Grundfos MSS Series User manual

MSS, MLD
GRUNDFOS INSTRUCTIONS
Installation and operating instructions

Declaration of Conformity
We Grundfos declare under our sole responsibility that the products MSS
and MLD, to which this declaration relates, are in conformity with the Coun-
cil Directives on the approximation of the laws of the EC Member States
relating to
— Machinery (98/37/EC).
Standard used: EN ISO 12100.
— Electromagnetic compatibility (89/336/EEC).
Standards used: EN 61000-6-2 and EN 61000-6-3.
— Electrical equipment designed for use within certain voltage limits
(73/23/EEC) [95].
Standards used: EN 60335-1: 1994, EN 60335-2-41: 1996 and
EN 60439-1.
— Construction products (89/106/EEC).
Standard used: EN 12050-1/-2.
Konformitätserklärung
Wir Grundfos erklären in alleiniger Verantwortung, dass die Produkte MSS
und MLD, auf die sich diese Erklärung bezieht, mit den folgenden Richtli-
nien des Rates zur Angleichung der Rechtsvorschriften der EG-Mitglied-
staaten übereinstimmen:
— Maschinen (98/37/EG).
Norm, die verwendet wurde: EN ISO 12100.
— Elektromagnetische Verträglichkeit (89/336/EWG).
Normen, die verwendet wurden: EN 61000-6-2 und EN 61000-6-3.
— Elektrische Betriebsmittel zur Verwendung innerhalb bestimmter Span-
nungsgrenzen (73/23/EWG) [95].
Normen, die verwendet wurden: EN 60335-1: 1994,
EN 60335-2-41: 1996 und EN 60439-1.
— Bauprodukte (89/106/EWG).
Norm, die verwendet wurde: EN 12050-1/-2.
Overensstemmelseserklæring
Vi Grundfos erklærer under ansvar, at produkterne MSS og MLD, som
denne erklæring omhandler, er i overensstemmelse med Rådets direktiver
om indbyrdes tilnærmelse til EF medlemsstaternes lovgivning om
— Maskiner (98/37/EF).
Anvendt standard: EN ISO 12100.
— Elektromagnetisk kompatibilitet (89/336/EØF).
Anvendte standarder: EN 61000-6-2 og EN 61000-6-3.
— Elektrisk materiel bestemt til anvendelse inden for visse spændings-
grænser (73/23/EØF) [95].
Anvendte standarder: EN 60335-1: 1994, EN 60335-2-41: 1996 og
EN 60439-1.
— Byggevarer (89/106/EØF).
Anvendt standard: EN 12050-1/-2.
Bjerringbro, 1st March 2006
Jan Strandgaard
Technical Director
2

3
MSS, MLD
Installation and operating instructions 4
Montage- und Betriebsanleitung 27
Monterings- og driftsinstruktion 52

4
CONTENTS
Page
1. General description 4
1.1 Applications 5
2. Transportation and storage 5
3. Product description 5
4. Lifting station 5
4.1 Type key, MSS and MLD 5
4.2 Nameplate, MSS and MLD 5
4.3 Collecting tank 6
4.4 Pump 6
4.5 Nameplate, motor 6
4.6 Shaft seal 6
4.7 Motor cable 6
4.8 Level sensor 6
5. Mechanical installation 6
5.1 General description 6
5.2 Mounting of collecting tank 7
5.3 Diaphragm pump 8
6. Controllers LC 109 and LCD 110 8
6.1 Type key, LC 109 and LCD 110 controllers 8
6.2 Nameplate, LCD 110 controller 8
6.3 Accessories 9
6.4 MSS - LC 109 9
6.5 MLD - LCD 110 9
6.6 Tank level above floor 9
6.7 Automatic test run 9
6.8 Functions 9
6.9 Electrical connection 10
6.10 Location and mounting of controller 10
6.11 Wiring diagram 12
7. Start-up 13
7.1 Direction of rotation 13
7.2 DIP switch setting 13
8. LC 109 controller 14
8.1 Control panel 14
8.2 Application 14
8.3 DIP switch 14
8.4 Battery back-up functions 15
8.5 Reset button and ON-OFF-AUTO selector switch 16
8.6 Normal operating conditions 16
8.7 Alarm conditions 17
9. LCD 110 controller 18
9.1 Control panel 18
9.2 Application 18
9.3 DIP switch 18
9.4 Battery back-up functions 19
9.5 Reset button and ON-OFF-AUTO selector switch 20
9.6 Normal operating conditions 20
9.7 Alarm conditions 21
10. Maintenance and service 23
10.1 Electrical maintenance 23
10.2 Cleaning the level sensor 23
10.3 Mechanical maintenance 23
10.4 Contaminated lifting station or components 23
11. Fault finding chart 24
11.1 Fuses 24
12. Technical data 25
12.1 Pump curve 26
13. Disposal 26
1. General description
Grundfos MSS and MLD Multilift lifting stations are designed for
the collection and pumping of wastewater with no free flow to
sewer level. The lifting stations are supplied complete with con-
troller LC 109 or LCD 110.
Fig. 1 MSS
Fig. 2 MLD
Prior to installation, read these installation and oper-
ating instructions. Installation and operation must
comply with local regulations and accepted codes of
good practice.
TM03 3348 0406
TM03 3648 0606
Pos. Description
1 Vertical inlet
2 Lifting eye
3Pump
4 Cleaning cover
5 Drain screw for forced opening of non-return valve
6 Non-return valve
7 Fixing points
8 Carrying handle
9 1" port for manually operated diaphragm pump
10 Nameplate
11 Cover with level sensor
12 Vent port

