Why does the pump lose speed at regular intervals, for instance, every second minute? This is the low-flow stop test function, which measures the flow in order to stop the pump when there is low or no flow. The alarm will be reset automatically when the inlet pressure is again below the pressure limit. Why does the pump indicate alarm if the inlet pressure is too high? This may be an indication that there is a fault in the installation that may cause damage to the pump. Why do I need to prime the pump more than once? If the suction lift is higher than 6 m, or 20 feet, the pump may need to be primed more than once. If a SCALA pump is placed at more than a 15 degrees angle in any direction, there is risk of strongly reduced functionality and lifetime as well as damage to the pump. If a SCALA pump is placed up to a 15 degrees angle in any direction, there is risk of bad cooling and self-priming. If a SCALA pump is placed vertically with inlet and outlet ports pointing upwards, it will not handle air very well, and its self-priming capabilities will be reduced. This will not damage the motor, but it may overheat. If a SCALA pump is placed vertically with inlet and outlet ports pointing downwards, air may build up inside the cooling jacket. Why is it important that the pump is placed horizontally? A SCALA pump in horizontal position will operate at its optimum. This explains why we have chosen to let SCALA operate with a maximum inlet pressure of 6 bar - otherwise the design would be over dimensioned. Design standards prescribe that the outlet pressure of a pump must be added to its maximum permissible inlet pressure. SCALA has been tested up to 16 bar inlet pressure. Why is SCALA2 limited to 6 bar inlet pressure? SCALA2 is designed for PN 10, meaning that the pump can withstand 10 bar pressure. Why is it possible to set the set point higher than the pump can manage? You may be interested in raising the pump pressure in installations with a filter on the outlet side and a positive inlet pressure. If the required outlet pressure is set within the pump, performance range the alarm will be reset automatically. The pump will start again when a tap is opened, and it will operate at full speed and maximum performance and still show fault indication no 5. 3 minutes and still show fault indication no 5. When the tap is closed, the pump will stop after approx. Questions & Answers What happens if I set the set point too high? For instance, if I set the set point to 5 bar and the pump is lifting liquid from a depth of 8 m? The pump will operate normally, but show fault indication no 5. Note: With suction pressures greater than 60psi, a pressure reducing valve must be installed to the suction side of the pump.CAN NOT SET REQUIRED SYSTEM PRESSURE ABOVE 80 PSI. Safety Approvals: CE and UL & UL Drinking Water Approval.Built-in system Protection: Dry-running protection.Indoors they protect against dripping water. provides protection against falling rain, sleet, snow, and external ice formation. Enclosure Nema Rating: NEMA 3 intended for outdoor use primarily to provide a degree of protection against windblown dust, rain, sleet, and external ice formation.Carton Dimensions: 19" L, 10" W, 15" H Shipping.Power: 560 Watts Voltage: 115 volts Amps: 5 - 5.7.Maximum Ambient Temperature: Continuous operation 113 F.Maximum Liquid Temperature: 113 F (45 C).Maximum System Pressure: 145psi (10 bar).Pressure Adjustment Range: 22 to 80 psi.SCALA2 is suitable for houses with up to three floors and eight tapping points.Īccurate sizing of the pump can be based on the pump curve below and local norms and standards. That the pump performance will increase with increasing demand. The SCALA2 integrated speed control enables perfect water pressure at the taps, meaning The unit incorporates the controller, speed controlled drive, tank, sensors and non-return/check valve. The Grundfos SCALA2 is a fully integrated, self-priming, compact all-in-one water pump for pressure boosting in domestic applications. Grundfos SCALA2 (98562818) variable speed, constant pressure system.
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