ESAB EFU 30 User manual

EFU 30, EFU30IB
Fit-up unit
Instruction manual
0463 760 101  GB  20230428
Valid for: Serial number:
LX246-xxxx-xxxx

TABLE OF CONTENTS
0463 760 101 -3- © ESAB AB 2023
1 SAFETY ...................................................................................................................................... 4
1.1 Meaning of symbols.................................................................................................... 4
1.2 Non-compliant operation ............................................................................................ 4
1.3 Safety precautions ...................................................................................................... 4
2 INTRODUCTION......................................................................................................................... 7
2.1 Equipment.................................................................................................................... 7
2.2 Purpose and function of EFU ..................................................................................... 7
2.3 Terminology used in this manual............................................................................... 7
3 TECHNICAL DATA ..................................................................................................................... 8
3.1 EFU 30 .......................................................................................................................... 8
3.2 EFU 30 IB ..................................................................................................................... 9
4 INSTALLATION........................................................................................................................... 10
4.1 Location........................................................................................................................ 10
4.2 Lifting instructions ...................................................................................................... 10
4.3 Adjusting the wheel stands ........................................................................................ 10
4.4 Adjusting the included angle ..................................................................................... 12
4.5 Installation procedure ................................................................................................. 12
5 OPERATION ............................................................................................................................... 13
5.1 EFU unit details ........................................................................................................... 13
5.2 Control panel ............................................................................................................... 13
5.3 Wireless remote - control pendant ............................................................................ 14
5.4 Switch the mains power on ........................................................................................ 15
5.5 Operating the fit up unit.............................................................................................. 15
5.6 Operation safety .......................................................................................................... 16
5.7 Welding......................................................................................................................... 17
5.8 Stopping the EFU ........................................................................................................ 18
6 MAINTENANCE.......................................................................................................................... 18
6.1 General ......................................................................................................................... 18
6.2 Storage ......................................................................................................................... 18
6.3 Repair and maintenance............................................................................................. 18
6.4 Cleaning ....................................................................................................................... 19
6.5 Breakdowns ................................................................................................................. 19
6.6 Electromechanical cylinder........................................................................................ 19
6.6.1 Lubrication trapezoid spindle/tube MCT 75(standard) / MCT 75 WE................. 20
6.6.2 Lubricant............................................................................................................. 20
6.6.3 Bearings ............................................................................................................. 21
6.6.4 PU Wheels ......................................................................................................... 21
7 TROUBLESHOOTING ................................................................................................................ 21
7.1 Mechanical malfunctions............................................................................................ 22
7.2 Electrical malfunctions ............................................................................................... 22
8 ORDERING SPARE PARTS ....................................................................................................... 23
ORDERING NUMBERS......................................................................................................................... 24
WIRING DIAGRAM................................................................................................................................ 25
ACCESSORIES ..................................................................................................................................... 31