5
1.1 Applications
Grundfos MSS and MLD Multilift lifting stations are designed for
the collection and pumping of:
• wastewater
• sludge-containing water and
• domestic wastewater with discharge from water closets.
The lifting stations are capable of pumping liquids containing
fibres, textiles, faeces, etc. This makes them ideal for the collec-
tion and pumping of wastewater below sewer level from minor
buildings such as private dwellings, blocks of flats, hotels, restau-
rants, schools, etc.
The Multilift lifting stations are not designed for the pumping of
rainwater.
The lifting stations are supplied complete with one or two pumps
and a controller.
2. Transportation and storage
Note: The lifting station must be lifted by the carrying handles
cast in the bottom of the collecting tank, see pos. 8 in fig. 1 and 2.
For long periods of storage, the pumps and controllers must be
protected against moisture and heat.
After a long period of storage, the pumps should be inspected
before they are put into operation. Make sure that the impeller
can rotate freely.
3. Product description
The description of the MSS and MLD Multilift lifting stations is
divided into the following sections:
• Section 4. describes the lifting station with collecting tank,
pump and level sensor.
• Section 6. describes the controllers LC 109 and LCD 110 as
well as the functions of these controllers.
In 5. Mechanical installation and the following sections, these
components have been described as one unit as required.
4. Lifting station
Smell-tight and watertight lifting station complete with one or two
pumps. The lifting station includes a collecting tank with all nec-
essary ports for the connection of inlet pipe, discharge pipe, vent
pipe and a manually operated diaphragm pump, which is avail-
able as an accessory.
The MSS and MLD Multilift lifting stations are supplied complete
with single- or three-phase submersible pumps connected to the
LC 109 or LCD 110 controller incorporating a pneumatically/elec-
trically operated level switch.
The lifting station MSS has two horizontal inlets in the backside,
one horizontal inlet in the side and one vertical inlet in the top.
The centre of the horizontal inlet ports is 180 mm and 250 mm,
respectively, above floor level. MLD has one vertical inlet for con-
nection to vertical tubes or through a 90° bend to horizontal
tubes.
• The vertical inlet port of MSS can be connected to a 100 mm
PVC pipe. MLD can be connected to a 150 mm PVC pipe.
• The horizontal inlet port 180 mm above floor level is for con-
nection to Euro-standardized water closets.
• The horizontal inlet port 250 mm above floor level is for con-
nection of wall-mounted water closets.
See 5.1.1 Installation sketch.
The lifting station can be connected to a pipework with several
water closets. MSS is mainly designed for single-family houses
with one or two closets. MLD is designed for commercial use with
three or more closets.
4.1 Type key, MSS and MLD
4.2 Nameplate, MSS and MLD
Fig. 3 Nameplate, MSS and MLD
Lifting station Controller
MSS, 1-pump lifting station LC 109
MLD, 2-pump lifting station LCD 110
The motor lifting eye is only intended for lifting the
motor. Never lift or lower the lifting station by means
of the lifting eye.
Example M SS .22 .3 .4
Lifting station
SS = one pump
LD = two pumps
Output power, P2 / 100 (W)
1 = single-phase
3 = three-phase
2 = 2-pole motor
4 = 4-pole motor
TM03 3461 0406
Pos. Description
1 Type designation
2 Product number
3 Production week and year
4 Number of phases
5 Rated voltage
6 Rated current
7 Input power
8 Approval
9CEmark
10 Production country
11 Operating mode
12 Frequency
13 Max. flow rate
14 Min. head
15 Max. head
16 Max. liquid temperature
17 Weight
18 Production place
MSS.12.1.4
96610038
2006/05/
S3-40%-1min
3
230
7.6
Prod.- No.
P. c.
H min
Q max
A
I1/1
Type
Made in Germany
50
39.6
5.0
8.5
40
38
P1
Motor ~
H max
T max
DIN EN 12050-1
96075419
P1kW
VU
kg
C˚
m
G
m
m3
/h
Hz
1.6
11
12
13
14
15
16
17
1
2
3
4
5
6
7
8
9
10
18

6
4.3 Collecting tank
The tank volume and effective volume (volume between start and
stop) for MSS and MLD Multilift lifting stations appear from the
following table:
MLD Multilift lifting stations have two pumps, thus providing a
standby pump in case of pump failure or additional pump per-
formance if the inlet exceeds the performance of one pump.
MLD Multilift lifting stations must always be used if the wastewa-
ter flow must not be interrupted.
4.4 Pump
The pump impeller is designed as a free-flow impeller, which
ensures almost unchanged performance throughout the entire life
of the pump, see the pump curve in 12.1.
The stator housing of the motor is made of painted aluminium.
Three-phase pumps: If the phase sequence is wrong, the con-
troller indicates a fault and prevents the pump(s) from starting.
For direction of rotation, see 6.8.1 Control panel and 7.1 Direction
of rotation.
4.5 Nameplate, motor
Fig. 4 Nameplate, motor
4.6 Shaft seal
The shaft seal is lubricated for life and therefore requires no
maintenance.
4.7 Motor cable
The cable is fitted to the motor part via a cable entry. Enclosure
class IP 68.
4.8 Level sensor
The level sensor incorporates four pressure sensors. The level
sensor also functions as cover at the top of the collecting tank.
For selection of inlet level, see 7.2 DIP switch setting.
5. Mechanical installation
5.1 General description
Before installing the MSS and MLD Multilift lifting stations, ensure
that all local regulations covering venting, access to the stations,
etc. are observed.
A minimum space of 60 cm around the lifting station is required in
order to facilitate installation and service.
Ensure that no back-flow can occur in case of a high water level
in the sewage pipe buried in the street outside the building.
Back-flow can be prevented by fitting a goose neck or reversed
water seal. The highest point of the goose neck/reversed water
seal must be above street level.
The discharge pipe from the pump as well as the discharge pipe
from the manually operated diaphragm pump, if any, and the
drainage pump, if any, installed below floor level must also be fit-
ted with a goose neck or reversed water seal.
See 5.1.1 Installation sketch.
MSS MLD
Inlet level [mm] 180 250 min. 560
Tank volume [l] 66 66 270
Effective volume [l] 35 48 190
TM03 3618 0506
Pos. Description
19 Product number and model
20 Number of phases
21 Frequency
22 Input power
23 Shaft power
24 Power factor
25 Enclosure class
26 Production country
27 CE mark
28 Production week and year
29 Operating mode
30 Rated speed
31 Weight
32 Insulation class
33 Rated voltage
34 Rated current
Made in Germany
kW
Hz
~
96075378 - A
kW
96075389
P. c.
min-1
kg
n
Weight
0149 001
S3-40%-1min
1405
24
F
Insul.class
Prod.- No.
U
P2
V
A
I1/1
Motor
5.3
400
3
50
2.8
IP68
2.2
P1
0.77
22
23
21
20
19
24
25
26
27
32
31
30
29
28
33
34
COS $
The lifting station must not be covered.

