Ozito MWR-090 User manual

MIG WELDER
90A
Gasless
Instruction Manual
3 Year Replacement Warranty
MWR-090
CAUTION: Read this instruction manual before using this tool.
To view the full range visit: www.ozito.com.au
0112

Input: 230-240V ~ 50Hz
Current range: 65 – 90 Amp
Duty cycle: 25% @ 65A
Welding wire size: 0.8 - 0.9mm Flux-cored wire
Insulation type: Earthed appliance (class I)
Welding wire spool weight: 0.2kg - 5kg
Weight: 16.6kg
Front Back
SPECIFICATIONS - MODEL NO. MWR-090
2
1. Earth clamp
2. Torch tip
3. Shroud
4. MIG Torch
5. On/off switch
6. Overload protection LED
7. Carry handle
8. Min./max. voltage control switch
8
11
15
12
2
4
7
9
1
14
10
13
3
5
6
9. Wire Speed & wire current adjustment knob
10. Internal cooling fan
11. Welding mask
12. Combination chipping hammer & wire brush
13. Side cover
14. Side cover release lever
15. Mains cable & plug
KNOW YOUR PRODUCT

TABLE OF CONTENTS
3
SPECIFICATIONS……………………………………………
KNOW YOUR PRODUCT………………………………….
INTRODUCTION…………………………………………….
ELECTRICAL SAFETY………………………………………
GENERAL SAFETY INSTRUCTIONS………………………
SAFETY INSTRUCTION FOR WELDERS………………….
ADDITIONAL SAFETY INSTRUCTIONS
FOR MIG WELDERS………………………………………..
ASSEMBLY……………………………………………………
OPERATION…………………………………………………
MAINTENANCE……………………………………………..
TROUBLESHOOTING………………………………………
SPARE PARTS………………………………………………..
DESCRIPTION OF SYMBOLS………………………………
PACK CONTENTS………………………………………….
WARRANTY………………………………………………….
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Page 14
Page 15
Page 18
Page 20
Page 21
Page 24

