Lutz JESCO C 7523 User manual

Dosing
Conveying
Control
Liquids
Gases
Systems
M
Original operating instructions
© Lutz-Jesco GmbH 2015
BA-24721-02-V01
Chlorine gas changeover unit
C 7523
Operating instructions
Read the operating manual!
The user is responsible for installation and operation related mistakes!

3
© Lutz-Jesco GmbH 2015
Subject to technical changes.
150413
BA-24721-02-V01
Chlorine gas changeover unit C 7523 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 Instruction for action identification ...........................................5
2 Safety .................................................................................6
2.1 General warnings.....................................................................6
2.2 Information about chlorine .......................................................6
2.3 Hazards due to non-compliance with the safety instructions .....6
2.4 Working in a safety-conscious manner .....................................7
2.5 Personal protective equipment.................................................7
2.6 Personnel qualification.............................................................7
3 Intended use ......................................................................9
3.1 Notes on product warranty .......................................................9
3.2 Intended purpose.....................................................................9
3.3 Device revision ........................................................................9
3.4 Prohibited dosing media...........................................................9
4 Product description .........................................................10
4.1 Scope of delivery ...................................................................10
4.2 Design and function ...............................................................10
4.3 Rating plate ...........................................................................10
5 Technical data..................................................................11
6 Dimensions ......................................................................12
7 Installation .......................................................................13
7.1 Installation location................................................................13
7.2 Installing the device ...............................................................13
7.3 Hydraulic installations............................................................14
7.4 Electrical installation..............................................................16
7.5 Completing the installation.....................................................19
7.6 Installation examples .............................................................20
8 Control..............................................................................22
8.1 Controls.................................................................................22
8.2 Operating modi......................................................................22
9 Start-up............................................................................24
9.1 Check the vacuum system .....................................................24
9.2 Turning on the device .............................................................24
9.3 Adjusting the switch point .....................................................25
10 Operation..........................................................................26
10.1 Tank change ........................................................................26
10.2 Shutting down in an emergency ...........................................26
10.3 Inspection intervals..............................................................26
11 Shutdown.........................................................................27
11.1 Short-term shutdown...........................................................27
11.2 Long-term shutdown ...........................................................27
11.3 Disposal of old equipment....................................................27
12 Maintenance ....................................................................28
12.1 Maintenance intervals..........................................................28
12.2 Maintenance accessories.....................................................28
12.3 Preparing the system for maintenance .................................28
12.4 Minor maintenance:.............................................................29
12.5 Cleaning the contact gauge..................................................29
12.6 Maintenance on the ball valve ..............................................30
12.7 Functional control ................................................................30
12.8 Finishing maintenance.........................................................30
13 Troubleshooting ...............................................................31
14 Spare parts.......................................................................32
14.1 Spare parts..........................................................................32
14.2 Maintenance sets ................................................................34
15 EC Declaration of Conformity...........................................35
16 Declaration of no objection..............................................36
17 Warranty claim................................................................. 37

Notes for the Reader
General non-discrimination
4© Lutz-Jesco GmbH 2015
BA-24721-02-V01
Chlorine gas changeover unit C 7523 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 instructions prior to inaugurating the device.
nensure that everyone who works with or on the chlorine gas filter has
read the operating instructions and follows it.
nmaintain the operating instructions throughout the service life of the
device.
npass the operating instructions 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.
Note Refers to a danger which, if ignored, may lead to
risk to the machine and its function.
Table 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
Table 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.

Notes for the Reader
Instruction for action identification 5
© Lutz-Jesco GmbH 2015
Subject to technical changes.
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Chlorine gas changeover unit C 7523 Operating instructions
1.5 Instruction for action identification
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
General warnings
6© Lutz-Jesco GmbH 2015
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Chlorine gas changeover unit C 7523 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
always 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
hydrochloric 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 chlorine poisoning!
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
qualification 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.
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 causing 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 2.5 times heavier than air and accumulates at ground level.
Chlorine is extremely toxic for water organisms. The reason for the
toxicity of chlorine is its extraordinary reactivity. It reacts with animal and
vegetable tissue and thus destroys it.
Air with a chlorine gas content of 0.51% leads to a quick death in
mammals and humans, as it attacks the respiratory tract and the
pulmonary alveolus (formation of hydrogen chloride or hydrochloride
acid).
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
requirements:
- 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

