Temporary Decommissioning - Wilo Actun FIRST SPU 4 Instrucciones De Instalación Y Funcionamiento

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6.3.2 Ventilate the unit and piping
• Open all of the slide valves in the pressure pipe.
• Switch on the unit.
The air escapes through the corresponding air
vent valves. If no air vent valves have been in-
stalled, open the taps so that the air can escape!
6.3.3 Before switching on
Check the following prior to switching on the
submersible pump and ensure:
• Proper and secure cable routing (e.g. no loops)
• Firm fit of all components (pump, piping, etc.)
• Operating conditions:
• Temperature of the fluid
• Immersion depth
• Ambient temperature of external switchgear
(accessories)
• The suction chamber, pump sump and the pipe
are free of dirt.
• The pipe and product have been rinsed before
connecting to the supply network.
• An insulation check was carried out. For details,
see the "Maintenance and repair" section.
• The hydraulics housing has been flooded. It must
be completely filled by the fluid and there must
be no air in the housing. It can be vented by suit-
able venting devices in the system or, if available,
using venting screws on the pressure port.
• Half open the slide valve on the pressure side
during initial commissioning to ventilate the pipe
as necessary.
• The level control device or the installed dry-run-
ning protection works.
The use of an electrically operated shut-off
device can minimise or prevent water hammering.
The unit must can be switched on when the slide
valves are in the restricted or closed position.
A longer running time (> 5 min) with the slide
valves closed or in a severely restricted position
and dry running are forbidden!
6.3.4 After switching on
The rated current is briefly exceeded during the
start-up procedure. Once the start-up procedure
has completed, the operating current may no
longer exceed the rated current.
If the motor does not start immediately after the
pump is switched on, it must be switched off
without delay. The start pauses specified in the
"Technical data" section must be observed before
starting up again. If the fault recurs, the unit must
be switched off again immediately. The pump
should only be restarted once the fault has been
rectified.
6.4 Conduct during operation
When operating the pump, always follow the
locally applicable laws and regulations for work
safety, accident prevention and handling electri-
cal machinery. The operator is obliged to define
the responsibilities of employees to help ensure
16
DECOMMISSIONING/DISPOSAL
safe working practice. All personnel are responsi-
ble for ensuring that regulations are observed.
The pump is equipped with moving parts. During
operation, these parts rotate in order to pump the
fluid. Certain substances in the fluid can result in
very sharp edges forming on the moving parts.
WARNING rotating parts!
The rotating parts can crush and sever limbs.
Never reach into the hydraulics or touch
the rotating parts when the machine is in
operation. Before performing maintenance or
repairs, switch off the pump and wait for the
rotating parts to come to a standstill!
Check the following points at regular intervals:
• Operating voltage (permissible deviation +/- 5 %
of the rated voltage)
• Frequency (permissible deviation ±2 % of the
rated frequency)
• Current consumption (permissible deviation be-
tween phases is a maximum of 5 %)
• Switching frequency (see technical data)
• Air intake in the inlet, a guide plate/deflector
plate should be fitted if necessary
• Minimum water submersion
• Quiet and low-vibration running
• Gate valves in the pressure pipe must be open
7 Decommissioning/disposal
All work must be carried out with the greatest
care.
Proper protective clothing is to be worn.
When carrying out work in wells and/or tanks,
the respective local protection measures must be
observed in all cases. A second person must be
present for safety reasons.
Only auxiliary lifting devices that are in a techni-
cally perfect condition and lifting gear that has
been officially approved may be used for lowering
and raising the pump.
RISK of fatal injury due to malfunction!
Lifting gear and lifting devices must be in a
perfect technical condition. Work may only
commence if the lifting device has been
checked and found to be in perfect working
order. If it is not inspected, fatal injuries may
result!

7.1 Temporary decommissioning

For this type of shutdown, the pump remains
installed and is not cut off from the electricity
supply. In the event of temporary decommission-
ing the pump must remain completely immersed
so that it is protected from frost and ice. Ensure
that the temperature in the operating space and
of the fluid does not fall below +3 °C.
This ensures that the pump is always ready for
operation. For extended downtime, a regular
(monthly to quarterly) 5 minute function test
should be carried out.
WILO SE 12-2017 DIN A4