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Useful Tips
Useful Tips
for trouble-free operation
9.1 Flow Rate is Insufficient
9.2 Discharge Pressure is Insufficient
8.- Pump sealing defective.
Possible Causes
Solutions
· Check and complete the filling of the system with
liquid.
· Check the delivery geometric height.
· Check pressure losses in the delivery pipe
(partially closed valve, foreign bodies, back
pressure too low).
2.- The discharge head is too high (higher than that
for which the pump was selected).
1.- The pump is not primed.
3.- The suction lift is too high (insufficient NPSH).
· Check that NPSHavailable > NPSHrequired
· Check suction geometric height.
· Check head losses in the suction pipe (partially
closed valve, foreign bodies).
4.- The impeller ducts are partially clogged. · Che
ck and release obstruction.
5.- Air enters the suction pipe.
· Check and repair damaged ducts and
defective joints.
6.- Damaged interna
l mechanical adjustments of the pump.
· Consider a pump repair.
7.- The foot valve or pipe is not sufficiently
submerged.
· Check and submerge as necessary.
· Check and replace all pump sealing parts such as
Orings, mechanical seals or gaskets.
2.- Damaged
internal mechanical adjustments of the
pump.
Possible Causes Solutions
1.- Air enters the suction pipe.
· Check and repair damaged ducts and
defective joints.
· Consider a pump repair.
3.- The viscosity of the liquid is higher than initially
expected.
· Check and consult the
manufacturer.
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