6. MAINTENANCE/FAULTS
DANGER: Before starting any maintenance and repair work, di-
sconnect the pump from the power supply, and make sure it cannot
be switched back on by unauthorised persons.Damage to the con-
nection cable should always be repaired by a qualified electrician.
Have faults remedied by qualified skilled personnel only!
WARNING: Depending on the pump or system operating conditions
(fluid temperature), the entire pump can become very hot. Touching
the pump can cause burns! When removing the motor head or
pump, hot fluid may spurt out under high pressure. Allow the pump
to cool down beforehand.
Close the stop valves before removing the pump. Inside the machi-
ne there is always a strong magnetic field that can cause injury
and damage to property in the event of incorrect dismantling.
• It is only permitted to have the rotor removed from the motor hou-
sing by qualified personnel.
• If the unit consisting of impeller, bearing shield and rotor is pul-
led out of the motor, persons with medical aids, such as cardiac
pacemakers, insulin pumps, hearing aids, implants or similar are
at risk. Death, severe injury and damage to property may be the
result. For such persons, a professional medical assessment is
always necessary.
In assembled condition, the rotor's magnetic field is guided in the motor's
iron core. There is therefore no harmful magnetic field outside the machine.
After successful maintenance and repair work, install and connect the
pump according to the "Installation and electrical connection" chapter.
Switch on the pump according to the "Commissioning" chapter.
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