Wilo Control MS-L 2x4kW Series - Mounting and Electrical Connection Basics

InstallationandoperatinginstructionsWilo-ControlMS-L2x4kW 33
INSTALLATION English
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qualied electrician.
Notethefollowing:
• Whenusingoat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qualied 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qualied electrician.
NOTE
• Depending on the system's impedance and the
connectedconsumers'max.no.ofconnections/
hour,voltageuctuations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.
• All-pole disconnecting, K-type circuit breakers
must be installed!
• Max.fuseprotectiononmainsside:25A(16Afor
S version with shock-proof/CEE16 plug)
• 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 6 DIP switch 2
2 Motor contactor 7
Potentiometer for fol-
low-up time
3 Terminal strip 8
Rechargeable battery
installation location
4 Earth terminals 9 Mains terminal strip
5 DIP switch 1
5.4.1. DIP switch
The switchgear has two DIP switches. These are
usedtoswitchvariousfunctionson/off:
• DIP switch 1, above the potentiometer
This DIP switch is used to adjust the rated current
for motor protection as well as activating or deac-
tivating the pump kick function and the internal
buzzer.
• DIP switch 2, under the potentiometer
This DIP switch is used to select the mains voltage
(standardversionand"O"versiononly),tostipu-
late the service intervals. activate/deactivate the
connected pumps and to monitor the operating
parameters (S version only).
5.4.2. 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2:DIPposition"1":OFF(bottom
position)