Parallel connection of
LAF-welding power source
Instruction manual
0449 546 001 110217
ENGLISH 3..............................................
Rights reserved to alter specifications without notice.
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ENGLISH
1SAFETY 4...........................................................
2 INTRODUCTION 7...................................................
2.1 General 7..................................................................
2.2 Connection instructions for two parallel-connected welding
power sources and one PEK control box 8......................................
3 Location Drawing 9..................................................
3.1 Location drawing - Welding Power Source LAF 631 9............................
3.2 Location drawing - Welding Power Source LAF 1001 10...........................
3.3 Location drawing - Welding Power Source LAF 1251/1601 11......................
4 Connection in Parallel Using Six-Thyristor Operation 12................
DIAGRAM 14............................................................
SPARE PARTS LIST 17..................................................
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. Note! Do not use safety
gloves when replacing wire.
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.
SafeArcW GB
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GB
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 MANUFACTURER'S 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 keep fumes and gases 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 inflam-
mable materials nearby.
NOISE - Excessive noise can damage hearing
S Protect your ears. Use ear defenders or other hearing protection.
S Warn bystanders of the risk.
MALFUNCTION
S Call for expert assistance in the event of malfunction.
SafeArcW GB
READ AND UNDERSTAND THE INSTRUCTION MANUAL BEFORE INSTALLING OR OPERATING.
PROTECT YOURSELF AND OTHERS!
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GB
CAUTION!
Class A equipment is not intended for use in residential locations where
the electrical power is provided by the public low-voltage supply system.
There may be potential difficulties in ensuring electromagnic
compatibility of class A equipment in those locations, due to conducted
as well as radiated disturbances.
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!
CAUTION!
The welding power source and control box PEH can't be used together.
SafeArcW GB
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