Vibiemme DoubleDomo Super steam boiler pressure

by **blueface** on Fri Jun 10, 2011 12:03 pm

My set pressure for the steam boiler is 1.5 bar but I noticed that once the set pressure is reached (idling), it'll slowly goes down to 1.3 bar before the heating element kicks in again . Is this normal or I'm being paranoid :oops:

. My thinking was that it'll be able to hold the set pressure. Clarification please

http://users.rcn.com/erics/ · by **erics** on Fri Jun 10, 2011 12:40 pm

That is completely normal.

What you should do also is to make an accurate note of how long it takes the pressure to drop from 1.50 bar to 1.30 bar and how long it takes for the boiler pressure to increase. Note a couple of cycles, average them, and write it down in the manual with a date. I would just GUESS and say that the decrease takes about 2.5 minutes and the increase takes 12 seconds.

by **Randy G.** on Fri Jun 10, 2011 12:44 pm

The steam boiler operates on a pressurestat so the swing in pressure is normal. If it were to be held "steady" the switching rate of the pressurestat would be many times greater and it would not last very long. But not to worry. The super-heated water in the steam boiler holds a lot of thermal energy, so even at 1.3 there is plenty of steam in reserve.

by **blueface** on Sun Jun 12, 2011 9:39 am

Thanks Eric & Randy for your reply. Now I can put my mind at ease :mrgreen:

. Thought that there's a leakage somewhere...

by **Paret** on Sun Jun 12, 2011 11:12 am

Did it really take you a whole year to get this?
:?:

by **blueface** on Sun Jun 12, 2011 8:39 pm

Paret wrote:Did it really take you a whole year to get this?

A whole year !! :shock:

...FYI, it's my newly purchased machine.

by **prof** on Sun Jun 12, 2011 11:58 pm

How are you enjoying it?!

by **blueface** on Mon Jun 13, 2011 8:37 am

Hi Prof, enjoying every minute of it :lol:

. Come to think of it, is the rotary pump noisy to you?

by **Paret** on Mon Jun 13, 2011 10:20 am

blueface wrote:A whole year !! ...FYI, it's my newly purchased machine.

Sorry, I misread the dates.

by **cannonfodder** on Tue Jun 14, 2011 2:32 pm

blueface wrote:Hi Prof, enjoying every minute of it . Come to think of it, is the rotary pump noisy to you?

If a rotary pump is noisy, it is probably a vibration or your supply line/pressure is inadequate and the pump is causing cavitations. It is kind of like snorkeling and using a drinking straw to breathe through. You need a 3/8 inch line to adequately supply a rotary pump.


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