Operating Modes; Technical Data; Type Code; Scope Of Delivery - Wilo Sub TWU 3 High Speed Einbau- Und Betriebsanleitung

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4.4. operating modes

4.4.1. operating mode "S1" (continuous operation)
The pump can operate continuously at the rated
load without exceeding the maximum permissible
temperature.

4.5. Technical data

Submersible motor pump:
• Mains supply: 1~230 V, 50/60 Hz
(TWU 3-...-HS-ECP only using the supplied
frequency converter!)
• Rated motor output P
• Max. pump head: See name plate
• Max. pump flow: See name plate
• Activation type:
• HS-I: direct
• HS-ECP: directly using the added frequency
converter
• Liquid temperature: 3 to 35 °C
• Protection class: IP 58
• Insulation class: F
• Speed: max. 8400 rpm
• Max. submersion: 150 m
• Starts per hour: max. 30
• Max. sand content: 50 mg/m³
• Discharge port: Rp 1
• Min. flow at the motor: 0.08 m/s
• Operating modes
• Submerged: S1
• Emerged: -
External frequency converter
("HS-ECP" version):
• Mains supply: 1~230 V, 50/60 Hz
• Output: 3~230 V/max. 140 Hz/max. 1.5 kW
• Liquid temperature: 3 to 35 °C
• Ambient temperature: 5 to 40 °C
• Max. pressure: 7.5 bar
• Protection class: IP X5
• Connection: G 1¼
• Regulation function: constant pressure

4.6. Type code

Example: Wilo-Sub TWU 3-0305-HS-E-CP
• TWU = submersible motor pump
• 3 = diameter of the hydraulics in inches
• 03 = nominal flow volume in m³/h
• 05 = number of stages of the hydraulic system
• HS = High Speed version with speeds up to
8400 rpm
• E = frequency converter version
• E = external converter
• I = internal converter
• CP = regulation function
• CP = constant pressure regulation using
variable speed
• without = fixed speed up to 8400 rpm

4.7. Scope of delivery

• Unit with cable
• Installation and operation manual
36
: See name plate
2
• External frequency converter (only with
"HS-ECP")

4.8. Accessories (optionally available)

• Cooling jacket
• Level sensors
• Motor cable kits
• Casting kit for motor cable extension

5. installation

In order to prevent damage to the product or
serious injury during installation, the following
points must be observed:
• Installation work – assembly and installation of
the unit – may only be carried out by qualified
persons. The safety instructions must be followed
at all times.
• The unit must be inspected for transport damage
before carrying out any installation work.

5.1. General requirements

In cases where pumping is made through longer
discharge pipes (especially on long ascents),
attention is drawn to pressure surges.
Pressure surges can cause irreversible damage
to the unit/system and noisy operation result-
ing from valve knocking. This can be avoided by
taking appropriate measures (e.g. non-return
valves with adjustable closure time or laying the
discharge pipe in a special way).
After pumping water containing lime, flush out
the pump with clean water in order to prevent
encrustation and subsequent breakdowns.
If you are using level controllers, make sure that
the minimum water coverage is present. Air pock-
ets in the hydraulic housing or pipeline system
must be avoided at all costs and must be removed
using a suitable ventilation system. Protect the
unit from frost.

5.2. Types of installation

• Vertical stationary installation, submerged
• Horizontal stationary installation, submerged—
only to be used together with a cooling jacket!

5.3. The operating area

The operating area must be clean, free of coarse
solids, dry, frost-free and, if necessary, decon-
taminated. It must also be suitable for the unit.
The water supply must be sufficient for the max-
imum flow rate on the unit so that dry running
and/or air entry is prevented.
When installed in wells or boreholes, ensure that
the unit does not come into contact with the
walls. Therefore, ensure that the outer diameter
of the submersible motor pump is always smaller
than the inner diameter of the well or borehole.
When working in containers, wells or boreholes,
a second person must always be present for
safety reasons. If there is a risk of poisonous or
asphyxiating gases forming, the necessary pre-
cautions must be taken!
WILO SE 12/2012 Ed.03 DIN A4
INSTALLATION