Design sequence sewage system control
Make your design for the sewage lift station on the following sequence of operation:
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All pumps OFF at the low level.
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1st pump ON at the second high level.
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1st & 2nd pumps ON at the third high level.
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All pumps ON at the fourth high level.
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Alarm signals shall be sent to the local control panel (light and audio) and to
the control room.
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When pumps are actuated they shell operate until the low level reached.
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If one of the pumps is shutdown or switch off next pump shall be
automatically selected to operate
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The leading pump shall be alternated so that no pump shall have two
successive starts.