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English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
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2.
3.
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9.
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
1. Symbols used in this document
Warning
If these safety instructions are not observed,
it may result in personal injury.
Warning
If these instructions are not observed, it may lead
to electric shock with consequent risk of serious
personal injury or death.
Warning
These instructions must be observed for
explosion-proof pumps. We recommend that you
also follow these instructions for standard
pumps.
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.
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2. Introduction
You can find these instructions in other languages by using the
QR code or link below.
Page
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grundfos.com/LCLCD115-manual
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2.1 Product description
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The LC, LCD 115 controller is designed for the control of one or
two pumps in wastewater and drainage systems.
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It automatically starts/stops pumps and generates alarms based
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on signals from an analog level sensor in the pump pit.
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The controller can be set to three modes:
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•
starting unit
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•
starting unit with alternation
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•
level converter.
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2.2 Features
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Control of one or two pumps based on analog level
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measurement
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indication of liquid level
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alarm indications:
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- high liquid level via level sensor
- high liquid level via float switch (optional)
- overload (via motor protection relay)
- overtemperature (via PTC resistance or thermal switch in
motor)
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buzzer alarm (optional)
•
automatic alarm resetting
•
automatic restarting after stop due to overtemperature.
2.3 Identification
Example
LC:
one-pump controller
LCD:
two-pump controller
115:
type designation
Phase voltage [V]
1:
single-phase
3:
three-phase
Maximum operating current per pump [A]
DOL:
direct on line
SS:
soft starter
40:
run capacitor
40/150:
run and starting capacitor
The controller type, voltage variant, etc. are stated on the
nameplate on the side of the controller cabinet.
2.4 Requirements
Level sensor
Type: 2-wire screened cable.
Output signal: 4-20 mA.
Sensor supply: 24 VDC (+ 5/- 15 %).
Maximum cable length: 30 m.
Pit
The liquid level of the pit must not exceed 10 m, which is the
maximum capacity of the sensor.
LC 115. 230.
1.
12. DOL
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