Lincoln Electric SP20/MP2 Series Mounting instructions

MICROPLASMA WELDING TORCH
SP20 / MP2
SP45 / MP5
SAFETY INSTRUCTION FOR USE AND MAINTENANCE
EDITION : EN Instructions for use REF : 8695 9001
REVISION : E
DATE : 07-2018 Original instructions

Thank for the trust you have expressed by purchasing this equipment, which
will give you full satisfaction if you follow its instructions for use and
maintenance.
Its design, component specifications and workmanship comply with
applicable European directives.
Please refer to the enclosed CE declaration to identify the directives
applicable to it.
The manufacturer will not be held responsible where items not
recommended by themselves are associated with this product.
For your safety,there follows a non-restrictive list of recommendations or
requirements, many of which appear in the employment code.
Finally we would ask you kindly to inform your supplier of any error which
you may find in this instruction manual.

8695 9001
SP20/SP45 - MP2/MP5 I
CONTENTS
A - SAFETY INSTRUCTIONS............................................................................................................1
B - DESCRIPTION .............................................................................................................................2
1 - SP20/MP2 TORCH.............................................................................................................2
2 - SP45/MP5 TORCH.............................................................................................................2
C - INTRODUCTION ..........................................................................................................................3
1 - SP20 AND SP45 MANUAL & AUTOMATIC MICROPLASMA WELDING TORCHES.......3
2 - GENERAL SPECIFICATIONS............................................................................................3
3 - SP20 AND SP45 MANUAL TORCH ARC CONTROL UNIT...............................................4
D - DIMENSIONS AND ATTACHMENT .........................................................................................5
1 - MANUAL AND AUTOMATIC TORCHES............................................................................5
E - DELIVERY STATE .......................................................................................................................6
1 - SP20/45 MANUAL AND AUTOMATIC TORCHES............................................................6
F - USING SP20/45 AND MP2/5 TORCHES ....................................................................................8
1 - CHOOSING THE CONSTRICTING NOZZLE.....................................................................8
2 - CHOOSING ELECTRODESTIPPINGFITTINGTO THE TORCH .......................................8
G - OPERATING HINTS AND TIPS...................................................................................................10
1 - CONNECTING THE TORCH..............................................................................................10
2 - PRECAUTIONS LINKED WITH COOLING ........................................................................10
3 - FITTING THE CONSTRICTING NOZZLES........................................................................10
4 - UTILISATION DURING WELDING.....................................................................................11
H - FITTING A CCESSORIES............................................................................................................12
I - COMPONENT IDENTIFICATION ..................................................................................................14
1 - SP20/SP45 (MP2/MP5) MANUAL AND AUTOMATIC TORCHES ....................................14
2 - SP20 / MP2 MICROPLASMA WELDING TORCH ..........................................................16
3 - SP45 / MP5 MICROPLASMA WELDING TORCH ..........................................................18
PERSONAL NOTES ..........................................................................................................................20

8695 9001
II SP20/SP45 - MP2/MP5
REVISIONS
REVISION B 05/95
DESIGNATION
PAGE
Updating ISEE
6 and 7
REVISION C 07/06
DESIGNATION
PAGE
To change logo
REVISION D 02/16
DESIGNATION
PAGE
Complete update
REVISION E 07/18
DESIGNATION
PAGE
Complete update LEE

8695 9001 / E
SP20/SP45 - MP2/MP5 A-1
A - SAFETY INSTRUCTIONS
For general safety instructions, please refer to the specific manual supplied with the
equipment.

8695 9001 / E
B-2 SP20/SP45 - MP2/MP5
B - DESCRIPTION
1 - SP20/MP2 TORCH
Delivered without accessories. (Shielding nozzle, nozzle and electrode parts)
4M
8M
SP20 / MP2 manual
W000315653
W000370620
SP20 / MP2 automatic
W000315655
W000370621
2 - SP45/MP5 TORCH
Delivered without accessories. (Shielding nozzle, nozzle and electrode parts)
4M
8M
SP45 / MP5 manual
W000273236
W000315652
SP45 / MP5 automatic
W000273237
W000370619

