7
Care & Maintenance
The WF-135S does not require any special
maintenance, however the user should take care
of the machine as follows:
• Regularly clean the ventilation slots.
• Keep the casing clean.
• Check all cables before use.
• Check electrode holders, work lead/clamps and
welding torches before use.
• Replace worn electrode holders and earth
clamps, which do not provide a good connection.
• Replace worn torch consumable parts in a timely
manner.
• Use a soft cloth or brush to clean electrical
components.
• Do not use liquid cleaning products, water or
especially solvents.
• Do not use compressed air to clean electrical
components as this can force dirt and dust
further into components, causing electrical short
circuits.
• Check for damaged parts. Do not use the welder
with damaged parts.
Keep your Welding Machine in Top
Condition
If damaged, before further use, the welder must be
carefully checked by a qualified person to
determine that it will operate properly. Check for
breakage of parts, mountings and other conditions
that may affect its operation.
Have your welder repaired by an expert. An
authorised service centre should properly repair a
damaged part.
This appliance is manufactured in accordance with
relevant safety standards. Only experts must carry
out repairing of electrical appliances, otherwise
considerable danger for the user may result.
Use only genuine replacement parts. Do not use
modified or non-genuine parts.
WARNING!
Before performing cleaning/maintenance,
replacing cables / connections , make sure the
welding machine is switched off and
disconnected from the power supply.
When not in use the welder should be stored in the
dry and frost-free environment.
Storing the Welder
MMA (Stick) Basic
Welding Guide
Size of Electrodes
The electrode size is determined by the thickness
of metals being joined and can also be governed
by the type of welding machine available. Small
welding machines will only provide current
(amperage) to run smaller sized electrodes.
For thin sections, it is necessary to use smaller
electrodes otherwise the arc may burn holes
through the job. A little practice will soon establish
the most suitable electrode for a given application.
Storage of Electrodes
Always store electrodes in a dry place and in their
original containers.
Electrode Polarity
Electrodes are generally connected to the electrode
holder with the electrode holder connected
positive polarity.
The work lead is connected to the negative polarity
and is connected to the work piece. If in doubt
consult the electrode data sheet.
Effects of MMA(Stick) Welding
on Various Materials
High Tensile and Alloy Steels
The two most prominent effects of welding these
steels are the formation of a hardened zone in the
weld area, and, if suitable precautions are not
taken, the occurrence in this zone of under-bead
cracks. Hardened zone and underbead cracks in
the weld area may be reduced by using the correct
electrodes, preheating, using higher current
settings, using larger electrodes sizes, short runs
for larger electrode deposits or tempering in a
furnace.
Manganese Steels
The effect on manganese steel of slow cooling from
high temperatures causes embrittlement. For this
Summary of Contents for WeldForce WF-135s stick
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