INTRODUCTION
4
ELECTRICAL SAFETY
WARNING! When using mains-powered equipment, basic safety
precautions, including the following, should always be followed to reduce
the risk of fire, electric shock, personal injury and material damage.
Please read and understand the manual prior to operating this tool.
Save these instructions and other documents supplied with this tool for future reference.
The electric motor has been designed for 230V and 240V only. Always check that
the power supply corresponds to the voltage on the rating plate.
Note: The supply of 230V and 240V on Ozito tools are interchangeable for
Australia and New Zealand.
If the supply cord is damaged, it must be replaced by a qualified electrician or a
power tool repairer in order to avoid a hazard.
Note: Double insulation does not take the place of normal safety precautions when
operating this tool. The insulation system is for added protection against injury
resulting from a possible electrical insulation failure within the tool.
Using an Extension Lead
Always use an approved extension lead suitable for the power input of this
electrical equipment. Before use, inspect the extension lead for signs of damage,
wear and ageing. Replace the extension lead if damaged or defective. When using
an extension lead on a reel, always unwind the lead completely.
Use of an extension lead not suitable for the power input of the equipment, or
which is damaged or defective, may result in a risk of fire and electric shock.
It is recommended that the extension lead is a maximum of 25m in length. Do not
use multiple extension leads.
Congratulations on purchasing an Ozito Gasless MIG
Welder. We aim to provide quality tools at an
affordable price.
We hope you will enjoy using this tool for many years.
The Gasless MIG Welder MWR-090 has been designed
for home projects and is ideal for use on trailers, gates,
all steel sections, car panels, thin materials and
general fabrication.
This product is intended for DIY use only.
!
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5
GENERAL SAFETY INSTRUCTIONS
WARNING! Read all instructions. Failure to follow all instructions listed
below may result in electric shock, fire and/or serious injury. The term
"power tool" in all of the warnings listed below refers to your mains-
operated (corded) power tool or battery-operated (cordless) power tool.
Save these instructions
1. Keep work areas clean. Cluttered work areas and benches can cause accidents.
2. Consider work area environment. Do not expose your equipment to high
humidity or rain. Do not use your equipment in damp or wet conditions. Keep
the work area well lit. Do not use your tool where there is a risk of causing fire
or explosion, e.g. in the presence of flammable liquids and gases.
3. Keep children away. Do not allow children, visitors or animals to come near
the work area or to touch the equipment or accessories.
4. Dress appropriately. Wear the appropriate protective clothing. Wear a protective
hair covering to keep long hair out of the way.
5. Guard against electric shock. Prevent body contact with earthed or grounded
surfaces. Electrical safety can be further improved by using a high sensitivity (30
mA / 30 mS) residual current device (RCD).
6. Do not overreach. Keep proper footing and balance at all times.
7. Stay alert. Watch what you are doing. Use common sense. Do not operate the
equipment when tired.
8. Secure work piece. If required, use clamps or a vice to hold the work piece.
9. Extension leads. Before use, inspect the extension leads and replace if
damaged. When using the equipment outdoors, only use extension leads
intended for outdoor use and marked accordingly.
10. Use appropriate equipment. Only use the equipment as outlined within this
instruction manual. Do not force the equipment to do the job of heavier duty
equipment. The equipment will do the job better and safer at the rate for
which it was intended. Do not force the equipment.
WARNING! The use of any accessory or attachment, or performance of
any operation with this equipment, other than those recommended in this
instruction manual may present a risk of personal injury.
11. Check for damaged parts. Before use carefully check the equipment and
power lead for damage. Check for misalignment and seizure of moving parts,
breakage of parts, damage to guards and switches and any other conditions
that may affect its operation. Ensure the equipment will operate properly and
perform its intended function. Do not use the equipment if any parts are
damaged or defective. Do not use the equipment if the switch does not turn it
on and off. Have any damaged or defective parts repaired or replaced by an
electrician or a power tool repairer. Never attempt any repairs yourself.
12. Unplug the equipment. Unplug the equipment when it is not in use, before
changing any parts, accessories or attachments and before servicing.
!
!
!
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6
SAFETY INSTRUCTIONS FOR WELDERS
GENERAL SAFETY INSTRUCTIONS (cont.)
13. Do not abuse the cord. Never carry the equipment by its cord or pull it to
disconnect from the socket. Keep the cord away from heat, oil and sharp
edges.
14. Store equipment. When not in use, equipment should be stored in a dry,
locked up or high place, out of reach of children.
15. Maintain mains equipment with care. Keep the equipment clean and in
good condition for better and safer performance. Follow the instructions for
maintenance and changing accessories. Keep handles and switches dry, clean
and free from oil and grease.
16. Have your tool repaired by an electrician or a power tool repairer. This
power tool complies with relevant safety requirements. To avoid danger,
electrical equipment must only be repaired by qualified technicians using
original spare parts; otherwise this may result in considerable danger to the user.
17. Users. This equipment is not intended for use by young children or infirmed
persons without supervision. Young children should be supervised to ensure
that they do not play with this equipment.
18. Replacement of the supply cord. If the supply cord is damaged, it must be
replaced by an electrician or a power tool repairer in order to avoid a hazard.
Under no circumstances should the housing of the welder be opened.
Always protect your eyes and face with a welding mask.
Wear appropriate protective clothing such as a welding apron and sleeved gloves etc.
Avoid exposing skin as UV rays are produced by the arc.
Screen off the work place to protect others working nearby from UV rays.
Welding materials with contaminated surfaces may generate toxic fumes. Ensure
the surface is clean before welding. Avoid operating on materials cleaned with
chlorinated solvents or near such solvents.
Do not weld metal equipment that holds/contains flammable materials, gases or
liquid combustibles.
Zinc-plated or galvanized material should not be welded as the fumes created are
highly toxic.
Do not use the welder in damp or wet conditions.
Do not use cables with worn insulation or loose connections.
Disconnect from the power supply before replacing electrodes or welding wire.
Avoid direct contact with the welding circuit.
Do not use the welder to defrost piping.
Ensure the welder is placed on a level surface to prevent overturning.
Provide adequate ventilation or a means for removal of the welding fumes produced
(forced circulation using a blower or fan).

ADDITIONAL SAFETY INSTRUCTIONS MIG WELDERS
7
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety.
Recommendations for the use of a residual current device with a rated residual
current of 30mA or less.
Fumes
Toxic gases are given off during the INVENT MIG welding process, which may collect
in the welding area if the ventilation is poor. Be alert at all times to the possibility of
fume build-up. In small or confined areas, use a fume extractor.
Glare
The electric arc generated by the INVENT MIG process gives direct heat and
ultraviolet radiation. It is essential that the eyes of the operator and bystanders are
protected from the glare during welding.
ALWAYS USE A FACESHIELD OR WELDING HELMET FITTED WITH THE CORRECT
GLASS FILTER.
Heat
It is desirable that welding gloves are worn whilst welding. They will protect the hands
from ultra-violet radiation and direct heat from the arc.
OVERALLS should also be worn. They should be of type designed to be buttoned at
the wrists and the neck.
Dress
In addition to a face shield, welding gloves and overalls, other types of protective
clothing should be worn when welding. Additional protective clothing such as a leather
apron, sock protectors and a hat will all assist in reducing any injuries due to heat,
sparks and slag produced during welding.
If the supply cord is damaged, it must be replaced by an electrician or a qualified
power tool repairer.

