Product Description; Sound-Pressure; Intended Use And Fields Of Application - Wilo Sub TWU 3 HS Serie Notice De Montage Et De Mise En Service

PRODUCT DESCRIPTION

2.6 Fluids
Each fluid differs in respect of composition, cor-
rosiveness, abrasiveness, dry matter content and
in many other aspects. Generally, our pumps can
be used for many applications. Please note that if
requirements change (density, viscosity or general
composition), this can also affect many operating
parameters of the pump.
When using and/or replacing the pump in a differ-
ent fluid:
• The motor is filled with oil. The fluid can be
contaminated by this oil if the mechanical seal is
defective.
• When used in domestic hot water applications,
all the parts in contact with fluid must be fit for
the purpose. This must be checked in accordance
with the local regulations and laws.
The pumps must not be used in wastewater and
sewage and/or with fluids that are hazardous to
health.

2.7 Sound-pressure

The submersible pump generates a sound-pres-
sure level of approx. 70 dB (A) during operation.
However, the actual sound-pressure level
depends on several factors. These include, for
example, the installation depth, installation, fixa-
tion of accessories and piping, the duty point,
immersion depth, etc.
We recommend that the operator should take an
additional measurement at the workplace once
the unit is running at its duty point and under all
operating conditions.
CAUTION: Wear ear defenders!
According to applicable laws and regula-
tions, ear protection must be worn if the
sound-pressure level is 85 dB (A) or more! The
end-user must make sure that this is complied
with!
2.8 CE marking
The CE marking is attached to the rating plate.
3 Product description
The pump is manufactured with great care and is
subject to constant quality controls. Trouble-free
operation is guaranteed if the device is installed
and maintained correctly.

3.1 Intended use and fields of application

ELECTRICAL hazard
When using the pump in swimming pools or
other basins that can be entered, there is a
risk of electrocution. Note:
• Use is strictly forbidden if there are people in
the basin!
• If there are no people in the basin, protec-
tive measures must be taken according to
DIN EN 62638 (or the appropriate national
regulations).
Installation and operating instructions Wilo-Sub TWU 3-...-HS (High Speed)
RISK of fatal injury from magnetic field
(TWU 3-...-HS-ECP)!
The permanently magnetised rotor inside the
motor presents an acute danger to persons
with pacemakers. Non-observance results in
death or the most serious of injuries.
• Do not open the motor!
• Only allow Wilo customer service to disman-
tle and install the rotor for maintenance and
repair work!
• Persons with pacemakers must follow the
general behavioural guidelines that apply for
handling electrical equipment when working
on the pump!
NOTE (TWU 3-...-HS-ECP):
The magnets inside the motor do not pose
a danger provided the motor is completely
mounted. As such, the pump assembly does not
pose a special danger to persons with pacemak-
ers, who can safely approach the pump without
any restrictions.
DANGER – explosive fluids!
It is strictly prohibited to pump explosive
fluids (gasoline, kerosene etc.). The pumps are
not designed for these fluids!
The submersible pumps are suitable for:
• Water supply from boreholes, wells and rainwater
storage tanks
• Domestic water supply, sprinkling and irrigation
• Pumping water without long-fibre and abrasive
constituents
The submersible pumps must not be used for
pumping:
• Wastewater
• Sewage/faeces
• Untreated sewage
Intended use includes compliance with this man-
ual. Any other use is regarded as non-compliant
with the intended use.
3.1.1 Pumping drinking water
When used to pump drinking water, the local
guidelines/laws/regulations must be checked to
establish whether the pump is suitable for this
application.
The pumps do not comply with the specifications
of TrinkwV and are not approved in accordance
with ACS or local guidelines e.g. KTW and elasto-
mer guidelines.
3.2 Set-up
The Wilo-Sub TWU 3-...-HS is a submersible
pump that is immersed in a stationary installation,
either vertically or horizontally, and operated via a
frequency converter.
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