7
5.1.1 Installation sketch
Fig. 5 Installation sketch
5.2 Mounting of collecting tank
Fasten the collecting tank to an even floor with the dowels, wash-
ers and screws supplied with the tank.
To facilitate service, it is advisable to fit isolating valves on the
inlet and discharge sides of the tank.
Inlet side: DN 100/DN 150.
Discharge side: DN 80/DN 100.
To avoid sediment build-up in the discharge pipe, the pipe - and
the lifting station - should be sized for a flow velocity of minimum
0.7 m/s. For vertical pipes, however, not lower than 1.0 m/s.
For PN 6 PVC pipes, for example, the following flows are required
to meet these requirements:
Flexible connecting pieces supplied:
1 connecting piece ø110 (outlet).
1 connecting piece ø75 (venting).
1 connecting piece ø110 (inlet).
The MLD is provided with a DN 150 inlet gasket.
The MSS is provided with a DN 100 inlet gasket.
Other pipes shown above are for both types.
The lifting station offers several connections. Drill out (ø127) or
cut off the desired connections, see fig. 6, and connect the pipes
as required by means of a pipe collar or similar device, see fig. 7.
The DN 150 vertical inlet of MLD is predrilled.
Note: Push the pipe 60 to 100 mm into the collar.
Fig. 6 Cutting and drilling of connections
TM03 3462 0406
Nominal diameter of pipe 80 mm 100 mm
Flow velocity of 0.7 m/s 14.2 m³/h 21.2 m³/h
Flow velocity of 1.0 m/s 20.2 m³/h 30.3 m³/h
When installing the pipes, it must be ensured that the
lifting station is not stressed by the pipework.
TM03 3457 0406

8
Fig. 7 Installation of isolating valve
Fig. 8 Minimum inlet height for MLD
Note: The minimum inlet level for MLD is 560 mm, see fig. 8.
The lifting stations also have a vertical DN 50 inlet port at the top
of the tank for inflow from washbasin, shower, etc.
Connect a DN 70 vent pipe to the tank by means of the flexible
connection supplied. The vent pipe must be led out into the open
air in accordance with local regulations.
A flexible connection can be ensured if a distance of approx. 5 cm
is left between the pipe ends of the inlet, discharge and vent
pipes and the ports of the lifting station.
5.3 Diaphragm pump
The optional, manually operated diaphragm pump is used for
draining the tank in the event of pump failure. The diaphragm
pump must be fitted with a non-return valve on the discharge
side. To facilitate servicing of the diaphragm pump, it is advisable
to fit a 1" isolating valve to the tank port.
5.3.1 Blanking flange
If a pump has to be removed for service, the tank can be provided
with a blanking flange in order to close it hermetically. The blank-
ing flange is available as an accessory. Fitted to MLD Multilift lift-
ing stations, the blanking flange also allows continued operation
by means of the remaining pump.
5.3.2 Drainage pump
If an MSS or MLD Multilift lifting station is installed in a cellar with
the risk of penetrating groundwater, it is advisable (in certain
countries required) to install a drainage pump in a separate pump
sump below floor level. The installation sketch in 5.1.1 shows a
lifting station installed in accordance with the regulations in force
for this type of lifting station.
Note: The collecting tank, pumps and cables may be flooded by
the pumped liquid for short levels. The controller must be
installed in a dry and well ventilated place.
6. Controllers LC 109 and LCD 110
The LC 109 and LCD 110 controllers are designed for the control
of MSS and MLD Multilift lifting stations.
The controllers incorporate the necessary components such as
contactors, control board with indicator lights for indication of
operating condition as well as a level input which, via a cable, is
activated directly by the sensors in the collecting tank.
The controller functions are described in 6.8 Functions.
The controller type, voltage variant, etc., appear from the type
designation on the nameplate placed on the side of the controller
cabinet.
The LC 109 and LCD 110 controllers are designed for
direct-on-line starting (DOL).
6.1 Type key, LC 109 and LCD 110 controllers
6.2 Nameplate, LCD 110 controller
Fig. 9 Nameplate, LCD 110 controller
TM03 3614 0406TM03 3613 0406
Make sure that no weight from the inlet, discharge
and vent pipes rests on the tank. Long pipe sections,
valves, etc. must be supported.
Never step on the lifting station.
Example LC 109 .230 .1 .7 .35
LC = 1-pump controller
LCD = 2-pump controller
109 = type designation
Supply voltage [V]
1 = single-phase
3 = three-phase
Maximum operating current per pump [A]
Run capacitor:
35 = 35 µF
50 = 50 µF
TM02 8525 0304
Pos. Description
1 Type designation
2 Product number
3 Version number
4 Rated voltage
5 Power consumption
6 Maximum back-up fuse
7 Weight
8 Maximum pump input current
9 Production year and week
10 Serial number
11 Maximum voltage at contactor
12 Maximum current at contactor
1 23
9
10
11
12
56784
LCD 110.400.3.5
96484094
12 W
0406
0001
400 V
2 A
V01
50/60 Hz
7A
3 X 400
16 A
3,7 kg

