Many thanks - unused for a long time but still under pressure. Plug in connect the pipes and release the pressure and hey presto it opens! The internet is a wonderful thing eh?
M
July 2013
Tank is still pressurised, plug in and turn the bottom 'steam' switch on. This will release the pressure and allow the plug to be unscrewed.
Alan
May 2010
You have probably 'threaded' it. If you try to screw something on and it is difficult, but you keep trying, the metal is strong enough to change the thread, then next time you try to use it, the thread is chanelled wrongly, so it doesn't screw in properly.
Sue
August 2009
Automatic Answer
While you wait for answers, we may have found some information which could help you.
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Try fixfault.com to fix steam cleaners.