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10
Thermal cut-out
• When the thermal cut-out protection is operating, the Over-Heat Indicator (5) will illuminate and
the welder will shut down
• Allow the machine to cool. The cut-out will automatically reset once the machine is ready to be
used
Preparing to weld
• Ensure that parts to be joined are clean and free from rust, paint, or other finishes
• All parts should be well supported, so that there is a gap of approximately 1mm where you
intend to form the welded joint
• Check that there are no flammable materials in the vicinity of the work area
• Attach the Earth Clamp (9) to a cleaned area of one of the parts, as near as practical to where the
joint will be
• Ensure that there is both a responsible person and an operable fire extinguisher at hand
• Connect the machine to the mains power supply
Welding
WARNING:
Using a welder correctly is a technical skill. A welder used incorrectly can be highly
dangerous. The information presented below is general guidance only. If you are not entirely
confident in your ability to use this tool safely, DO NOT USE.
IMPORTANT:
Whatever type of weld you intend to make prepare carefully beforehand to make the
welding as safe, easy and accurate as possible.
1. Move the Voltage/Current Selector (7) to the required setting
2. Hold the Torch Handle (13) in one hand and the Welding Mask (36) in the other
3. Position the torch so that the Tip (10) is approximately 10mm away from the metal, at an angle of
approximately 75˚
4. Hold the mask over your face and squeeze the Trigger (12)
5. An arc should strike between the metal and the Tip. Hold the Trigger for 1-2 seconds and release
6. Allow the weld to cool slightly and move the mask away from your face. If the settings are correct,
a round 'spot' weld should form
7. If the weld has not fully penetrated the metal, increase the voltage/current setting. If a hole has
been made in the metal, reduce the voltage/current setting
• Practise making 'spot' welds until you are confident using the machine, and selecting settings
• An alternative to spot welding suitable for a MIG welder is a plug weld where the top surface
has holes drilled along a surface and a pool of the weld material fills each hole. Spot welds are
possible for thinner material with a MIG welder but the welds are more difficult and may not be
as satisfactory
• To form a 'seam' weld, hold the Trigger for longer, and slowly move the torch forward at the same
time
• If the machine settings are correct, the arc should be steady, and produce a crackling sound
• If you hear a popping sound, or struggle to maintain the arc, adjust the wire speed. If you feel the
torch trying to 'push back', reduce the wire speed
• Creating neat, high quality welds is a skill that takes time to master. Practise and good
preparation should result in satisfactory welds
Accessories
• A wide range of accessories including welding helmets, welder’s gloves, welders apron for
personal protection and welding tools including welding magnets, welding clamps and
chipping hammer are available from your Silverline stockist. Spare parts can be obtained from
toolsparesonline.com
Maintenance
WARNING
: Always unplug the welding machine from the mains supply and allow to cool fully
before attempting to fit or replace any part.
Replacing tips
• As the welder is used, the Tip (10) may become worn. This will make the arc difficult to control
1. To replace the Tip, remove the Shroud (11) from the torch, and unscrew the Tip
2. Check that the new Tip is the correct size for the wire being used
3. Thread the new Tip over the end of the wire, and screw into the torch. Replace the Shroud
Cleaning
Disconnect the machine from the mains supply before cleaning
• Keep your machine clean. Always clean dust or particles away and never allow ventilation holes
to become blocked
• Use a soft brush or dry cloth to clean the machine. If available, blow through the ventilation holes
with clean, dry, compressed air
Storage
• Store this tool carefully in a secure, dry place out of the reach of children. If the tool has a
permanent mains connection prevent access by children to the workshop or garage.
Disposal
Always adhere to national regulations when disposing of power tools that are no longer functional
and are not viable for repair.
• Do not dispose of power tools, or other waste electrical and electronic equipment (WEEE), with
household waste
• Contact your local waste disposal authority for information on the correct way to dispose of
power tools
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Summary of Contents for 30-135A
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