KSB Omega Series User Manual

Omega
39
Trouble--shooting Table
Pump pressure too low Pump pressure too high Flow rate too high Flow rate too low Power consumption too high Pump fails to pump liquid after being switched on Pump ceases to pump liquid Pump does not run smoothly (noise, vibrations) Inadmissible temperature increase at pump / seal casing Bearing temperature too high Exessive leakage at shaft seal Drive overloaded Leakage at pump
Cause Remedy
1
)
F F
In star / delta operation
motor hangs at star sta-
ge
Check electrical connections
Check switchgear.
F F F
Inadmissible air or gas
content in liquid
Vent
Check integrity of suction pipe, seal if
necessary
F F F F F
Air drawn in at pump in-
let
Correct suction conditions
Reduce flow velocity at suction pipe en-
try
Increase suction head
Check integrity of suction pipe and seal,
if necessary
Replace defective pipes.
F
Cavitation (rattling noise) Correct suction conditions
Check mode of operation
Increase suction head
Install pump at a lower level
F F
Foundation not rigid
enough
Check
Alter
F F F F F
Inadmissible parallel
operation
Re-- adjust operating point
Alter pump characteristic H
1).
F F
Shaft is out of true Renew / Replace
F F F F
Impeller rubs against ca-
sing components
Check rotor
Check impeller position
Check that the piping is connected wi-
thout transmitting any stresses or
strains.
1
) Consult KSB

KSB Omega Series Specifications

General

Type	Centrifugal Pump
Series	Omega
Operating Pressure	Up to 16 bar
Application	Water supply, irrigation
Impeller Type	Closed impeller
Casing Material	Cast iron, Stainless steel
Material	Cast iron, Bronze, Stainless steel