1  SAFETY
0463 760 101 -4- © ESAB AB 2023
1 SAFETY
1.1 Meaning of symbols
As used throughout this manual: Means Attention! Be Alert!
DANGER!
Means immediate hazards which, if not avoided, will result in immediate, serious
personal injury or loss of life.
WARNING!
Means potential hazards which could result in personal injury or loss of life.
CAUTION!
Means hazards which could result in minor personal injury.
WARNING!
Before use, read and understand the instruction manual and
follow all labels, employer´s safety practices and Safety Data
Sheets (SDSs).
1.2 Non-compliant operation
CAUTION!
This handling equipment is not suitable for the following:
• Any vessel which is heavier than the maximum weight limit of the handling
equipment
• Any vessel that is larger/smaller than the maximum/minimum diameter
supported
• If the handling equipment have polyurethane or rubber tires, do not use them
on preheated vessels above 60°C
1.3 Safety precautions
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 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 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  SAFETY
0463 760 101 -5- © ESAB AB 2023
1. Anyone who uses the equipment must be familiar with:
• its operation
• location of emergency stops
• its function
• relevant safety precautions
• welding and cutting or other applicable operation of the equipment
2. The operator must ensure that:
• no unauthorised person is stationed within the working area of the
equipment when it is started up
• no-one is unprotected when the arc is struck or work is started with the
equipment
3. The workplace must:
• be suitable for the purpose
• be free from drafts
4. Personal safety equipment:
• Always wear recommended personal safety equipment, such as safety
glasses, flame-proof clothing, safety gloves
• Do not wear loose-fitting items, such as scarves, bracelets, rings, etc.,
which could become trapped or cause burns
5. General precautions:
• Make sure the return cable is connected securely
• Work on high voltage equipment may only be carried out by a
qualified electrician
• Appropriate fire extinguishing equipment must be clearly marked and
close at hand
• Lubrication and maintenance must not be carried out on the equipment
during operation
WARNING!
Arc welding and cutting can be injurious to yourself and others. Take precautions when
welding and cutting.
ELECTRIC SHOCK - Can kill
• Do not touch live electrical parts or electrodes with bare skin, wet gloves
or wet clothing
• Insulate yourself from work and ground.
• Ensure your working position is safe
ELECTRIC AND MAGNETIC FIELDS - Can be dangerous to health
• Welders having pacemakers should consult their physician before
welding. EMF may interfere with some pacemakers.
• Exposure to EMF may have other health effects which are unknown.
• Welders should use the following procedures to minimize exposure to
EMF:
○ Route the electrode and work cables together on the same
side of your body. Secure them with tape when possible. Do
not place your body between the torch and work cables.
Never coil the torch or work cable around your body. Keep
welding power source and cables as far away from your body
as possible.
○ Connect the work cable to the workpiece as close as possible
to the area being welded.

1  SAFETY
0463 760 101 -6- © ESAB AB 2023
FUMES AND GASES - Can be dangerous to health
• Keep your head out of the fumes
• 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
• Protect your eyes and body. Use the correct welding screen and filter
lens and wear protective clothing
• Protect bystanders with suitable screens or curtains
NOISE - Excessive noise can damage hearing
Protect your ears. Use earmuffs or other hearing protection.
MOVING PARTS - Can cause injuries
• Keep all doors, panels and covers closed and securely in place. Have
only qualified people remove covers for maintenance and
troubleshooting as necessary. Reinstall panels or covers and close doors
when service is finished and before starting the roller beds.
• Stop the handling equipment before installing or connecting unit.
• Keep hands, hair, loose clothing and tools away from moving parts.
FIRE HAZARD
• Sparks (spatter) can cause fire. Make sure therefore that there are no
inflammable materials nearby
HOT SURFACE - Parts can burn
• Do not touch parts bare handed.
• Allow cooling period before working on equipment.
• To handle hot parts, use proper tools and/or insulated welding gloves to
prevent burns.
MALFUNCTION - Call for expert assistance in the event of malfunction.
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.

2  INTRODUCTION
0463 760 101 -7- © ESAB AB 2023
NOTE!
Dispose of electronic equipment at the recycling facility!
In observance of European Directive 2012/19/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 has an assortment of welding accessories and personal protection equipment for
purchase. For ordering information contact your local ESAB dealer or visit us on our website.
2 INTRODUCTION
This Instruction manual describes the use and maintenance of the fit-up unit EFU30 and EFU30IB,
referred to as EFU in this document. Actions that must be carried out by the manufacturer are not
included in this manual.
This manual is part of the EFU. Keep a copy of the manual with the EFU and the original in a safe
place. If the EFU is sold, supply the manual with it.
The illustrations and diagrams used in this manual are for illustrative purposes only to help explain
instructions in the text. The equipment supplied may differ slightly.
2.1 Equipment
The EFU is supplied with:
• Lifting units
• Mounted control cabinet
• Wireless remote - control pendant
• Base frame
• Instruction manual
2.2 Purpose and function of EFU
The EFU is designed to aid the joining and welding of cylindrical vessels.
By placing and adjusting the independent lifting units on the EFU, vessels with varying diameters can
be placed on the EFU in combination with a suitable roller bed (ECD or ESD). The wheels can be
adjusted on the base frame to accommodate different vessel diameters.
2.3 Terminology used in this manual
Base frame The frame where wheel stands are mounted on. These are pre-drilled so
that the wheel stands can be positioned for different vessel diameters.
Wheel stand The stand which houses the EFU wheels. This is bolted down to the base
frame. It also houses a powered electrical cylinder that lift or lower the
wheel.
Control panel Electrical control box mounted on the base frame end.

