Wilo Control MS-L 2x4kW Series - LED Indicators and Button Lock; Commissioning Procedures; Level Control and Safety Precautions

InstallationandoperatinginstructionsWilo-ControlMS-L2x4kW 37
COMMISSIONING English
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
Pump-dependent LEDs are displayed in two rows
usingthesymbols.Thetoprowshowsthecurrent
state of pump 1, the lower row the current state
of pump 2.
Mains connection indicator (green)
The LED lights up when the power supply and the
control voltage are present.
Automatic mode (green)
LED ashing: Switchgear is switched on but in
stand-by mode.
LED lights up: Automatic mode is activated.
LEDdoesnotlightup:Pumpisdeactivated.
Pump operation (green)
LED ashing: Pump running during the set fol-
low-up time.
LED lights up: Pump running.
Service interval indicator / monitoring of operat-
ing parameters (yellow)
LEDlightsup:Serviceintervalhasexpired
LEDashing:Operatingparametershavebeen
exceeded
High water (red)
LED lights up: High water level reached, high water
alarm has been triggered
"Excess current" fault (red)
LED ashing: 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.
P
1
Activating/deactivating the button lock
Simultaneously pressing down the pump 1 Manual
mode, Stop and Automatic mode buttons (for ap-
prox.1s),activates/deactivatesthebuttonlock.
AllLEDslightupforapprox.2secbywayofconr-
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.
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qualied 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(oat
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-
iedoperatingconditions.
7.1. Level control
Theoatswitchesareinstalledaccordingtothe
specications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.