Fitting the Welding Wire 0.2kg coil (Fig.1)
This welder is supplied with a .2kg coil of gasless welding wire (c). Welding wire
up to 5kg can be fitted to this welder.
Remove the coil retaining nut (f) by rotating anti-clockwise. Remove the spring (e),
and remove the drive washer (d) from the welding wire drive shaft (a).
Slide the .2kg coil (b) onto the wire drive shaft (a).
Align the drive washer (d) flat side with the flat side on the wire drive shaft (a) and
slide the drive washer (d) onto the wire drive shaft (a).
Re-fit the spring (e) then the coil retaining nut (f) by rotating clockwise onto the
wire drive roller shaft (a) but do not over tighten.
Fitting a Welding Wire 5.0kg Coil (Fig. 1)
Remove the coil retaining nut (f) by rotating anti-clockwise. Remove the spring (e),
and remove the drive washer (d) from the welding wire drive shaft (a).
Slide the 5.0kg wire coil (b) onto the wire drive shaft (a) and then the 5.0kg coil of
wire onto the backing flange (c).
Align the drive washer (d) flat side with the flat side on the wire drive shaft (a) and
slide the drive washer (d) onto the wire drive shaft (a).
Re-fit the spring (e) then the coil retaining nut (f) by rotating clockwise onto the
wire drive roller shaft (a) but do not over tighten.
Wire Drive Roller Size
Caution: It is critical that you choose the right wire drive roller (k) groove size.
There are two different size wire drive roller grooves machined into the outer
surface of the wire drive roller (k) for a a Gasless MIG welder.
Flux-cored welding wire (0.8mm and 0.9mm) is required to operate this welder.
Open the side cover (13) of the welder by raising the side cover release lever (14),
lift and open the side cover (13) to reveal the drive roller assembly.
8
ASSEMBLY
Drive washer(d)
Wire Drive
Shaft (a)
Fig. 1
(c)
(a)
(b)
(d)(e) (f)

9
ASSEMBLY (cont.)
Drive Roller Assembly Descriptions (Fig.2)
Setting the Wire Drive Roller Size
Release the pressure of the pressure roller (m) by loosening the pressure screw (g)
anti-clockwise (Fig.3).
Pull the pressure screw arm (n) away from the welder assembly to release the
pressure arm (h) (Fig.4).
Raise the pressure arm (h) to release the pressure on the pressure roller (m) and allow
access when changing the wire drive rollers (k) or feeding the welding wire to the
MIG torch (4) (Fig.5).
Remove the wire drive roller bracket (j) by rotating anti-
clockwise (Fig.6) and then pulling the bracket off of the
assembly (Fig.7).
Lift the wire drive roller (k) off the shaft and inspect it to
confirm the wire groove size is stamped on either face of
the roller (Fig.8). Always ensure the wire drive roller size
you require is facing outward when assembled on the
MIG welder.
Note: Always ensure that the welding wire size you are
using matches the wire drive roller (k) size. If you use the
incorrect drive roller size then you will experience issues
such as the wire not feeding correctly or irregular welding.
Re-fit the welding wire drive roller (k) and wire drive
roller bracket (j) by rotating the wire drive roller
bracket (j) clockwise.
Fig. 2
j
Wire Drive Roller Bracket
g
Adjustable
Pressure Screw
n
Pressure Screw Arm
m
Pressure Roller
l
Inlet Guide
k
Wire Drive Roller
h
Pressure Arm
i
Conduit Liner
Fig. 3 Fig. 4 Fig. 5
Fig. 6
Fig. 7

