NURIS MIG 550 RWS Quick start guide

08/2022 Rev. 1.3
OPERATIONAL MANUAL
MIG/MAG 550 RWS
EN

08/2022 Rev. 1.3
All rights reserved by Nuriş Teknoloji A.Ş. Reproduction of all or any part of this document is
prohibited without the written permission of Nuriş Teknoloji A.Ş. Information and images in this
document are subject to change without notice by Nuriş Teknoloji A.Ş.

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CONTENTS
Contents.......................................................................................................... i
Safety............................................................................................................ ii
Electromagnetic Compatibility (EMC) ...................................................................... iii
Technical Specifications ......................................................................................iv
1.Introduction .................................................................................................. 1
2.Connection Guide............................................................................................ 2
2.1. Power Connection..................................................................................... 2
2.2. Welding Power Supply To Wire Feeder Connection............................................... 2
2.3. Torch Connection ..................................................................................... 3
2.4. Gas Connection ........................................................................................ 4
2.5. Installing the Welding Wire .......................................................................... 4
2.5.1 Placing the Wire Spool ........................................................................... 4
2.5.2 Wire Feeding System ............................................................................. 5
3.Storage and Installation..................................................................................... 6
3.1. Storage and Operation Environment................................................................ 6
3.2. Transportation......................................................................................... 6
3.3. Installation ............................................................................................. 7
4. Operation .................................................................................................... 7
Tips and Tricks .............................................................................................. 8
5. Maintenance and Trouble Shooting....................................................................... 8
5.1. Perıodic Maintenance................................................................................. 8
5.1.1. Daily Maintenance................................................................................ 8
5.1.2. Quarterly Maintenance .......................................................................... 9
5.1.3. Semi-Annually Maintenance..................................................................... 9
5.2. Non-Periodic Maintenance ........................................................................... 9
5.3. Possible Problems and Errors ........................................................................ 9
6. Transportation .............................................................................................12
7. Manufacturer Company ...................................................................................12
8. Service.......................................................................................................12

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SAFETY
Please read this manual carefully before operating the equipment. This device
should be used only by qualified personnel. Safe operation is only possible with
understanding the possible risks for health and correct operation of the device.
Nuriş Teknoloji is not responsible for any injury, death, or malfunction of the
device due to the improper use or lack of understanding for the identified risks.
ELECTRIC SHOCK CAN KILL: Arc welding machines can generate high voltages
during the operation. Do not touch the live parts such as electrode clamp, work
clamp or electrode. Always use the insulated part of the electrode clamp. Wear
protective insulating gloves to prevent risk of electric shock. Do not touch any
damaged cables.
FUMES AND GASES CAN BE DANGEROUS: Welding may produce fumes and
gases hazardous to health. Avoid breathing these fumes and gases. To avoid
these dangers, the operator must use enough ventilation or exhaust to keep
fumes and gases away from the breathing zone.
ARC RAYS CAN BURN: Use a shield with the proper filter and cover plates to
protect your eyes from sparks and the rays of the arc when welding or
observing. Use suitable clothing made from durable flame-resistant material to
protect you skin and that of your helpers. Protect other nearby personnel with
suitable, non-flammable screening and warn them not to watch the arc nor
expose themselves to the arc.
WELDING SPARKS CAN CAUSE FIRE OR EXPLOSION: Remove fire hazards from
the welding area and have a fire extinguisher readily available. Welding sparks
and hot materials from the welding process can easily go through small cracks
and openings to adjacent areas. Do not weld on any tanks, drums, containers,
or material until the proper steps have been taken to ensure that no flammable
or toxic vapors will be present.
ELECTRIC AND MAGNETIC FIELDS MAY BE DANGEROUS: Electric current
flowing through any conductor creates electric and magnetic fields (EMF). EMF
fields may interfere with some pacemakers, and welders having a pacemaker
should consult their physician before operating this equipment.
WELDED MATERIALS CAN BURN: Welding generates a large amount of heat.
Hot surfaces and materials in work area can cause serious burns. Use gloves
and pliers when touching or moving materials in the work area.