Safety
Working in a safety-conscious manner 7
© Lutz-Jesco GmbH 2015
Subject to technical changes.
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Chlorine gas changeover unit C 7523 Operating instructions
system.
2.4 Working in a safety-conscious manner
Besides the safety instructions specified in this operating manual, further
safety rules apply and must be followed:
naccident prevention regulations
nsafety and operating provisions,
nsafety regulations on handling hazardous substances,
nenvironmental protection provisions,
napplicable standards and legislation.
2.5 Personal protective equipment
Based on the degree of risk posed by the dosing medium and the type of
work you are carrying out, you must use corresponding protective
equipment. Read the Accident Prevention Regulations and the Safety
Data Sheets to the dosing media find out what protective equipment you
need.
As a minimum, the following protective equipment is recommended:
Protective mask protective clothing
Protective gloves safety shoes
Corresponding protective equipment must be used during these tasks:
ncommissioning,
nall work on gas-bearing sections of the plant
nchanging the chlorine gas containers,
nshutdown,
nmaintenance work,
ndisposal.
DANGER!
Danger to life from chlorine poisoning!
If chlorine gas escapes, a filter mask is ineffective, since it is not a
self-contained breathing apparatus.
ðIf chlorine gas escapes, wear a Type 2 self-contained breathing
apparatus that complies with EN 137.
2.6 Personnel qualification
Any personnel who work on the device must have appropriate special
knowledge and skills.
Anybody who works on the device must meet the conditions below:
nattendance at all the training courses offered by the owner,
npersonal suitability for the respective activity,
nsufficient qualification for the respective activity,
ntraining in how to handle the device,
nknowledge of safety equipment and the way this equipment functions,
nknowledge of this operating manual, particularly of safety instructions
and sections relevant for the activity,
nknowledge of fundamental regulations regarding health and safety
and accident prevention.
All persons must generally have the following minimum qualification:
ntraining as specialists to carry out work on the device unsupervised,
nsufficient training that they can work on the device under the
supervision and guidance of a trained specialist.
These operating instructions differentiate between these user groups:
2.6.1 Specialist staff
Thanks to their professional training, knowledge, experience and
knowledge of the relevant specifications, specialist staff are able to
perform the job allocated to them and recognise and/or eliminate any
possible dangers by themselves.
2.6.2 Trained electricians
Due to their professional training, knowledge and experience as well as
knowledge of specific standards and provisions, trained electricians are
able to do the electrical work assigned to them and to recognise and
avoid any potential dangers by themselves.
They are specially trained for their specific working environment and are
familiar with relevant standards and provisions.
They must comply with the legally binding regulations on accident
prevention.
2.6.3 Trained persons
Trained persons have received training from the operator about the tasks
they are to perform and about the dangers stemming from improper
behaviour.
Trained persons have attended all trainings offered by the operator.

Safety
Personnel qualification
8© Lutz-Jesco GmbH 2015
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Chlorine gas changeover unit C 7523 Operating instructions
2.6.4 Personnel tasks
In the table below you can check what qualifications are the pre-condi-
tion for the respective tasks. Only people with appropriate qualifications
are allowed to perform these tasks!
Qualification Activities
Specialist staff nTransportation
nAssembly
nHydraulic installations
nCommissioning
nTaking out of operation
nFault rectification
nMaintenance
nRepairs
nDisposal
Trained electricians nElectrical installation
nRectifying electrical faults
nElectrical repairs
Trained persons nStorage
nControl
Table 3: Personnel qualification

