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Old 7th July 2021, 16:29   #56
Phil-T4
I really should get out more.......
 
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This may help....

Message text posted by me on the 28th January 2017
Quote:
That is what i thought too until i asked X-Part about it and here is the reply....

"Hi,
PEM101050 holds thermostat PEL100370
According to the actual engineering drawing it has a range of S.T.O. ( start to open ) figures.
It was set at S.T.O. 88c until 1995 then it changed.
It now has upper and lower tolerances.
Set between S.T.O 80c and 84c so it is stamped middle tolerance of 82c

Fully open at 96c"

If the drawings were passed over to the Chinese then replacements may well have been made to the newer specs.
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