www.silverlinetools.com
7
200A MMA Inverter Arc Welder Kit
103597
Operation
WARNING:
ALWAYS wear a welding mask, gloves and heat-resistant
clothing when working with this tool.
WARNING
: Toxic fumes can be given off by welding and suitable
respiratory protection may be required. Read welding safety and contact
your national health and safety government body for additional information.
In the UK information is available from www.hse.gov.uk/welding
WARNING:
Always inspect your machine for damage or wear. Pay particular
attention to leads and cables. If any damage is found, DO NOT USE.
Note:
Before use, check that all casings or covers are properly closed and
secured.
Note:
Position the welder to ensure that it will not move, or tip, in use.
Ensure that there is at least 500mm of clear space around the welder, to
allow proper ventilation.
Switching on and off
• Switch the welding machine on by moving the On/Off Switch (2) (located
at rear of welder) into the ‘I’ position
• Switch the welding machine off by moving the On/Off Switch into the
‘O’ position
Current selection
• In order to achieve a good quality weld, the Current Dial (3) must be set
correctly
• Turning the Current Dial clockwise will increase the welding current;
turning the knob anti-clockwise will reduce the welding current
Duty Cycle
• This machine is not designed to weld constantly at higher current
settings. Excessive continuous welding will cause overheating and
damage to internal components
• This machine is equipped with a thermal cut-out. If the machine is
overloaded, or used beyond its duty cycle, it will automatically shut down
• The duty cycle (see Specification) defines the number of minutes in every
10 minutes that the machine can weld
• For a duty cycle of 30%, the machine may be used for 3 minutes then
must be allowed 7 minutes to cool
• If the duty cycle is exceeded, the machine will automatically cut out
• Using the machine at reduced current settings and maintaining good
ventilation will maximise the duty cycle
• When the duty cycle limit is reached, the Over-Heat Indicator (6) will
illuminate. The light will cut out when the machine has cooled and is
ready to be used again
• As a precaution, it is recommended the machine is allowed to cool for a
further three minutes after the Over-Heat Indicator has switched off, to
ensure the cool-down temperature has been met
Weld preparation
• Ensure the joining surfaces of the workpiece are clean, free from rust,
paint, or other finishes
• All parts should be well supported, with a gap of approximately 1mm
where the weld is intended to be formed
• Check that there are no flammable materials in the vicinity of the work
area
• Attach the Earth Clamp (8) to a cleaned area of one of the parts, as near
as practical to where the joint will be
Note:
Improve connectivity between the Earth Clamp and the workpiece by
wrapping a piece of scrap copper wire, with the insulation removed, around
the teeth of the clamp.
• Squeeze to open the Electrode Clamp (10). Place an electrode into the
jaws, and release. The electrode should be firmly gripped, with the clamp
contacting the clean metal part of the rod (not the coated part)
• Connect the machine to the mains power supply
Welding
WARNING:
Using a welder correctly is a technical skill. An incorrectly-used
welder can be highly dangerous. The information below is general guidance
only. If you are not entirely confident in your ability to use this tool safely
DO NOT USE.
1. Move the On/Off Switch (2) into the ‘I’ position (located at rear of welder)
2. Hold the Electrode Clamp (10) in one hand, and the Welding Mask (13)
in the other
3. Position the rod at an angle of approximately 80˚ to the surface, with the
tip approximately 30mm away from the metal
4. Hold the Welding Mask over your face and tap the rod against the metal
5. An arc should strike between the metal and the tip. Try to maintain a
distance between the welding rod and the workpiece equivalent to the
diameter of the rod. Maintain the arc for one-to-two seconds, then move
the rod away
6. Allow the weld to cool slightly and move the mask away from your face.
If the settings were correct, a round ‘spot’ weld should have formed
7. If the weld has not fully penetrated the metal, increase the current
setting. If a hole has been made in the metal, reduce the current setting
8. Practice making ‘spot’ welds until you are confident in using the machine
and selecting settings
9. In order to form a ‘seam’ weld, maintain the arc for longer, and slowly
move the rod along the path of the join. The speed at which the rod is
moved is crucial to achieving a good weld
• If the machine settings are correct, the arc should be steady, and should
produce a crackling sound. Be aware that you will have to gradually
move the electrode clamp closer to the metal as the rod is used up
• Once the weld bead is complete, remove excess and splatters using
a chipping hammer or wire brush. Do not attempt to weld over beads
unless properly cleaned
• Creating neat, high quality welds is a skill that takes time to master.
Practice and good preparation will help to make satisfactory welds
Accessories
• A range of other accessories and consumables, including Welders
Helmet (868520, 934295 and 757060), Welders Chipping Hammer
(515858), Welders Apron (633505) and Welders Gauntlets (282389), is
available from your Silverline stockist. Spare parts can be obtained from
toolsparesonline.com
Maintenance
WARNING:
ALWAYS disconnect from the power supply before carrying
out any inspection, maintenance or cleaning.
General inspection
• Regularly check that all the fixing screws are tight
• Inspect the supply cord of the tool, prior to each use, for damage or wear.
Repairs should be carried out by an authorised Silverline service centre.
This advice also applies to extension cords used with this tool
Cleaning
• Keep your tool clean at all times. Dirt and dust will cause internal parts
to wear quickly, and shorten the machine’s service life. Clean the body of
your machine with a soft brush, or dry cloth. If available, use clean, dry,
compressed air to blow through the ventilation holes
• Clean the tool casing with a soft damp cloth using a mild detergent. Do
not use alcohol, petrol or strong cleaning agents
• Never use caustic agents to clean plastic parts
Storage
• Store this tool carefully in a secure, dry place out of the reach of children
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