Intended use
Notes on product warranty 9
© Lutz-Jesco GmbH 2015
Subject to technical changes.
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Chlorine gas changeover unit C 7523 Operating instructions
3 Intended use
3.1 Notes on product warranty
Any non-designated use of the device can impair its function and the
protection provided. This leads to invalidation of any warranty claims!
Please note that liability is on the side of the user in the following cases:
nthe device is operated in a manner which is not consistent with these
operating instructions, particularly safety instructions, handling
instructions and the section "Intended Use".
nInformation on usage and environment (see section 5 „Technical
data“ on page 11) is not adhered to.
nif people operate the device who are not adequately qualified to carry
out their respective activities.
nNo original spare parts or accessories of Lutz-Jesco GmbH are used.
nUnauthorised changes are made to the device.
nThe user uses different dosing media than those indicated in the
order.
nMaintenance and inspection intervals are not adhered to as required
or not adhered to at all.
nThe device is commissioned before it or the corresponding system
has been correctly and completely installed.
nSafety equipment has been bridged, removed or made inoperative in
any other way.
3.2 Intended purpose
The C7523 changeover unit is intended exclusively for use with chlorine
gas dosing systems in accordance with the vacuum procedure in
accordance with DIN 19606. It serves to switch between two vacuum
supply batteries.
It may only be used with technically pure chlorine with a minimum mass
content of 99.5%
3.3 Device revision
This operating manual applies to the following devices:
Device Month / year of manufacture
Chlorine gas changeover unit
C 7523
03/2015 onwards
Table 4: Device revision
The production date is indicated on the rating plate.
3.4 Prohibited dosing media
The device must not be used for the following media and substances:
nAny gases except chlorine gas,
nMedia with a pressure not less than the atmospheric pressure.
nChlorine of insufficient quality

Product description
Scope of delivery
10 © Lutz-Jesco GmbH 2015
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Chlorine gas changeover unit C 7523 Operating instructions
4 Product description
4.1 Scope of delivery
Please compare the delivery note with the scope of delivery.The
following items are part of the scope of delivery:
nMotor ball valve
nContact gauge
nVarious hydraulic connections (optional)
nWall holder
nControl with power plug
nPlastic wall panel (optional)
n• Installation material for wall fixing
nOperating instructions
4.2 Design and function
Chlorine gas dosing systems in a water treatment system must be
permanently ready for operation so that the water can be sufficiently
disinfected at any point. This explains the fitting of the systems with two
supply batteries - one side in operation, the other on stand-by.The
vacuum chlorine changeover valve effects automatic switching between
the two cylinders or drum batteries.
Typical installations are shown on the example installations (from page
20).
Fig. 1:
M
Structure of the device
If the power supply from the operation battery ebbs, the vacuum
generated by the injector will become stronger. The control arecognises
the chlorine shortage using the contact gauge band activates the motor
con the three-way ball valve d.
The control signals the operating state with coloured LEDs in the flow
chart. (See section 8 „Control“ on page 22) The most important
operating signals are available for remote indication as relay contacts.
The "residue discharge" function enables the consumption of residue
from incompletely-emptied tanks of a total vacuum battery.Working in
set intervals, the changeover unit then switches to the battery registered
as empty and removes the residue.
Manual changeover can be triggered by the push of a button. Mechanical
changeover by hand is possible given a power outage.
4.3 Rating plate
The rating plate contains information on the safety and functional method
of the product. The rating plate must be kept legible for the duration of the
service life of the product.
Material: PVC/FPM
230/400 V, 50/60 Hz IP65
-1 ... 0 bar
max. 220 kg/h
Lutz-Jesco GmbH 30900 Wedemark
Am Bostelberge 19 Germany
XX/XXXX
S/N: XXXXXXXXXXP/N:
Made in Germany
*102A12345678*
*12345678012345*
Umschalter C 7523 - 80K
4
211
10
9
1
76
5
Fig. 2: Rating plate C 7523
No. Description
1Product name
2Part number
3Materials coming into contact with media
4Voltage supply
5Permitted operating pressure
6Maximum flow
7IP protection class
8WEEE marking
9Label showing conformity with applicable European
directives
10 Month/year of manufacture
11 Serial number
Table 5: Rating plate
3
1
4
2
8
3