9
6.3 Accessories
Accessories for the controllers are described in the following sec-
tions.
6.3.1 Accumulator
An accumulator maintaining the alarm signal in case of supply
failure is available as an accessory. Fitted inside the controller via
a plug, the accumulator ensures that an alarm can be given within
9 hours after the electricity supply has been switched off.
The accumulator is partly charged on delivery. It will be fully
charged after 24 hours under voltage.After discharge, the charg-
ing time is approx. 24 hours. The accumulator is automatically
charged when the electricity supply is switched on.
Note: Used-up NiMH accumulators must be disposed of in
accordance with local regulations.
6.3.2 Hour and start counters
Hour and/or start counters are available as accessories. They are
also available as a combined unit.
6.4 MSS - LC 109
• When the liquid level in the collecting tank reaches the pump
starting level, the pump will start.
• After the stop signal has been given, the pump will run for
approx. 8 seconds (stop delay). The stop delay is adapted to
the tank capacity and the pump type. The factory settings
should only be changed if the tank is not sufficiently drained in
the application in question or if water hammering appears. For
example, if a high head is required, the tank cannot be suffi-
ciently drained during the stop delay, see "Switch 5, 6 and 7"
in 7.2 DIP switch setting.
• If the liquid level rises to alarm level, the pump will start and an
alarm is given until the liquid level is below alarm level. Then
the alarm indication is automatically reset by the controller. If
required, manual resetting of the alarm indication can be
selected, see "Switch 9" in 7.2 DIP switch setting.
6.5 MLD - LCD 110
The 2-pump controller ensures alternating operation of the
pumps.
• When the liquid level in the collecting tank reaches the pump
starting level, the first pump will start.
• If the liquid level rises further to the next starting level, the sec-
ond pump will start.
• A further rise in the liquid level after both pumps have started
will cause an alarm until the liquid level is below alarm level.
• After the stop signal has been given, the second pump will run
for approx. 15 seconds (stop delay). The stop delay is adapted
to the tank capacity and the pump type. The factory settings
should only be changed if the tank is not sufficiently drained in
the application in question or if water hammering appears. For
example, if a high head is required, the tank cannot be suffi-
ciently drained during the stop delay, see "Switch 5, 6 and 7"
in 7.2 DIP switch setting.
• After the stop signal has been given, the first pump will run for
approx. 13 seconds (stop delay).
• When the pump starting level is reached again, an automatic
pump changeover will take place (alternating operation).
• If the liquid level rises to alarm level, both pumps will start.
• Different stop times ensure an even load on the mains supply
and thus water hammer is prevented.
6.6 Tank level above floor
Fig. 10 Tank levels
6.7 Automatic test run
The controller is factory-set to "automatic test run", switch 4 in
position ON. When the function is active, a test run of 2 seconds
will be carried out if the pump/pumps have not been running for
24 hours.
The function can be deselected, see "Switch 4" in 7.2 DIP switch
setting.
6.8 Functions
The functions of the LC 109 and LCD 110 controllers are
described in the following sections.
6.8.1 Control panel
The LC 109 1-pump controller has a CU 211 module.
The LCD 110 2-pump controller has a CU 214 module.
TM03 3460 0406
MSS, 1-pump lifting station
Level Height above
floor [mm] Inlet level 180 mm Inlet level 250 mm
4 350 High-level alarm High-level alarm
3300 – –
2250 – Start
1180 Start –
MLD, 2-pump lifting station
Level Height above
floor [mm] Inlet level min. 560 mm
4 560 High-level alarm
3 510 Start - pump 2
2 460 Start - pump 1
181 Stop
Before making any work on lifting stations, etc., it
must be ensured that the electricity supply has been
switched off and that it cannot be accidentally
switched on.

10
6.9 Electrical connection
The electrical connection must be carried out in accordance with
local regulations.
The cable length between motor and controller is 4 metres. The
controller can be placed within the length of the cable.
The supply cable for the controller is approx. 1.5 metres.
The controller connected to the pump is to be mounted on a wall
in accordance with local regulations and 6.10 Location and
mounting of controller.
The operating voltage and frequency are marked on the pump
and controller nameplates. The voltage tolerance must be within
–10%/+6% of the rated voltage. Make sure that the lifting station
is suitable for the voltage and frequency available at the installa-
tion site.
Three-phase connection: Make sure that the phase sequence is
correct, see pos. 3 in 6.8.1 Control panel.
All cables/wires must be fitted through the cable entries and gas-
kets (IP 55).
Maximum back-up fuse is stated on the controller nameplate and
in the table in 12. Technical data.
If required according to local regulations, an external mains
switch must be installed.
Pump motors for MSS and MLD Multilift lifting stations have a
thermal switch incorporated in the motor windings. Via the con-
troller, the thermal switch disconnects the electricity supply to the
pump in case of excessive winding temperature.
The motor-protective circuit breaker, if installed, must be set to
the rated motor current, see pump nameplate.
Controllers for single-phase pumps also incorporate the nec-
essary run capacitors.
The lifting stations require no further motor protection.
The electrical connection must be carried out in accordance with
the marking on the supply cable to the controller.
• Single-phase lifting stations have a Schuko plug.
Note: In countries, where the Schuko plug is not used as
standard, this plug must be replaced according to local regu-
lations.
• Three-phase lifting stations have a CEE plug.
If the cables between pump and controller as well as the supply
cable have been disconnected, the electrical connection must be
carried out as shown in the wiring diagram, section 6.11.
An external fault indication device can be connected to one of the
two potential-free fault signal outputs (NO contacts) of the con-
troller. Maximum load: 250 VAC, 5 A, AC1.
6.10 Location and mounting of controller
The controller must be installed in a dry and well ventilated place.
When installed outdoors, the LC 109 and LCD 110 controllers
must be placed in a protective shed or cupboard.
The LC 109 and LCD 110 must not be exposed to direct sunlight.
Before mounting the controller, remove the transport protectors, if
any, from inside the cabinet.
Mount the LC 109 and LCD 110
• on a plane wall surface
• with the cable entries pointing downwards
(additional cable entries, if required, must be fitted in the bot-
tom plate of the cabinet)
• with four screws through the mounting holes in the back plate
of the cabinet, see fig. 11. The mounting holes must be bored
with a 4 mm bore. Fit the screws into the mounting holes and
tighten securely. Fit the plastic caps supplied with the control-
ler on the screws (IP 55).
Fig. 11 shows the dimensions of the controller cabinet for
wall-mounting.
Fig. 11 Controller cabinet for wall mounting
Before making any connections in the LC 109 or
LCD 110 or work on lifting stations, etc., it must be
ensured that the electricity supply has been switched
off and that it cannot be accidentally switched on.
Pump type Run capacitor
[µF] [VAC]
1.2 kW 35 400
1.5 kW 50 400
TM02 2351 1102
250
220
120
315
245

11
Fig. 12 shows the internal construction of the LC 109.
Fig. 12 Internal construction of LC 109
Fig. 13 shows the terminals listed under positions 2 and 3.
Fig. 13 Terminals
6.10.1 Key to the symbols in figs. 12 and 13
Fig. 14 shows the internal construction of the LCD 110.
Fig. 14 Internal construction of LCD 110
Fig. 15 shows the terminals listed under positions 2 and 3.
Fig. 15 Terminals
6.10.2 Key to the symbols in figs. 14 and 15
TM02 2347 4701TM02 2348 4101
Pos. Description
1 Module CU 211
2Terminal block for level inputs
(11-12, 22, 32, 42)
3
Terminal block with:
input for the motor thermal switch (T11-T21)
output for external alarm device for high-level alarm
(H1-H2)
output for external alarm device for common alarm
(GA1-GA2).
4Motor-protective circuit breaker (only if a motor-protective
circuit breaker has been installed).
5Terminal block for electricity supply
(a three-phase variant is illustrated above).
6Fuse holders for control circuit fuses
(1 to 3 depending on voltage/current variant).
8 Run capacitor (single-phase pumps only).
9 Cable entries
10 Earth bar ( PE)
TM02 4926 1802
TM02 2349 4101
Pos. Description
1 Module CU 214
2Terminal block for level inputs
(11-12, 22, 32, 42).
3
Terminal block with:
inputs for the motor thermal switches
(T11-T21, T12-T22)
output for external alarm device for high-level alarm
(H1-H2)
output for external alarm device for common alarm
(GA1-GA2).
4Motor-protective circuit breakers, pumps 1 and 2 (only if
motor-protective circuit breakers have been installed).
5Terminal block for electricity supply
(a three-phase variant is illustrated above).
6Fuse holders for control circuit fuses
(1 to 3 depending on voltage/current variant).
7 Isolating transformer
8 Run capacitor (single-phase pumps only)
9 Cable entries
10 Earth bar ( PE)
4
1
PE
5
6
4
9
10
32
4
4
7

