![]() ![]() A3: Alarm 3 was set to detect a high-level condition from a float switch.A2: Alarm 2 was set to detect Pump 1 overload trip status.A1: Alarm 1 was set to detect Pump 1 overload trip status.P2: Pump 2 run status: runtime, daily runtime, max cycle runtime alarm.P1: Pump 1 run status: runtime, daily runtime, max cycle runtime alarm.Using the path detailed in Figure 3, the RTU was monitoring the following data: Eventually, the impact of the failures resulted in spills, causing a process emergency.įigure 3: Cellular RTU Inputs and Outputs Ongoing failures at the station occurred over time with no apparent fatal outcomes. See Figure 1 for a detailed schematic of the pump. The control panel is equipped with across-the-line starters (DOL). The pumps are rated at 10HP, 240V, 3 phase, 26.0A, 300 GPM. The station average flow is 60k gallons per day. The pump control is cycle based (ON/OFF control). Objective: The intent was to set up real-time alarms to uncover the root cause of the failures, determine a resolution to the issue, and collect station data every ten minutes to prevent future troubles.ĭescription of System: The pump station is comprised of two sewage pumps installed in a twenty-foot-deep underground tank, using four float switches for level control. ![]() The station monitored was a Duplex Lift Station with ongoing failures.Ĭategory: Case Studies September 28, 2023 Solution in a municipal sewage lift station application. Abstract: This case study will show the benefits of a remote monitoring ![]()
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