Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
General data<strong>CHI</strong>, <strong>CHI</strong>EE-pumpsGrundfos pumps equipped with Grundfos MLE motorsare called E-pumps. <strong>CHI</strong>E pumps belong to the E-pumpsfamily.The pumps are fitted with the single-phase GrundfosMLE motor with built-in PI-controller enabling connectionto external control signals.The MLE motor offers the following features:• Built-in PI-controller,• optional connection to external control signals,• setpoint setting on the unit itself, and• communication with the Grundfos remote controlR100.Through frequency control the MLE motor enablescontinuously variable control of the motor speed. Thusthe pump can operate in any duty point in the rangebetween pump min. and max. performance curves.H[m]Uncontrolled operationHConstant curveThe fitting of a sensor at a later stage opens the possibilityof control on the basis of pressure, differentialpressure, temperature, differential temperature or flow.The <strong>CHI</strong>E pumps are the ideal solution in a number ofapplications characterized by a need for variable flowat constant pressure. Depending on the nature of theapplication, the pumps offer energy savings, increasedcomfort or improved processing.<strong>CHI</strong>E-Plus—a compact one-pump boosterWith <strong>CHI</strong>E-Plus, a pressure sensor and a smalldiaphragm tank are added to build a complete, compactpressure booster supplying constant pressure.QTM01 0925 279700 Q [m³/h]TM01 4916 1099<strong>CHI</strong>E <strong>Pump</strong>s<strong>CHI</strong>E is a unique product combining stainless steel materialsin all parts in contact with the pumped liquid witha compact design and an MLE motor.This makes <strong>CHI</strong>E very suitable for industrial applicationsrequiring a stainless steel product combined with thevariable pump performance feature.<strong>CHI</strong>E can operate in uncontrolled operating modeenabling pump performance control by an externalsignal.Alternatively, the pump can operate in controlled operatingmode enabling e.g. a constant pressure to beestablished by means of the built-in PI-controller and aconnected sensor.Other sensor types such as flow, temperature, differentialtemperature or differential pressure can also beconnected.<strong>CHI</strong>E incorporates a stop function ensuring that thepump automatically stops if the water demand drops toa very low level or disappears altogether. The methodgives good total operating economy irrespective of thewater demand, and the pump is not subjected to overheatingand the subsequent risk of damage to the shaftseal.TM01 0678 19977
Change language