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ELECTROMAGNETIC COMPATIBILITY (EMC)
This machine has been designed in accordance with all relative directives and norms.
However, it may still generate electromagnetic disturbances that can affect other
systems like telecommunications (telephone, radio, and television) or other safety
systems. These disturbances can cause safety problems in the affected systems. Read
and understand this section to eliminate or reduce the amount of electromagnetic
disturbance generated by this machine.
Before installing the machine, the operator must check the work area for any devices
that may malfunction because of electromagnetic disturbances. Consider the
following:
Input and output cables, control cables, and telephone cables that are in or
adjacent to the work area and the machine,
Radio and/or television transmitters and receivers,
Computers or computer-controlled equipment,
Safety and control equipment for industrial processes,
Personal medical devices like pacemakers and hearing aids,
Equipment for calibration and measurement.
Check the electromagnetic immunity for equipment operating in or near the
work area. The operator must be sure that all equipment in the area is
compatible. This may require additional protection measures.
The dimensions of the work area to consider will depend on the construction of
the area and other activities that are taking place.
If any electromagnetic disturbances are detected the operator must put in place
corrective actions to eliminate these disturbances. Consider the following guidelines to
reduce electromagnetic emissions from the machine:
Connect the machine to the input supply according to this manual. If
disturbances occur if may be necessary to take additional precautions such as
filtering the input supply.
The output cables should be kept as short as possible and should be
positioned together.
If possible, connect the work piece to ground to reduce the electromagnetic
emissions. The operator must check that connecting the work piece to
ground does not cause problems or unsafe operating conditions for personnel
and equipment.
Shielding of cables in the work area can reduce electromagnetic emissions. This
may be necessary for special applications.

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TECHNICAL SPECIFICATIONS
The technical specifications for MIG/MAG 550 W-RWS are given in the Table 1.
Table 1. MIG/MAG 550 W-RWS Technical Specifications
TECHNICAL PROPERTIES
UNIT
VALUE
Utility Voltage
V AC
3x380 ± %10
Utility Frequency
Hz
50
Input Power
kVA
23
Input Current
A
27,5
Welding Current
A
50 - 500
Welding Voltage
V
18 –46
Open Circuit Voltage
V
46
%100 Duty
A
350
%60 Duty
A
500
Current Setting
A
4x10 Stages
Welding wire feed rate
m/min
2.0 –20.0
Welding Wire Diameter
Mm
0.80 –1.00 –1.20
Protection Class
IP
IP23S
Weight
kg
Power Supply: 177
Wire Feeder: 23
Machine Dimensions
mm
WxHxD
515x915x1025
Welding Cable Length
m
3
For any maintenance or repair operations it is recommended to
contact the nearest technical service center or Nuriş Teknoloji.
Maintenance or repairs performed by unauthorized service centers
or personnel will null and void the manufacturer’s warranty.

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1.INTRODUCTION
MIG/MAG 550A-RWS and MIG/MAG 550W-RWS are professional, easy-to-use, compact,
reliable, robust, economical and semi-automatic MIG/MAG welding machine with
excellent welding characteristics, offering the ability to weld all solid and cored wire
types. MIG/MAG 550-RWS, provides precise voltage adjustment with 4 coarse, 10 fine,
40 steps in total.
MIG / MAG 550 W-RWS gas metal welding machine has two main parts. The wire feeder
unit names NSK 4-C and welding power supply.
Figure 1. MIG/MAG 550W-RWS front view
Welding Power Supply: Power
transformer and DC rectifier group
that provides the voltage and
current required for welding. The
user parts are:
a. On-Off Switch
b. Welding fine voltage selection
switch
c. Welding coarse voltage
selection switch
d. Welding current indicator
e. Welding voltage indicator
f. Chassis output connector with
low smoothing inductance
g. Chassis output connector with
higher smoothing inductance
NSK 4-C Wire Feeder Unit: This unit
feeds the welding wire through
welding torch. These parts are:
h. Water inlet quick coupling (red)
i. Water outlet quick coupling
(blue)
j. Power and torch trigger
indicator LED
k. Two pulse or four pulse torch
trigger selection
l. Welding torch connector
m. Wire speed indicator
n. Wire speeds adjust buttons

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2.CONNECTION GUIDE
WARNING: The installation and first operation of the machine should
be done by authorized technical personnel.
2.1. POWER CONNECTION
Figure 2.1. Power Connection
Welder power supply works with three phase 380 Volt
50Hz utility power. The energy input cable is located at
the rear of the welder power supply. The yellow-green
cable (Figure 2.1-PE) should be connected to protective
earth. The remaining cables are the three phase
connections (Figure 2.1-a). The phase order is not
important, thus, connect the three phase cables to the
phase supply of the utility.
2.2. WELDING POWER SUPPLY TO WIRE FEEDER CONNECTION
Figure 3.1. Welding power
supply rear view
The welding power supply provides (Figure 3.1) water cooling
heat exchange and pressure pump (Figure 3.1-c), welding
current (Figure 3.1-d) and supply current to the wire feeder
(Figure 3.1-d). The connection between these two units is
made by provided extension cable with welding cable, trigger
cable, pressured water inlet and outlet hoses packed in a
flexible hose.
WARNING: The power supply power must be connected to utility power
supply through suitable fuse with correct power rating and delay.

