When the pump is started for the first time, or when the shaft seal has been replaced, a certain run-in period is required before the leakage is reduced to an acceptable level. A slight leakage from the shaft seal of up to 10 ml per day or 8-10 drops per hour may occur. The shaft seal faces are lubricated by the pumped liquid. It is important to understand that, as Grundfos explains in the Scala manual, the main pump shaft is lubricated by the "pumped liquid" - in our case, water. source: retrieved 6 Normal Scala2 Pump Shaft Leakage: Shaft Seal Run-In We call it intelligent pump control and the result is perfect water pressure. If the pressure drops below the desired level, SCALA2 boosts its operation immediately to compensate for the loss of pressure. SCALA2 features a built-in sensor, which constantly measures the discharge pressure. Thanks to a water-cooled motor, SCALA2 even offers one of the lowest noise levels of any booster on the market. It packs pump, motor, tank, sensor, drive and non-return valve into one compact unit.Īnd with its intelligent pump control, SCALA2 automatically adjusts performance to both inlet pressure and water consumption in the home. SCALA2 is a fully integrated water booster pump providing perfect water pressure in all taps at all times – even with multiple taps and showers running at the same time. The SCALA2 is an advanced single-line jet-pump design that can pump from a depth of 8 metres (26 feet) of vertical lift. More Scala pump featuresĪn important feature noted by the company that protects the pump is that its design includes "dry-running" protection. Installing a rubber mat below the pump base reduces its already quiet sound level by reducing transfer of vibration to the building - a step we took that we found successful.
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