Lutz-Jesco C 7520 User manual

Dosing
Conveying
Control
Liquids
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Original operating instructions
© Lutz-Jesco GmbH 2021
BA-22404-02-V03
Chlorine changeover unit
C 7520
Operating instructions
Read the operating manual!
The user is responsible for installation and operation related mistakes!
22700003_1
PL-Bild Elektrischer Chlorgasumschalter C 7520
für Überdrucksysteme

Table of Contents 3
© Lutz-Jesco GmbH 2021
Subject to technical changes.
210527
BA-22404-02-V03
Chlorine changeover unit C 7520 Operating instructions
Table of Contents
1 Notes for the Reader ..........................................................4
1.1 General non-discrimination......................................................4
1.2 Explanation of the signal words ................................................4
1.3 Explanation of the warning signs ..............................................4
1.4 Identification of warnings.........................................................4
1.5 Identification of action instructions ...........................................4
2 Safety .................................................................................5
2.1 General warnings.....................................................................5
2.2 Information about chlorine .......................................................5
2.3 Hazards due to non-compliance with the safety instructions .....5
2.4 Working in a safety-conscious manner .....................................6
2.5 Personal protective equipment.................................................6
2.6 Personnel qualification.............................................................6
2.7 Personnel tasks .......................................................................6
3 Intended use ......................................................................7
3.1 Notes on product warranty .......................................................7
3.2 Intended purpose.....................................................................7
3.3 Prohibited dosing media...........................................................7
4 Product description ...........................................................8
4.1 Scope of delivery .....................................................................8
4.2 Design and function .................................................................8
4.3 Rating plate .............................................................................9
5 Technical data..................................................................10
6 Dimensions ......................................................................11
7 Installation .......................................................................12
7.1 Installation location................................................................12
7.2 Installing the device ...............................................................12
7.3 Hydraulic installation..............................................................12
7.4 Electric installation.................................................................13
7.5 Completing the installation.....................................................16
7.6 Installation example...............................................................17
8 Control..............................................................................18
8.1 Controls.................................................................................18
8.2 Operating modes ...................................................................18
9 Commissioning ................................................................20
9.1 Inspecting the pressure system..............................................20
9.2 Turning on the device .............................................................21
9.3 Adjusting the switching contact..............................................21
10 Operation..........................................................................22
10.1 Tank change ........................................................................22
10.2 Shutting down in an emergency ...........................................22
10.3 Optical check.......................................................................22
11 Shutdown.........................................................................23
11.1 Short-term shutdown...........................................................23
11.2 Long-term shutdown ...........................................................23
11.3 Disposal of old equipment....................................................23
12 Maintenance ....................................................................24
12.1 Maintenance intervals..........................................................24
12.2 Maintenance accessories.....................................................24
12.3 Preparing the system for maintenance .................................24
12.4 Maintenance on the ball valve ..............................................24
12.5 Cleaning the pressure gauge................................................26
12.6 Functional control ................................................................27
12.7 Finishing maintenance.........................................................27
13 Troubleshooting ...............................................................28
14 Spare parts.......................................................................29
15 EU Declaration of Conformity...........................................30
16 Declaration of no objection..............................................31
17 Warranty claim.................................................................32
18 Index.................................................................................33

Notes for the Reader
4© Lutz-Jesco GmbH 2021
BA-22404-02-V03
Chlorine changeover unit C 7520 Operating instructions
1 Notes for the Reader
This operating manual contains information and behaviour rules for the
safe and designated operation of the device.
Observe the following principles:
nRead the entire operating manual prior to starting-up the device.
nEnsure that everyone who works with or on the device has read the
operating manual and follows it.
nMaintain the operating manual throughout the service life of the de-
vice.
nPass the operating manual on to any subsequent owner of the device.
1.1 General non-discrimination
In this operating manual, only the male gender is used where grammar
allows gender allocation. The purpose of this is to make the text easy to
read. Men and women are always referred to equally. We would like to
ask female readers for understanding of this text simplification.
1.2 Explanation of the signal words
Different signal words in combination with warning signs are used in this
operating manual. Signal words illustrate the gravity of possible injuries if
the risk is ignored:
Signal word Meaning
DANGER Refers to imminent danger. Ignoring this sign
may lead to death or the most serious injuries.
WARNING! Refers to a potentially hazardous situation.
Failure to follow this instruction may lead to
death or severe injuries.
CAUTION! Refers to a potentially hazardous situation.
Failure to follow this instruction may lead to
minor injury or damage to property.
PLEASE NOTE Refers to a danger which, if ignored, may lead to
risk to the machine and its function.
Tab. 1: Explanation of the signal words
1.3 Explanation of the warning signs
Warning signs represent the type and source of a danger:
Warning sign Type of danger
Danger to life from chlorine poisoning
Danger to life due to electric shock
General danger zone
Danger of damage to machine or functional
influences
Tab. 2: Explanation of the warning signs
1.4 Identification of warnings
Warnings are intended to help you recognise risks and avoid negative
consequences.
This is how warnings are identified:
Warning sign SIGNAL WORD
Description of danger
Consequences if ignored
ðThe arrow signals a safety precaution to be taken to eliminate the
danger.
1.5 Identification of action instructions
This is how pre-conditions for action are identified:
üPre-condition for action which must be met before taking action.
@A resource such as a tool or auxiliary materials required to perform
the operating instructions.
This is how instructions for action are identified:
èSeparate step with no follow-up action.
1. First step in a series of steps.
2. Second step in a series of steps.
4Result of the above action.
üAction completed, aim achieved.

