DavecUK
Hey Dave, thanks for your prompt reply and I apologise for not responding but i had to deal with a family emergency and been away ….
So, i tried to replicate the issue and it goes like that:
1- once the machine reaches a high temperature water vapour start to come from the back side left corner of the machine.
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2- upon inspection I suspect that on the steam boiler something is leaking a small amount of water that it touches the hot surface and evaporating at a rapid rate.
3- i think the issue starts (as in the pic below) from here. Whereby -trying to catch the beginning of the issue- i see first drops of waster coming from there before it becomes hectic. Secondly once i turn off the machine the sound keeps showing in the same are (a high pitch like when you pump a ball with a manual air pump)
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Hopefully i am in the right direction to find the source of the issue.
Thanks