2
6
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