Thanks all
Many thanks for your invaluable inputs backed up by real practical experience.
You have given me a pretty thorough understanding of the parts,functions and limitations involved.
I will pass on the info to maintenance but personally I wont pull the knob unless I'm on fire.
Any more caveats on the HR200 would be much appreciated.
atceng
typo corrected
Last edited by atceng; 6th Jun 2009 at 17:27.