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 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.
• 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)
Summary of Contents for Control MS-L 2x4kW Series
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