Safety 5
© Lutz-Jesco GmbH 2021
Subject to technical changes.
210527
BA-22404-02-V03
Chlorine changeover unit C 7520 Operating instructions
2 Safety
2.1 General warnings
The following warnings are intended to help you eliminate the dangers
that can arise while handling the device. Risk prevention measures al-
ways apply regardless of any specific action.
Safety instructions warning against risks arising from specific activities
or situations can be found in the respective sub-chapters.
DANGER
Danger to life from chlorine poisoning!
Chlorine is poisonous. In severe cases, breathing in chlorine may lead
to death. It irritates the eyes, the respiratory system and the skin.
ðUse sufficient personal protective equipment.
ðWhen carrying out any work on the system, use a respirator mask
with a Type B gas filter that complies with EN 14387.
ðAlways comply with the accident prevention regulations that apply
at the place of use.
ðGet rid of leaks without delay. You must get rid of even very minor
leaks without delay. Together with the humidity, chlorine forms hy-
drochloric acid and corrosion results in rapidly increasing leakage.
ðUse only chlorine-resistant seals.
ðOnly use seals once. Reusing them leads to leaks.
DANGER
Danger to life from missing safety device.
Chlorinators without gas warning devices are an increased safety risk,
since it is not possible to detect escaping chlorine gas in good time or
at all.
ðInstall a gas warning device.
WARNING!
Increased risk of accidents due to insufficient qualifica-
tion of personnel!
Chlorinators and their accessories must only be installed, operated and
maintained by personnel with sufficient qualifications. Insufficient qual-
ification will increase the risk of accidents.
ðEnsure that all action is taken only by personnel with sufficient and
corresponding qualifications.
ðPrevent access to the system for unauthorised persons.
PLEASE NOTE
Damage to the plant due to the formation of hydrochloric
acid
Chlorine gas is highly hygroscopic.This means that humidity enters the
system at any open connection on devices or pipes, which results in the
formation of hydrochloric acid and contamination. thus inevitably caus-
ing damage to the units.
ðKeep all connections (including in the vacuum system and on all
devices not currently in use) closed at all times.
2.2 Information about chlorine
Chlorine is a hazardous substance. The chemical element chlorine is a
greenish-yellow, toxic gas with a pungent odour, which can be detected
in the air at concentrations below 1 ppm (= 1 ml/m³).
Chlorine is 2.7 times heavier than air and accumulates at ground level.
Chlorine is extremely toxic for water organisms. The reason for the toxici-
ty of chlorine is its extraordinary reactivity. It reacts with animal and veg-
etable tissue and thus destroys it.
Air with a chlorine gas content of 0.5 – 1% leads to a quick death in
mammals and humans, as it attacks the respiratory tract and the pulmo-
nary alveolus (formation of hydrogen chloride or hydrochloride acid).
PLEASE NOTE
Faults due to insufficient chlorine quality
Impurities in the chlorine gas form deposits in devices and valves and
can attack the components chemically. This can lead to malfunctions.
ðOnly use technically pure chlorine that meets the following require-
ments:
- Mass content of chlorine at least 99.5%
- Water content max. 20 mg/kg
Chlorine that complies with EN 937 meets these requirements.
2.3 Hazards due to non-compliance with the safety
instructions
Failure to follow the safety instructions may endanger not only persons,
but also the environment and the device.
The specific consequences can be:
nFailure of important functions of the device and of the corresponding
system
nFailure of required maintenance and repair methods
nDanger to persons
nDanger to the environment caused by substances leaking from the
system