Bräunlich QU376D, Руководство пользователя

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USER MANUAL
24
the temperature to 300
℃
again. Repeat above steps. Finally set the
temperature to work temperature. The purpose of this is to form a
protecting film on tinned layer of soldering tip, so it can prevent the
oxidation at high temperature and failure of heat transport.
3
．
If the tinned part of soldering tip has black oxide, it can be covered
with new tin. Clean it with humid sponge repeatedly until the oxide is
completely removed, and then covered with new tin. Please do this
cleaning regularly.
4
．
Turn off the Power supply when not use. Clean the soldering tip with a
cleaning sponge and then covered with new tin. Repeat above steps when
use it again.
5
．
Replace soldering tip if it is twisted or eroded badly.
1.17. Check and Replace Heating
Element
Disconnect the plug and measure the resistance value between the
connecting plug pins as follows:
If the values of ‘a’ and ‘b’ are outside the below value, replace the
heating element (sensor) and /or cord assembly. If the value of ‘c’ is
over the below value, remove the oxidization film by lightly rubbing
with sand-paper or steel wool the points as shown.