8695 9001 / E
SP20/SP45 - MP2/MP5 C-3
C - INTRODUCTION
1 - SP20 AND SP45 MANUAL & AUTOMATIC MICROPLASMA WELDING
TORCHES
The manual and automatic torches SP20 and SP45 are specially designed for low
current plasma welding only: from 0.3 to 45 A.
They are fitted with a 4 or 8 meters long harness which can be connected to
amicro-plasma power source such as NERTAMATIC 50 or PLASMAFIX 51.
The service provided by these high-performance tools can only bemaintained if the
operating and maintenance instructions described in this technical instruction are
respected.
This is why we recommend all our customers, technical, purchasing and
maintenance departments, production supervisors and foremen to make this
instruction available to operators.
SP20 and SP45 torches are only operational when they are accompanied by their
accessory kit which is supplied separately under another reference.
2 - GENERAL SPECIFICATIONS
SP20 - MP2
SP45 - MP5
4M
8M
4M
8M
References « manu »
W000315653
W000370620
W000273236
W000315652
References « auto »
W000315655
W000370621
W000273237
W000370619
Accessory kit « manu »
W000370622
W000370622
W000315651
W000315651
Accessory kit « auto »
W000370777
W000370777
Current
20A100%
20A100%
45A100%
45A100%
Weight « manu »
1,30 kg
2,00 kg
1,45 kg
2,35 kg
Weight « auto »
0,96 kg
1,70 kg
1,30 kg
2,20 kg
Admissible electrodes
1 mm
75or150mm
2% thorium
2% lanthanium
1 mm
75or150mm
2% thorium
2% lanthanium
1 to 1,6 mm 75
or150mm2%
thorium 2%
lanthanium
1 to 1,6 mm
75or150mm
2% thorium
2% lanthanium
Cooling
FREEZCOOL
2 L/min
FREEZCOOL
2 L/min
FREEZCOOL
2,2 L/min
FREEZCOOL
2,2 L/min
Central gas
0,1 L/min à
1,0L/min
0,1L/min à
1,0L/min
0,1L/min à
1,0L/min
0,1L/minà
1,0L/min
Annular gas
2 L/min à
12L/min
2 L/min à
12L/min
2L/minà
12L/min
2L/minà
12L/min
Automatic torch fixing
It can be attached by a clip on the handle Ø 24 mm.

C - INTRODUCTION 8695 9001 / E
C-4 SP20/SP45 - MP2/MP5
3 - SP20 AND SP45 MANUAL TORCH ARC CONTROL UNIT
This control unit fits onto the handle and has two buttons:
The red button controls welding arc transfer,
The green button is used to trigger the arc extinction cycle which can only
be total if the red button is pressed again.
CONNECTION HARNESS
It is a total of 4 meters long and is protected by a PVC sheath, it has two gas hoses
and two water hoses.
Two of these hoses are doubled up with a cable which supplies the current for
welding and for the pilot arc. The second cable is for the pilot arc current return.
In addition, the SP20 / SP45 manual torches harness has the control cable fitted
with a connector which connects directly to the NERTAMATIC 50 or PLASMAFIX 51
power source.
ADMISSIBLE CONSTRICTING NOZZLES
Six current models of constricting nozzle can be chosen from the accessories kit.
They are characterised by the diameter of the plasma jet ejection orifice which itself
depends of the welding current: Ø 0,6-0.8-1-1.2-1.5-1.8 mm.
These constricting nozzles are cooled by a tapered heat exchange surface located
to the rear of each constricting nozzle.
SHIELDING GAS NOZZLES
These refractory nozzles are made of sintered alumina.
They are differentiated by their shielding diameter: 7-8-9-10-11 mm.
The choice is made depending on torch accessibility to the zone to be welded; the
largest diameter is recommended to obtain good gas shielding of the molten metal.

8695 9001 / E
SP20/SP45 - MP2/MP5 D-5
D - DIMENSIONS AND ATTACHMENT
1 - MANUAL AND AUTOMATIC TORCHES
SP20 / MP2
Manu
Auto
SP45 / MP5
Manu
Auto

8695 9001 / E
E-6 SP20/SP45 - MP2/MP5
E - DELIVERY STATE
1 - SP20/45 MANUAL AND AUTOMATIC TORCHES
SP 20/45 manual and automatic torches are supplied unequipped.
That is to say :
complete connection harness, body equipped with short electrode clamping
plug
They are only operational when accompanied by the accessory kit described
below.
ACCESSORY KITS SP20 /MP2
Ref : W000370622 (Manu)
Ref : W000370777 (Auto)
This kit contains the following parts:
3 constricting nozzles Ø 0.6 mm
3 constricting nozzles Ø 0.8 mm
3 constricting nozzles Ø 1.0 mm
3 constricting nozzles Ø 1.2 mm
2 electrode holder clamps for electrodes Ø 1 mm
1 alumina gas nozzles Ø 8 mm
1 alumina gas nozzles Ø 10 mm
2 centering collars for electrode Ø 1.0 mm
2 electrode centering devices Ø 1 mm
2 nozzle seals
2 clamping plug seals
1 electrode positioning tool (manual)
1 electrode positioning tool (automatic)
5 electrodes Ø 1 mm
2 fixing nuts (automatic)
ACCESSORY KITS SP45 /MP5
Ref : W000315651
This kit contains the following parts:
2 constricting nozzles Ø 0.8 mm
2 constricting nozzles Ø 1.0 mm
2 constricting nozzles Ø 1.2 mm
2 constricting nozzles Ø 1.5 mm
2 constricting nozzles Ø 1.8 mm
2 electrode holder clamps for electrodes Ø 1 mm
2 electrode holder clamps for electrodes Ø 1.6 mm
1 alumina gas nozzle Ø 7 mm
1 alumina gas nozzle Ø 9 mm
1 alumina gas nozzle Ø 11 mm
2 centering collars for electrode Ø 1.0 mm
2 centering collars for electrode Ø 1.6 mm
2 electrode centering devices Ø 1 mm
2 electrode centering devices Ø 1.6 mm
2 nozzle seals
2 clamping plug seals
1 electrode positioning tool
5 electrodes Ø 1 mm
5 electrodes Ø 1.6 mm