12
6.11 Wiring diagram
Fig. 16 Wiring diagram, MSS
Fig. 17 Wiring diagram, MLD
TM03 3463 0406
Description Terminal number
Connection of level sensor.
See also section 6.6. 11-42
GA1GA2
LC 109
GA1GA2 11 12 22 32 42
T11 T21
M
T21 H1 H2
Ext.
51234
Max. 400 V
Max. 2 A
TM03 3464 0406
Description Terminal number
Connection of level sensor.
See also section 6.6. 11-42
GA1GA2
LCD 110
GA1GA2 11 12 22 3242
T11 T21
M
T21 H1 H2
Ext.
51234
T12 T21
M
T22
Max. 400 V
Max. 2 A

13
Fig. 18 Wiring diagrams
7. Start-up
When the Multilift lifting station has been installed correctly and
connected in accordance with local regulations and the controller
settings have been made, the lifting station can be started up.
Start-up must be carried out by authorized personnel.
Proceed as follows:
1. If, during installation of the lifting station, it has been neces-
sary to disconnect the LC 109 or LCD 110 from the station,
make sure that the terminals are connected as before the dis-
connection.
See also 6.11 Wiring diagram.
2. If a motor-protective circuit breaker has been installed, check
that the settings are correct.
3. MSS: Check that the correct inlet level, 180 or 250 mm, has
been selected, see "Switch 1" in 7.2 DIP switch setting.
4. Switch on the electricity supply.
Three-phase lifting stations only: If a wrong phase
sequence is indicated on the controller control panel, inter-
change two phases in the CEE plug.
5. Open all isolating valves.
6. Test-run the pump for maximum 1 minute by pushing the
ON-OFF-AUTO selector switch into position ON ( ), see sec-
tion 8.5.
7. Push the ON-OFF-AUTO selector switch into position AUTO
( ), see section 8.5.
8. Supply liquid (clean water) to the tank until the pump starts.
Stop the liquid supply and check that the tank is empty/the liq-
uid level has fallen to stop level.
If high heads are required, the stop delay can be changed, see
7.2 DIP switch setting.
Note: The drain screw on the side of the non-return valve is used
for emptying the discharge pipe between the non-return valve
and the isolating valve, if fitted.
During normal operation, the screw must be left untightened.
When the drain screw is tightened, see fig. 19, the non-return
valve will be forced open and the contents of the discharge pipe
will be emptied into the collecting tank.
Fig. 19 Drain screw
7.1 Direction of rotation
When the lifting station is delivered from factory, the direction of
rotation of the pumps is correct.
Three-phase lifting stations only: If the cables between control-
ler and pumps have been disconnected, point 1 in 7. Start-up
must be observed.
If a wrong phase sequence is indicated on the controller control
panel, interchange two phases in the CEE plug.
7.2 DIP switch setting
In the controllers LC 109 and LCD 110, the modules CU 211 and
CU 214 have a 10-pole DIP switch in the bottom right corner, see
fig. 21.
Note: During setting, the controller must be off circuit for at least
1 minute to ensure the correct configuration during start-up after
change of the DIP switch setting.
The DIP switch setting offers the following possibilities:
• setting of inlet level (switch 1)
• deselection of starting delay and automatic test run (switch 4)
• setting of stop delay (switches 5, 6 and 7)
• selection of automatic alarm resetting (switch 9)
• selection of automatic restarting (switch 10).
See explanations of the settings below.
Fig. 22 shows the factory setting of the DIP switch.
Single-phase connection Three-phase connection with/without
motor-protective circuit breaker
with motor-protective circuit breaker without motor-protective
circuit breaker
TM03 3465 0406 TM03 3470 0406 TM03 3471 0406
Z2
M
1~
N
U1U2
LC 109 / LCD 110
(T3)
(T2)
1~
L
LNPE
T21
T11
PE
U1U2Z2
M
1~
N
LC 109 / LCD 110
1~
L
LNPE
T21
T11
PE PE
L1 N
L2 L3
N
uvw
LC 109 / LCD 110
(T3)
(T1) (T2)
3 ~
L1 L2 L3 PE
T21
T11
Before starting any work on pumps used for pumping
liquids which might be hazardous to health, thorough
cleaning/venting of pumps, tank, etc. must be carried
out according to local regulations.
Before making any connections in the LC 109 or
LCD 110 or work on lifting stations, etc., it must be
ensured that the electricity supply has been switched
off and that it cannot be accidentally switched on.
TM02 2352 4101
Drain screw