3  TECHNICAL DATA
0463 760 101 -8- © ESAB AB 2023
Wireless remote -
control pendant
A wireless operator hand control pendant.
Receiver The receiver that communicates with the wireless remote-control pendant.
Vessel Any component or device that is handled on the roller bed set.
3 TECHNICAL DATA
3.1 EFU 30
EFU 30
Max loading capacity 15000kg (33069 lb)
Vertical workpiece adjustment ±40mm (±1.57in.)
Workpiece diameter Ø, conventional
Roller Bed
480mm (18.90in.) up to 5700mm (224.41in.)
Workpiece diameter Ø, self-aligning
Roller Bed
1420mm (55.91in.) up to 5000mm (196.85in.)
Mains supply 380–440V, 3 phase, 50Hz
Mains fuse 16A
Roller type Polyurethane (90°C / 92°A Shore)
Roller width / diameter Ø 2×90mm (2×3.54in.) / 400mm (15.74in.)
Dimensions (L×W×H),max 4619×700×1249mm (181.85× 27.56× 49.17in.)
Weight 1285kg (2834lb)
Wireless remote - control pendant Wireless
Control voltage 24V
Operation temperature 0 to +40°C (+32 to +104 °F)

4  INSTALLATION
0463 760 101 -9- © ESAB AB 2023
3.2 EFU 30 IB
EFU 30 IB
Max loading capacity 15000kg (33069 lb)
Turning capacity 45000 kg (99208 lb)
Turning drive motor 2×0.37 kW
Turning speed 200–2000 mm/min (5.51-78.74 in./min)
Vertical workpiece adjustment ±40mm (±1.57in.)
Workpiece diameter Ø, conventional
Roller Bed
480mm (18.90in.) up to 5700mm (224.41in.)
Workpiece diameter Ø, self-aligning
Roller Bed
1420mm (55.91in.) up to 5000mm (196.85in.)
Mains supply 380–440V, 3 phase, 50Hz
Mains fuse 16A
Roller type Polyurethane (90°C / 92°A Shore)
Roller width / diameter Ø 2×90mm (2×3.54in.) / 400mm (15.74in.)
Travelling capacity 30 000 kg (66 138 lb
Traveling drive motor 2×0.12 kW
Travelling Speed Low / High 200/2000 mm/min (5.51/78.74 in./min)
Assembled for track width1) 1730 mm (68.11 in.) or 2500 mm (98.43 in.)
Dimensions (L×W×H),max 4619×700×1249mm (181.85× 27.56× 49.17in.)
Weight 1285kg (2834lb)
Wireless remote - control pendant Wireless
Control voltage 24V
Operation temperature 0 to +40°C (+32 to +104 °F)
1) EFU 30 IB is available in two different track widths variants.

