When ordering this series control you will need to replace the # with the number of aerators you want to power. The ALTC‑#ATU‑2A by RJR Controls is a duplex aerobic control panel built for spray aerobic systems, supporting up to two 120 VAC pumps and 1–6 linear/rotary aerators. It features alternating pump operation on demand, aerator pressure-switch monitoring, latching high-water alarms, and includes alarm test/mute and pump test switches, all in a UL‑listed 4X enclosure. • PUMP – Two 120 VAC-20 Amp circuit breakers. Demand Operation.• TIMER – Grasslin FM1STUZ 15 minute pin clock timer.• AERATOR – # designates 1-6 aerators. 120 VAC 10 Amp each.• ALTERNATING RELAY – Switches pumps after each pump cycle. Load selector switch allows load to be locked to either pump, or alternate between the two.• FLOATS – Low/Pump Start Stop, HWA, LAG/Demand secondary pump on and off. All floats are N/O.• ALARMS – Solid red light for high water. This control is a latching alarm. The control will remain in alarm state even if the water level returns to normal level. The alarm must be manually reset. Solid Amber light for the aerator alarm. 1⁄2# pressure switch for each aerator. Each pressure switch will have a green operational light.• Alarm Test-Mute-Run switch and Pump Test switch included.• UL listed 4X Enclosure H x W x D = 16” x 14” x 7” or 18” x 16” x 10”.
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