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7. Electrical connection
All electrical connections must be carried out by a
qualified electrician in accordance with local
regulations.
Observe all currently valid national and local
regulations relating to safety and accident
prevention.
Warning
Before making any electrical connections,
make sure that the fuses have been
removed or the mains switch has been
switched off. Make sure that the power
supply cannot be accidentally switched on.
The mixer must be connected to an
external mains switch with a minimum
contact gap of 3 mm in all poles.
The supply voltage and frequency are marked on the
nameplate. Make sure that the mixer is suitable for
the power supply available at the installation site.
The mixer is supplied complete with a mains supply
cable of 10 metres.
The motor is not designed for operation via
Caution
a frequency converter.
7.1 Motor protection
The motor is protected against overheating by a
thermal switch.
When the maximum winding temperature is reached,
the switch will open the circuit and stop the motor.
When the windings have cooled to normal
temperature, the switch will close the circuit and the
motor will restart automatically, depending on the
installation.
The motor must be protected against
overload via an external motor-protective
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circuit breaker. The circuit breaker setting
must not exceed the rated motor current.
Fasten the power supply cable so that it
cannot fall down and be caught in the
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propeller during operation and so that it is
not exposed to constant vibrations
involving the risk of damage.
7.2 Direction of rotation
When you have carried out the electrical
connections, make sure that the mixer propeller is
rotating in the correct direction. When viewed from
the propeller end, it must rotate clockwise.
If the propeller rotates in the wrong direction,
interchange two phases of the mains supply, L1, L2,
L3.
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8. Startup
Before startup
•
Make sure that the propeller is rotating in the
correct direction. See section
rotation.
•
Make sure that the mixer is completely
submerged in the liquid to be mixed.
The mixer must always be submerged
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during operation.
•
Make sure that the motor cable is thoroughly
fixed and cannot get caught in the propeller.
•
Make sure that there are no solid objects in the
pit or tank.
•
Make sure that no persons can fall into the pit or
tank.
If the mixer has not been used for a long
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period, make sure that the propeller can
rotate freely. If not, check the shaft seal.
The mixer motor and the shaft seal housing are filled
with oil. It is not necessary to check the oil level
before startup.
9. Service
Warning
Before starting any work on the mixer,
make sure that the fuses have been
removed or the mains switch has been
switched off. Make sure that the power
supply cannot be accidentally switched on.
The built-in thermal switch cuts in
automatically when the motor has cooled
to normal temperature.
All rotating parts must have stopped
moving.
Before starting any work on a mixer used to handle
liquids which could constitute a hazard to health,
carry out thorough cleaning and venting of mixer, pit
or tank according to local regulations.
9.1 Spare parts
Always replace damaged mixer parts with new
approved parts. Do not recondition motor parts by
machining, retapping, welding, etc.
7.2 Direction of
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