Performance Curves; App 53 Flow At Different Rpm - Danfoss APP Series Installation, Operation And Maintenance Manual

Operation guide
5.

Performance curves

24 | 180R9346 | AQ240486503020en-001702
Installation, Operation and Maintenance APP 53-92 pumps
If the flow required and the rotation speed (rpm)
of the pump is known, it is easy to select the
pump, fitting the application best, by using the
diagram below.

5.1 APP 53 flow at different rpm

90,00
85,00
80,00
75,00
70,00
65,00
60,00
55,00
50,00
45,00
40,00
35,00
30,00
25,00
20,00
400,00
380,00
360,00
340,00
320,00
300,00
280,00
260,00
240,00
220,00
200,00
180,00
160,00
140,00
120,00
100,00
Furthermore, this diagram shows that the
flow can be changed by changing the rotation
speed of the pump. The flow/rpm ratio is
constant, and the "required" flow can be
obtained by changing the rotation speed to a
corresponding value. Thus, the required rpm
can be determined as:
Required flow x Rated rpm
Required rpm =
Rated flow
Speed [RPM]
Speed [RPM]
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