Silverline 844392 Manual De Instrucciones página 6

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Connecting to a Power Supply
• ONLY connect this welder to a power supply capable of providing the specified
voltage
• If connecting to a generator, check the specification of the generator first
WARNING:
• Welders operate at very high current levels at maximum settings: Do not
overload your mains supply
• It may be necessary not to use other high current devices at the same time as a
welder (for example, cooker, microwave, electric fire etc.)
• If it is not convenient to disconnect other devices on your mains circuit, keep the
welder at lower current settings
• At high current settings, it is possible that the welder may short-circuit your
fusebox/consumer unit to disable the circuit the welder is connected to. This
does not indicate a fault with the welder
• If in any doubt, consult an electrician about connecting your welder
Before Use
• Always wear appropriate personal protective equipment for the job that you
are to do. Use of this machine requires a welding mask, gloves, heat resistant
clothing and, if appropriate, a respirator
• Always ensure that you have an appropriate fire extinguisher near to the work
area
• Always inspect your machine for damage or wear. Pay particular attention to
leads and cables. If any damage is found DO NOT USE
• Check that all casings or covers are completely closed and secured
• 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 sufficient
ventilation
Operating Instructions
WARNING: Always unplug the welding machine from the mains supply and allow
to cool completely before attempting to fit or replace any part
Setting the machine
• The Current Control Knob (2) switches the welder on and off and controls the
welding current
• To achieve a good quality weld the current control knob must be set correctly
(see Duty Cycle for guidance)
• Turning the control knob clockwise will increase the welding current, turning the
knob anti-clockwise will reduce the welding current
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 rod manufacturers guidelines to select the correct rod for your
requirements
Duty cycle / thermal cut out
• This machine is designed to weld constantly at 35A or below. For welding at
greater currents, refer to the duty cycle
• The duty cycle (see specifications) defines the number of minutes, in a period of
minutes, that the machine can weld
• If the machine is overloaded, or used beyond its duty cycle, it will automatically
cut out and the Overheating Indicator Light (7) will illuminate
• Allow the machine to cool. The cut-out will automatically reset and the
overheating indicator light extinguish once the machine is ready for use
• Using the machine at reduced current settings and maintaining good ventilation
will maximise the duty cycle
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, with 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 (5) to a cleaned area of one of the parts, as near as
practical to where the joint will be
• Squeeze the Electrode Clamp (4), to open the jaws. Place an electrode into
the jaws, and release. The electrode should be firmly gripped, with the clamp
contacting the clean metal part (not the coated part)
• Ensure that there is a responsible person, and an operable fire extinguisher
at hand
• Connect the machine to the mains power supply
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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.
• Turn the Current Control Knob (2) clockwise from the OFF position to the
required current or thickness of electrode you are using, as indicated on the
scale. The green Power Indicator Light (8) will illuminate
• Hold the Electrode Clamp (4) in one hand, and the face mask in the other
• Position the rod at an angle of approx 80˚ to the surface, with the tip is approx
30mm away from the metal
• Hold the mask over your face, and tap the rod against the metal
• An arc should strike between the metal, and the tip. Try to hold the tip of
the rod a distance away from the metal equal to the rod thickness. Maintain the
arc for 1-2 seconds, then move the rod away
• 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
• 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
• Practice making "spot" welds until you are confident using the machine, and
selecting settings
• To form a "seam" weld, maintain the arc for longer, and slowly move the rod
forward at the same time. 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 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, switch off the welder by turning the current
control knob anticlockwise to position 0 on the scale. The green Power Indicator
Light (8) will be extinguished
• Remove excess and splatters using the chipping hammer and 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
Troubleshooting
Should you experience any problem with the welder please make the following
checks:-
• That the welding current is correct for the diameter and type of electrode in use
• That the power supply is on, and the power indicator light is on. If the power
indicator light is not on there is a power supply problem (for example a circuit
breaker may have blown)
• That the correct voltage is being used as indicated on the rating plate
• That you have not exceeded the duty cycle and the thermal cut-out is in
operation
• That the cables are undamaged and that there is nothing causing a short circuit
• That all circuit connections are correct. You should pay particular attention
to the work clamp, making sure that it is correctly attached to the workpiece
and that there is no grease, paint or other contaminate that could cause a bad
connection
Maintenance
WARNING: Always remove the plug from the mains power supply before carrying
out any maintenance/cleaning.
Cleaning
• Keep your machine clean at all times. Dirt and dust will cause internal parts
to wear quickly, shortening 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
Disposal
• Do not dispose of power tools, or other waste electrical and electronic
equipment, with household waste
• Contact your local waste disposal authority for information on the correct way
to dispose of power tools