Page 1
LC A2
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
Page 2
English (GB) Installation and operating instructions
Caution
Note
English (GB)
Original installation and operating instructions
1. Symbols used in this document
CONTENTS
Page
1. Symbols used in this document
2. Product introduction
3. Applications
3.1 Construction
4. Installation
5. Examples of systems
6. Level switches
6.1 Float switch
6.2 Vertical level switch
7. Electrical connection
8. Technical data
9. Disposal
Warning
Prior to installation, read these installation
and operating instructions. Installation and
operation must comply with local
regulations and accepted codes of good
practice.
Warning
The use of this product requires
experience with and knowledge of the
product.
Persons with reduced physical, sensory or
mental capabilities must not use this
product, unless they are under supervision
or have been instructed in the use of the
product by a person responsible for their
safety.
Children must not use or play with this
product.
2
2
2
2
3
3
3
The safety instructions in the manuals for the lifting
3
station and the appliances connected must also be
3
observed.
4
2. Product introduction
5
The LC A2 alarm device is designed for stopping
5
washing machines or dishwashers to prevent
flooding.
3. Applications
The LC A2 is intended for the monitoring of pumping
stations and small lifting stations.
A level switch, installed in the appliance to be
monitored, will be activated for example in case of
overflow due to pump failure or clogging. The unit
will sound alarm and activate an integrated relay
contact to switch off the power supply to the washing
machine connected. The function, which is preset,
prevents flooding by stopping the washing machine
pump.
3.1 Construction
The LC A2 consists of a plug housing with integrated
socket. The socket can be used as power supply for
other appliances and for switching on/off appliances
in case of fault.
The unit is mains-powered by means of a
short-circuit-proof safety isolating transformer. The
voltage for the control relay (normally open contact)
is below 24 V.
The LC A2 has a potential-free signal output.
Warning
If these safety instructions are not
observed, it may result in personal injury.
If these safety instructions are not
observed, it may result in malfunction or
damage to the equipment.
Notes or instructions that make the job
easier and ensure safe operation.
2
Page 3
4. Installation
Caution
Caution
Warning
The protective earth (PE) of the power
outlet must be connected to the protective
earth of the product. The plug must have
the same PE connection system as the
power outlet.
Warning
The installation must be fitted with a
residual current device (RCD) with a
tripping current less than 30 mA.
Warning
The product must be connected to an
external main switch with a minimum
contact gap of 3 mm (0.12 inch) in all
poles.
Warning
Unplug the unit before opening it.
1. Install the level switch. See examples on page 6.
2. Remove the four screws at the back of the LC A2
and lift off the cover carefully.
3. Disconnect wires, if any, to the buzzer.
4. Remove the cover.
5. Lead the level switch cable through a suitable
cable gland and connect the conductors to the
terminal block.
6. Tighten the cable gland by hand.
7. Follow the same procedure for the alarm relay.
8. Connect the buzzer by means of the connector.
9. Fit the cover.
Make sure that wires are not pinched.
10. Fit and tighten the four screws.
6. Level switches
6.1 Float switch
Float switch, type MS2, for installation in tanks and
pits. It is especially suitable for Liftaway B, Liftaway
C 100, Unilift and PUST.
Fig. 1 Float switch
91427145: Float switch with 5 m cable.
91427146: Float switch with 10 m cable.
91427147: Float switch with 20 m cable.
6.2 Vertical level switch
Level switch for installation in the cover of small
lifting stations and tanks. It is especially suitable for
Sololift2 C-3, Sololift+ C-3 and Liftaway C.
Fig. 2 Vertical level switch
97775337: Vertical float switch with 10 m cable.
English (GB)
TM01 6982 3999TM05 0630 1311
5. Examples of systems
See page 6.
Observe limitations, if any, in the use of
pumps or lifting stations.
3
Page 4
7. Electrical connection
Ext. out
Control relay
Alarm relay
Cont.
