Presentation on theme: "SAMPLE SLIDES OF THE 1-DAY SEMINAR FOR PUMP USERS"— Presentation transcript:
1SAMPLE SLIDES OF THE 1-DAY SEMINAR FOR PUMP USERS As you will notice there are few words on these slides, your trainer will provide you with his experience which will make these images come alive providing you with the opportunity to reflect and ask questions, the more the better.All of the presentation slides are available in a binder supplied with the seminar.
29The effect of air (or gas) entrainment in the pump suction
30Causes and problems associated with pump systems • Excessive vibration causing damage to the impeller due to:- cavitation
31Causes and problems associated with pump systems • NPSH or low pressure at the inlet
32Opportunities with higher return Opportunities in electrical energy reductionPossible decrease in electrical consumption 1Winning conditions1. Replace a standard motor with a high efficiency motorReplace a standard efficiency motor with one that meets or surpasses the NEMA Premium standardTypically 1.5 to 5% and as much as 8%When the motors are defective or at the end of their useful life or when a motor must be replaced to accommodate a VFD.
34Opportunities with higher return Opportunities in electrical energy reductionPossible decrease in electrical consumption 1Winning conditions2. Install a variable frequency drive (VFD)A VFD can adjust the speed of a motor in response to a variable demand avoiding the throttling of control valves or the opening of recirculation control valves and the energy losses incurred.Typically 12 to 15% and as much as 27%Ideal solution when the flow varies between 40 and 60%