(A) A weatherproof NEMA 3R control panel shall be mounted in the location shown on the plans. Mounted in the cover of the panel shall be H-O-A switches, run lights and elapsed time counters for pumps No. 1 and 2 and a high water alarm light and audible alarm. The panel shall be situated so that the alarm light can be easily observed. The alarms shall be powered on a separate circuit from that providing power to the pumps. A 115-VAC ground fault weatherproof receptacle shall be provided outside the control panel. A 20-amp breaker shall be supplied in the panel for this receptacle. An adequately sized 115-VAC transformer shall be supplied for all control receptacle voltage.
(B) The control panel shall contain all the necessary equipment to control and alternate the two pumps. The pumps will be operated using the wastewater level in the wet well. Three mercury float switches shall be utilized in the wet well: pump off, lead pump on, lag pump on and high water alarm.
(C) The panel and all control equipment shall be properly protected against damage resulting from lightning and intense solar heating. Wiring from the control panel to the pumps shall be contained in water-proof, gas-proof conduits with no splices inside the pump chamber. No junction boxes will be allowed inside the wet well. Wiring for the pumps and level controls will be continuous with no splices from the floats to the control panel. Electric cables will be supported in wet well by clamps and a cable holder attached to the opening.
(Ord. passed 6-21-2011)