Rights reserved to alter specifications without notice.
TOCe
- 3 -
GB
1SAFETY
Users of ESAB 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 equipment. The following recommendations should be ob
served 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 equip
ment. Incorrect operation of the equipment may lead to hazardous situations which can result in in
jury to the operator and damage to the equipment.
1.Anyone who uses the equipment must be familiar with:
S its operation
S location of emergency stops
S its function
S relevant safety precautions
S welding and cutting
2.The operator must ensure that:
S no unauthorized 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 drafts
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.
Arc welding and cutting can be injurious to yourself and others. Take precausions when welding and
cutting. Ask for your employer's safety practices which should be based on manufacturers' hazard
data.
ELECTRIC SHOCK - Can kill
SInstall and earth the unit in accordance with applicable standards.
SDo not touch live electrical parts or electrodes with bare skin, wet gloves or wet clothing.
SInsulate yourself from earth and the workpiece.
SEnsure your working stance is safe.
FUMES AND GASES - Can be dangerous to health
SKeep your head out of the fumes.
SUse 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.
SProtect your eyes and body. Use the correct welding screen and filter lens and wear protective
clothing.
SProtect bystanders with suitable screens or curtains.
FIRE HAZARD
SSparks (spatter) can cause fire. Make sure therefore that there are no inflammable materials nearby.
NOISE - Excessive noise can damage hearing
SProtect your ears. Use earmuffs or other hearing protection.
SWarn 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!
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 electromagnetic
compatibility of class A equipment in those locations, due to conducted
as well as radiated disturbances.
CAUTION
Read and understand the instruction manual before
installing or operating.
Dispose of electronic equipment at the recycling facility!
In observance of European Directive 2002/96/EC on Waste Electrical and Electronic
Equipment and its implementation in accordance with national law, electrical and/or
electronic equipment that has reached the end of its life must be disposed of at a
recycling facility.
As the person responsible for the equipment, it is your responsibility to obtain
information on approved collection stations.
For further information contact the nearest ESAB dealer.
ESAB can provide you with all necessary welding protection and accessories.
LAF 1601/ LAF 1601M are remote-controlled 3-phase welding power sources
designed for high-efficiency mechanical submerged-arc welding (SAW).
The welding power sources are fan-cooled and are monitored by a thermal cutout
against overload. When the thermal cutout is deployed the yellow lamp on the front
panel illuminates automatically. The reset is carried out automatically when the
temperature has decreased to a permitted level.
3TECHNICAL DATA
LAF 1601LAF 1601M
Mains connection:400/415/500 V, 350 Hz
400/440/550 V, 360 Hz
Primary currentI
Permissible load at:
100 % duty cycle1600 A/ 44 V1600 A /44 V
Setting range100-1600 A /24-44 V100-1600 A /24-44 V
No-load voltage56 V56 V
No-load power230 W230 W
Effiency89%89%
Power factor0,860,86
Weight585 kg585 kg
Dimensions L x W x H774 x 598 x 1430774 x 598 x 1430
The IP code indicates the enclosure class, i. e. the degree of protection against penetration by solid
objects or water. Equipment marked IP23 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.
The installation must be carried out by a professional.
Note
Mains supply requirements
High power equipment may, due to the primary current drawn from the mains supply, influence the
power quality of the grid. Therefore connection restrictions or requirements regarding the
maximum permissible mains impedance or the required minimum supply capacity at the interface
point to the public grid may apply for some types of equipment (see technical data). In this case it
is the responsibility of the installer or user of the equipment to ensure, by consultation with the
distrubution network operator if necessary, that the equipment may be connected.
4.1Location
WARNING
Fasten the equipment - particularly if the
ground is uneven or sloping.
SPlace the welding power source on a level foundation.
SMake sure there is nothing to prevent the cooling.
SOn delivery the welding power source is connected
for 400 V.
SFor other supply voltage:
Remove the left side plate.
Perform the switchings on the main and control
transformer in accordance with the connection
instruction on page 16.
SSelect the mains cable with the correct cable area
and fuse the cable with the correct fuse in accordance
with local regulations (see the table on page 8).
SRemove the front plates (x 2).
SConnect the ground cable to the screw marked .
STighten the cable clamp (1).
SConnect the mains cables to the main connection terminals L1, L2 and L3 (5).
SConnect the control cable between the welding power source and the control
box to the 28-pin connector (2) on the inside of the welding power source.
SConnect the 1-pin measuring cable (4) for measuring the arc voltage to the
return cable/ welding head.
SConnect a suitable welding and return cable in the connectors (3) marked
+ and - on the front of the welding power source.
SFit the side/front plates.
Mains connection
LAF 160150 Hz60 Hz
Voltage (V)400 / 415500400 / 440550
Phase current I
Cable area (mm
Fuse, slow (A)160125160125
(A)136108136108
1eff
2)
3 x 70+353 x 50+353x70+ 353x70+ 35
LAF 1601M50 Hz60 Hz
Voltage (V)230400 / 415500230400 / 440550
Phase current I
Cable area (mm
Fuse, slow (A)200160125200160125
Note:
The mains cable areas and fuse sizes as shown above are in accordance with Swedish regulations.
They may not be applicable in other countries: make sure
that the cable area and fuse sizes comply with the relevant national regulations.
All guarantee undertakings from the supplier cease to apply if the customer attempts any
work in the product during the guarantee period in order to rectify any faults.
6.1Cleaning
6.1.1Welding power source
WARNING!
Blocked air inlets or outlets will lead to overheating.
SClean the welding power source as necessary.
Dry compressed air is recommended for the purpose.
6.1.2Contactor
WARNING!
Never use compressed air to clean the contactor without first taking it apart
completely.
Note:
To ensure the reliable operation of the contactor, the magnetic parts must be kept
clean.
If the contactor has to be cleaned it must be taken apart, and all the pieces be
cleaned.
Alternatively, the contactor can be replaced.
7ORDERING OF SPARE PARTS
Repair and electrical work should be performed by an authorized ESAB serviceman.
Use only ESAB original spare and wear parts.
LAF 1601/ LAF 1601M is designed and tested in accordance with the international and
European standards EN 60974-1 and EN 60974-10. 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.
Spare parts may be ordered through your nearest ESAB dealer, see the last page of
this publication.