GRUNDFOS PRODUCT GUIDE

FunctionsDMHFunctional overviewCapacity controlDMH B DMH ARCapacity controlStroke-frequency control•Stroke-length adjustment • •Control panelRed light for stopped pump and error signals•Green light when pump is running•Control-panel lock•[Start/Stop] button•Front-mounted interface•Wall-mounted interface•Operating modesManual control • •Pulse control•Analog 0/4-20 mA control•Pulse-based batch control•Functions/optionsAlarm outputs•Dosing controller output•Leak detection(optional diaphragm breakage indication)• •Dual-level control (requires level controller, availableon selected sizes)•Pulse memory (saves up to 65,000 pulses)•Operating-hours counter•Remote on/off•0/4-20 mA output •Available in duplex versions(Check sizing chart for availability)• •Fig. 7 The capacity is controlled by adjusting the strokelengthQ[GPH]TM03 2023 3505l [%]TM03 8854 2707Fig. 5 DMH BTM03 2133 3705Fig. 8 Relation between stroke length and capacityDMH BOn the DMH B, the capacity is set by means of thestroke-length adjustment knob. The stroke frequencyremains constant.As shown in fig. 10, the stroke frequency is constantwhile only the stroke length is adjusted.TM03 6124 4306TM03 2133 3705Fig. 6 DMH ARFig. 9 DMH B8