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English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
1.
2.
3.
4.
4.1
4.2
5.
5.1
5.2
5.3
5.4
5.5
6.
7.
7.1
7.2
7.3
7.4
8.
8.1
8.2
8.3
9.
10.
11.
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.
As the LC 221 controller is part of either a
Multilift, Unolift or Duolift system, there is no
separate EC declaration of conformity for LC 221.
Note
Please see declaration of conformity in the
installation and operating instructions for the
lifting station.
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 observed,
Caution
it may result in malfunction or damage to the
equipment.
Notes or instructions that make the job easier
Note
and ensure safe operation.
2. Scope of delivery
Grundfos LC 221 controllers can be ordered together with
wastewater lifting stations, such as Multilift, Unolift or Duolift.
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The controller is delivered with mains cable and appropriate plug.
An accessories bag containing the following items is also
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included:
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•
1 x installation and operating instructions
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•
1 x quick guide for controller menu.
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3. Transportation and storage
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For long periods of storage, the LC 221 controller must be
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protected against moisture and heat.
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Storage temperature, see chapter 10. Technical data.
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4. Product description
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LC 221 is a level controller designed for controlling and
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monitoring the Grundfos lifting stations, Multilift, Unolift and
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Duolift. The control is based on a signal received continuously
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from the piezoresistive level sensor.
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The level controller switches the pumps on and off according to
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the liquid level measured by the level sensor.
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An alarm will be indicated in case of high water level in the tank,
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pump failure, etc.
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Furthermore, the level controller has many more functions as
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described below.
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Fig. 1
LC 221 level controllers for one and two pumps
Fig. 2
LC 221 level controller, Y/D (star-delta) version
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