ermengineering LRW-130 User manual

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
____________________________________________________________________________________________________________________
www.ermengineering.com 󰞟󰞠󰞡󰞢󰞣info@ermengineering ✆([phone]
P a g . 1
(Original) Use and maintenance manual
Type: Longitudinal profile welding 1300 mm
Model: LRW-130
IMPORTANT:
Read this user manual and follow the instructions and warnings before operating this device.
Any modification or transformation performed on this machine may cause loss of the
manufacturer’s guarantee and liability.
This manual must always remain near to the machine and visible to all the operating and
maintenance staff, for any future consultation, forming part of the equipment.

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_______________________________________________________________________________________________________________________
P a g . 2
Index:
Page
-CE Declaration of conformity: ................................................................................................................................................3
-Description: ..................................................................................................................................................................................4
-Technical Characteristics: .......................................................................................................................................................4
-Standard equipment: ................................................................................................................................................................4
-Optional equipment: .................................................................................................................................................................4
-Warnings and safety:.................................................................................................................................................................4
-Installation and start-up:.........................................................................................................................................................5
-Electrical Connection: ...............................................................................................................................................................5
-Using instructions: .....................................................................................................................................................................6
-Care and maintenance ........................................................................................................................................................... 11
-Electrical drawings: ................................................................................................................................................................ 12
-Pneumatic drawings:_............................................................................................................................................................ 13
-Spare parts:................................................................................................................................................................................ 14

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_______________________________________________________________________________________________________________________
P a g . 3
-CE Declaration of conformity:
WE DECLARE, under our responsibility, that the machine:
- Type: Longitudinal welder
- Brand: ERM Engineering
- Model: LRW-130
- Serial No.: xxxxxx
- Manufacturer date: 2021
Inspired by the directives of the Official Journal of the European Communities:
2006/42/CE Machinery Directive
2014/35/UE Low Voltage Directive
2014/30/UE Electromagnetic Compatibility Directive
Complies with the design and construction specifications of the European Standards on General
Machine Safety:
EN 349 –EN 614-1 –EN 614-2 –EN 12100 –EN 11161-1 - EN 1005-1 –EN 1005-2 –EN
1005-3 - EN 1005-4 –EN 13849-1 –EN 13849-2 –EN 894-3 –EN 13850 - EN 13857 –EN
61310-1 EN 60204-1 - EN 14118 - EN 14120 –EN 13732-1
General Manager: Eduardo Ramos Martínez
Arenys de Munt (Barcelona)-SPAIN
Date: 2021/08

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_______________________________________________________________________________________________________________________
P a g . 4
-Description:
Continuous longitudinal profile welder for conveyor belts using a jet of hot air at the point of
intersection of the two materials. Fitted with speed, temperature and pressure controls for
different types of material.
-Technical Characteristics:
Dimensions 1980x700x1400 mm (LxWxH)
Weight 148 kg
Max. Belt Width 1300 mm
Min. continuous operation 960 mm
Pulley diameter 100 mm
Max. Belt Thickness 8 mm
Motor 0.25 kW
Leister Welder 3750W
-Standard equipment:
•Two welding heads
•Two pulleys 10x6 / 13x8 / 17x11
-Optional equipment:
•Other pulleys under order
-Warnings and safety:
−ERM Engineering recommends the users of this machine to fully read this user’s manual
prior to its use to guarantee safe work.
−It also advises and recommends equipment not being used by unqualified staff who have
not received prior training from ERM Engineering
−A copy of this manual delivered along with the machine must always remain at hand during
its use, both for the production operators as well as the maintenance managers.
NOTE: ERM Engineering shall not be held liable under any case for damage caused by
undue or improper use of this equipment.
−Any repairs or modification of the machine performed by personnel not qualified by ERM
Engineering or use of non-original spare parts provided by persons unrelated to the
company, shall give rise to loss of the manufacturer’s guarantee.

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_______________________________________________________________________________________________________________________
P a g . 5
−During use of the machinery and industrial use, people are subject to the risk of damage or
injury by mechanical elements in linear or gyrating movement, high voltage electric
components and static components under high temperature, due to which, during design
and construction of its equipment, ERM Engineering. has aimed to reduce and minimise
those risks by including protection devices and safety systems based on the European
Community Council Directives.
-Installation and start-up:
Site the machine in well ventilated places or under a fume exhaust hood.
THE FUMES PRODUCED WHEN WELDING SOME MATERIALS ARE TOXIC AND MAY
CAUSE IRRITATION OF THE RESPIRATORY TRACT.
Place the welder in such a way to simplify placement and removal of continuous belts on the
open side of the machine frame.
Allow sufficient free space for movement of material.
It must also be connected to a compressed air supply through the input to the pressure regulator
located on the left-hand side of the machine. Adjust the input pressure to 6 bar:
-Electrical Connection:
Connect the machine to a suitable single-phase 2 X 230 V power supply bearing in mind the
power consumption as this depends on whether it is fitted with one or two welding heads:

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_______________________________________________________________________________________________________________________
P a g . 6
-Using instructions:
Select and change, if necessary, the pulley corresponding to the profile to be processed by the
machine:
Place the belt on the welding table and centre the side guides so that the belt advances evenly
and without any side travel. It is also possible to move the welding carriage by loosening the
holding bolt (A):

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_______________________________________________________________________________________________________________________
P a g . 7
Once the belt is placed in position, close the frame using the arm (C) to prevent any movement or
deformation caused by the pressure of the pulleys:
Start the Leister welder by pressing the black wheel located on the rear and adjust the
temperature rotating this wheel
NOTE: For perfect welding, the welder should be pre-heated until the temperature digits
will be fixed.
Introduce one end of the profile into the rear of the machine until completing one turn of the
welding pulley as shown in the photo:
Lower the pulleys using the drive system located on the front of the welding carriage so that they
press the belt and are driven by turning the control knob (P):

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_______________________________________________________________________________________________________________________
P a g . 8
After the welder has been pre-heated, begin welding by turning the control knob (D) to start
welder rotation while at the same time pressing the green START button on the control panel to
start the motor.
During the welding process it is always possible to change any of the three settings: temperature,
speed and pressure.
All of these settings have a direct effect on the quality of the weld so a test should be performed
before welding the belt just to make sure all the settings are correct.
The position, angle and proximity of the welder is also very important for the temperature
setting. Increasing the distance or angle in relation to the profile reduces the effectiveness of the
bond between the materials.
Change the position of the welder by first loosening the screws (R) and then tightening them
again once it is adjusted:

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_______________________________________________________________________________________________________________________
P a g . 9
Note that any changes made to the temperature will not become effective until a few minutes
have elapsed. Adjusting the welding rate using the control potentiometer (S) has immediate
results:
Adjust the pressure by moving the pressure control knob located on the piston of the welding
pulley (G) this adjustment only becomes effective on operating the pulley drive system, even
though it only affects the welding pulley:
NOTE: Check the weld by attempting to pull the welded joint apart. It should not come
apart cleanly, that is, without tearing.
If this test is to be performed on a profile welded to fabric, wait at least 12 hours to allow
the components of the size to set before performing the test.

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_______________________________________________________________________________________________________________________
P a g . 10
Normally the sizes used for welding on fabric are two-component and require some hours
to fully set.
In the case of welding continuous belts, make a cut at the beginning of the weld at an angle of
about 45º:
Continue welding to this point and then stop the forward drive motor while at the same time
pressing the control to withdraw the Leister:
After overlapping the weld and once the profile has cooled, cut it and form the excess to match
the original shape.
Shut the welder down by adjusting the temperature of the Leister to 0 and allowing it to operate
for about 5 minutes to cool the heater element.
NOTE: Not completing this cooling process, that is turning off the blower when the heater
element is still hot, could cause the heater element to fuse because of the increased
temperature inside the tube.

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_______________________________________________________________________________________________________________________
P a g . 11
-Care and maintenance
•Because various chemical components are used during the welding process, there is an
accumulation of highly corrosive waste in the welding area (rollers, pulleys, guides, etc. and
so they should be cleaned regularly to ensure correct operation.
•Do not grease or lubricate any component of the machine.
These components are self-lubricated and the mixture of different lubricants could cause
jamming or seizing.
•Make sure the machine frame is always closed to prevent any deformation of the structure.
•Always make sure the black intake grille on the rear of the Leister is clean, if it is blocked
this would reduce the air flow rate and alter the weld quality.
•Protect the pulleys from knocks that could mark or damage their profiles as they would
cause imperfections in the welding.
•In the event of unusual noises in the welder, check the condition of the brushes. They have
relative wear.

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_________________________________________________________________________________________________________________________________________________________________________
P a g 12
-Electrical drawings:

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_________________________________________________________________________________________________________________________________________________________________________
P a g 13
-Pneumatic drawings:_

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_________________________________________________________________________________________________________________________________________________________________________
P a g 14
-Spare parts:

Use and maintenance manual
Longitudinal profile welding
Model: LRW-130
_________________________________________________________________________________________________________________________________________________________________________
P a g 15