14
8. LC 109 controller
8.1 Control panel
Fig. 20 Control panel, CU 211 module
Key to the symbols in fig. 20
8.2 Application
The LC 109 enables:
• control of one pump based on signals from the level sensor in
the tank
• deselection of automatic test run during long periods of inac-
tivity (every 24 hours)
• battery back-up in case of mains supply failure
• starting delay within the range from 0 to 255 sec. (random)
after returning from battery operation to mains operation
(resulting in an even mains load when several lifting stations
are started up at the same time; only in the case of battery
operation)
• selection of automatic alarm resetting
• selection of automatic restarting
• setting of stop delays matching the current operating condi-
tions
• indication of liquid level
• alarm indication of:
- inadmissibly high liquid level, which triggers a high-level
alarm
- too high motor temperature (temperature sensor)
- wrong phase sequence 1
- mains supply failure
- defective level sensor.
• As standard, the LC 109 controller have two alarm outputs
(NO contacts) for:
- common alarm and
- separate high-level alarm.
Common alarm and high-level alarm are signalled acoustically via
a built-in buzzer.
8.3 DIP switch
Fig. 21 CU 211 module with DIP switch
8.3.1 Factory-setting of DIP switch
The DIP switch is factory-set, as shown in fig. 22.
Fig. 22 Factory setting of DIP switch
Each individual switch (1 to 10) of the DIP switch can be set to
position OFF or ON.
Note: The DIP switch must not be set to other switch combina-
tions than those described in this section.
Set the switches 1 to 10 as follows:
•Switch1, inlet level:
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
• Switches 2and 3:
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
•Switch4, starting delay and automatic test run
(only in connection with battery backup):
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
TM01 6425 3902
Pos. Description
1Green indicator light, indicating starting delay (flashing)
and pump operation (permanently on).
2Red indicator light, indicating pump fault, flashing or per-
manently on, see section 8.7.
3Red indicator light, indicating wrong phase sequence
(three-phase pumps only).
4 Red indicator light, indicating common alarm.
5ON-OFF-AUTO selector switch, three positions, see sec-
tion 8.5.
7Reset button, push-button for manual resetting of alarm signals to external alarm devices and the built-in buzzer,
see section 8.5.
8, 9,
10
and
11
Four orange indicator lights, which are activated by the
pressure sensors in the tank.
In case of high-level alarm, the top indicator light is flash-
ing and the three other indicator lights are permanently on.
12 Green indicator light, indicating that the electricity supply
has been switched on.
12
CU 211
1
1
34
7
5
8
12
11
10
9
TM02 2483 3802
TM03 3654 0606
This setting determines the inlet level of the lifting station.
OFF corresponds to a 180 mm inlet level and ON corre-
sponds to a 250 mm inlet level.
Switches 2 and 3 have no function in connection with the
application, but this setting must be maintained.
At this setting, the start-up is delayed within the range
from 0 to 255 sec. (random) after the electricity supply has
been switched on when the liquid level is sufficiently high.
Automatic test run every 24 hours.
After the electricity has been switched on, the pump will
start immediately when the liquid level is sufficiently high.
No automatic test run.

15
•Switch5, 6and 7, stop delay:
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
•Switch8:
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
•Switch9, automatic alarm resetting:
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
•Switch10, automatic restarting:
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
8.4 Battery back-up functions
If a back-up battery for module CU 211 is installed, the following
functions will be carried out if the normal electricity supply to the
LC 109 fails (see also the illustrations below):
• The common alarm is active, the red indicator light is on –
cannot be reset!
•If the external alarm device for common alarm is supplied from
an external power source, this device will be active – cannot
be reset by means of the reset button!
• The built-in buzzer is activated – can be reset by means of the
reset button!
•If the liquid level rises above the level for high-level alarm, the
top orange indicator light will be flashing and the second
orange indicator light from the top will be permanently on.
•If the starting delay function and automatic test run were
selected (switch 4 of the DIP switch) (factory setting), the
start-up will be delayed after the electricity supply has been
switched on when the liquid level is sufficiently high, see
7.2 DIP switch setting.
The table below shows the situations which may occur if the nor-
mal electricity supply to the LC 109 fails and a back-up battery is
connected:
= the indicator light is off.
= the indicator light is on.
= the indicator light is flashing.
The stop delay is the time from the stop signal is given until the
pump is stopped.
The stop delay is adapted to the tank capacity and the pump type.
The setting should only be changed if the tank is not sufficiently
emptied in the application in question.
0 sec. 8 sec.
2 sec. 10 sec.
4 sec. 12 sec.
6 sec. 14 sec.
Switch 8 has no function in connection with the applica-
tion, but this setting must be maintained!
This setting ensures automatic resetting of alarm signals
to external alarm devices and the built-in buzzer. How-
ever, an alarm signal will only be reset if the cause of the
fault no longer exists.
At this setting, the alarm signal must be reset manually by
means of the reset button (the reset button is described in
8.5 Reset button and ON-OFF-AUTO selector switch).
This setting must not be changed. It ensures automatic
restarting of the motor after it has been cut out on
account of too high temperature.
Mains supply failure:
• The common alarm is active.
The red indicator light is on.
• The green indicator light (electricity
supply switched on) is off.
Mains supply failure and high-level alarm:
• The common alarm is active.
The red indicator light is on.
• The top orange indicator light is flash-
ing.
• The three other orange indicator lights
are on.
• The green indicator light (electricity
supply switched on) is off.
CU 211
1
CU 211
1

16
8.5 Reset button and ON-OFF-AUTO selector switch
8.6 Normal operating conditions
= the indicator light is off.
= the indicator light is on.
= the indicator light is flashing.
.
The reset button is a push-button for manual resetting of alarm signals to external alarm devices and the built-in buzzer
(i.e. not for resetting of the alarm memory as this is reset by means of the ON-OFF-AUTO selector switch, see position
OFF ( )).
Even if the fault condition still exists, the external alarm devices and the built-in buzzer will be reset when the reset button
is pressed.
The ON-OFF-AUTO selector switch has three different positions:
ON ( ), top position:
• The pump will start when the selector switch is pushed into this position (unless a motor-protective circuit breaker,
if any, has cut out the pump).
• If the thermal switch of the motor registers overtemperature, the pump will not be switched off.
Note: It is the user’s responsibility to decide how long the pump is to run with this fault indication. Over a long pe-
riod, the pump will be damaged!
OFF ( ), middle position:
• The pump cannot start when the selector switch has been set to this position.
• The alarm memory is reset by pushing the selector switch into position OFF ( ). The alarm memory is the light in-
dication of a fault condition which has disappeared. If a fault condition still exists when the selector switch is
pushed into position ON ( ) or AUTO ( ), the alarm indication will be repeated immediately.
AUTO ( ), bottom position:
• The pump is controlled by the input signals from the level sensor and the pump(s) according to the selected DIP
switch setting.
• Alarm signals will automatically be reset. Switch 9 of the DIP switch can, however, be set to manual resetting
which is carried out by means of the reset button, see 7.2 DIP switch setting.
• The pump will restart automatically when a given fault condition disappears.
• When the pump starts automatically after a fault condition which has disappeared, the indicator light will continue
to show the fault condition (alarm memory) and the indication can only be removed by resetting the alarm memory,
see position OFF ().
1
The liquid level in the collecting tank is lower than the starting level of the pump:
• Electricity supply switched on. The green indicator light is on.
The liquid level in the collecting tank is higher than the starting level of the pump:
• Starting delay of the pump (this only applies to starting after interruption of electricity supply and if a back-up
battery has been fitted). The green indicator light is flashing.
• The bottom orange indicator light is on.
• Electricity supply switched on. The green indicator light is on.
The liquid level in the collecting tank is higher than the starting level of the pump:
• The pump is running. The green indicator light is on.
• The bottom orange indicator light is on.
• Electricity supply switched on. The green indicator light is on.
CU 211
1
CU 211
1
CU 211
1