10
ASSEMBLY (cont.)
Caution: Do not over tighten the wire drive roller bracket
(j) as this could result in damage to the welder.
Adjusting Drive Roller Pressure
The pressure roller (m) applies pressure to the wire drive roller (k) via the adjustable
pressure screw (g) and pressure arm (h).
It is recommended that you adjust the pressure screw (g) to apply sufficient
pressure to the drive roller (k), this will provide satisfactory wire feed without
allowing the wire to slip in the wire groove of the drive roller (k).
If the welding wire appears to be slipping and not feeding correctly inspect the
wire torch tip (2) to ensure that there is no wear, distortion or welding slag
stopping the welding wire from feeding through the tip.
Inspect the conduit liner (i) (this is the flexible inner tube
that carries the welding wire between the welder and the
welding torch) for bends, kinks and clogging by metal
filings or welding wire left in the conduit liner (i). If it is not
the cause of the slipping, the drive roller pressure arm (h)
can be increased by rotating the pressure screw (g)
clockwise (Fig.9).
Caution: Over tightening the pressure screw (a) can apply excessive pressure to
the drive roller (d), this can cause excessive wear to the drive roller (d), pressure
rollers (f), shafts and bearing.
Welding Wire Maintenance
Caution: It is critical to make sure that your welding wire is free from kinks, bends
and sharp points at the end of the wire. Kinks and bends in the welding wire will
cause the wire to jam or drag in the welding torch lead conduit liner (Fig.2) (i). The
inner tube (Fig.2) (i) allows the MIG wire to pass between the MIG welder and the
welding torch (4) without creating drag. Kinks and bends can also cause the
welding wire to become jammed in the welding tip (2).
Cutting Welding Wire (Fig. 10)
When cutting the welding wire, avoid
cutting the wire on an angle (eg. leaving
a sharp point on the end), it is
recommended that you lightly file a flat
end of the welding wire prior to feeding
the wire into the welding torch conduit
liner (Fig.2) (i).
Fig. 8
Fig. 9
ALWAYS DISCARD ANY
KINKED OR DAMAGED
WELDING WIRE
NEVER LEAVE A SHARP
POINT ON THE END OF THE
WELDING WIRE
Welding
wire with a
sharp point
Welding wire
with a flat or
round end
Fig. 10

!
!
ASSEMBLY (cont.)
WARNING! Make sure the earth clamp is not touching you and out of
your way.
The electrode wire will be at welding voltage whilst it is being fed
through the system.
Keep the MIG Torch away from your eyes and face.
Feeding the Welding Wire (Fig.11)
1. Remove the shroud (3) and then unscrew the torch tip (2) by turning the tip anti-
clockwise. This will allow the welding wire to pass through the MIG torch (4)
without catching on the back of the torch tip (2).
2. Release the tension of the pressure arm (h) by turning the pressure screw knob (g)
anti clockwise, this will reduce the tension of the pressure arm (h).
3. Pull the pressure screw arm (n) away from the welder assembly to release the
pressure arm (h). This will allow the pressure roller to lift upwards from the drive
roller, allowing access to feed your welding wire into the conduit liner (i).
4. Lift up the pressure arm (h) and pass the electrode wire through the inlet guide (l),
between the wire drive rollers (k) and into the conduit liner (i).
5. Lower the pressure arm (h) and adjust the pressure accordingly using the
adjustable pressure screw (g).
Feeding the Welding Wire through to the
MIG Torch (Fig. 12)
Ensure the MIG torch lead is straight, and the
welder On/Off switch (5) is turned on. Feed the
wire through to the MIG torch (4) by depressing
the torch trigger switch. Fit the appropriate
welding wire torch tip (2) (Fig.12).
Fig. 11
Adjustable
Pressure Screw (g)
Inlet Guide (l)
Pressure Arm (h)
Conduit Liner (i)
ALWAYS EXTEND THE WELDING TORCH
FULLY AND REMOVE THE TORCH TIP
WHEN FEEDING THE WELDING WIRE
Fig. 12
11

OPERATION
12
Adjusting the Wire Speed and Welding Current (Fig.13)
The wire speed can be controlled by the wire speed
adjustment knob (9). The wire speed adjustment knob (9)
controls the welding current via the welding wire, this
determines the speed of the wire feed motor and the rate of
the welding wire to your welding job.
Min/Max Voltage Control Switch (Fig.14)
The Min/Max Control Switch (8) sets the voltage level to the
welding terminals as it is switched between the Min and Max
position. The Min position has a welding current of 65 Amp
and the Max position has a welding current of 90 Amp.
Caution: The Min/Max Control Switch (8) MUST NOT BE
SWITCHED during the welding process. Some internal
electrical components are at Mains voltage when switching
between settings, this can lead to damage to the internal
components of the welder.
Switching the welder On and Off (Fig.15)
The On/Off Switch (5) is located on the front of the welder.
To turn the welder on, select the ON position.
To turn the welder off, select the OFF position.
Overload Protection LED Light (Fig.16)
The power source is protected by a self resetting
thermal cutout. The overload protection LED (6) will
illuminate and welding current will cease, if the duty
cycle of the power source has been exceeded. If the
overload protection LED light (6) illuminates, wait for the
LED indicator to extinguish before resuming welding.
Fig. 13
Fig. 14
Fig. 15
Fig. 16

