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Faults, causes and remedies
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WILO SE 2017-06
the hexagon nuts are excessively tightened, the impeller and the motor bear-
ings may get damaged!
8. Measure the gap between the suction port and hydraulics housing.
9. Adjust the laminated cores according to the measured dimensions and add another
metal sheet.
10.Unscrew the three hexagon nuts again until the hexagon nuts are flush with the
threaded bolt.
11.Reinsert the laminated cores and screw into place.
12.Tighten the hexagon nuts crosswise until the suction port is flush with the lamin-
ated cores.
13.Tighten the hexagon nuts crosswise firmly.
Observe the tightening torques in the
appendix!
14.Reach into the suction port from below and turn the impeller. When the gap is cor-
rectly set, the impeller can be rotated. If the gap is too small, the impeller is diffi-
cult to rotate. Repeat setting.
WARNING! Danger of amputation of limbs! Sharp
edges can form on the suction port and impeller. Wear safety gloves to protect
against cuts!
▶ Suction port correctly set. Pump can be reinstalled.
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Faults, causes and remedies
DANGER
Danger due to fluids hazardous to health!
Danger of death in case of pumps with fluids hazardous to health! Wear the follow-
ing protective equipment while performing the work:
• Closed safety goggles
• Breathing mask
• Protective gloves
⇒ The equipment listed here is the minimum requirement, observe the spe-
cifications of the work regulations! The operator must make sure that the
personnel has received and read the work regulations!
DANGER
Risk of death due to electrocution!
Improper conduct when carrying out electrical work can lead to death due to electric
shock! Electrical work must be carried out by a qualified electrician in accordance
with the locally applicable regulations.
DANGER
Potentially fatal danger due to dangerous autonomous work!
Work in chambers and narrow rooms as well as work involving risk of falling are dan-
gerous work. Such work may not be carried out autonomously! A second person
must be present for safety reasons.
WARNING
No persons are allowed to be present inside the working area of the
pump!
Persons may suffer (serious) injuries while the pump is in operation! No persons may
therefore be present inside the working area. If persons must enter the working area
of the pump, the pump must be decommissioned and secured against being
switched on again without authorisation.
