GB
LAF 635/LAF 635R
Instruction manual
Valid for serial no. 6440457 795 401 GB 2007--02--02
ESAB AB, Welding Equipment, S--695 81 Laxå, Sweden, gives its unreserved guarantee that welding
L
power source LAF 635 / LAF 635 R from serial number 606 complies with standard EN 60974--1, in
accordance with the requirements of directive (73/23/EEC) and addendum (93/68/EEC) and with
standard EN 60974--10 in accordance with the requirements of directive (89/336/EEC) and addendum
(93/68/EEC).
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -----------------------------------axå 2006--04--17
Kent Eimbrodt
Global Director
ESAB AB, Welding Equipment
SE--695 81 LAXÅ
SWEDEN Tel: + 46 584 81000 Fax: + 46 584 411721
DECLARATION OF CONFORMITY
2
1SAFETY 4...........................................................
2 INTRODUCTION 6...................................................
2.1 General 6..................................................................
2.2 Technical data 6............................................................
3 INSTALLATION 7....................................................
3.1 General 7..................................................................
3.2 Assembling and placing 7....................................................
3.3 Connections 7..............................................................
3.4 Mains connection 8..........................................................
3.5 PC board 8.................................................................
4 OPERATION 9.......................................................
4.1 General 9..................................................................
4.2 Controls 9..................................................................
4.3 Start--up 9..................................................................
5 MAINTENANCE 10....................................................
5.1 General 10..................................................................
5.2 Cleaning 10.................................................................
6 ORDERING OF SPARE PARTS 10......................................
DIAGRAM 12............................................................
CONNECTION INSTRUCTION 14..........................................
SPARE PARTS LIST 15...................................................
Rights reserved to alter specifications without notice.
TOCe
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GB
1SAFETY
Users of ESAB welding equipment have the ultimate responsibility for ensuring that anyone who
works on or near the equipment observes all the relevant safety precautions. Safety precautions
must meet the requirements that apply to this type of welding equipment. The following recommendations should be observed in addition to the standard regulations that apply to the workplace.
All work must be carried out by trained personnel well--acquainted with the operation of the welding
equipment. Incorrect operation of the equipment may lead to hazardous situations which can result
in injury to the operator and damage to the equipment.
1. Anyone who uses the welding equipment must be familiar with:
S its operation
S location of emergency stops
S its function
S relevant safety precautions
S welding
2. The operator must ensure that:
S no unauthorised person is stationed within the working area of the equipment when it is
started up.
S no--one is unprotected when the arc is struck
3. The workplace must:
S be suitable for the purpose
S be free from draughts
4. Personal safety equipment
S Always wear recommended personal safety equipment, such as safety glasses, flame--proof
clothing, safety gloves.
S Do not wear loose--fitting items, such as scarves, bracelets, rings, etc., which could become
trapped or cause burns.
5. General precautions
S Make sure the return cable is connected securely.
S Work on high voltage equipment may only be carried out by a qualified electrician.
S Appropriate fire extinquishing equipment must be clearly marked and close at hand.
S Lubrication and maintenance must not be carried out on the equipment during operation.
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WARNING
ARC WELDING AND CUTTING CAN BE INJURIOUS TO YOURSELF AND OTHERS. TAKE PRECAUTIONS WHEN WELDING. ASK FOR YOUR EMPLOYER’S SAFETY PRACTICES WHICH SHOULD BE
BASED ON MANUFACTURERS’ HAZARD DATA.
ELECTRIC SHOCK -- Can kill
S Install and earth the welding unit in accordance with applicable standards.
S Do not touch live electrical parts or electrodes with bare skin, wet gloves or wet clothing.
S Insulate yourself from earth and the workpiece.
S Ensure your working stance is safe.
FUMES AND GASES -- Can be dangerous to health
S Keep your head out of the fumes.
S Use ventilation, extraction at the arc, or both, to take fumes and gases away from your breathing zone
and the general area.
ARC RAYS -- Can injure eyes and burn skin.
S Protect your eyes and body. Use the correct welding screen and filter lens and wear protective
clothing.
S Protect bystanders with suitable screens or curtains.
FIRE HAZARD
S Sparks (spatter) can cause fire. Make sure therefore that there are no inflammable materials nearby.
NOISE -- Excessive noise can damage hearing
S Protect your ears. Use earmuffs or other hearing protection.
S Warn bystanders of the risk.
MALFUNCTION -- Call for expert assistance in the event of malfunction.
READ AND UNDERSTAND THE INSTRUCTION MANUAL BEFORE INSTALLING OR OPERATING.
PROTECT YOURSELF AND OTHERS!
WARNING
This product is intended for industrial use. In a domestic environment this
product may cause radio interference. It is the user’s responsibility to take
adequate precautions.
WARNING!
Read and understand the instruction manual
before installing or operating.
Do not dispose of electrical equipment together with normal waste!
In observance of European Directive 2002/96/EC on Waste Electrical and Electronic
Equipment and its implementation in accordance with national law, electrical equipment
that has reached the end of its life must be collected separately and returned to an
environmentally compatible recycling facility. As the owner of the equipment, you should
get information on approved collection systems from our local representative.
By applying this European Directive you will improve the environment and human health!
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2 INTRODUCTION
2.1 General
LAF 635 and LAF 635R are remote--controlled 3--phase welding power sources
designed for high--efficiency mechanical gas metal arc welding (MIG/MAG) or sub
arc welding (SAW). They are always to be used in combination with ESAB‘s control
box A2 --A6 Process Controller (PEH) or A2 Welding Control Unit (PEI).
LAF is fan--cooled and monitored by a thermal overload protection. When the
protection enters into action a yellow indicating lamp on the front panel goes on and
is reset automatically as soon as the temperature has gone down to an acceptable
level.
The welding power sources and the control unit are linked together over a 2--wire
bus enabling precision control of the welding process.
All welding parameter settings for the power source can be made by the operator on
the front panel of the control unit.
The operation of the power source is completely controlled and monitored by this
unit. Even the start and stop qualities can be set by way of the control unit. The
preset welding current parameters can also be monitored in the course of welding.
For more detailed information regarding the settings and the working mode of the
welding power source, please refer to the instruction manual for either the
A2--A6 Process Controller or the A2 Welding Control Unit.
2.2 Technical data
LAF 635/LAF 635R
Main connection 400/415 V 3μ50 Hz
440 V 3μ60 Hz
Permissible load at:
100 % duty cycle
60 % duty cycle
Setting range: 75 A / 18 V -- 800 A / 44 V (46 V)
No--load voltage 54 V
No--load power 150 W
Effiency 0,84
Power factor 0,90
Weight 260 kg
Dimensions L x W x H 652 x 483 x 800
Class of enclosure IP 23
Class of application
630 A/44 V
800 A/44 V
652 x 483 x 916 (including foot)
Enclosure class
The IP code indicates the enclosure class, i. e. the degree of protection against penetration by solid
objects or water. Equipment marked IP 23 is designed for indoor and outdoor use.
Application class
The symbol indicates that the power source is designed for use in areas with increased
electrical hazard.
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