Motor Protection And Activation Types; Start-Up; Electrical System; Rotation Direction Check - Wilo SUB TWU 3 Notice De Montage Et De Mise En Service

START-UP

5. Put the cover back on the bottom of the housing
and refit both screws in the housing.
6. Now guide the power cable to the switchbox.
Make sure that the cable is laid safely and does
not pose a risk to anyone (e.g. trip hazard).
7. Connect the power cable in the switchbox.
5.6.4. Monitoring device connections
The monitoring devices are set up using the
frequency converter and do not need to be
connected separately.
overview of monitoring devices
Protective function
Undervoltage
Overvoltage
Short circuit
Temperature (frequency converter)
Dry running
Leakage*
Key:
• x = integrated
• - = provided by customer
• * = Leak monitoring is switched off in the factory
and must first be activated using the menu!
Please refer to the "Setting the operating
parameters" section.
• On the version with the external frequency
converter "...-HS-ECP", the error messages are
shown on the display of the frequency converter
and confirmed/reset accordingly.
• On the version with the internal frequency
converter "...-HS-I", the pump is switched off
automatically when there is an error. It can only
be switched on again after the system has been
reset at the main switch.

5.7. Motor protection and activation types

5.7.1. Motor protection
The minimum requirement is a thermal relay/mo-
tor protection switch with temperature compen-
sation, differential triggering and an anti-reacti-
vation device in accordance with VDE 0660 or the
appropriate national regulations.
We also recommend installing a residual current
circuit breaker.
Local and national regulations must be adhered
to when connecting the pump.
5.7.2. Activation types
Direct activation
At full load, the motor protection should be set
to the rated current shown on the name plate.
At partial load, we recommend that the motor
protection be set 5 % above the current mea-
sured at the operating point.
Installation and operating instructions Wilo-Sub TWU 3/High Speed
HS-ECP HS-i
x x
x x
x x
x x
x -
x -
6. Start-up
The "Start-up" section contains all the import-
ant instructions for the operating personnel for
starting up and operating the pump.
The following conditions must be adhered to and
monitored:
• Type of installation
• Operating mode
• Minimum water coverage / max. submersion
if the machine has not been operated for an
extended period, also check these conditions
and rectify any identified faults.
Always keep this manual either by the unit or in a
place specially reserved for it, where it is accessi-
ble for the entire operating personnel at all times.
In order to prevent damage or serious injury when
starting up the unit, the following points must
always be observed:
• The product may only be started up by q ualified,
trained persons. The safety advice must be fol-
lowed at all times.
• All persons working on or with the pump must
have received, read and understood this operating
and maintenance manual.
• All safety devices and emergency cut-outs must
be connected and checked to ensure that they
work properly.
• Electrical and mechanical adjustments must be
made by specialist staff.
• The pump is suitable for use under the specified
operating conditions.
• The work area of the pump is not a recreational
area and is to be kept free of people! No persons
are allowed in the work area during start-up or
operation.
• A second person must be present when working
in shafts. Adequate ventilation must be ensured
if there is danger of poisonous gases forming.

6.1. Electrical system

Connect the unit and the power supply cables
installed as described in the "Installation" section
and in accordance with the VDE guidelines and
applicable national regulations.
The unit must be properly protected and
grounded.
Pay attention to the direction of rotation. If the
direction of rotation is incorrect, the unit will not
perform as specified and may be damaged.
Make sure all monitoring devices are connected
and have been tested.
ELECTRiCAL hazard!
Electrical current can cause fatal injuries if
not handled correctly! All units with free cable
ends (i.e. without plugs) must be connected
by a qualified electrician.

6.2. Rotation direction check

The frequency converter controls the direction
of rotation.
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