Symbols Used In This Document; Product Introduction; Installation And Operating Instructions - Grundfos LC A2 Manual Del Usuario

English (GB) Installation and operating instructions
CONTENTS
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.
1. Symbols used in this document
Warning
If these safety instructions are not
observed, it may result in personal
injury.
If these safety instructions are not
Caution
observed, it may result in malfunction
or damage to the equipment.
Notes or instructions that make the job
Note
easier and ensure safe operation.
The safety instructions in the manuals for the lifting
station and the appliances connected must also be
observed.
2. Product introduction
Page The LC A2 alarm device is designed for stopping
washing machines or dishwashers to prevent
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flooding.
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3. Applications
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The LC A2 is intended for the monitoring of pumping
stations and small lifting stations.
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A level switch, installed in the appliance to be
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monitored, will be activated for example in case of
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overflow due to pump failure or clogging. The unit
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will sound alarm and activate an integrated relay
8 contact to switch off the power supply to the washing
machine connected. The function, which is preset,
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prevents flooding by stopping the washing machine
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pump.
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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.
4. Installation
Warning
Unplug the unit before opening it.
1. Install the level switch. See examples on
page 84.
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.
Caution
Make sure that wires are not pinched.
10. Fit and tighten the four screws.
5. Examples of systems
See page 84.
Observe limitations, if any, in the use of
Caution
pumps or lifting stations.
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