en Application/use
8 WILO SE 2017-03
▪If the motor emerges during operation, the motor
housing can reach temperatures in excess of 40°C.
▪Open all gate valves in the piping on the suction and
pressure side.
▪Ensure minimum water submersion through dry-run-
ning protection.
▪Under normal operating conditions, the sound pressure
level of the device is below 85dB(A). However, the ac-
tual sound-pressure level depends on several factors:
– Installation depth
– Installation
– Fixation of accessories and pipe
– Duty point
– Immersion depth
▪If the device is operated under normal operating condi-
tions, the operator must measure the sound pressure.
Ear protection must be worn for sound pressure level of
85dB(A) and above and this must be noted in the work
regulations!
2.9 Maintenance tasks
▪Wear the following protective equipment:
– Closed safety goggles
– Safety shoes
– Safety gloves against cuts
▪Always carry out maintenance tasks outside the oper-
ating space/installation site.
▪Only carry out maintenance tasks mentioned in this in-
stallation and operating instructions.
▪Only original parts from the manufacturer may be used
for maintenance and repairs. Use of parts other than
the original parts releases the manufacturer from any
liability.
▪Collect any leakage of fluid and operating fluid immedi-
ately and dispose of it according to the locally applic-
able guidelines.
▪Store tools at the designated locations.
▪After completing work, reattach all safety and monitor-
ing devices and check that they function properly.
Changing operating fluid
In case of a defect, a pressure of several bar can build
up in the motor! This pressure escapes when the screw
plugs are opened. If screw plugs are opened without
due caution, they can be ejected at high speed! To
avoid injuries, observe the following instructions:
▪Adhere to the prescribed sequence of work steps.
▪Unscrew the screw plugs slowly, but never unscrew
them completely. As soon as the pressure escapes
(audible whistling or hissing of air), stop turning the
screw plug any further.
WARNING!Hot operating fluid can also spray out
when the pressure is escaping. This can result in
scalding! To avoid injuries, allow the motor to cool
down to the ambient temperature before carrying
out any work!
▪When the pressure has completely dissipated, fully un-
screw the screw plug.
2.10 Operating fluid
In the sealing chamber, the motor is filled with white
oil. Operating fluid must be replaced during regular
maintenance work and disposed off according to the
local guidelines.
2.11 Operator responsibilities
▪Installation and operating instructions must be in a lan-
guage which the personnel can understand.
▪Make sure that the personnel is relevantly trained for
the specified work.
▪Provide the necessary protective equipment and make
sure that the personnel wears it.
▪Safety and information signs mounted on the device
must be always legible.
▪Train the personnel pertaining to the functioning of the
system.
▪Eliminate risk from electrical current.
▪Equip hazardous components inside the system with an
on-site guard.
▪Identify and cordon off the work area.
▪To ensure safe working practice, define the responsib-
ilities of the employees.
Children and persons below 16years or with reduced
physical, sensory or mental capacities or limited experi-
ence are prohibited from handling the device! A techni-
cian must supervise persons below 18years!
3 Application/use
3.1 Intended use
Submersible pumps are suitable for pumping:
▪Sewage containing faeces (in accordance with
EN12050-1)
▪Wastewater (with small amounts of sand and gravel)
▪Fluids with dry matter up to max. 8%
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