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low water cutoff pump control floods system
theald
Member Posts: 11
My 16 unit apt building has one pipe steam. In december the pump control stuck and filled the system with water. A contractor came and cleaned the Mcdonnell Miller 42S water cutoff. That worked for a few weeks and it stuck again. A light tap with a hammer on the housing shuts the pump off. I installed a new 42S head and everything seemed fine for a few days and it did it again. Any ideas? Pump is new this season, unless it's the wrong one I wouldn't thinks it is drawing too much current.
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Comments
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Those are pretty close to bulletproof -- but. It may need to be cleaned -- thoroughly. That is, taken completely apart and scrubbed out. Float OK? For that matter, how old is it? They do have a service lie.
Also, make sure that the connections to the boiler are clear.Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
I replaced the complete head, [float, switches etc.] 3 days ago. Checked the amp & hp rating of pump versus control. Pump only 3 months old.Jamie Hall said:Those are pretty close to bulletproof -- but. It may need to be cleaned -- thoroughly. That is, taken completely apart and scrubbed out. Float OK? For that matter, how old is it? They do have a service lie.
Also, make sure that the connections to the boiler are clear.
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Are you certain that it is the pump that overfills the boiler?
Is there any other method of adding water to the boiler, either auto or manual feed valve?0
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