4  INSTALLATION
0463 760 101 - 10 - © ESAB AB 2023
4 INSTALLATION
4.1 Location
WARNING!
Always ensure that there is sufficient space around the EFU.
Ensure to have suitable access and enough space around the EFU, including the vessel when loaded.
Position it to allow unhindered loading and unloading of vessels onto the EFU by overhead crane or
other lifting devices.
4.2 Lifting instructions
WARNING!
When a direction button (upward or downward) is pressed, the EFU begin to lift or lower the
vessel.
NOTE!
Use correctly rated overhead cranes or forklift trucks to move the EFU.
Lifting by crane
Lift the EFU by using the lifting points on the EFU wheel stands. Use one lifting point on each side of
the wheel stand, four lifting points in total. The recommended angle between the chain and the lifting
points on the roller beds is 60°.
Place the EFU on a smooth, level, hard floor capable of taking the weight of the EFU and vessel over
the contact area of the EFU with the floor.
The distances between the base frames should match the vessel dimensions. If the vessel is perfectly
symmetrical and one drive with one idler is used, place the drive unit and the idler unit on one-third of
the way along the vessel's length to ensure that each section carries an equal load.
If one end of the vessel is heavier, move the drive or idler section closer to this end to balance the
loading on each section.
4.3 Adjusting the wheel stands
NOTE!
Adjust the wheel stands so that the axis of rotation of the vessel is on the centre line of the
EFU frame.
The positions of the two wheel stands on the base frame must be adjusted to load vessels of different
diameters.

4  INSTALLATION
0463 760 101 - 11 - © ESAB AB 2023
1. Unbolt the wheel stand from the base frame.
2. Use an overhead crane to lift the wheel stand using the lifting points.
3. Move the wheel stand to the required position for the diameter of the vessel.
4. Bolt the wheel stands back onto the base frame using all the bolts, and tighten to the
correct torque i.e. M12 (8.8) 81 Nm and M16 (8.8) 197 Nm.
5. See tables and the picture below for correct distances between the two wheels
stands.
In combination with conventional
roller bed
In combination with self aligning
rollerbed
Distance A Minimum
objectØ(mm)
Maximum
objectØmm)
Minimum
objectØ(mm)
Maximum
objectØ(mm)
780 480 750
970 750 1240
1160 1240 1740
1540 1740 2370
1920 2370 3700
2300 3600 4300
2680 4300 5700
1260 1420 2000
1640 2200 3000
2020 3000 4000
2400 3700 5000

5  OPERATION
0463 760 101 - 12 - © ESAB AB 2023
4.4 Adjusting the included angle
The included angle (α) is the angle between two lines from the centre of the rotation axis of the vessel
to the centre of each wheel on the EFU. As the angle increases, so do the resulting load on each
wheel, and consequently, the load on the bearings. Also, by increasing the angle, more torque,
therefore, more power is required to lift the vessel.
The distance between the wheel stands on EFU depends on the diameter of the vessel. To achieve a
safe and smooth operation of the EFU, the recommendation is the keep the included angle (α)
between 45° and 60°.
4.5 Installation procedure
Follow this installation procedure before the first use, after maintenance or repair work, or after a
storage period of the EFU.
The EFU are fully tested functionally before dispatching from the factory.
It is recommended to check the operation of all controls before the EFU are taken into production.
Installation procedure:
• Check that all moving parts, for example, the wheels, can move freely.
• Check the integrity of all cables, mains, and motors, make sure there are no cuts, etc.
• Check that all wireless remote - control pendant controls operate correctly.
• Check that the emergency stop on both wireless remote - control pendants is
functional and locks all other controls so the roller beds cannot restart, then reset on
the control panel.
• Check that the emergency stop on the control panel works and locks all other controls
so the roller beds cannot restart, then reset on the control panel.
• Check that the steel framework is not damaged.

