Manual Ferm SGM1001 (page 5 of 84) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Spanish, Norwegian, Finnish)

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Ferm

Warning: This tool must be placed on its

stand when not in use.

Below, we give you some examples of poorly

soldered joints:

• If the soldering tin is tear-shaped, the

soldering coagulate was too cold.

• If the soldering tin is dull and slightly porous or

crystalline, the parts were probably moved

during the cooling process.

• If too little soldering tin has been left in the

joint, the soldering was too warm or the

soldering tin was not melted sufficiently.

• If the soldering tin is yellow or black, this

means that too much soldering paste has

been used or that the inner core of the tin

solder wire has become overheated during

soldering. You must avoid this above all in

electronic circuits since most acid pastes are

corrosive and reduce the service life of

electronic wiring.

Replacement of the soldering tip

Pull out the mains plug!

• tip and housing of the soldering gun are

connected by means of a contact piece so that

the soldering gun can be comfortably repaired

and changed. Wear and tear of the tip after

longer periods of use make replacement

necessary at regular intervals.

• To replace the soldering tip:

• Unscrew the 2 fixing screws, which hold the

tip and the housing together, and remove

the old tip.

• Put in the new tip 1 and tighten up the two

screws 2 again. The appliance is now ready

for work again.

4. Working indications

For good soldering

• The soldering joint must be reguline. Remove

oxidation, grease and so forth by means of

mechanical (abrasive paper, brushes, file) or

chemical cleaners (alcohol, fluxing agent).

• Thesolderingtip

• Give a good plating of soldering tin.

• Never work on it with a file.

• Pretinplating of the parts which are to be

tinplated makes the soldering easier and

ensures a perfect electrical contact.

• Ensure that the wires are mechanically

connected before soldering (twist together,

hook into place, attach round eyelets).

• First heat up the soldering joint and then melt

the solder over the soldering joint and allow it

to flow in.

• Melt as little solder as possible.

• Keep the heat load (soldering time) as short

as possible.

• A perfect soldering joint is shiny and smooth.

The edge shows a clean, bonding join to the

metal.

Soldering tin solder

Soldering tin is essentially an alloy of tin and lead.

The designation of 60/40 means a combination of

60% tin with 40% lead. For electrically soldered

joints, use only non-acid solder and fluxing agent.

For information on special solder for specific work,

consult the manufacturer.

Flux

The melting of the solder is improved with the use

of flux while, at the same time, impurities such as

grease or metal oxide are removed and evaporate

during soldering.

• Organic fluxing agents like colophonium and

resins for acid-free soldering.

• Inorganic fluxing agents, which are highly

effective these are effective but corrosive.

Use only for larger joints and clean the soldering

joint thoroughly afterwards.

Printed circuits

The strip conductors and the miniature component

parts are very temperature-sensitive and can

therefore be easily damaged. Pay attention to the

following:

• Prepare the soldering work well.

• Pre-assemble the component parts.

• Secure the printed circuit board or soldering

joint against shifts.

• Use only first class solder with anticorrosive

flux.

• Do not apply any surplus solder.

• Keep the soldering time (heat load) as short

as possible.

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Ferm SGM1001 Manual

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