Technical data
Rating plate 11
© Lutz-Jesco GmbH 2015
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Chlorine gas changeover unit C 7523 Operating instructions
5 Technical data
Description Value
Throughput up to 80 kg/h Cl2 (see tab. 7)
Operating pressure -1…0 bar
Contact gauge Ø63 mm, class 2.5, -1…0 bar
Setting range of the switching point on the contact gauge -0.9…-0.1 bar
Changeover time approx. 22 s
Material in contact with the media PVC / FPM / Silver /
coated brass
Further materials Coated steel, PP, ABS
Voltage supply 115…230 V, 50…60 Hz
Power consumption Normal mode max. 0,3 A / max. 20 VA
Switch-on current max. 17.5 A (peak)
Load capacity of the relay max. 3 A / 250 VAC
Weight without mounting plate approx. 5 kg
with mounting plate approx. 7 kg
Protection class IP 65
Ambient temperature 0 – 55 °C, avoid direct sunlight
Air humidity max. 95%, non condensing
Table 6: Technical data
Product Hydraulic connections Max. flow rate
C 7523-4K hose 8/12 mm 4 kg/h Cl2
C7523-10K hose 12/16 mm 10 kg/h Cl2
C7523-40K Pipe DN25/Ø32 40 kg/h Cl2
C7523-80K Pipe DN32/Ø40 80 kg/h Cl2
Table 7: Maximum flow

Dimensions
12 © Lutz-Jesco GmbH 2015
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Chlorine gas changeover unit C 7523 Operating instructions
6 Dimensions
All dimensions in mm
Fig. 3:
470
200
152,5
490
152,5
440
420
ø 9
~ 150
74
10
Dimensioned drawing C 7523 on mounting plate
Fig. 4:
130
85
152,5 260
ø 6,5
130
231
125
64
~ 140
125
Dimensioned drawing C 7523 as assembly kit
Ready-to-use cables,
Length 2m

Installation 13
© Lutz-Jesco GmbH 2015
Subject to technical changes.
150413
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Chlorine gas changeover unit C 7523 Operating instructions
7 Installation
DANGER!
Danger to life from chlorine poisoning!
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
qualification 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.
Note
Damage to the system due to incorrect installation
The failure to observe installation instructions (e.g. use of unsuitable
tools, incorrect torque) can damage the system parts.
ðUse suitable tools.
ðNote the specified torque.
7.1 Installation location
The changeover unit is fitted in the room of the chlorine supply.
The room must fulfil the following requirements:
nsecured against access by unauthorised persons,
nprotected against weather conditions,
nfrost-free,
npermissible ambient temperature adhered to (see Section 5
"Technical data" on page 11)
nroom of sufficient size to allow trouble-free assembly as well as
inspection and maintenance of the device at all times,
nan electrical connection is given
nthe room must comply with the locally valid prescriptions
7.2 Installing the device
The device must be installed perpendicularly to the wall surface in a way
that makes it easily accessible to the operator.The control should be
mounted at c. eye-level.
Precondition for action:
üA flat wall
üThe mounting material is suitable for the wall.
Resources required:
@Water level
@Drill
@2 open-end spanners SW13
Perform the following working steps:
1. Hold the device against the wall and align it horizontally. The
installation position is specified on page 20.
2. Mark the mounting point on the wall.
3. Drill in the marked holes and insert the rawlplug.
4. Screw in the stair bolts ainto the rawlplug until the wooden thread
seals with the wall surface.
5. Place a nut band washer con every screw.
6. Slide the wall panel don the stair bolts.
7. Place a washer eand a cap nut con every screw.
8. Insert the nuts (b + f) in such a way that the wall panel is held
level and without tension.
9. Tighten the nuts.
üThe device is fitted on the wall.
Fig. 5: Fitting the wall panel
1 2 3 465

