The Grundfos CMBE 3-51 1-horsepower, 115-volt, 50/60 Hz, constant-pressure, multistage, centrifugal booster pump (98810924) is designed for water supply, irrigation, and dewatering in domestic and light-commercial applications. This easy-to-install, horizontal, compact system comes preassembled with a CME pump, a highly efficient ECM motor, a diaphragm tank, pressure gauge, pressure and flow sensor, controller, and a 5-way fitting with a non-return check valve.
The permanent-magnet motor provides an energy-saving, reliable, and quiet booster pumping solution; and an integrated speed controller maintains constant pressure by changing the motor speed as needed whenever the sensor detects a fluctuation in discharge pressure. The system also includes dry-running protection.
With its robust, stainless-steel construction, the Grundfos model CMBE 3-51 98810924 can be used to boost pressure for a wide range of purposes, including the supply of water for drinking (NSF 61/372 approved), gardening, and agriculture. The supply source could be tap water, chlorinated water, softened water, a shallow well, rainwater, condensate, groundwater, river or lake water, boiler feedwater, district heating water, and so on, as long as the liquids being transferred are clean, thin, with no solid particles or fibers that could cause wear or clog the pump, and are not aggressive or explosive (no diesel oil or other liquids containing oil).
The PSI Boost on this specific CBME 3-51 98810924 constant-pressure booster pump is 20-60 PSI at 0-15 GPM, and 20-40 PSI at 0-25 GPM (maybe 5-10% undersized on flow at higher pressures). On a simple control panel, the Grundfos Eye indicates system status, warnings, and alarms. One-touch control buttons make setpoint adjustment easy; and the free Grundfos GO App allows you to communicate with and control this pump from your mobile device.
In selecting an appropriately sized CMBE model, consider whether the pump will serve just one or several homes, apartments, a school or small office building, agriculture, or irrigation purposes to make sure you have the required pressure, flow, horsepower, and voltage to meet the demands on the system. Both 1x110-120V and 1x200-240V alternatives are available in the CMBE series. Please refer to the "CMBE Data Booklet" in the Resources section of this web page for the most complete set of Selection Guides and performance data to help you choose the best model of pump for your specific circumstances.
|Electrical Voltage:||110-120 Volt|
|Motor Size:||1 HP|