GESTRA LRG 16-4 Installation instructions

Original Installation &
Operating Manual
850700-00
Conductivity Electrode
LRG 16-4
EN (USA)
English

2LRG 16-4 - USA - Installation & Operating Manual - 850700-00
Contents
Content of this Manual......................................................................................................................... 4
Scope of supply, product package....................................................................................................... 4
How to use this Manual........................................................................................................................ 5
Illustrations and symbols used............................................................................................................ 5
Hazard symbols in this Manual............................................................................................................ 5
Types of warning .................................................................................................................................. 6
Specialist terms, abbreviations ........................................................................................................... 7
Usage for the intended purpose........................................................................................................... 8
Applicable directives and standards.............................................................................................. 8
Improper use ........................................................................................................................................ 8
Basic safety information ...................................................................................................................... 9
Required personnel qualifications..................................................................................................... 10
Notes on product liability................................................................................................................... 10
Function .............................................................................................................................................. 11
Technical data .................................................................................................................................... 12
Rating plate, identification................................................................................................................. 12
Overall view ........................................................................................................................................ 13
Dimensions ......................................................................................................................................... 14
Preparing for installation ................................................................................................................... 15
Installation.......................................................................................................................................... 16
Installing the LRG 16-4 .................................................................................................................. 17
Installation examples with dimensions............................................................................................. 18
Electrical connection.......................................................................................................................... 19
LRG 16-4 with four-pole connector ................................................................................................ 19
Connecting a conductivity electrode............................................................................................... 20
Bringing into service .......................................................................................................................... 20
Assigning the four-pole connector of the LRG 16-4 ........................................................................ 20
Fault indications and troubleshooting............................................................................................... 21
Indications, diagnosis and corrective action ................................................................................... 21

3LRG 16-4 - USA - Installation & Operating Manual - 850700-00
Contents
Maintenance ....................................................................................................................................... 22
Cleaning the measuring electrode.................................................................................................. 22
Taking out of service.......................................................................................................................... 23
Disposal .............................................................................................................................................. 24
Returning decontaminated equipment.............................................................................................. 24
UL components................................................................................................................................... 24

4LRG 16-4 - USA - Installation & Operating Manual - 850700-00
Content of this Manual
Product:
■ Conductivity Electrode LRG 16-4
First edition:
BAN 850700-00/08-2021cm
© Copyright
All rights reserved. Any misuse, particularly reproduction and dissemination to third parties, is not
permitted. The General Terms & Conditions of GESTRA AG apply.
Scope of supply, product package
LRG 16-4
1 conductivity electrode LRG 16-4
1 Installation & Operating Manual

5LRG 16-4 - USA - Installation & Operating Manual - 850700-00
How to use this Manual
This Installation & Operating Manual describes the correct use of the LRG 16-4 conductivity
electrode. It applies to persons who integrate this equipment in control systems, install, bring into
service, operate, maintain and dispose of this equipment. Anyone carrying out the above-
mentioned activities must have read this Installation & Operating Manual and understood its
contents.
■ Read this Manual in full and follow all instructions.
■ Please also read the instructions for use of any accessories.
■ The Installation & Operating Manual is part of the product package. Keep it in an easily
accessible location.
Availability of this Installation & Operating Manual
■ Make sure this Installation & Operating Manual is always available to the operator.
■ If you pass on or sell the equipment to a third party, please also hand over the Installation &
Read the relevant
Installation & Operating Manual
Hazard symbols in this Manual
Danger zone, dangerous situation
Operating Manual.
Illustrations and symbols used
1. Action to be taken
2.
■ Lists
◆ Bullet points in lists
A Keys to illustrations
Additional
information

6LRG 16-4 - USA - Installation & Operating Manual - 850700-00
Types of warning
DANGER
Warning of a dangerous situation that results in death or serious injury.
WARNING
Warning of a dangerous situation that may possibly result in death or serious injury.
CAUTION
Warning of a situation that may result in minor or moderate injury.
ATTENTION
Warning of a situation that results in damage to property or the environment.

