Wilo Control MR-Lift - Basic Information; General properties; Technical specification; Control elements

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English
1. Basic Information
The MR-Lift device is intended to control a
pump’s work, depending on the liquid level. The
maineldsofapplicationinclude:
• Water pumping
• Sewage pumping
• Adjacent sewage pumping stations
• Pressure sewer system
Level can be measured by the use of hydrostat-
icpressure,externalsensor(4–20mA)oroat
switches. The pump is turned on directly by a
contactor.
States of failure are signalled by the use of three
relay contacts, a built-in sound alarm, and a con-
trol light on the front panel. The device is set up
and operated by the use of keys situated on the
front panel.
Thedesignandspecicationofthedevicewill
ensure long and non-failure operation in any
conditions. All the components used in the
construction of the electronic system have been
adjusted to operate in temperatures below zero.
As a result, the possibility of parameters going
out of adjustment, even in freezing temperatures,
has been reduced to a minimum. A high-perfor-
mance switching power supply has been applied
for powering the electronic system, which allows
the minimization of the intake of energy required
for powering the device from the network. The
use of surface assembly technology allowed the
creation of a device of compact construction
which is highly ergonomic in the course of instal-
lation works.
1.1. General properties
• LCDdisplay2x16
• Forced pump operation
• Built-in sound alarm
• Non-potential alarm of high level
• Collectivefailuresignalling:
potential and non-potential
• Overload protection
• Dry run protection
• Phase detection sensor
• Pump’s current indication
• Indication of liquid level in the tank
• Pump’s work-time meter
• Pump’s start up meter
• Saving failure messages after cutting power
supply off
• Wireless communication
1.2. Copyright
This operating and maintenance manual has been
copyrighted by the manufacturer. The operating
and maintenance manual is intended for use by
installation, operating and maintenance person-
nel. It contains technical regulations and drawings
which may not be reproduced or distributed,
either in whole or in part, used for purposes of
competition or shared with third parties. Illustra-
tions may differ from the original and serve only
asanexampleillustrations.
1.3. Rights of modication
The manufacturer reserves the right to make
technicalmodicationstosystemsorcompo-
nents.
1.4. Technical specication
Powerconsumption: 1.8W
Overvoltagecategory: III
Protectionrate: IP 65
Range of work
temperatures: -30°C to +50°C
Rangeofpressure: 0 - 1m of water column
Work voltage
-three-phasework:
-monophasework:
3/N/PE AC 400/230V 50Hz
1/N/PE AC 230V 50Hz
Max. switched power AC-3
-three-phasework:
-monophasework:
5.0kW
2.7kW
Relay contacts
load-carrying capacity
- non-potential
alarmcontacts:
-alarmcontact12VDC:
AC1 - 8A / 230V AC
DC1 - 8A / 24V DC
1.2A
Wireless communication
-standard:
- system transmission
power:
ISM 868MHz
25mW e.r.p.
(ETSIEN300220)
Dimensions: 250x220x118mm
(WxHxD)
Dimensionswithantenna: 265x366x118mm
(WxHxD)
1.5. Control elements
1.5.1. Control keys
“MANUAL OPERATION” Key
Turns on and off the pump regardless of the level
of liquid in the tank, in the case of the setting in
“Workwaterless–allowed”.If“Workwaterless-
disallowed” level must be higher than the STOP
level, otherwise the pump will not start, and the
display shows the message “Manual operation not
allowed”.
Themaximumpossibleoperationtimeinmanual
mode is 2 minutes. After this time, or after a
power failure the unit will return to the previous
mode:“0”or“Automaticoperation”.
“AUTOMATIC OPERATION” Key
The pump is controlled automatically depending
on the level of liquid in the tank and the control
settings. If you press the key again, the pump will
be switched to the “0” mode.