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Figure 3.2. Wire feeder unit
rear view
Connect the water-cooling tubes between the power unit and
wire feeder unit (Figure 3.1-) (Figure 3.2-c) using the extension
cable provided by the product (the connections are at the rear
of the wire feeder unit and welding power supply unit). The
color coding of the extension cable and the quick coupling of the
units should match. Check this point twice (blue and red).
Connect the wire feeder unit power connector (Figure 3.1-b)
(Figure 3.2-b) and lock it with the metal locker on the
connector.
Connect the gas supply connector (Figure 3.1-a) (Figure 3.2-a).
Finally, connect the torch welding current cable (Figure 3.1-d)
(Figure 3.2-d) and fix it firmly.
2.3. TORCH CONNECTION
Connect the torch to the connector (Figure 1-l)and tighten the plastic screw gently for
a proper connection.
Connect the cooling pipes of the torch to the quick couplings (Figure 1-h)and (Figure 1-
i)in front of the wire feeder unit.
Connect the chassis cable into (Figure 1-f) or (Figure 1-g). The chassis cable should be
connected to the work piece with the lowest possible electrical resistance for proper
welding.
Connect the end of the negative cable to the negative output terminal of the machinery.
WARNING: Never use water-cooled torches without water cooling.
Otherwise, the torch may be damaged.

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2.4. GAS CONNECTION
Argon or Argon + Helium is used for welding
aluminum, magnesium, copper and their
alloys of non-ferrous metals, and Argon +
Oxygen mixed gases are used for welding
stainless steels.
Oxygen ratio must never exceed 3% in
welding stainless steels.
Attach the gas connection hose and
regulator to the tube, loosen the
adjustment screw and turn on the gas and
adjust the gas flow by tightening the
adjustment screw.
If CO2gas is to be used, CO2heater should be connected. There is a power plug for CO2
heater (Figure 4-a) at the rear of the welding power unit. It provides 220V supply.
WARNING: The 220 Volt 120-Watt socket located at the back of the
machine is only for the heater. Do not use it for other purposes. It can
damage the machine.
2.5. INSTALLING THE WELDING WIRE
Before installing the welding wire, wear gloves to prevent corrosion
of the wire and injury to your hand.
2.5.1 PLACING THE WIRE SPOOL
The wire adapter shown in Figure 5.1-b is opened by turning it. The welding wire reel is
placed in the wire feeder unit of the welding machine with the wire coming from below
and the adapter is tightened again.
Gas Button (Figure 5.1-c): During gas cylinder replacement or gas related connections,
the gas valve can be opened by pressing this button. Thus, it can be checked whether
the gas is coming smoothly or not.
Wire Feeding Button (Figure 5.1-d): This button is used to ensure that the wire feeder
motor rotates during the insertion of the welding wire. When the wire is finished, the
wire should be driven by pressing this button until the wire comes out of the tip of the
torch after the new wire is inserted.
Figure 4. Gas heater connector

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Tightening the screw too much can slow down the speed of the wire
being fed and cause machine malfunctions, while under tightening
the screw can cause the wire spool to become tangled. Therefore,
the tightening of the screw nut must be well adjusted for a nice and
effective weld.
2.5.2 WIRE FEEDING SYSTEM
In Figure 5.1, the view that will appear when the cover of the wire feeder is opened is
shown.
After placing the welding wire
reel(Figure 5.1-a) it is passed through
the wire channel and brought to the
entrance of the wire feeding.
Figure 5.1. Wire Feed Mechanism
The reel screws in Figure 5.2-c are
unscrewed and removed. After the
screws are unscrewed, the fixing cover of
the wire feeder reel drops automatically
and the wire drive reels are reached.
Figure 5.2. Wire Feed Motor
The wire drive reels are shown Figure
5.3. The reels are marked according to
the wire diameter used. Select the wire
drive reels according to the thickness
and type of wire you will use. V-grooved
wire feed reels are used for steel and
stainless steel and U-grooved ones are
used for aluminum. Also corrugated V-
grooves are used for cored wires.
Figure 5.3. Control Panel

