Problem Possible cause Remedy
Leakage from pump
body
Loose pump body screws Tighten screws
Wrongly installed O-ring Replace O-ring
Damaged O-ring Replace O-ring
Make sure that the material
is resistant to the media
Shaft break
Dry running, thermal-shock,
running against closed
valve, shock at
handling, corrosion
Replace shaft
Make sure that the material
is resistant to the media
Short of head Increase discharge head
(see section 2.3)
Magnet housing
damage
Dry running, excessive
wear, running against closed
valve, corrosion
Replace magnet housing
Make sure that the material
is resistant to the media
and that no dry running will
occur
Short of head Increase discharge head
(see section 2.3)
Impeller damage Excessive wear, corrosion Replace impeller
Make sure that the material
is resistant to the media
Impeller deformation Excessive temperature
Replace impeller (see
section 2.5)
Excessive temperature vs
system pressure
Replace impeller (see
section 2.6)
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