Electrical Connection - Wilo MS-L 1x4kW Instrucciones De Instalación Y Funcionamiento

INSTALLATION
4. Fix the switchgear using four screws (max. Ø:
4 mm) and appropriate anchors onto the wall.
5.3.3. Positioning of signal transmitters
For automatic control of the connected pump,
a corresponding level control device must be
installed. This needs to be provided by the cus-
tomer.
Float switches may be used as signal transmitters.
Connection of level sensors or electrodes is not
possible! The corresponding signal transmitters
must be installed according to the unit's installa-
tion plan.
DANGER - explosive atmosphere!
If the connected signal transmitters are used
in potentially explosive areas, there is a dan-
ger of fatal injuries from explosions! The con-
nected signal transmitters must always be
used outside of potentially explosive areas.
Installation must always be carried out by
a qualified electrician.
Note the following:
• When using float switches, ensure that these can
move freely in the operating space (pump cham-
ber, reservoir).
• The water level of the connected pump must not
fall below the minimum.
• The maximum switching frequency of the con-
nected pump must not be exceeded.

5.4. Electrical connection

POTENTIALLY fatal danger due to electrical
voltage!
Incorrect electrical connections can cause fa-
tal electric shocks. Electrical connections may
only be carried out by a qualified electrician
approved by the local energy supply company,
in accordance with locally applicable regula-
tions.
DANGER - explosive atmosphere!
If the connected pump and signal transmitter
are used in potentially explosive areas, there
is a danger of fatal injuries from explosions!
The connected pump and signal transmitter
must always be used outside of potentially
explosive areas. Installation must always be
carried out by a qualified electrician.
NOTE
• Depending on the system's impedance and the
connected consumers' max. no. of connections/
hour, voltage fluctuations or voltage drops may
occur. Always have the electrical connections
carried out by an electrician authorised by the
local energy supply company.
• Observe the installation and operating in-
structions for the connected pump and signal
transmitters.
• The mains connection current and voltage must
be as stated on the rating plate.
Installation and operating instructions Wilo-Control MS-L 1x4kW
• All-pole disconnecting, K-type circuit breakers
must be installed!
• Max. fuse protection on mains side: 16 A
• On switchgears without a power supply sepa-
ration device (O version: without main switch or
plug) this must be provided by the customer!
• It is recommended a residual-current-operated
protection switch (RCD, type A, sinus wave-form
current) be installed. Observe the local laws and
regulations on this too!
• Route the power supply cable in accordance with
the valid norms and regulations and according to
the wiring diagram.
• Ground the system (switchgear and all electric
consumers) in accordance with the regulations.
Fig. 2.: Overview of individual components
A Switchgear with main switch
W Switchgear with plug
C Switchgear without main switch and plug
1 Main switch
2 Motor contactor
3 Terminal strip
4 Earth terminals
5.4.1. Switchgear mains connection - with main
switch
Insert the cable ends of the power supply cable
laid on-site through the threaded cable connec-
tions and secure them accordingly.
Connect the wires to the main switch as follows:
• Mains connection 1~230 V:
• Cable: 3-core
• Terminals: 4/T2 (L), N (N)
• The protective earth conductor (PE) is connect-
ed to the earth terminal (;).
• DIP switch position "8": OFF (bottom position)
NOTE
To function correctly, 2 bridges (supplied) must
be installed on the mains terminal strip:
• Terminal 1 and 2
• Terminal 3 and 4
• Mains connection 3~400 V:
• Cable: 5-core
• Terminals: 2/T1 (L1), 4/T2 (L2), 6/T3 (L3), N (N)
• The protective earth conductor (PE) is connect-
ed to the earth terminal (;).
• DIP switch position "8": ON (top position)
• A clockwise rotating field must be present!
5.4.2. Switchgear mains connection - with plug ("S"
version)
Insert the plug into the socket:
• Mains connection 1~230 V: Shock-proof socket
• Mains connection 3~400 V: CEE socket (a clock-
wise rotating field must be present)
English
5 DIP switch
Potentiometer for fol-
6
low-up time
Rechargeable battery
7
installation location
8 Mains terminal strip
31