Installation
Hydraulic installations
14 © Lutz-Jesco GmbH 2015
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Chlorine gas changeover unit C 7523 Operating instructions
7.3 Hydraulic installations
PVC-U pipes or PE hoses are used as conduits. If the line is to supply
multiple consumers, the line should be calculated for the total of the
consumption volume.
The following nominal widths are recommended for the vacuum line
(pressure loss max. 25 bar, calculated at 0.9 bar (a) with 4x90° angles):
Mass flow of
chlorine
Length of the vacuum line between the vacuum regulator and the dosing device
5 m 10 m 20 m 30 m 50 m 100 m
1 kg/hr DN 8 DN 8 DN 8 DN 8 DN 8 DN 12
2 kg/hr DN 8 DN 8 DN 8 DN 12 DN 12 DN 12
4 kg/hr DN 8 DN 12 DN 12 DN 12 DN 12 DN 15
10 kg/hr DN 12 DN 12 DN 15 DN 15 DN 20 DN 20
15 kg/hr DN 12 DN 15 DN 20 DN 20 DN 20 DN 25
25 kg/hr DN15 DN 20 DN 20 DN 25 DN 25 DN 32
40 kg/hr DN 20 DN 25 DN 25 DN 25 DN 32 DN 32
60 kg/hr DN 25 DN 25 DN 32 DN 32 DN 32 DN 40
80 kg/hr DN 32 DN 32 DN 32 DN 32 DN 40 DN 50
Table 8: Max. capacity
Where necessary, a large distance can be installed in a large nominal
width and a connection in the nominal width of the device can be selected
for shorter sections shortly before and after the device.
Fig. 6:
M
M
L
A
L 1
L
B
L
C
L
2
L
D
Long vacuum line
Position Meaning
aVacuum regulator
bVacuum changeover unit
cDosing device
LA-LDLines connected to the device
each with c. 0.5m in the connection nominal width
L1,L2Large distances in a larger nominal width
The sum L1+L2may not exceed the length as specified in table 8
Table 9: Long vacuum line
12
3

Installation
Hydraulic installations 15
© Lutz-Jesco GmbH 2015
Subject to technical changes.
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Chlorine gas changeover unit C 7523 Operating instructions
The volume to be removed from a supply battery is limited by the number
of pressure tanks connected. To prevent the unnecessary connection of
too many pressure tanks, in the majority of cases, the supply battery is
designed for normal operation. Such installations are fitted with a bypass
valve for higher volumes required at short notice (e.g. a shock chlorina-
tion). It is thus possible to extract from both supply batteries simultane-
ously.
Fig. 7: Installation with bypass valves
If the dosing system is also to be operated whilst maintenance is
performed on the changeover unit, 5 manual valves are required in the
pipe line.
Fig. 8:
A
AA
B
B
Installation with 5 service valves
Check valve In normal operation During service
A Open Closed
B Closed Manual switching
Table 10: Function of the service valves
7.3.1 Establish the hose connection
Precondition for action:
üThe device is fitted on the wall.
üThe transport protection on the connection has been removed.
Resources required:
@sharp knife
Fig. 9: Establish the hose connection
Perform the following working steps:
1. Cut the hose aat right angles.
2. Slide the union nut bonto the hose.
3. Slide the hose end onto the cone of the hose connection c.
4. Tighten the union nut by hand.
5. Fix the hose to the wall.
üHose connected fitted.
3 1 2

Installation
Electrical installation
16 © Lutz-Jesco GmbH 2015
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Chlorine gas changeover unit C 7523 Operating instructions
7.3.2 Make the PVC seal connection.
Precondition for action:
üThe device is fitted on the wall.
üThe vacuum line is fixed with sufficient pipe clamps and meets the
connection in an un-tensioned state.
üAll parts are clean and dry.
üThe transport protection on the connection has been removed.
Resources required:
@Pipe cutter
@File or chamfer tool
@PVC adhesive and cleaning agent
@Non-fuzzing paper towels
Perform the following working steps:
1. Cut the PVC pipe at right angles. Make a chamfer on the pipe exterior
(c. 3mmx20°).
2. Clean the pipe and the bushing with the cleaning agent recommend-
ed by the manufacturer of the adhesive.
3. Glue the pipe in the connection. Follow the instructions on the PVC
adhesive.
Fig. 10: Make the PVC seal connection
4. Mount the connection on the device. Ensure that the O-ring is fitted.
5. Tighten the union nut by hand.
6. Allow the bond to harden for at least 3 hours prior to the leak test.
üPVC seal connection made.
7.4 Electrical installation
DANGER!
Mortal danger from electric shock!
Improperly installed or damaged components in the electronics
installation can cause injury.
ðEnsure that all work on the electrical installation is performed by a
qualified electrician.
ðEnsure that all work on the electrical installation is performed in a
de-energised state.
ðEnsure that the power supply is secured with a fault current
protective circuit.
ðReplace damaged cables or components without delay.
Open the control housing
Resources required:
@Flat-bladed screwdriver, size 3
Perform the following working steps:
1. Hold the screwdriver in the right-hand clearance on the front of the
housing.
2. Move the screwdriver grip towards the lid of the housing until the
hinge part disconnects from the adjustment lock.
3. Pivot the housing lid to the left.
üHousing opened.
Close the control housing
Perform the following working steps:
1. Pivot the housing lid towards the housing floor.
2. Pivot the hinge part towards the lid until it snaps in audibly.
3. Press against the hinge part with your hand until it locks audibly in
place.
üHousing closed.

