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Beschikbare talen
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Activate all safety devices and emergency stop
switches before initial operation.
•
Electrical and mechanical adjustments may only be
performed by professionals.
•
This machine is only suitable for use at the specified
operating conditions.
5.5. Preparatory work
The machine has been using state of the art technology
and has been constructed so that it will operate reliably
and for long periods under normal operating conditions.
This requires, however, that you comply with all advice
and instructions. Small oil leaks from the mechanical
seal during operation are harmless, however, must be re-
moved before lowering or immersion into the pumping
medium.
Please check the following points:
•
Cable routing - no loops, slightly taut
•
Liquid temperature and immersion depth check - see
machine data sheet
•
If a hose is used on the discharge side, it should be
flushed before use with fresh water so that no depos-
its cause blockages
•
For wet installation, the sump pump must be cleaned
•
The pressure and suction side pipe systems are to be
clean and all slides are to be opened.
•
The pump casing must be flooded, i.e. it must be
completely filled with the medium and there may be
no more air in it. The venting can be done by suitable
ventilation devices in the system, or, if available, by
venting screws at the outlet nozzle.
•
Check the accessories, pipe system and suspension
unit for firm and correct fit
•
Review the present level control or dry run protection
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An insulation test and a level control must be carried
out before commissioning.
5.6. Electrical
When installing and selection of electric lines and when
connecting the motor, the relevant local and VDE regu-
lations must be observed. The motor must be protected
by a motor protection circuit breaker. Connect the motor
connect as per the wiring diagram. Pay attention to the
direction of rotation! If rotation is in the wrong direction,
the machine will perform to specifications, and can be
damaged under adverse circumstances.
Check the operating voltage, and ensure there is uniform
power consumption by all phases in accordance with the
machine data sheet. Make sure that all temperature sen-
sors and monitoring devices, e.g. sealing chamber con-
trol, are connected and tested for function.
Risk of electrocution!
Improper use of electricity can be fatal! All pumps
with exposed cable ends must be connected by a
qualified electrician.
5.7. Direction of rotation
The machine connection must be performed according
to the circuit diagram. Testing the direction of rotation is
effected by a rotating field testing device.
All manuals and user guides at all-guides.com
This is connected parallel to the connection of the pump,
and shows the direction of rotation of the existing rotating
field. In order for the machine to work correctly, there
must be a clockwise rotating field. If an anticlockwise
rotating field is displayed, two phases must be swapped.
The stated specifications and performance data
can only be achieved if there is a clockwise rotating
field. The machine is not designed for if there is an
anticlockwise rotating field.
5.8. Motor protection
The minimum requirement is a thermal relay/motor pro-
tection circuit breaker with temperature compensation,
differential triggering, and reclosing lock in accordance
with VDE 0660 or similar national regulations. If the equip-
ment is connected to power grids where problems often
occur, we recommend the additional use of protective
devices (e.g. overvoltage protection or under voltage pro-
tection or phase failure relays, lightning protection, etc.).
When connecting the machine, the local and legal require-
ments must be adhered to.
5.9. Operation of static frequency converter
For inverter operation, the following points should be
noted:
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Minimum speed in sewage and drainage pumps
With wastewater and drainage pumps, no minimum
speed is specified. However, it is important to ensure that
the unit is working jolt and vibration-free, particularly at
lower speed ranges. The seals might otherwise be dam-
aged and leak. In addition, it must be ensured that the
minimum flow rate is not less than 0.7 m/s.
5.10. Types of startups
Types of startup using with cables with exposed ends
Direct start up
At full load, the motor protection circuit breaker should be
set to the rated current. In partial load operation is recom-
mended to set the motor protection circuit breaker 5%
above the measured current at the operating point.
Star Delta starting
If the motor protection is installed in the line: Set the mo-
tor protection to 0.58 x rated current. The starting time
in the Y circuit must be set so that the nominal speed is
reached before switching over to the circuit. This is gen-
erally the case after 3 seconds. If the motor protection is
not installed in the line: Set the motor protection to the
rated current at full load.
The pump is suitable for use with inverters according
to DIN EN 60034-17
Voltage peaks at the motor coil must be avoided, and,
where appropriate, provide suitable filters should be
fitted in the motor cable
Ensure the entire system is properly grounded.
The specifications of the frequency inverter manufac-
turer are to be observed
Under certain circumstances, shielded cable compli-
ant with EMC regulations is required
The leaflet „use of HOMA pumps with frequency
converters" should be observed
EngliSH | 43
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