Button Lock; Commissioning; Level Control; Operation In Potentially Explosive Areas - Wilo Control MS-L 1x4kW Notice De Montage Et De Mise En Service

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6.1.2. Buttons
Manual mode
Pressing the button activates the pump inde-
pendently of the signal from the level control
device. The pump operates as long as the button is
held down. This function is intended for test mode.
Automatic mode
By pressing this button, automatic mode is activat-
ed. The pump is activated and deactivated de-
pending on the signal from the level control device.
When deactivating the pump, the pump follow-up
time is taken into account.
Stop
By pressing this button, automatic mode is deacti-
vated and the switchgear is set to stand-by mode.
The pump is not controlled according to the level.
Buzzer OFF/reset
By pressing this button, the integrated buzzer is
switched off during a warning and the collective
fault signal relay (SSM) is deactivated.
When held down for longer, the fault shown is
acknowledged and control is reenabled.
6.1.3. LED indicators
Automatic mode (green)
LED flashing: Switchgear is switched on but in
stand-by mode.
LED lights up: Automatic mode is activated.
Pump operation (green)
LED flashing: Pump running during the set fol-
low-up time.
LED lights up: Pump running.
High water (red)
LED lights up: High water level reached, high water
alarm has been triggered
"Excess current" fault (red)
LED flashing: Switchgear is operating without any
load.
LED lights up: Rated current has been exceeded.
"Winding monitoring" fault (red)
LED lights up: Temperature sensor has triggered.

6.2. Button lock

To prevent erroneous or unauthorised activation
of buttons, a lock can be activated.
Activating/deactivating the button lock
Simultaneously pressing the Manual mode, Stop
and Automatic mode buttons (for approx. 1 s),
activates/deactivates the button lock.
All LEDs light up for approx. 2 sec by way of confir-
mation.
If a button is pressed when the button lock is
active, all LEDs also light up for 2 sec.
NOTE
When the button lock is active, the buzzer can
be switched off and the collective fault signal
relay deactivated during an alarm signal with
the Buzzer OFF/Reset button. Faults cannot be
acknowledged nor can the control be released.
34

7. Commissioning

POTENTIALLY fatal danger due to electrical
voltage!
Incorrect electrical connections can cause fa-
tal electric shocks. Electrical connections may
only be inspected by a qualified electrician
approved by the local energy supply company,
in accordance with locally applicable regula-
tions.
NOTE
• Following a power supply interruption, the
switchgear will automatically start up in the last
operating mode set!
• Observe the installation and operating in-
structions for products provided on-site (float
switches, connected pumps) as well as the
system documentation!
The "Commissioning" section contains all the
important instructions for operating personnel
on commissioning and operating the switchgear
safely.
Always keep this manual either by the switchgear
or in a place specially reserved for it, where it is
accessible for all operating personnel at all times.
All persons working on or with the switchgear
must have been provided with this operating and
maintenance manual and have read and under-
stood it.
In order to prevent damage or serious injury when
commissioning the switchgear, the following
points must always be observed:
• The switchgear must be installed as described in
the "Installation" section and in accordance with
the applicable national regulations.
• The switchgear must be properly fused and
grounded.
• All unit safety devices and emergency cut-outs
must be connected and inspected to ensure that
they are working properly.
• The switchgear is suitable for use under the spec-
ified operating conditions.

7.1. Level control

The float switches are installed according to the
specifications for the unit and the desired switch-
ing points have been set.

7.2. Operation in potentially explosive areas

The switchgear may not be installed or used in
potentially explosive areas.
Connection of monitoring devices and signal
transmitters used within potentially explosive
areas is strictly prohibited.
WILO SE 02-2018 V05 DIN A4
COMMISSIONING