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Useful Tips
8.1
Flow Rate is Insufficient
8.2
Discharge Pressure is Insufficient
8.- Defective pump sealing.
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).
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 head.
· Check head losses in the suction pipe (partially
closed valve, foreign bodies).
4.- The impeller ducts are partially clogged.
· Check and release obstruction.
5.- Air enters the suction pipe.
· Check and repair damaged ducts and
defective joints.
6.-
Damaged internal 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
O'rings, 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.
Useful
Tips
for trouble-free operation
Summary of Contents for L Series
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