Sealey SD300K - Manual (Page 2)

3. set UP And oPerAtion
3.1 Using tHe 30WAtt soldering iron.
the 30Watt soldering iron is primarily intended for the soldering of
electrical joints such as the attachment of components to printed circuit
boards and the connection of leads to plugs and sockets used in
electronics. (Where delicate electronic components are concerned that
may be damaged by excessive heat, the wire being soldered should be
held with a pair of thin nosed pliers on the opposite side of the board so
that some of the heat generated by the soldering process is transferred
to the pliers.)
3.2 Preparing the iron stand. Before using the soldering iron, set up the
metal stand provided by bending the centre section upwards so that it is
nearly vertical to the rest of the stand as shown in fig.2. rest the
soldering iron on the stand. Plug the iron into the mains and switch on
leaving the iron on the stand to heat up.
3.3 Preparation of iron. When the iron is up to temperature, “tin” the tip by
melting a thin layer of solder all over the flattened part of it. If any difficulty
is experienced in getting the solder to take to the tip use a proprietary tip
cleaner/tinning product.
3.4 Preparation of parts. the items to be soldered must be perfectly clean and free from
grease. Ideally, the two items to be joined (such as the end of a wire and a switch
terminal) should be individually tinned before being brought together to ensure a good joint.
3.5 Holding the work. ensure that the items to be soldered are readily accessible and firmly
held. the stand provided can be used to hold two items together for soldering leaving
both hands free to manipulate the iron and the solder. (see fig.1)
3.6 soldering. Bring the soldering iron and the solder to the joint simultaneously. (see fig.1)
leave the iron on the joint just long enough to melt the solder so that it flows onto the two
parts to be joined. remove the iron and place it on the stand. leave the joint to cool.
3.7 Changing tips. After a prolonged period of service the tip may become pitted and need
replacing. Wait till the iron is completely cool. loosen the tip retaining nut and pull out the
old tip with a pair of pliers. Insert the new tip and twist it into the orientation you require.
lock the tip in place by tightening the the retaining screw. see fig.3.
3.8 Maintenance. do not allow solder to accumulate where the tip enters the iron as this may
make the tip difficult to remove. do not get solder deposits on the tip retaining screw as it
may prevent a screwdriver fitting into the cross head. Periodically loosen the tip retaining
screw and rotate the tip in the iron to prevent it seizing into the body. use a proprietary tip
cleaner/tinner to keep the tip clean and correctly tinned.
3.9 spare soldering tips : - Model no. sd30/st (straight tip), Model no. sd30/ct (curved tip)
2. sds300k Contents
2.1  Instant heat soldering gun (100Watt)
 soldering iron with stand (30Watt)
 soldering stand
 solder-sucker,
 scraper/probe,
 spare soldering tip
 roll of flux cored solder wire.
fig.1
fig.2
fig.3
3.10 Using tHe 100WAtt soldering gUn.
the 100 Watt soldering gun is primarily intended for electrical and electronic use. Its main advantage is its ability to heat up within 20
seconds of pressing the trigger. the tip temperature will reach 300 oc so care must be taken with delicate electronic components
that may be damaged if excessively heated.
3.11 duty cycle. the gun has a duty cycle of 12 seconds continuous soldering which should be followed by a 48 second rest. If the trigger
is held for less than 12 seconds the necessary rest period needed will be correspondingly less.
 WArning! do not try to lock the trigger by any means as this will overheat the tip and the transformer causing permanent damage
which will invalidate your guarantee.
3.12 Preparing the gun. Prepare the gun by ‘tinning’ the tip with a thin layer of solder. If any difficulty is experienced getting the solder to
take to the tip use a proprietary tip tinner/cleaner.

WArning! disconnect the soldering iron/gun from the mains power and allow it to cool before changing tips.
 do not operate the soldering iron/gun when you are tired, under the influence of alcohol, drugs or intoxicating medication.

do not leave a hot soldering iron or gun unattended.
( If you are leaving the work area even for a short period of time switch it off and allow to cool.)
 do not use the soldering iron or gun for any purpose other than that for which they have been designed.

do not allow untrained persons to operate the soldering iron/gun.
 do not touch the workpiece as it will be very hot. Allow to cool.
 do not operate the soldering iron/gun if damaged.

do not hold the workpiece by hand.
 do not allow children to operate the soldering iron/gun.
Original Language Version sd300K Issue: 2 - 17/02/10