Silverline 868773 Manual Del Usuario página 7

868773
Connecting to mains
Note: This tool is earthed and must only be connected to mains with a earth
connection. Do not attempt to use it without an earth connection.
• This welder is not supplied with a mains electrical plug because at full capacity
it will draw far too much power for a normal domestic 230V mains plug and
socket. This welder must not be fitted with a standard 13A UK plug or 16A
European plug.
• A high current 230V or 400V mains socket or terminal must be installed by
a qualified and accredited professional electrician. A 32A socket and plug
conforming to IEC 60309 is recommended
• A non-socketed mains connection also requires welder connection by
a qualified and accredited professional electrician. However, a socketed
connection is safer and more strongly recommended so the welder can be
safely isolated when necessary. If directly wired to mains, a double pole, double
throw isolator switch must be fitted
• The welder must be connected to a consumer unit with a built-in RCD, using a
circuit protected by an RCD
• Please refer to the Specification for details of the maximum current required
by this welder
• If in any doubt, do not attempt to connect or use this welder until a professional
electrician has been consulted
Operation
WARNING: ALWAYS wear a welding mask, gloves and heat-resistant clothing
when working with this tool.
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 Voltage Switch (2) to the 230V
position for a 230V mains supply
• Switch the welding machine on by moving the Voltage Switch to the 400V
position for a 400V mains supply
• Switch the welding machine off by moving the Voltage Switch into the 'O' off
position
Welding rod selection
• In order to produce a good quality weld, the correct type of welding rod must be
used. Welding rods are available in a variety of thicknesses and materials, and
with a range of coatings
• Refer to the rod manufacturer's guidelines to select the correct rod for your
requirements
Current selection
• In order to achieve a good quality weld, the Current Knob (8) must be set
correctly
• Turning the Current Knob clockwise will increase the welding current; turning
the knob anti-clockwise will reduce the welding current
• The selected current is displayed on the Current Scale (1)
Duty Cycle
• This machine is not designed to weld constantly. 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 ten
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
• As the duty cycle limit is reached, the Over-Heat Indicator (4) 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 (6) 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 lever (2), to open the Electrode Clamp (5). Place an electrode into the
jaws, and release lever. The electrode should be firmly gripped, with the clamp
contacting the clean metal part of the rod (not the coated part)
• Ensure that there is a qualified bystander with an operable fire extinguisher
at hand
• 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. Switch on the welder
2. Hold the Electrode Clamp (5) in one hand, and the Welding Mask (10) 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 (10) 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 (5) 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 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
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