OPERATION (cont.)
13
Overload reset button and fuse
Inside the side cover (13) you will find a fuse (Fig. 17) and fuse
holder. In the event that the welder is overloaded or has
received a power surge the welder may turn itself off for
internal components protection. In this event the welder may
require you to replace the fuse.
Remove the fuse holder by rotating anti-clockwise with the slotted screwdriver.
remove and inspect the fuse. If the fuse shows signs that it has blown it must be
replaced with the same Volt and Amp rated fuse as indicated on the fuse.
Replace the fuse and fuse holder and rotate clockwise to secure. Press the reset
button and the welder should begin to weld.
Choosing the right size and type of Welding Wire
There are many variables that you will need to take into account when choosing your
welding wire size and type.
Below are some of the things you need to take into account when choosing the
welding wire.
1. Thickness of the material to be welded.
2. Position and type of welding joint.
3. Maximum welding capacity of your welder.
4. How much penetration will be required for strength.
5. Type of the bead desired for the weld.
6. Type of material to be welded.
Fig. 17

MAINTENANCE
14
WARNING! There are extremely dangerous voltage and power levels
present inside this product. Do not attempt to open or repair unless you
are a qualified electrical tradesperson.
Disconnect the Welding Power Source from the Mains Supply Voltage before
disassembling. Welding equipment should be regularly checked by a qualified
electrical tradesperson to ensure that:
• The main earth wire of the electrical installation is intact.
• The power point for the Welding Power Source is effectively earthed and of
adequate current rating.
• Plugs and cord extension sockets are correctly wired.
•Flexible cord is of the 3-core tough rubber or plastic sheathed type of
adequate rating, correctly connected and in good condition.
• Welding terminals are shrouded to prevent inadvertent contact or short circuit.
• The frame of the Welding Power Source is effectively earthed.
•The Welding Power Source is clean internally, especially from metal filing, slag,
and loose material. If any parts are damaged for any reason, replacement is
recommended.
Cleaning the Welding PowerSource
WARNING! To clean the Welding Power Source, open the enclosure
and use a vacuum cleaner to remove any accumulated dirt, metal filings,
slag and loose material. Keep the shunt and lead screw surfaces clean as
accumulated foreign material may reduce the welders output
welding current.
Cleaning the Drive Rolls
Clean the grooves in the drive rolls frequently. This can be done by using a small
wire brush. Also wipe off or clean the grooves on the upper drive roll. After
cleaning, tighten the drive roll retaining screws.
Caution: Do not use compressed air to clean the Welding Power Source.
Compressed air can force metal particles to lodge between live electrical parts and
earthed metal parts within the Welding Power Source. This may result in arcing
between the parts and their eventual failure.
Note: Ozito Industries will not be responsible for any damage or injuries caused by
the repair of the tool by an unauthorised person or by mishandling of the tool.
!
!
!
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15
TROUBLESHOOTING
FAULT CAUSE REMEDY
Mains supply voltage
is ON but when the
torch trigger switch is
depressed, nothing
happens.
Wire feeds when the
torch trigger switch is
depressed but arc
cannot be established.
Welding dirty, oily,
painted, oxidised or
greasy plate.
Jerky wire feed.
Wire does not feed
when torch trigger is
depressed.
1
2
3
4
5
A. Torch trigger switch
leads are disconnected
or broken.
B. Fuse on Printed Circuit
Board is blown.
C. Printed Circuit Board
Faulty.
Poor or no earth lead
contact.
A. Have an authorised
electrician or power tool
repairer replace the
faulty parts.
B. Have an authorised
electrician or power
tool repairer replace the
faulty parts.
C. Have an authorised
electrician or power
tool repairer replace the
faulty parts.
Clean earth clamp area and
ensure good electrical
contact.
Clean contaminates off the work piece.
A. Worn or dirty contact tip.
B. Worn drive roller.
C Excessive back tension
from welding wire
reel hub.
D Worn, kinked or dirty
conduit liner.
A. Faulty trigger switch /
lead.
B. Fuse is blown.
C. Printed Circuit Board
Faulty.
A. Replace the contact tip.
B. Replace the drive roller.
C Reduce brake tension on
welding wire spool hub.
DClean or replace
conduit liner.
A. Repair or replace Torch /
trigger lead.
B. Check the fuse or have
an authorised electrician
or power tool repairer
replace the faulty parts.
C. Have an authorised
electrician or power tool
repairer replace the
faulty parts.