Control relay Alarm relay Control relay Alarm relay
Control relay Alarm relay
English (GB)
Figure 3 shows the position of the terminal blocks for
the control relay (connection of level switch) and the
alarm relay.
• NC (normally closed contact):
The socket will be switched off in case of fault.
This is the default setting for stop of a washing
machine.
Fig. 3 Alarm relay
The socket function can be set at the terminal block.
See fig. 4.
• Cont.:
The socket is used as a feed-through socket.
• NO (normally open contact):
The socket will be switched on in case of fault.
Fig. 5 Connection of several LC A2 units
It is also possible to lock the LC A2 to disable
automatic restarting. In case of alarm, the LC A2
must be pulled out of the socket. See example in fig.
6.
TM05 0515 1311
Fig. 4 Terminal block, socket function
By connecting several LC A2 units, a corresponding
number of appliances can be switched on/off by
means of one control relay (level switch). See
example in fig. 5.
TM05 0516 1311
TM05 0517 1311
Fig. 6 Locked LC A2
TM05 0518 1311
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8. Technical data
Enclosure
Flame-retardant polystyrene according to UL 94 V-0
or 94 V-2, impact-resistant, bicolour, with integrated
socket (can be switched on or off), two cable glands
with cable relief, 2 x M12 x 1.5.
Power supply
230 V, 50 Hz, short-circuit-proof safety isolating
transformer.
No-load power consumption: 0.2 VA.
Power consumption in case of alarm: approx. 2 VA.
Input
Potential-free normally open contact, min. 24 V, 75
mA.
Output
Potential-free contact, 3 A, 250 VAC or 3 A, 30 VDC,
short-term 5 A.
In case of alarm, the socket can be switched on/off
(15 A / 250 VAC, 1-pole). It can also be used as
feed-through socket.
An acoustic alarm signal is possible by means of a
piezoelectric buzzer with a tone sequence signal of
97 dB / 1 m.
Ambient temperature
0-40 °C.
Dimensions
140 x 60 x 90 mm.
9. Disposal
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
English (GB)
The crossed-out wheelie bin symbol on
a product means that it must be
disposed of separately from household
waste. When a product marked with this
symbol reaches its end of life, take it to a
waste disposal authorities. The separate collection
and recycling of such products will help protect the
environment and human health.
collection point designated by the local
5
Page 6
Appendix 1
Double
socket
LC A2
Double
socket
LC A2
Appendix
Fig. 1 Installation with Liftaway B
TM05 0513 1311
Fig. 2 Installation with Liftaway C
6
TM05 0514 1311
Page 7
Fig. 3 Installation with Sololift2 C-3
LC A2
Double
socket
+
Appendix
TM05 0550 1211
Fig. 4 Vertical level switch in Sololift2 C-3
TM05 0634 1311
7
Page 8
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Argentina
Bombas GRUNDFOS de Argentina S.A.
Ruta Panamericana km. 37.500 Centro
Industrial Garin
1619 Garín Pcia. de B.A.
Phone: +54-3327 414 444
Telefax: +54-3327 45 3190
Australia
GRUNDFOS Pumps Pty. Ltd.
P.O. Box 2040
Regency Park
South Australia 5942
Phone: +61-8-8461-4611
Telefax: +61-8-8340 0155
Austria
GRUNDFOS Pumpen Vertrieb
Ges.m.b.H.
Grundfosstraße 2
A-5082 Grödig/Salzburg
Tel.: +43-6246-883-0
Telefax: +43-6246-883-30
Belgium
N.V. GRUNDFOS Bellux S.A.
