Before Switching On; Temporary Shutdown - Wilo Drain S 50 Serie Einbau- Und Betriebanleitung

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6.5 Startup
Minor oil leakage in the mechanical shaft seal on deliv-
ery is no cause for concern. However, it must be
removed prior to submersion in the pumped liquid.
Keep out of the work area of the unit. No per-
sons are allowed in the work area during switch-
ing on and/or during operation.
Before switching on for the first time, the installation
must be checked as described in the "Installation"
chapter and an isolation check must be carried out
according to the "Maintenance" chapter.
Beware of serious injuries.
In portable installations, the unit can fall over
when it is switched on or during operation. Make
sure that the unit is positioned on a firm founda-
tion and that the pump pedestal is mounted cor-
rectly.
If the unit falls over, it must be switched off before
setting it up again.
In the case of versions with CEE plugs, note the IP pro-
tection class of the plug.

6.5.1 Before switching on

Check the following:
• Cable guidance – no loops, slightly taut
• Check the temperature of the pumped liquid and the
submersion depth – see technical data
• If a hose is used on the discharge side, it should be
flushed out with clean water before use to prevent any
sediment causing blockages
• Clean coarse deposits from the pump sump
• Clean the pipe systems on the discharge and intake
sides
• Open all sliders on the discharge and intake sides
• The hydraulic housing must be flooded, i.e. it should be
completely full of fluid, with no air in it at all. Bleeding
can be carried out using a suitable bleeding device in
the system, or, if available, with bleeder screws on the
discharge port.
• Check that all accessories, the pipe system and sus-
pension unit are properly fitted
• Check all level control and dry-run protection systems
6.5.2 After starting up
The rated current is briefly exceeded during the start-
up procedure. Once the start-up procedure has com-
pleted, the operating current may no longer exceed the
rated current.
If the motor does not start immediately after the unit is
switched on, it must be switched off without delay.
The start pauses specified in the "Technical data"
chapter must be adhered to before starting up again. If
the fault recurs, the unit must be switched off again
immediately. The unit may only be restarted, once the
fault has been rectified.
6.6 Safety rules during operation
When operating the product, always follow the locally
applicable laws and regulations for work safety, acci-
dent prevention and handling electrical machinery. To
40
All manuals and user guides at all-guides.com
help to ensure safe working practice, the responsibili-
ties of employees should be clearly set out by the
owner. All personnel are responsible for ensuring that
regulations are observed.
The product has moving parts. During operation, these
parts turn to pump the fluid. Certain materials in the
pumped fluid can cause very sharp edges to form on
the moving parts.
Beware of rotating parts!
The rotating parts can crush and sever limbs.
Never reach into the hydraulics or the moving
parts during operation.
Before performing maintenance or repairs, switch
off the product, disconnect from the mains and
secure against being switched on again without
permission. Let the moving parts come to a stop!
The following must be checked at regular intervals:
• Operating voltage (permissible deviation +/- 5 % of
the rated voltage)
• Frequency (permissible deviation +/- 2 % of the
rated frequency)
• Current consumption (permissible deviation
between phases is a maximum of 5 %)
• Voltage difference between the individual phases
(max. 1 %)
• Starts and stops per hour (see technical data)
• Air entry in the intake, a deflector plate should be fit-
ted if necessary
• Minimum water immersion level, level control unit,
dry-run protection
• Smooth running
• Shut-off valves in the intake and discharge pipes
must be open
7 Shut-down/disposal
All work must be carried out with the greatest care.
Proper protective clothing must be worn.
When carrying out work in basins and/or containers, the
respective local protection measures must be observed
in all cases. A second person must be present for safety
reasons.
Only hoisting gear that is in a technically perfect condi-
tion and load-carrying equipment that has been offi-
cially approved may be used for lowering and raising
the product.
Risk of fatal injury due to malfunctions!
Load-carrying equipment and hoisting gear must
be in a perfect technical condition. Work may only
commence if the hoisting gear has been checked
and found to be in perfect working order. If it is
not inspected, danger to personnel may result!

7.1 Temporary shutdown

For this type of shutdown, the product remains
installed and is not cut off from the electricity supply.
For temporary shutdown, the product must remain
completely submerged so that it is protected from
frost and ice. Ensure that the temperature of the
WILO SE 07/2014 V4.1