Lincoln Electric W000315558 Mounting instructions

GAS FLOW PROGRAMMER
RDM PLASMA
SAFETY INSTRUCTIONS FOR USE AND MAINTENANCE
DEVICE No W000315558 - W000315559 - W000315560
EDITION : EN Instructions for use REF: 8695 5535
REVISION : L
DATE : 06-2018 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 5535
RDM PLASMA I
CONTENTS
A - IDENTIFICATION.........................................................................................................................1
B - SAFETY INSTRUCTIONS............................................................................................................2
C- DESCRIPTION ..............................................................................................................................3
1 - REMINDER.........................................................................................................................3
2 - NEED FOR A PROGRAMMER...........................................................................................4
3 - DESCRIPTION....................................................................................................................5
4 - OVERALL DIMENSIONS OF THE GAS UNIT ...................................................................6
D - ASSEMBLY AND INSTALLATION..............................................................................................8
1 - RDM CONNECTION DIAGRAM.........................................................................................8
2 - CONNECTIONS..................................................................................................................9
E - OPERATOR’S MANUAL..............................................................................................................10
F - MAINTENANCE............................................................................................................................11
1 - TROUBLESHOOTING CHART...........................................................................................11
2 - SPARE PARTS...................................................................................................................12
PERSONAL NOTES ..........................................................................................................................16

8695 5535
II RDM PLASMA
INFORMATIONS
DISPLAYS AND PRESSURE GAUGES
The measuring devices or displays for voltage, current, speed, pressure, etc., whether analog or digital, should be
considered as indicators
For operating instructions, adjustments, troubleshooting and spare parts see safety instructions for use and
maintenance
ISEE No. GAS SUPPLEMENT 8695 5511
REVISIONS
REVISION B 01/05
DESIGNATION
PAGE
Update
9-19-20
REVISION C 11/05
DESIGNATION
PAGE
OVERALL dimensions OF the GAS UNIT
C7
REVISION D 07/06
DESIGNATION
PAGE
To change logos
-
REVISION E 09/08
DESIGNATION
PAGE
Complete update + spareparts newoffer
-
REVISION F 06/10
DESIGNATION
PAGE
Update
D-8 ;F-20
REVISION G 10/10
DESIGNATION
PAGE
Update => Valve unit
REVISION H 01/11
DESIGNATION
PAGE
Spare parts
REVISION I 03/13
DESIGNATION
PAGE
Spare parts

8695 5535
RDM PLASMA III
REVISION J 07/13
DESIGNATION
PAGE
NERTAMATIC Plus
REVISION K 10/15
DESIGNATION
PAGE
Update « Spare parts »
F-13
REVISION L 06/18
DESIGNATION
PAGE
To change logos

8695 5535
IV RDM PLASMA

8695 5535 / L
RDM PLASMA A-1
A - IDENTIFICATION
Please enter the number of your equipment in the following box.
Quote this information in all correspondence.
1
Manufacturing factory code
4
Year manufactured
2
Manufacturing year code
5
Product type
3
Product serial no.

8695 5535 / L
B-2 RDM PLASMA
B - SAFETY INSTRUCTIONS
For general safety instructions, please refer to the specific manual supplied with
the equipment.

8695 5535 / L
RDM PLASMA C-3
C- DESCRIPTION
1 - REMINDER
With automatic keyhole plasma welding, any of the following defects may occur if the arc
is switched off suddenly with no precaution:
The plasma jet hole remains.
The hole disappears but the high plasma gas flow and the decreasing intensity leads
to gouging in the metal that is being solidified, with the appearance of blow holes.
These defects are not generally critical in the case of longitudinal welding, as the weld
bead often starts and ends on end plates. But they are not acceptable in circular welding. In
that case, you must use a gas flow programmer, which is used to control the decrease in the
flow of plasma gas for a given welding cycle, in order to eliminate the defects described
above in a reliable and reproducible way.

C- DESCRIPTION 8695 5535 / L
C-4 RDM PLASMA
2 - NEED FOR A PROGRAMMER
AREA 1 = Through jet welding area
AREA 2 = Area where the plasma gas flow associated with appropriate intensity leads to
welding similar to TIG welding (no keyhole).
AREA 3 = Transit area (risk of defects)
The problem of the fading phase consists in moving from area 1 to area 2 without any
defect:
For conventional stainless steel grades up to 4 mm, area 3 is narrow and the switch-off
cycle is easy to create by controlling the plasma gas flow and the welding intensity.
While welding more delicate grades and for thicknesses of 5 mm or more, you need to
control not only the plasma gas flow and the welding intensity during the switch-off phase, but
also the movement of the torch relative to the part, the arc voltage sensing and the filler
material.