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Added the recognition of new errors in RAS and introduced checking of pumps work. All pumps in RAS fish farm are duplicated. If automatic of pump is knocked out or the pressure is fell, the Siemens controller will issue an error and automatically disables a faulty pump. After one second the emergency pump will turn on.

But we have not considered a similar case, when someone in a manual mode, disables both pumps. In this case, Siemens controller will not send an error message, since the pumps are turned off manually by the operator. Now a warning about non-working two pumps circulate water between the pools with fish and filtration system will send our site. The same message he will send, if all the two pumps of biofilter and water ozonation system will be turned off.

Last changed: Feb 04 2010 at 3:45 PM

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