5  OPERATION
0463 760 101 - 13 - © ESAB AB 2023
5 OPERATION
5.1 EFU unit details
The EFU is to be used in combination with a driven roller bed when the object is conical and in
combination with another EFU for joining cans together or in growing lines.
The EFU consists of a base frame with two wheel stands bolted onto the top. Holes are drilled through
the top of the base frame for the wheel stands to be positioned at different distances to suit the vessel
diameter.
Both wheel stands are equipped with electromechanical cylinders that lift or lower the vessel via a
steel cradle. Both electromechanical cylinders are equipped with an inverter that controls the cylinder.
The fit-up unit is manually controlled using a wireless remote-control pendant.
5.2 Control panel
1. Mains switch (F1) 4. E-stop reset pushbutton (F31)
2. Emergency stop button (F30) 5. White lamp (F34)
3. Mains ON lamp (F32) 6. Alarm lamp/pushbutton (F33)
Control panel
1. Mains switch (F1).
2. Emergency stop button (F30). Pressing causes loss of function. The button must be
released before reset is possible.
3. Mains ON lamp (F32). Illuminates (green) once power has been turned on and the
control system has started up. (Mains switch (1) is turned to ON position). This
pushbutton, in combination with (F33), is also used for calibration and reset of a
second roller bed (RB2) connected to the primary roller bed (RB1).
4. E-stop reset button (F31). Illuminates (blue) when any of the emergency stop
pushbuttons are activated and/or not reset. It flashes when the e-stop pushbuttons
are de-activated again and will go off when the buttons are pushed (E-stop reset).

5  OPERATION
0463 760 101 - 14 - © ESAB AB 2023
5. White lamp (F34). Illuminates after requested control mode has been chosen, either
local (illuminates constantly) or controlled from an external device (flashes), for
example, ESAB CaB. Press this pushbutton to activate local control when the roller
bed is used as a standalone unit. Press again to deactivate it. When the roller bed is
connected to and controlled from an ESAB CaB i.e., digital output from the CaB is set
to high, this lamp flashes until the signal is set to low again.
6. Alarm lamp / pushbutton (F33). Illuminates constantly (red) when any kind of fault has
occurred. Must be manually reset after the fault has been detected and fixed. It
flashes if battery power is low on the wireless remote-control pendant and stops
flashes when the battery is charged or replaced.
7. Connector to external control, for example, CaB (XS1). A dummy plug with jumpers
(1XP1) must be connected to be able to run the roller bed as a stand-alone unit.
8. Connector to a second EFU controller i.e., synchronized drives (XP2). An EFU can be
connected to any ECD/ESD or EFU unit. A dummy plug with jumpers (1XS2) must be
connected to be able to run the EFU as either a single unit or when it is the last unit in
a chain of several connected EFU.
5.3 Wireless remote - control pendant
NOTE!
When one of the direction buttons (up or down) is pressed, the EFU immediately begin to lift or
lower the vessel.
The system is delivered with two wireless remote-control pendants with rechargeable batteries, one
receiver (mounted behind the control panel), and one inductive charger. The two wireless
remote-control pendants are working on the same radio channel and frequency, and therefore only
one at a time would be used. Ideally, one is used in the operation while the other is connected to the
charger.
1. Emergency stop button 6. Main switch, ON/OFF
2. Lowering both wheels parallel 7. Lifting both wheels parallel
3. Lifting right wheel. Toggling function ON/OFF 8. Lifting left wheel Toggling function ON/OFF
4. Lowering right wheel 9. Lowering left wheel
5. Railcar motion direction A (optional function) 10. Railcar motion direction B (optional function).