Boomsesteenweg 81-83
B-2630 Aartselaar
Tél.: +32-3-870 7300
Télécopie: +32-3-870 7301
Belarus
Представительство ГРУНДФОС в
Минске
220125, Минск
ул. Шафарнянская, 11, оф. 56, БЦ
«Порт»
Тел.: +7 (375 17) 286 39 72/73
Факс: +7 (375 17) 286 39 71
E-mail: minsk@grundfos.com
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GRUNDFOS Sarajevo
Zmaja od Bosne 7-7A,
BH-71000 Sarajevo
Phone: +387 33 592 480
Telefax: +387 33 590 465
www.ba.grundfos.com
e-mail: grundfos@bih.net.ba
Brazil
BOMBAS GRUNDFOS DO BRASIL
Av. Humberto de Alencar Castelo
Branco, 630
CEP 09850 - 300
São Bernardo do Campo - SP
Phone: +55-11 4393 5533
Telefax: +55-11 4343 5015
Bulgaria
Grundfos Bulgaria EOOD
Slatina District
Iztochna Tangenta street no. 100
BG - 1592 Sofia
Tel. +359 2 49 22 200
Fax. +359 2 49 22 201
email: bulgaria@grundfos.bg
Canada
GRUNDFOS Canada Inc.
2941 Brighton Road
Oakville, Ontario
L6H 6C9
Phone: +1-905 829 9533
Telefax: +1-905 829 9512
China
GRUNDFOS Pumps (Shanghai) Co. Ltd.
10F The Hub, No. 33 Suhong Road
Minhang District
Shanghai 201106
PRC
Phone: +86 21 612 252 22
Telefax: +86 21 612 253 33
COLOMBIA
GRUNDFOS Colombia S.A.S.
Km 1.5 vía Siberia-Cota Conj. Potrero
Chico,
Parque Empresarial Arcos de Cota Bod.
1A.
Cota, Cundinamarca
Phone: +57(1)-2913444
Telefax: +57(1)-8764586
Croatia
GRUNDFOS CROATIA d.o.o.
Buzinski prilaz 38, Buzin
HR-10010 Zagreb
Phone: +385 1 6595 400
Telefax: +385 1 6595 499
www.hr.grundfos.com
GRUNDFOS Sales Czechia and
Slovakia s.r.o.
Čajkovského 21
779 00 Olomouc
Phone: +420-585-716 111
Denmark
GRUNDFOS DK A/S
Martin Bachs Vej 3
DK-8850 Bjerringbro
Tlf.: +45-87 50 50 50
Telefax: +45-87 50 51 51
E-mail: info_GDK@grundfos.com
www.grundfos.com/DK
Estonia
GRUNDFOS Pumps Eesti OÜ
Peterburi tee 92G
11415 Tallinn
Tel: + 372 606 1690
Fax: + 372 606 1691
Finland
OY GRUNDFOS Pumput AB
Trukkikuja 1
FI-01360 Vantaa
Phone: +358-(0) 207 889 500
France
Pompes GRUNDFOS Distribution S.A.
Parc d’Activités de Chesnes
57, rue de Malacombe
F-38290 St. Quentin Fallavier (Lyon)
Tél.: +33-4 74 82 15 15
Télécopie: +33-4 74 94 10 51
Germany
GRUNDFOS GMBH
Schlüterstr. 33
40699 Erkrath
Tel.: +49-(0) 211 929 69-0
Telefax: +49-(0) 211 929 69-3799
e-mail: infoservice@grundfos.de
Service in Deutschland:
e-mail: kundendienst@grundfos.de
Greece
GRUNDFOS Hellas A.E.B.E.
20th km. Athinon-Markopoulou Av.
P.O. Box 71
GR-19002 Peania
Phone: +0030-210-66 83 400
Telefax: +0030-210-66 46 273
Hong Kong
GRUNDFOS Pumps (Hong Kong) Ltd.
Unit 1, Ground floor
Siu Wai Industrial Centre
29-33 Wing Hong Street &
68 King Lam Street, Cheung Sha Wan
Kowloon
Phone: +852-27861706 / 27861741
Telefax: +852-27858664
Hungary
GRUNDFOS Hungária Kft.
