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Posted by Steamer on December 06, 2003 at 05:35:46:
In Reply to: Water problems posted by Gary on November 24, 2003 at 06:38:14:
Perhaps the boiler pressure also goes down too?
It could be a very high peak that creates high instability inside the boilers with the creation of big steam bubbles that artificially rises the water level leading to level control false readings.
If is this the case you should think in install a start-up valve in the boiler with back pressure control to maintain steady conditions in the boiler during start-up - Is better to have some steam always, then cut it by boiler lock-out.
Has the system performed ok in the past and have changed recently?
In that case you need to check all the components of the level control. But if in normal work you do not have problems I believe that the first case applies.
Either way you should ask a steam specialist to seek in more detail the possible causes.
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