Fault description Cause Remedy Personnel
Foreign bodies in the
pump chamber
— Remove foreign bodies
—
Install a macerator (Multi-
crusher, Multichopper) and a
stone trap upstream, if neces-
sary
Mechanics
Diameter of the suction
line (side of inlet) too
large or too small*
— Adjust the pipe diameter to the
pump output of the rotary lobe
pump*
Mechanics
Suction height too large
(> 8 m / 26.25 ft)*
— Reduce the suction height
(lower the pump)*
Mechanics
Gas-emitting medium — Reduce the speed
—
Reduce the suction height
(lower the pump)*
Mechanics
Pipe not supported or
not supported close
enough to the unit
— Support the pipes sufficiently,
taking the weight of the pumped
medium into account
Mechanics
Rotors incorrectly
installed (
e.g. fastening
screw of the rotors not
tightened with the speci-
fied torque)
— Install the rotors properly Mechanics
Rotors or other compo-
nents broken by hard
foreign bodies
— Replace damaged parts
—
Install a macerator (Multi-
crusher, Multichopper) and a
stone trap upstream, if neces-
sary
— Only use the rotary lobe pump
for its intended purpose
Mechanics
Drive incorrectly
installed,
e.g. coupling
not aligned correctly
— Install drive correctly; align cou-
pling
Mechanics
Cam ring (coupling) or
V
-belt etc worn
— Replace cam ring or V-belt Mechanics
Damage to the pump
gear unit or drive gear
unit
— Please contact Börger customer
service
Mechanics
Operation
BA-Classic FL_en-US, 03.05.2018www.boerger.de / www.boerger.com100
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