Tópark u. 8
H-2045 Törökbálint,
Phone: +36-23 511 110
Telefax: +36-23 511 111
India
GRUNDFOS Pumps India Private
Limited
118 Old Mahabalipuram Road
Thoraipakkam
Chennai 600 096
Phone: +91-44 2496 6800
Indonesia
PT. GRUNDFOS POMPA
Graha Intirub Lt. 2 & 3
Jln. Cililitan Besar No.454. Makasar,
Jakarta Timur
ID-Jakarta 13650
Phone: +62 21-469-51900
Telefax: +62 21-460 6910 / 460 6901
Ireland
GRUNDFOS (Ireland) Ltd.
Unit A, Merrywell Business Park
Ballymount Road Lower
Dublin 12
Phone: +353-1-4089 800
Telefax: +353-1-4089 830
Italy
GRUNDFOS Pompe Italia S.r.l.
Via Gran Sasso 4
I-20060 Truccazzano (Milano)
Tel.: +39-02-95838112
Telefax: +39-02-95309290 / 95838461
Japan
GRUNDFOS Pumps K.K.
1-2-3, Shin-Miyakoda, Kita-ku,
Hamamatsu
431-2103 Japan
Phone: +81 53 428 4760
Telefax: +81 53 428 5005
Korea
GRUNDFOS Pumps Korea Ltd.
6th Floor, Aju Building 679-5
Yeoksam-dong, Kangnam-ku, 135-916
Seoul, Korea
Phone: +82-2-5317 600
Telefax: +82-2-5633 725
Latvia
SIA GRUNDFOS Pumps Latvia
Deglava biznesa centrs
Augusta Deglava ielā 60, LV-1035, Rīga,
Tālr.: + 371 714 9640, 7 149 641
Fakss: + 371 914 9646
Lithuania
GRUNDFOS Pumps UAB
Smolensko g. 6
LT-03201 Vilnius
Tel: + 370 52 395 430
Fax: + 370 52 395 431
Page 9
Malaysia
GRUNDFOS Pumps Sdn. Bhd.
7 Jalan Peguam U1/25
Glenmarie Industrial Park
40150 Shah Alam
Selangor
Phone: +60-3-5569 2922
Telefax: +60-3-5569 2866
Mexico
Bombas GRUNDFOS de México S.A. de
C.V.
Boulevard TLC No. 15
Parque Industrial Stiva Aeropuerto
Apodaca, N.L. 66600
Phone: +52-81-8144 4000
Telefax: +52-81-8144 4010
Netherlands
GRUNDFOS Netherlands
Veluwezoom 35
1326 AE Almere
Postbus 22015
1302 CA ALMERE
Tel.: +31-88-478 6336
Telefax: +31-88-478 6332
E-mail: info_gnl@grundfos.com
New Zealand
GRUNDFOS Pumps NZ Ltd.
17 Beatrice Tinsley Crescent
North Harbour Industrial Estate
Albany, Auckland
Phone: +64-9-415 3240
Telefax: +64-9-415 3250
Norway
GRUNDFOS Pumper A/S
Strømsveien 344
Postboks 235, Leirdal
N-1011 Oslo
Tlf.: +47-22 90 47 00
Telefax: +47-22 32 21 50
Poland
GRUNDFOS Pompy Sp. z o.o.
ul. Klonowa 23
Baranowo k. Poznania
PL-62-081 Przeźmierowo
Tel: (+48-61) 650 13 00
Fax: (+48-61) 650 13 50
Portugal
Bombas GRUNDFOS Portugal, S.A.
Rua Calvet de Magalhães, 241
Apartado 1079
P-2770-153 Paço de Arcos
Tel.: +351-21-440 76 00
Telefax: +351-21-440 76 90
Romania
GRUNDFOS Pompe România SRL
Bd. Biruintei, nr 103
Pantelimon county Ilfov
Phone: +40 21 200 4100
Telefax: +40 21 200 4101
E-mail: romania@grundfos.ro
Russia
ООО Грундф ос Россия
ул. Школьная, 39-41
Москва, RU-109544, Russia
Тел. (+7) 495 564-88-00 (495)
737-30-00
Факс (+7) 495 564 8811
E-mail grundfos.moscow@grundfos.com
Serbia
Grundfos Srbija d.o.o.