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The welding wire is stretched from the 1st guide shown in Figure 5.4 and driven onto
the wire reel. The wire passed through the guide is inserted into the wire drive reel
channel as shown in Figure 5.4-2. The wire passed through the reels is passed through
the direction guide as in Figure 5.4-3, and the manual driving process is completed.
After the manual driving process is completed, overprints are closed(Figure 5.4-4). By
pressing the wire feed button, the wire is fed until the wire comes out homogeneously
from the tip of the torch.
If the pressure setting is too high, crushing may occur on the wire. The
round structure of the wire may be disrupted and problems may occur
while passing through the torch. In addition, the problem of clogging
in the contact nozzle may be encountered. If the pressure is low, the
wire will be loose and the wire feeding will not be homogeneous. When
adjusting the pressure, it is done from loose to tight.
3.STORAGE AND INSTALLATION
3.1. STORAGE AND OPERATION ENVIRONMENT
The machine should be stored in a closed and dry environment between -30 oC
and +55 oC.
It should be kept upright and nothing should be put on it.
Operating temperature must be between -25 oC and +40 oC and it should be
operated in a dry environment.
Make sure that the machine can breathe easily while working.
Dirt and dust in the environment should be at minimum.
3.2. TRANSPORTATION
Always use the handles when moving the machine.
Never pull on cables, torch or hoses.
Before moving make sure that the machine is turned off and disconnected from
the grid.
Before transporting, remove all interconnections.
Gas cylinders and small parts must be transported separately from the machine.
Figure 5.4. Wire Feed System

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Chains and/or ropes to be used during transportation should be of equal length,
equal load distribution should be ensured and the machine should be lifted in
a balanced way.
The relevant regulations of the country of use, occupational safety and
accident prevention rules should be taken into account.
During transport, nobody should be in the dangerous area under the machine.
3.3. INSTALLATION
Put the welding machine in a place that you can easily access during work.
The welding machine should not be close enough to adversely affect the
operation of the operator.
The machine must be placed in a way it can easily breathe from the air inlets.
Make sure that the environment is not wet and too humid.
Make sure that the dust and dirt that can get into the machine are kept at
minimum.
Cables should not be stacked on top of each other, cables and machine should
be on the same side of the operator and as far away from the operator as
possible. Cables should not be around the operator and scattered around.
The gas cylinder should be away from the welding area, should not get hot and
should not be affected by welding sparks.
The machine should not be placed near electromagnetic devices during
operation and storage.
The machine should not be placed in places with a slope of more than 10°.
Make sure that the machine is stable before use.
4. OPERATION
1. Adjust the desired welding voltage with fine (Figure 1-b) or coarse (Figure 1-c)
range selection switches.
2. To turn-on the welder power unit, toggle (Figure 1-a) power switch to “On”
position.
3. Check the selected voltage level from the display (Figure 1-e).
4. Check that power is supplied to wire feeder unit with power LED (Figure 1-j)
on.
5. Using the wire speed screen (Figure 1-m) adjust the desired wire speed by using
increment and decrement buttons (Figure 1-k).
6. The two trigger or four trigger torch mode can be selected by button (Figure 1-
k). The selection can be seen with the relevant LED on the machine.
7. The welding current can be observed on indicator (Figure 1-d) during welding.
8. The torch trigger status can be observed by LED (Figure 1-j).

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TIPS AND TRICKS
5. MAINTENANCE AND TROUBLE SHOOTING
Before starting the maintenance, disconnect the machine from the
power supply and make sure that there is no voltage on it.
Maintenance can be done by the user.
All the electrical connections should be checked regularly.
Maintenance, repair or any modification to the machine cannot be made by applying
different or incorrectly what is described in this manual.
Repairs and modifications should only be carried out by authorized persons in order
to prevent possible injuries and damage to the machine.
The machine may be out of warranty as a result of unauthorized intervention.
The device does not require maintenance in the specified conditions, but some
points should be considered for its high efficiency and long-lasting operation.
The periods specified below are the periods to be followed in case the device does
not encounter any problems. These periods can be shortened according to the
density and pollution of the working environment.
5.1. PERIODIC MAINTENANCE
5.1.1. DAILY MAINTENANCE
Before operating the machine, the electrical power supply cable and
welding cables must be visually inspected. If there is any crushing, peeling
or breakage in the cables, the service should be notified.
Figure 6. Welding wire driver
To feed wire without shielding gas,
press buttons (Figure 6-d) and
(Figure 6-a) simultaneously.
To purge shielding gas without
feeding welding wire, press buttons
(Figure 6-d) and (Figure 6-b)
simultaneously.