Installation
Electrical installation 17
© Lutz-Jesco GmbH 2015
Subject to technical changes.
150413
BA-24721-02-V01
Chlorine gas changeover unit C 7523 Operating instructions
Terminal plan
Fig. 11: Control circuit board
Position Description
AConnector for the ribbon cable
BSwitch SW1/SW2
CMicrofuse 3.15 A (T)
DReserve fuse
Table 11: Elements of the circuit board
Switch Function Switch
downwards
Switch
upwards
SW1 Residue
discharge
OFF
(delivery state)
ON
SW2 Service switch Normal mode
(delivery state)
Diagnosis
(only for the
factory
customer
services dept.)
Table 12: Functions of the switch SW1/SW2
A B C D

Installation
Electrical installation
18 © Lutz-Jesco GmbH 2015
BA-24721-02-V01
Chlorine gas changeover unit C 7523 Operating instructions
Terminal Function
1 L Left-hand rotation phase
Voltage output to the motor ball valve
2 L Right-hand rotation phase
3 PE protective conductor
4 N neutral conductor
5 Left
Position feedback from the motor ball valve6 com
7 Right
8 +
Input for the contact gauge
9 -
10
Relay output operation left (NO max. 3A/250VAC)
11
12
Relay output operation left (NO max. 3A/250VAC)
13
14
Relay output left battery empty (NO max. 3A/250VAC)
15
16
Relay output right battery empty (NO max. 3A/250VAC)
17
18 NO
Relay output fault (max. 3A/250VAC)
active if both side are empty or fault on the motor
19 com
20 NC
21 N neutral conductor
Mains input
115-230 VAC
22 PE protective conductor
23 L phase
Table 13: Terminal connection

Installation
Completing the installation 19
© Lutz-Jesco GmbH 2015
Subject to technical changes.
150413
BA-24721-02-V01
Chlorine gas changeover unit C 7523 Operating instructions
In its delivery state, the motor of the ball valve is connected in accordance
with the following plan.
Fig. 12:
1 2
3
2
3
1
BK
BN
GY
GNYE
BK GY
BN
Motor connection
Position Description
AControl circuit board
BLarge plug on the motor
CSmall plug on the motor
Table 14: Motor connection
7.5 Completing the installation
The cable screw connections must be tightened after assembly in order
to ensure the IP protection class of the installation.All union nuts on the
screw connections of the piping are tightened by hand.
A
C
B

Installation
Installation examples
20 © Lutz-Jesco GmbH 2015
BA-24721-02-V01
Chlorine gas changeover unit C 7523 Operating instructions
7.6 Installation examples
7.6.1 Installation with a vacuum manifold
Fig. 13: Installation with a vacuum manifold
Position Description Position Description
1Chlorine cylinder 11 Motive water set
2Vacuum regulator 12 Injector with non-return valve
3Vacuum manifold 13 Vacuum breaker
4Safety blowoff valve 14 Chlorine solution injection nozzle
5Activated carbon cartridge 15 Gas warning device
6Vacuum changeover unit with 2 bypass valves 16 Horn
7Safety shutoff valve 17 Strobe
8Flow meter 18 Gas sensor
9Control valve 19 Sprinkler system
10 Motive water pump
Table 15: Designation of components
1
15
17 16
8
9
1211
13
4
6
5
10
14
7
23
18
19