21
Question:
By how much must the pump speed rate be reduced to obtain a lower flow
rate?
Answer:
Required speed rate = Required flow rate x Permissible max. rpm
Permissible max flow rate
Question:
What motor pulley diameter is able to obtain this speed rate?
Answer:
Outer diam. of motor pulley = Outer diam. of pump pulley x Pump speed rate
Motor rpm
Question:
What if the motor pulley cannot be replaced?
Answer:
Outer diam. of pump pulley = Outer diam. of motor pulley x Motor rpm
Pump speed rate
Question:
If a motor has a lower rate than the max. rate indicated on the data plate,
which is the maximum flow rate that can be obtained?
Answer:
Maximum flow rate obtainable =
Motor rpm x Maximum flow rate indicated on data plate
Max. rpm on data plate
Question:
Which is the approximate power required to obtain the permissible max.
performance?
Answer:
Power required (kW) = Max flow rate (l/min) x Max pressure (bars)
524
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6- FAQ
Summary of Contents for 74.1030.97.3
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