Grundfos CMBE 3-62 is year 2021 grundfos’s latest inverter pump. This model is to replace UNI E CM3-5 (old model)
Grunfos CMBE3-62 is a 1.5HP pump with variable speed. So you dont have to worry that the HorsePower is too strong and might burst your pipe as the water pressure is adjustable. When one person turns on the tap, the pump will go low speed and when more people are using water, the pump will automatically speed up to maintain the 2.5bar pressure. Unlike regular pumps, when u turn on the water the pump operate at full speed and could go upto 5 bars depending on the spec of the pump, the more you use, the more pressure drops. Since CMBE3-62 runs on low speed when usage is low, noise and vibration will be lesser. Regular pumps even at low usage, the pump will go on full speed, similar to a ceiling fan, at high speed it is noisy and high vibration.
When you turn off the water CMBE3-62 will slowly stop and the pressure tank above acts like an absorber to reduce water hammering issue. When you turn off the water and you hear a loud banging sound, that is water hammering. As water is travelling at a high speed in the pipeline and when u suddenly turn off the water it is like a car travelling at high speed and suddenly crash into a wall, the momentum will cause a loud banging sound. As Grundfos CMBE3-62 is a variable speed pump, when usage is low, it will go low speed and hence less momentum = less noise, moreover with the pressure tank it helps to absorb some of the momentum as well.
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Grundfos CMBE 3-62 comes with dry run protection function while regular pressure tank pumps do not have this feature. Dry run protections means, if there is no water supply (pipe is dry) the pump will automatically stop, hence it will not overheat. Compared to a regular pressure tank pump, the pump will only stop when the build up water pressure hits cut off point such as 5 bar, if there is no water, the pump could not build up pressure, hence the pump will keep running non-stop and this will damage the pump.
So for old houses with old pipes, Grundfos CMBE3-62 is the best pump that you can get.
SPECIFICATIONS
Size : 344L x 217W x 440H mm
Connection Size : 1″ inlet & outlet
Electricity Consumption : 1100watt
Horsepower (HP) : 1.5hp
Rated Flow : 4.2 m³/h
Rated head : 62m
Warranty : 2 years
Features & Benefits
– Product Certified by SIRIM
– Quiet Operation <54dB(A)
– 2 years warranty
– Energy Saving
– Constant pressure driven by INVERTER
– Quality Assurance
– Longer life span
– Eliminate water hammering