11.120.310 Sequence of operation.
This section is included in your selections.
When a start signal is initiated by the control system, the starter of the respective pump motor shall be energized, provided the following permissives (as applicable) are met:
(a) There is sufficient water in the wetwell (water level is above the emergency low level cut-off).
(b) There is no undervoltage in any phase and there is no phase reversal.
(c) There is no pump lock-out due to overload, seal failure, valve failure or other abnormalities.
The ultrasonic transducer pump control schematic and the wastewater pump motor control schematic are shown on Drawing DG-08-04. (Design Guideline DG-08 § 16.3, dated August 2006)