Omladinskih brigada 90b
11070 Novi Beograd
Phone: +381 11 2258 740
Telefax: +381 11 2281 769
www.rs.grundfos.com
Singapore
GRUNDFOS (Singapore) Pte. Ltd.
25 Jalan Tukang
Singapore 619264
Phone: +65-6681 9688
Telefax: +65-6681 9689
Slovakia
GRUNDFOS s.r.o.
Prievozská 4D
821 09 BRATISLAVA
Phona: +421 2 5020 1426
sk.grundfos.com
Slovenia
GRUNDFOS LJUBLJANA, d.o.o.
Leskoškova 9e, 1122 Ljubljana
Phone: +386 (0) 1 568 06 10
Telefax: +386 (0)1 568 06 19
E-mail: tehnika-si@grundfos.com
South Africa
Grundfos (PTY) Ltd.
16 Lascelles Drive, Meadowbrook Estate
1609 Germiston, Johannesburg
Tel.: (+27) 10 248 6000
Fax: (+27) 10 248 6002
E-mail: lgradidge@grundfos.com
Spain
Bombas GRUNDFOS España S.A.
Camino de la Fuentecilla, s/n
E-28110 Algete (Madrid)
Tel.: +34-91-848 8800
Telefax: +34-91-628 0465
Sweden
GRUNDFOS AB
Box 333 (Lunnagårdsgatan 6)
431 24 Mölndal
Tel.: +46 31 332 23 000
Telefax: +46 31 331 94 60
Switzerland
GRUNDFOS Pumpen AG
Bruggacherstrasse 10
CH-8117 Fällanden/ZH
Tel.: +41-44-806 8111
Telefax: +41-44-806 8115
Tai wan
GRUNDFOS Pumps (Taiwan) Ltd.
7 Floor, 219 Min-Chuan Road
Taichung, Taiwan, R.O.C.
Phone: +886-4-2305 0868
Telefax: +886-4-2305 0878
Thailand
GRUNDFOS (Thailand) Ltd.
92 Chaloem Phrakiat Rama 9 Road,
Dokmai, Pravej, Bangkok 10250
Phone: +66-2-725 8999
Telefax: +66-2-725 8998
Turkey
GRUNDFOS POMPA San. ve Tic. Ltd.
Sti.
Gebze Organize Sanayi Bölgesi
Ihsan dede Caddesi,
2. yol 200. Sokak No. 204
41490 Gebze/ Kocaeli
Phone: +90 - 262-679 7979
Telefax: +90 - 262-679 7905
E-mail: satis@grundfos.com
Ukraine
Бізнес Центр Європа
Столичне шосе, 103
м. Київ, 03131, Україна
Телефон : (+38 044) 237 04 00
Факс.: (+38 044) 237 04 01
E-mail: ukraine@grundfos.com
United Arab Emirates
GRUNDFOS Gulf Distribution
P.O. Box 16768
Jebel Ali Free Zone
Dubai
Phone: +971 4 8815 166
Telefax: +971 4 8815 136
United Kingdom
GRUNDFOS Pumps Ltd.
Grovebury Road
Leighton Buzzard/Beds. LU7 4TL
Phone: +44-1525-850000
Telefax: +44-1525-850011
U.S.A.
GRUNDFOS Pumps Corporation
9300 Loiret Blvd.
Lenexa, Kansas 66219
Phone: +1-913-227-3400
Telefax: +1-913-227-3500
Uzbekistan
Grundfos Tashkent, Uzbekistan The Representative Office of Grundfos Kazakhstan
in Uzbekistan
38a, Oybek street, Tashkent
Телефон: (+998) 71 150 3290 / 71 150
3291
Факс: (+998) 71 150 3292
Addresses Revised 15.01.2019
Grundfos companies
Page 10
97816231 0119
ECM: 1250836
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