5  OPERATION
0463 760 101 - 15 - © ESAB AB 2023
5.4 Switch the mains power on
WARNING!
Do not operate the fit up if there are signs of damage. Always have an authorized ESAB
service technician to check and make repairs if necessary.
Before switching on the fit-up unit, check that:
1. The wheel stands are correctly bolted on the base frame.
2. The wheels are correctly positioned under the vessel.
3. There are no obstructions to prevent rotation of the vessel (if one is loaded).
Visually inspect the wheels, electrical cylinders, wireless remote - control pendant, control panel and
cables for any signs of damage.
WARNING!
Make sure that the mains supply matches the electrical voltage shown on the control panel.
WARNING!
Ensure that mains cable do not lay on vehicle or forklift traffic lanes and do not cause a
tripping hazard.
1) Plug in the mains lead to the power supply.
2) Switch on the mains power, the mains on lamp (green) on the control panel illuminates.
3) Turn on any of the two wireless remote - control pendants.
WARNING!
Only one remote control unit is to be used while utilising the equipment. The other remote
control unit must be turned off and securely stored in a designated location.
4) Check that the emergency stop buttons are not pressed in.
5) Press the E-stop reset pushbutton.
If running as standalone, press the control mode pushbutton (white lamp).
The EFU unit is now ready to operate.
5.5 Operating the fit up unit
NOTE!
Test the emergency stop functionality frequently by pressing the e-stop pushbuttons, at least
one time a month.
1) When the EFU is correctly aligned with another unit and the wheel stands are in the correct
position, start loading the vessel on th EFU and the combined unit.
This must be done steadily, to not shock load the EFU. Shock loading cause damage to the
electromechanical cylinders.
Ensure that no protuberances on the vessel can strike objects around the EFU or the floor during
rotation.
2) To lift or lower the vessel, press the respective motion direction pushbutton:
• 2, 3 and 4 for lowering
• 6, 7 and 8 for lifting
Pushbuttons 2 and 7 have two modes:
• Press down to the first position - normal speed
• Press further to the bottom position - high speed

5  OPERATION
0463 760 101 - 16 - © ESAB AB 2023
5.6 Operation safety
Do not let parts of the vessel, for example, the connection tubes, come into contact with the EFU,
floor, or objects in the vicinity during rotation and/or lowering the vessel. This can cause damage to the
EFU.
Ensure to have proper earthing during welding. Lack of proper earthing can cause the electrics on the
EFU to short out.
If the emergency stop button is pressed in, find out the reason for the action before restarting the EFU.
The EFU can be overloaded, as more load is put through each wheel if wheel stands are too far apart.
CAUTION!
Ensure that the wheel stands are not too close together.

5  OPERATION
0463 760 101 - 17 - © ESAB AB 2023
DANGER!
Very unsafe position.
Never operate the EFU at an included angle of less than 45°.
During rotation, the vessel could roll off the EFU causing serious injury to anyone in the
vicinity. This can also happen with an unbalanced load when the centre of gravity of the vessel
is offset from the axis of rotation.
See section "Adjusting the wheel stands" for more information. Make sure that the units are aligned
parallel to each other. Otherwise, the vessel can creep lengthways and fall off the EFU and/or the
roller beds. This can also cause wear and damage to the EFU wheels.
The illustration shows the correct alignment procedure between two sections (two roller bed idler units
in the picture above).
Alignment
1. Ensure that the floor is leveled and free from cracks or other damages.
2. Ensure that heights are within limits.
3. Ensure that both sections have their wheel stands mounted at the corresponding
place, i.e., C1 and C2 are equal.
4. Ensure that sections are not tilted.
5. Ensure that: A1=A2±0.5mm (0.02in.) and B1=B2±0.5 mm (0.02in.).
5.7 Welding
WARNING!
The vessel must be earthed independently from the EFU when welding.
Earthing through the EFU causes serious damage to the EFU.
The earthing requirements of specific welding procedures must be known, and earthing should be
correctly connected to the vessel before welding. An EFU is not designed to earth the vessel during
welding.

