkgs. Description Quantity Figure 7-1. Parts Assembly ....670729 WRAPPER (ME-175 148) ........
  • Page 34 Item Dia. Part Mkgs. Description Quantity Figure 7-1. Parts Assembly (Continued) ......SCREW, mtg foot (ME-176 736) .

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