17
8.7 Alarm conditions
Common alarm activates:
• red indicator light
• built-in buzzer and
•external alarm device for common alarm.
High-level alarm activates:
common alarm (see above),
external alarm device for high-level alarm
• the top orange indicator light (flashing) and
• the other orange indicator lights (permanently on).
The table below shows examples of typical alarm conditions.
= the indicator light is off.
= the indicator light is on.
= the indicator light is flashing.
Wrong phase sequence (only three-phase variants):
•Thered indicator light for wrong phase sequence is on.
• The common alarm is active. The red indicator light is on.
• Electricity supply switched on. The green indicator light is on.
The pump cannot be started in this condition. Interchange two phases in the CEE plug.
The level sensor is dirty or defective:
•Thered indicator light for wrong phase sequence is on.
• The common alarm is active. The red indicator light is on.
During pumping, various combinations of orange indicator lights may be on. After pumping, the fault is indicated as
illustrated in the figure.
Applies only if a motor-protective circuit breaker (accessory) has been installed.
The motor-protective circuit breaker has cooled and has been reset manually after a cutout. The pump is running
again:
• The pump is running. The green indicator light is on.
•Thered indicator light for pump fault is on.
• The common alarm is active. The red indicator light is on.
• The bottom orange indicator light is on.
• Electricity supply switched on. The green indicator light is on.
This alarm indication can be reset by resetting the alarm memory, see ON-OFF-AUTO selector switch, section 8.5.
The motor thermal switch has cut out the pump. The motor has not yet cooled sufficiently:
•Thered indicator light for pump fault is flashing.
• The common alarm is active. The red indicator light is on.
• The bottom orange indicator light is on.
• Electricity supply switched on. The green indicator light is on.
The pump has cooled after the thermal switch has caused a cutout. The pump is running again:
• The pump is running. The green indicator light is on.
•Thered indicator light for pump fault is flashing.
• The common alarm is active. The red indicator light is on.
• The bottom orange indicator light is on.
• Electricity supply switched on. The green indicator light is on.
This alarm indication can be reset by resetting the alarm memory, see ON-OFF-AUTO selector switch, section 8.5.
High-level alarm. The pump is running:
• The pump is running. The green indicator light is on.
• The common alarm is active. The red indicator light is on.
• The top orange indicator light is flashing.
• The other orange indicator lights are on.
• Electricity supply switched on. The green indicator light is on.
There has been a high-level situation and the liquid level in the collecting tank is now lower than the starting level of
the pump:
• The common alarm is active. The red indicator light is on.
• The top orange indicator light is flashing.
• Electricity supply switched on. The green indicator light is on.
This alarm indication can be reset by resetting the alarm memory, see ON-OFF-AUTO selector switch, section 8.5.
The level sensor is dirty or defective or the quantity of liquid at the inlet is too big:
• The common alarm is active. The red indicator light is on.
• Electricity supply switched on. The green indicator light is on.
This alarm indication can be reset by resetting the alarm memory, see ON-OFF-AUTO selector switch, section 8.5.
CU 211
1
CU 211
1
CU 211
1
CU 211
1
CU 211
1
CU 211
1
CU 211
1
CU 211
1

18
9. LCD 110 controller
9.1 Control panel
Fig. 23 Control panel, CU 214 module
9.2 Application
The LCD 110 enables:
• control of two pumps based on level signals from the level
sensor
• automatic pump changeover (even distribution of operating
hours on both pumps)
• selection of automatic test run during long periods of inactivity
(every 24 hours)
• battery back-up in case of mains supply failure (accessory for
certain variants)
• starting delay within the range from 0 to 255 sec. (random)
• selection of automatic alarm resetting
• selection of automatic restarting
• setting of stop delays matching the current operating condi-
tions
• indication of liquid level
• alarm indication in case of:
• inadmissibly high liquid level
• overload (via motor-protective circuit breaker)
• overtemperature (via thermal switch in motor)
• wrong phase sequence.
As standard, the LCD 110 has one alarm output for common
alarm and one alarm output for separate high-level alarm.
Furthermore, the controller incorporates a buzzer.
9.3 DIP switch
The CU 214 module has a 10-pole DIP switch positioned in the
bottom right corner, see fig. 24.
Fig. 24 CU 214 module with DIP switch
9.3.1 Factory-setting of DIP switch
The DIP switch is factory-set, as shown in fig. 25.
Fig. 25 Factory setting of DIP switch
Factory-set operation has
• no automatic test run
• 15 sec. after-flow
• manual resetting of alarm
• automatic restarting.
9.3.2 DIP switch setting
Note: The DIP switch must not be set to other switch combina-
tions than those described in this section.
Note: During setting, the controller must always be off circuit for
at least 1 minute to ensure the correct configuration during
start-up after change of the DIP switch setting.
The DIP switch setting offers the following possibilities:
• selection of starting delay and automatic test run (switch 4)
• setting of stop delay (switches 5, 6 and 7)
• selection of automatic alarm resetting (switch 9)
• selection of automatic restarting (switch 10).
Each individual switch (1 to 10) of the DIP switch can be set to
position OFF or ON.
Set the switches 1 to 10 as follows:
• Switches 1, 2and 3, application type:
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
TM02 4643 1402
Pos. Description
1Green indicator light for pumps 1 and 2, indicating starting
delay (flashing) and pump operation (permanently on).
2Red indicator light for pumps 1 and 2, indicating pump
fault, flashing or permanently on, see section 9.7.
3 Red indicator light, indicating wrong phase sequence.
4 Red indicator light, indicating common alarm.
5ON-OFF-AUTO selector switch for pump 1, three posi-
tions, see section 9.5.
6ON-OFF-AUTO selector switch for pump 2, three posi-
tions, see section 9.5.
7Reset button, push-button for manual resetting of alarm signals to external alarm devices and the built-in buzzer,
see section 9.5.
8Orange indicator light, which is activated by the level sen-
sor for common stop.
9Orange indicator light, which is activated by the level sen-
sor for start of the first pump.
10 Orange indicator light, which is activated by the level sen-
sor for start of the next pump.
11 Orange indicator light, which is activated by the level sen- sor for high-level alarm.
In case of high-level alarm, the indicator light is flashing.
12 Green indicator light, indicating that the electricity supply
has been switched on.
21
1
2
1234
7
56
12
11
9
8
10
CU 214
TM03 3650 0606
TM03 3649 0606
This setting determines the application type.