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Check whether the welding cables and torch terminals are tight and
suitable. Tighten if loose.
Daily maintenance should be done by the person who will perform the
welding process.
5.1.2. QUARTERLY MAINTENANCE
Crushed, frayed or broken cables or cords should be maintained and replaced with
new ones if necessary.
5.1.3. SEMI-ANNUALLY MAINTENANCE
Electrical power supply connectors must be checked and tightened if loose.
Side caps should be opened and all energy connections here should be tightened.
All accessible bolts and nuts should be checked and loose ones should be tightened
in the body and other parts of the machine.
Dust accumulated in the machine should be cleaned with compressed dry air. If the
machine is used in very dirty environments, this process should be done in periods
shorter than six months.
5.2. NON-PERIODIC MAINTENANCE
Special care should be given for welding chassis cable and torch connections. These
connections carry high currents and should be kept clean for any risk of high
temperature rise.
The consumables on the torch should be cleaned regularly and replaced if
necessary.
For a good welding quality, if the welding wire is rusted or corroded, it should be
replaced with a new one.
If the labels on the device are dirty and difficult to read, clean them.
5.3. POSSIBLE PROBLEMS AND ERRORS
Before troubleshooting, please check all power connections. The mains connection is a
three-phase system. Always check the rated voltage level for each phase. The welding
power supply may reduce performance in case of single-phase loss.

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Refer to the troubleshooting table given below:
Most Common Power Supply Problems
Possible causes and solutions
Wire drive reels spins but wire does
not come through
* The compression spring pressing the
wire feed
spools are not in place or is loose.
* The torch lead is bent excessively or
the spiral guide inside the torch is
clogged.
* The contact part is blocked.
* Depending on the wire diameter used,
the wrong groove was used in the wire
feed spool.
* The wire is not placed correctly in the
spool
groove.
* Suitable welding wire is not used.
Irregular wire feed
* The contact part is deformed.
* The wire feed spools are dirty or worn.
* Wrong groove is used in the wire feed
spool.
* The spiral guide inside the torch is
clogged.
* Suitable welding wire is not used
The arc does not start
* Welding cable is not connected
properly.
* The contact part is deformed
* Earth clamp not connected correctly
The welding parameters such as wire feed speed, welding voltage and shielding gas
flow rate should be adjusted correctly to achieve a good quality weld.

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The common problems identified for a good quality weld are given in the below table
Most Common Welding Quality Problems
Possible causes and solutions
Long and unstable arc
* Welding voltage is of high value
according to wire diameter and wire
feed speed
Powerless arc
* Welding voltage is of low value
according to the wire diameter and wire
feed speed
Droplets are splashing
* The voltage is too high
* The gas nozzle is not cleaned properly
* Wire speed is set incorrectly
Insufficient welding filling
* Welding speed is higher than it should
be
* Wire feed speed is lower than welding
speed
* Wire diameter is not suitable for the
job
Porous welding
* The gas level is too low or too high
* Splashed droplets accumulate in the
gas nozzle and cause insufficient gas
flow
* The air flow in the welding area
neutralizes the shielding gas
* The material to be welded may be
moist, oily, rusty
Bad welding filling
* Irregular use or incorrect contact part
is used
* Low welding voltage selected
* Irregular welding speed used
Uneven welding
* Wire speed is very high compared to
the voltage value
* Welding speed is very low
Penetration is insufficient
* Wire feed speed is very low compared
to voltage
The wire feeder and welding power source is manufactured in accordance with TS-EN
60974-1. The service lifetime is 10 (ten) years.

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6. TRANSPORTATION
Move the machine with the top up.
Protect against getting wet.
Protect against impacts.
Do not stack the machine.
7. MANUFACTURER COMPANY
NURİŞ TEKNOLOJİ ve MAKİNE SAN. TİC. A.Ş.
Ankara Organize Sanayii Bölgesi Ahi Evran OSB Mah. Babürşah Cad. No: 2 06935 Sincan-
ANKARA TÜRKİYE
Phone: [phone] Web: www.nuris.com.tr
8. SERVICE
Please refer to www.nuris.com.tr for the most update list of local representatives and
authorized technical service lists. If there is no accessible technical service in the
territory, the default technical service contact info is given below:
NURİŞ TEKNOLOJİ ve MAKİNE SAN. TİC. A.Ş.
Ankara Organize Sanayii Bölgesi Ahi Evran OSB Mah. Babürşah Cad. No: 2 06935 Sincan-
ANKARA TÜRKİYE
Phone: [phone] Web: www.nuris.com.tr

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NOTES:

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Nuriş Teknoloji A.Ş.
Ahi Evran OSB Mah. Babürşah Cad. No:2
06935 Sincan- Ankara / Türkiye
[email protected]
[phone]
[phone]
www.nuris.com.tr