Make sure when using this iron to clean the tube with the poker before and after use. Also when done hold the gun towards the sky and pull the trigger for 30 seconds.

You should also empty the glass chamber of any solder you have sucked in.

To release the glass chamber, push on the back hammer and then using your thumb or a thumbnail push down on the rounded button below it. This should release the hammer and allow you to slide it backwards, giving you enough room to pull out the chamber. The chamber pivots on the plunger, so the end of the chamber facing the tip comes out first.

This picture shows the above, but should you need assistance make sure you contact the cause leader.