TROUBLESHOOTING (cont.)
16
Wire continues to
feed when torch
trigger is released.
OVERHEAT LED
Indicator is illuminated.
Weld Burning through
the workpiece.
Lack of penetration.
Lack of fusion.
Excessive spatter.
6
7
8
9
10
11
A. Torch trigger leads
shorted.
B. Printed Circuit
Board Faulty.
Power Source Over Heat
Protection circuit has
operated.
A. Welding arc voltage
too high.
B. Incorrect torch angle.
C Excessive heat input.
A. Welding current too low.
B. Joint preparation too
narrow or gap too tight.
Arc voltage too low.
A. Arc voltage too high.
B. Arc voltage too low.
A. Repair or replace Torch /
trigger lead.
B. Have an authorised
electrician or power tool
repairer replace the
faulty parts.
Cease welding and allow
Power Source to Cool for 10
minutes. Over Heat indicator
will extinguish when the Power
Source has cooled sufficiently.
A. Reduce voltage by
switching the Min/Max
Control Switch to the
Min position.
B. Adjust angle.
CIncrease the torch travel
speed or reduce welding
current by switching the
Min/Max Control Switch
to the Min position.
A. Increase welding current
by switching the Min/Max
Control Switch to the Max
position.
B. Increase joint angle or gap.
Increase Arc voltage by
increasing the Output Voltage
Control Switch positions.
A. Lower the voltage by
switching the Min/Max
Control Switch positions
to Min position.
B. Raise the voltage by
switching the Min/Max
Control Switch positions
to Max position.
FAULT CAUSE REMEDY

17
TROUBLESHOOTING (cont.)
Irregular weld shape.
Weld cracking.
Cold weld puddle.
A. Incorrect voltage and
current settings.
Convex, Arc voltage
too low, Concave
voltage too high.
B. Wire is wandering.
C. Insufficient or
excessive heat input.
A. Weld beads too small.
B. Weld penetration
narrow and deep.
C. Excessive weld
stresses.
D. Excessive voltage.
E. Cooling rate too fast.
A. Faulty rectifier unit.
B. Loss of a phase in the
Mains supply voltage.
C. Low Mains supply
voltage.
A. Adjust voltage and
current by adjusting the
Min/Max Control Switch
positions and the Wire
speed adjustment knob.
B. Replace torch tip.
C. Adjust the wire speed
adjustment knob or the
Min/Max Control Switch
to Max.
A. Decrease torch travel
speed.
B. Reduce current and
voltage and increase
the MIG Torch travel
speed.
C. Increase weld metal
strength or revise design.
D. Decrease voltage by
reducing the Hi/Low
Control Switch.
E. Slow the cooling rate
by preheating part to
be welded or cool slowly.
A. Have an authorised
electrician or power tool
repairer replace the
faulty parts.
B. Check mains power.
C. Contact supply
authority.
12
13
14
FAULT CAUSE REMEDY

18
SPARE PARTS
Please contact your local Bunnings Special Orders Desk to order the required
spare parts.
Most common spare parts listed below
Spare Part Part No.
Mig Torch Assembly SPMWR090-03
On/Off Switch Assembly SPMWR090-05
Hi/Low Switch Assembly SPMWR090-06

19
CIRCUIT DIAGRAM

20
DESCRIPTION OF SYMBOLS
VVolts Hz Hertz
~Alternating current WWatts
U
0 Non-load voltage U 2 On-load voltage
m/min Revolutions or
reciprocation per minute
U1 Rated AV input voltage
(with tolerance ±10%)
A/V Electric current adjustment
range, and the relevant
on-load voltage
X load duration rate
IP Protection class
Used in the environment which
has high risk of electric shock
MAG welding
Warning
Symbol of single-phase AV
power and rated frequency
I
1max Rated maximum input current I 1eff Maximum effective input current
Vmax
Max. wire feeding speed
Double insulated Regulator compliance mark
A Amperes
Single-phase transformer
- Rectifier
1
S
1 ~ 50Hz
Do not operate in the rain
Read operator’s manual