19
•Switch4, starting delay and automatic test run
(only in the case of battery back-up):
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
•Switches5, 6and 7, stop delay:
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
•Switch8:
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
•Switch9, automatic alarm resetting:
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
•Switch10, automatic restarting:
When the DIP switch setting is changed, the controller must be
switched off for at least 1 minute!
9.4 Battery back-up functions
The backup battery is available as an accessory.
If a back-up battery for the CU 214 module is installed, the follow-
ing functions will be carried out if the normal electricity supply to
the LCD 110 fails (see also the illustrations below):
• The common alarm is active, the red indicator light is on –
cannot be reset!
•If the external alarm device for common alarm is supplied from
an external power source, this device will be active – cannot
be reset by means of the reset button!
• The built-in buzzer is activated – can be reset by means of the
reset button!
•If the liquid level rises above the level for high-level alarm, the
top orange indicator light will be flashing and the second
orange indicator light from the top will be permanently on.
•If the starting delay function and automatic test run were
selected (switch 4 of the DIP switch), the start-up will be
delayed after the electricity supply has been switched on when
the liquid level is sufficiently high, see 9.3.2 DIP switch setting.
The table below shows the situations which may occur if the nor-
mal electricity supply to the LCD 110 fails and a back-up battery
is connected:
= the indicator light is off.
= the indicator light is on.
= the indicator light is flashing.
At this setting, the start-up is delayed within the range
from 0 to 255 sec. (random) after the electricity supply has
been switched on, when the liquid level is sufficiently high.
Automatic test run every 24 hours.
After the electricity has been switched on, the pump will
start immediately when the liquid level is sufficiently high.
No automatic test run.
The stop delay is the time from the stop signal is given until the
pumps are stopped.
It must be ensured that the pumps are not running dry.
0 sec. 60 sec.
15 sec. 90 sec.
30 sec. 120 sec.
45 sec. 180 sec.
Switch 8 has no function in connection with the applica-
tion, but this setting must be maintained!
This setting ensures automatic resetting of alarm signals
to external alarm devices and the built-in buzzer. How-
ever, an alarm signal will only be reset if the cause of the
fault no longer exists.
At this setting, the alarm signal must be reset manually by
means of the reset button (the reset button is described in
9.5 Reset button and ON-OFF-AUTO selector switch).
This setting enables automatic restarting after the motor
thermal switch has cut out the pump. Restarting will not be
carried out until the motor has cooled to normal tempera-
ture.
At this setting, the pumps must be restarted manually after
the motor thermal switch has cut out the pump. To restart
the pump, push the ON-OFF-AUTO selector switch into
position OFF for a short period (the ON-OFF-AUTO selector
switch is described in 9.5 Reset button and
ON-OFF-AUTO selector switch).
Mains supply failure:
• The common alarm is active. The red
indicator light is on.
• The green indicator light (electricity
supply switched on) is off.
Mains supply failure and high-level alarm:
• The common alarm is active. The red
indicator light is on.
• The top orange indicator light is flash-
ing.
• The second orange indicator light from
the top is on.
• The green indicator light (electricity
supply switched on) is off.
1
2
2
1

20
9.5 Reset button and ON-OFF-AUTO selector switch
9.6 Normal operating conditions
The table below shows examples of typical alarm conditions.
Pumps 1 and 2 operate alternately. The examples show pump 2
as the first starting pump. = the indicator light is off.
= the indicator light is on.
= the indicator light is flashing.
The reset button is a push-button for manual resetting of alarm signals to external alarm devices and the built-in buzzer
(i.e. not for resetting of the alarm memory as this is reset by means of the ON-OFF-AUTO selector switch, see position
OFF ( )).
Even if the fault condition still exists, the external alarm devices and the built-in buzzer will be reset when the reset button
is pressed.
The ON-OFF-AUTO selector switch for each pump has three different positions:
ON ( ), top position:
• The pump will start when the selector switch is pushed into this position (unless the motor-protective circuit
breaker has cut out the pump!).
• If the thermal switch of the motor registers overtemperature, the pump will be switched off.
OFF ( ), middle position:
• The pump cannot start when the selector switch has been set to this position.
• The alarm memory is reset by pushing the selector switch into position OFF ( ). The alarm memory is the light in-
dication of a fault condition which has disappeared. If a fault condition still exists when the selector switch is
pushed into position ON ( ) or AUTO ( ), the alarm indication will be repeated immediately.
AUTO ( ), bottom position:
• The pump is controlled by the input signals from the level sensor and the pump according to the selected DIP
switch setting.
• Alarm signals will automatically be reset. Switch 9 of the DIP switch can, however, be set to manual resetting,
which is carried out by means of the reset button, see 9.3.2 DIP switch setting.
• The pump will restart automatically when a given fault condition disappears. However, this is dependent on the
setting of switch 10 of the DIP switch, see 9.3.2 DIP switch setting.
• When the pump starts automatically after a fault condition which has disappeared, the indicator light will continue
to show the fault condition (alarm memory) and the indication can only be removed by resetting the alarm memory,
see position OFF ().
21
The liquid level in the collecting tank is lower than the stop level of the pumps (a stop delay has been set, see sec-
tion 9.3.2):
• Electricity supply switched on. The green indicator light is on.
The liquid level in the collecting tank is higher than the starting level of the first pump:
• Starting delay of the pump. The green indicator light is flashing.
• The two bottom orange indicator lights are on.
• Electricity supply switched on. The green indicator light is on.
The liquid level in the collecting tank is higher than the starting level of the first pump:
• The pump is running. The green indicator light is on.
• The two bottom orange indicator lights are on.
• Electricity supply switched on. The green indicator light is on.
The liquid level in the collecting tank is higher than the starting level of the second pump:
• Starting delay of the pump. The green indicator light is flashing.
• The first pump is running. The green indicator light is on.
• The three bottom orange indicator lights are on.
• Electricity supply switched on. The green indicator light is on.
The liquid level in the collecting tank is higher than the starting level of the second pump:
• The pumps are running. The two green indicator lights are on.
• The three bottom orange indicator lights are on.
• Electricity supply switched on. The green indicator light is on.
1
2
1
2
1
2
1
2
1
2