ESAB LHF 250 Instruction Manual
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ESAB LHF 250 Instruction Manual

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GB
LHF 250, LHF 400,
LHF 630, LHF 800
Instruction manual
0455 675 101 GB 050816
Valid for serial no. 906- -xxx- -xxxx

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Summary of Contents for ESAB LHF 250

  • Page 1 LHF 250, LHF 400, LHF 630, LHF 800 Instruction manual 0455 675 101 GB 050816 Valid for serial no. 906- -xxx- -xxxx...

  • Page 2: Table Of Contents

    1 DIRECTIVE ............2 SAFETY .

  • Page 3: Directive

    ESAB Welding Equipment AB, S--695 81 Laxå, Sweden, gives its unreserved guarantee that welding power source LHF 250 / 400 / 630 / 800 from serial number 550 complies with standard IEC/EN 60974--1, in accordance with the requirements of directive (73/23/EEC) and addendum (93/68/EEC) and with standard EN 50199 in accordance with the requirements of directive (89/336/EEC) and add- endum (93/68/EEC).

  • Page 4: Introduction

    INTRODUCTION LHF 250/400/630/800 are thyristor controlled welding rectifiers designed for welding with coated electrodes, TIG welding and arc air gouging. The welding rectifiers can be used with the following remote control devices: PHA 1, PHA 2, PHA 5, PHB 1, PHB 2, och PHC 2.

  • Page 5: Installation

    Connect the mains cable to the rectifier according to the relevant regulations and install a suitable fuse in the main fuse box. Make sure the welding rectifier is not covered or positioned so that cooling is obstructed. Connecting to mains LHF 250 LHF 400 LHF 630 LHF 800 Frequency...

  • Page 6: Operation

    OPERATION Set switch (1) to position ”I”. The white lamp (2) will light and the fan will start. Select the welding method using the toggle switch (3). Adjust the welding current using the knob (7) on the front, and set the toggle switch (8) to the position nearest the socket.

  • Page 7: Maintenance

    ORDERING OF SPARE PARTS LHF 250, LHF 400, LHF 630, LHF 800 is designed and tested in accordance with the in- ternational an European standards IEC/EN 60 974- -1 and EN 60 974- -1. It is the obligation of the service unit which has carried out the service or repair work to make sure that the product still conforms to the said standard.

  • Page 8: Assembly Instructions

    Assembly instructions bh10d002 - - 8 - - bh10a12a...

  • Page 9: Diagram

    Diagram Prim. 250/400 - - 9 - - bh10e12a...
  • Page 10 Sek. 250/400 - - 10 - - bh10e12a...
  • Page 11 Prim. 630/800 - - 11 - - bh10e12a...
  • Page 12 Sek. 630/800 - - 12 - - bh10e12a...

  • Page 13: Spare Parts List

    0319 951 884 LHF 800 Offshore, 400/415/500V 50Hz, 440/550V 60Hz Spare parts are to be ordered through the nearest ESAB agency as per the list on the back of the cover. Kindly indicate type of unit, serial number, denominations and ordering numbers according to the spare parts list.
  • Page 14 LHF 250, LHF 400, LHF 630, LHF 800 Edition 050816 C = component designation in the circuit diagram Item Ordering no. Denomination Notes 0151 270 001 Quick- -locking nut 0192 547 001 Nut 0320 029 002 Ground link 0468 797 001 Gasket...
  • Page 15 LHF 250, LHF 400, LHF 630, LHF 800 Edition 050816 - - 15 - - bh10s11a...
  • Page 16 LHF 250, LHF 400, LHF 630, LHF 800 Edition 050816 C = component designation in the circuit diagram Item Ordering no. Denomination Notes 0318 980 001 Insulating ring 0317 660 001 Element rod 0162 548 005 Resistor 00407 055 01 Connection block...
  • Page 17 LHF 250, LHF 400, LHF 630, LHF 800 Edition 050816 207, 208 209, 210 227--233 220--226 216, 217 - - 17 - - bh10s11a...
  • Page 18 LHF 250, LHF 400, LHF 630, LHF 800 Edition 050816 C = component designation in the circuit diagram Item Ordering no. Denomination Notes 0193 655 012 Terminal 12 pole K45.6 0192 716 004 Diode 6A 400W LHF 250, LHF 400 K2.3...
  • Page 19 LHF 250, LHF 400, LHF 630, LHF 800 Edition 050816 - - 19 - - bh10s11a...
  • Page 20 LHF 250, LHF 400, LHF 630, LHF 800 Edition 050816 C = component designation in the circuit diagram Item Ordering no. Denomination Notes 0192 784 102 Cap 0192 784 014 Socket 12 pole K45.4 0192 784 013 Connector pin plug 12 pole K45.3...
  • Page 21 LHF 250, LHF 400, LHF 630, LHF 800 Edition 050816 425, 426 - - 21 - - bh10s11a...
  • Page 22 LHF 400 Offshore, LHF 630, LHF 800 Edition 050816 C = component designation in the circuit diagram Item Ordering no. Denomination Notes Rectifier bridge 0319 690 884 Thyristor bridge LHF 400 Offshore K2.1 0319 690 882 Thyristor bridge LHF 630 K2.1 0319 932 880 Thyristor bridge LHF 800...
  • Page 23 LHF 400 Offshore, LHF 630, LHF 800 Edition 050816 506, 507 501--503 514--515 504--505 512--513 bh10s005 - - 23 - - bh10s11b...
  • Page 24 LHF 250, LHF 400 Edition 050816 Rectifier bridge for LHF 250, LHF 400 From serial No. 906. C = component designation in the circuit diagram Item Ordering no. Denomination Notes 0458 219 880 Rectifier bridge compl. 0458 219 001 Thermal cutout K31.1...
  • Page 26 ESAB subsidiaries and representative offices Europe NORWAY Asia/Pacific Representative offices AS ESAB AUSTRIA BULGARIA CHINA Larvik ESAB Ges.m.b.H ESAB Representative Office Shanghai ESAB A/P Tel: +47 33 12 10 00 Vienna- -Liesing Sofia Shanghai Fax: +47 33 11 52 03...

This manual is also suitable for:

Lhf 400Lhf 630Lhf 800

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