Re: Low Water

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Posted by doug johnson on July 29, 2000 at 18:15:43:

In Reply to: Re: Low Water posted by Don on February 07, 2000 at 18:42:04:

: : : What is the normal operation for low water controls on a 35,000 lb/hr automatic (non-recycling) steam boiler? Should the first low water cut-out shut down the boiler or just sound an alarm?

: : At our plant we have two LWCO's that do both sound the alarm & close the fuel supply. We do have the extra bonus of a 3rd which is a probe type that does warn of a low water condition before the boiler goes offline & another probe which does the same but warns of high water.

: We have 2 low water alarms on our boilers.The first is just an alarm. A low water shut-off switch cuts the water off.These should be taken out and inspected during your annual P.M

the first lwco should cut the boielr off and sound an alarm the second usualy is of the manual reset type so that you have acknolaged that the primary one has failed

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