6  MAINTENANCE
0463 760 101 - 18 - © ESAB AB 2023
5.8 Stopping the EFU
On the wireless remote-control pendant, lifting or lowering directions are only activated when any
dedicated pushbuttons are pressed.
Motion is stopped as soon as the pushbutton is released.
NOTE!
Use the emergency stop button on the control panel and wireless remote-control pendant only
in case of an emergency.
6 MAINTENANCE
6.1 General
WARNING!
During all maintenance or repair procedures, the EFU must be electrically isolated. Switch off
the main electrical supply and unplug the mains cable.
WARNING!
After disconnecting the power, there may be some residual charge in some components in the
panel. Wait for a few minutes after disconnecting the mains power before commencing work
on any electrical elements of the EFU.
The installation procedure must be carried out after maintenance, repair, or storage period, see
section "Installation procedure".
6.2 Storage
Store the EFU in a cool dry place. After a long period of storage, the EFU must be thoroughly checked
before use.
WARNING!
When the EFU are stored or transported in a cold climate and moved into a warm location,
condensation can be built up in the EFU or the electrical controls. To prevent damage, allow
the EFU to adjust to the new environment temperature.
CAUTION!
Do not store the EFU outside unprotected. The EFU must be sheeted, bare metal areas,
bearings, gears, and shafts suitably greased to prevent corrosion.
6.3 Repair and maintenance
Keep the EFU clean and free from dirt or waste from the welding process.
Check the electromechanical cylinder regularly and keep it clean, especially the piston and the area
around the sealing on top of the cylinder. Check for any damages on the piston and sealing.
Inspect the entire EFU installation at least once per year. Pay particular attention to:
• Electrical contacts
• Switches and controls
• Mechanical parts, fixings are not loose.
• Condition of PU wheels

6  MAINTENANCE
0463 760 101 - 19 - © ESAB AB 2023
• Wheel rotation is full and there is no eccentric rotation around the axles.
• Metal corrosion
• Frame damage
• Signs of damage to any of the sliding bearings
• Electrcial cylinder maintenance
• Cable damage: mains and any visible cable running from the control panel to the
motors.
• Correct functioning of the emergency stops and the control panel mains switch.
Remove and replace any damaged parts.
6.4 Cleaning
WARNING!
EFU must be electrically isolated before cleaning. Electrical components must not come in
contact with water or other cleaning fluids.
NOTE!
Ensure that the EFU are clean. Any arc sparks, flux or slag must be removed from the EFU as
soon as possible.
Frequently check that the equipment is free from any damages, mechanical or electrical. At
least one time a month.
The EFU do not require any special cleaning instructions. The EFU do not create any pollution to the
environment around them during normal operation, although, the welding process being carried out on
them may pollute the EFU.
6.5 Breakdowns
If the EFU stop working, the equipment must be repaired by authorized ESAB service technicians.
NOTE!
Repeated faults indicate a problem with the EFU. Inform the person responsible for service
and maintenance.
6.6 Electromechanical cylinder
WARNING!
During all maintenance work on the electromechanical cylinder, the power source must be
disconnected.
WARNING!
Protect moving/rotating parts from accidental access.
Regular maintenance checks:
• Regularly check that the electromechanical cylinder always stops before the warning
zones.
• Regularly check that the electromechanical cylinder always stops before the external
mechanical stops have been reached.

6  MAINTENANCE
0463 760 101 - 20 - © ESAB AB 2023
The trapezoid spindle of the electromechanical cylinder should be lubricated at least once every 24
months or sooner if the number of cycles indicated below has been reached (see the table). For the
type of lubrication, see 5.9 Lubricant.
Strokes (mm) Cycles (lubrication interval)
0-300 5000
6.6.1 Lubrication trapezoid spindle/tube MCT 75(standard) /
MCT 75 WE
Run the electromechanical cylinder to reach its lubricating position.
Lubricating position (mm from the retracted position)
MCT 75 X=12 to 28mm
Lubricate the electromechanical cylinder through the nipple, approximately 100g / 1000mm stroke.
Don´t use more grease than is recommended.
The electromechanical cylinder gear case is normally lubricated permanently. The lubricant level
should be at least halfway up the worm wheel or should cover the entire worm screw.
6.6.2 Lubricant
NOTE!
Never mix a synthetic lubricant with a mineral oil-based lubricant. Refill only with the type of
lubricant specified on the plate!
Use only the specified grease on the trapezoidal spindle.
The machine plate specify the type of lubricant to be used in the electromechanical cylinder gear case.
The electromechanical cylinder gear case have a one-time lubrication on delivery and the lubricant
does not need to be replaced during normal operations.