Checking the heating element, the connector and the connections inside the soldering iron
In order to check whether the heating element or the sensor is possibly defective, a resistance meas-
urement should be carried out in the event of problems (see figure below). The measurement must be
carried out at normal room temperature and result in a value between 7.5 Ω and 12 Ω.
Measuring point
To check the soldering iron connector for damage, a resistance measurement should be carried out
between the third pole of the connector and the tip of the soldering iron. The value must not exceed
2 Ω. If this is the case after cleaning the soldering tip, the connector is defective and must be replaced.
General remarks and maintenance
Care instructions for soldering tips
1. Soldering tip temperature
– High temperatures shorten the life of the soldering tip and in-
crease the heat load on the components during soldering. If possible, always use the lowest
processing temperature recommended for your solder.
2. Cleaning
– Always clean the soldering tip before use to remove excess solder and flux
residues. Use a clean, wet cleaning sponge for this. Residues on the soldering tip can negat-
ively affect the soldering process and lead to poor soldering results. Our soldering iron tip
cleaner 91806 makes this work easier for you.
3. After use
– Always clean the soldering tip and re-tin it before switching off. This protects the
soldering tip from oxidation and increases the service life of your soldering tip.
4. Never leave the station switched on at high temperatures for long periods of time. Otherwise
the oxidation of the soldering tip will be stimulated. Switch off the device at the main switch if it
is not used for several hours. If it is not going to be used for a long time, it is advisable to pull
out the power plug as well.
Cleaning the soldering tip
Carry out this cleaning as often as possible (possibly daily) to increase the service life of the soldering
tip.
Set the temperature to around 250
.
℃
When the temperature has stabilized, clean the tip and check its condition. If it is badly worn
or deformed, replace it.
If the pre-tinned part of the soldering tip is covered with black oxide, apply new solder
containing flux to the tip and clean it again. Repeat this process until all black oxidized areas
are removed and then apply a new layer of tin.
Switch off the station, let the soldering iron cool down and remove the soldering tip. Let the
soldering tip cool down a bit.
Remaining residues, e. g. yellow discoloration, can now be removed with isopropanol alcohol.
CAUTION:
Never
use a file to remove any residue!
© by WilTec Wildanger Technik GmbH
Item
Page 19
http://www.WilTec.de
http://www.aoyue.eu
03 2021
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