7LRG 16-4 - USA - Installation & Operating Manual - 850700-00
Specialist terms, abbreviations
Here, we explain some abbreviations, specialist terms, etc., which are used in this Manual.
NRGT .. / NRR.. / NRS.. / URS .. / URB .. / SRL .. / etc.
Equipment and type designations of GESTRA AG.
SELV
Safety Extra Low Voltage
Operating point (of the plant)
The operating point describes the operating parameters within which a plant or boiler is operated
in its nominal range. In a steam boiler, for example, these parameters would be output, pressure,
and temperature.
The design data may be a lot more stringent, however.
A boiler that is operated at 145psi (10bar) and 356°F (180°C) may be designed to withstand a
pressure of 870psi (60bar) and a temperature of 527°F (275°C), for example, which is therefore
not necessarily its operating point.

8LRG 16-4 - USA - Installation & Operating Manual - 850700-00
Improper use
There is a danger of death due to explosion if the equipment is used in potentially
explosive atmospheres.
Do not use the equipment in potentially explosive atmospheres.
Do not bring any equipment into service that does not have its own specific rating
plate.
The rating plate indicates the technical features of the equipment.
Usage for the intended purpose
The LRG 16-4 conductivity electrode may only be used in conjunction with LRS 1-.. conductivity
switches or LRR 1-.. conductivity controllers for measuring conductivity in liquid conductive media.
The LRG 16-4 conductivity electrode can be used as a conductivity limiter or blowdown controller
in steam boilers in combination with the following equipment:
Conductivity switch LRS 1-50
Conductivity controller LRR 1-50
Conductivity controller LRR 1-52
To ensure perfect function, pay attention to the recommendations of the ABMA & ASME regarding
boiler water limits.
The equipment may only be used within the admissible pressure and temperature ratings.
Applicable directives and standards
The equipment has been tested and approved for use in the scope governed by the following
directives and standards:
Standards:
■ UL 60730-1 and CAN/CSA E60730-1
General Requirements for Automatic Electrical Controls

9LRG 16-4 - USA - Installation & Operating Manual - 850700-00
Danger to life from scalding! Do not remove the conductivity electrode under pres-
sure. Steam or hot water can spurt forcefully out of the equipment.
■ Only remove the conductivity electrode at 0psi (0bar) boiler pressure.
Risk of severe burns! Do not perform work on a conductivity electrode that is still
hot. The conductivity electrode gets very hot during operation.
■ Allow the conductivity electrode to cool down.
■ Always wait for the conductivity electrode to cool before performing any installation
and maintenance work.
There is a risk of electric shock during work on electrical systems.
■ Always switch off the voltage to the plant before performing connection work.
■ Check that the plant is not carrying live voltage before commencing work.
Danger to life! Hot steam or hot water can suddenly escape from a faulty LRG 16-4
conductivity electrode.
Shocks and impacts during transport or installation can result in damage to or leaks in
the conductivity electrode, causing pressurized hot steam or hot water to escape through
the pressure relief hole.
■ To prevent damage during transport and installation, do not expose the electrode
rod to major shocks or impacts.
■ Before and after installation, check that the conductivity electrode is undamaged.
■ When bringing the conductivity electrode into service, check that it is leak-tight.
Attempts to repair the equipment will cause the plant to become unsafe.
■ The LRG 16-4 conductivity electrode may only be repaired by the manufacturer,
GESTRA AG.
■ Only replace faulty equipment with identical equipment from GESTRA AG.
Basic safety information

10 LRG 16-4 - USA - Installation & Operating Manual - 850700-00
Required personnel qualifications
Activity Personnel
Integration in control system Specialist staff Plant designer
Installation/
electrical connection/
bringing into service
Specialist staff
The equipment may only be installed, wired
and brought into service by qualified and
competent staff.
Operation Boiler service technician Staff trained by the plant operator.
Maintenance work Specialist staff
Fitting and maintenance work may only be
performed by authorized staff who have
undergone specific training.
Refits Specialist staff Persons trained by the plant operator to work
with pressure and temperature.
Notes on product liability
The manufacturer cannot accept any liability for damages resulting from improper use of the
equipment.