ProMinent ProMaqua Bello Zon CDEa 45 User manual

Chlorine Dioxide Systems
Bello Zon® Type CDEa
Operating instructions
Original operating instructions (2006/42/EC)Part no. 984883 BA BEZ 043 01/14 EN
Please carefully read these operating instructions before use. · Do not discard.
The operator shall be liable for any damage caused by installation or operating errors.
The latest version of the operating instructions are available on our homepage.

Read the following supplementary information in its entirety!
Should you already know this information, you will benefit more
from referring to the operating instructions.
The following are highlighted separately in the document:
nEnumerated lists
- refer to... References
Operating guidelines
ðResults
„User interface text“
[Keys]
Information
This provides important information relating to the
correct operation of the unit or is intended to make
your work easier.
Safety notes
Safety notes are identified by pictograms - see Safety Chapter.
This document includes notes and quotes from German guidelines
relating to the system operator's scope of responsibility. This infor‐
mation does not discharge the operator from his responsibility as
an operator and is intended only to remind him or make him aware
of specific problem areas. This information does not lay claim to
being complete, nor applicable to every country and every type of
application, nor to being unconditionally up-to-date.
Supplementary information
Fig. 1: Please read!
Notes for the System Operator
Supplemental directives
2

Table of contents
1Product identification CDEa.................................................. 6
2 About this system.................................................................. 7
3 Safety chapter....................................................................... 8
4 Storage and Transport........................................................ 14
5 Requirements relating to the installation location............... 15
6 Assembly............................................................................ 16
7 Installation........................................................................... 19
7.1 Installation, hydraulic.................................................. 19
7.1.1 Bypass line.............................................................. 21
7.1.2 Safety equipment bypass line.................................. 22
7.1.3 Flushing equipment with vacuum relief valve
(accessory).............................................................. 24
7.1.4 Back pressure valve (accessory)............................. 25
7.1.5 Flow generator bypass line...................................... 25
7.1.6 Point of injection (accessory)................................... 25
7.1.7 Protective filter (accessory)..................................... 26
7.1.8 Chlorine dioxide detection kit (accessory)............... 26
7.1.9 Acid and chlorite suction lances / suction assem‐
blies (accessory)...................................................... 26
7.2 Installation, electrical.................................................. 27
7.2.1 Connecting the level switch..................................... 28
7.2.2 Wiring the system's control box............................... 28
7.2.3 Installing an emergency stop switch........................ 30
7.2.4 Preparing the mains connection.............................. 30
8 System overview ................................................................ 31
9 Functional description......................................................... 32
9.1 Chemical principle of the systems.............................. 32
9.2 Function principle of the systems............................... 32
9.3 Safety equipment........................................................ 33
9.4 Control elements......................................................... 34
10 Set up.................................................................................. 35
10.1 Calibrate pumps (CALIB menu)................................ 36
10.2 "Manual" operating mode......................................... 37
10.3 "Contact" operating mode......................................... 38
10.4 "Analog" operating mode.......................................... 39
11 Start up............................................................................... 40
11.1 Installation - final steps............................................. 41
11.2 Adjusting the system................................................. 41
11.2.1 "Manual" control mode (via the Pause contact)..... 41
11.2.2 "Contact conc" control mode (via a water meter).. 41
11.2.3 "Analog" control mode (via 0/4-20 mA signal)....... 42
11.3 Starting up the system.............................................. 42
11.3.1 Deactivating Flow Control...................................... 42
11.3.2 Deactivating the bypass monitor............................ 42
11.3.3 Bleeding pumps..................................................... 42
11.3.4 Filling the reactor................................................... 43
11.3.5 Checking for leaks................................................. 43
11.3.6 Setting the Flow Control dosing monitors.............. 43
Table of contents
3

11.3.7 Calibrating pumps.................................................. 44
11.3.8 Final start up.......................................................... 44
11.4 Testing the safety equipment.................................... 45
11.5 Installation of the chemical canisters........................ 45
11.6 Checking ClO2 production........................................ 46
12 Operation............................................................................ 47
12.1 Replacing chemical canisters................................... 47
12.2 Bleeding pumps........................................................ 49
12.3 Setting the Flow Control dosing monitors................. 50
12.4 Checking sensors..................................................... 50
13 What happens in the event of incorrect operation?............ 51
14 Maintenance....................................................................... 52
14.1 Inspection work by the operator................................ 52
14.2 Service work by the Service team............................ 53
15 Repairs................................................................................ 55
16 Troubleshooting.................................................................. 56
16.1 Faults without error messages.................................. 56
16.2 Functional faults with LED signals on control box.... 57
16.3 Functional faults with LED signals on pumps........... 57
16.4 Replacing the mains fuse box................................... 57
17 Decommissioning................................................................ 59
17.1 For a short period..................................................... 59
17.2 Over longer periods.................................................. 60
18 Disposal.............................................................................. 62
19 Technical data..................................................................... 63
20 Dimension sheet ................................................................ 66
21 Ordering Information........................................................... 67
22 Wiring diagram.................................................................... 71
23 EC Declaration of Conformity for Machinery....................... 73
24 Chlorine dioxide hazardous substance data sheet............. 74
24.1 Physical and chemical properties............................. 74
24.1.1 Chemical characterisation..................................... 74
24.1.2 Properties of gaseous chlorine dioxide.................. 74
24.1.3 Properties of an aqueous solution of chlorine
dioxide................................................................... 74
24.2 Handling aqueous chlorine dioxide solutions............ 75
24.2.1 Labelling and characters........................................ 75
24.2.2 Storage.................................................................. 75
24.2.3 Measures in the event of spillage, escape, gas
leaks...................................................................... 75
24.2.4 Measures in the event of fires................................ 75
24.2.5 Disposal................................................................. 75
24.3 Health protection....................................................... 75
24.3.1 MAC value and odour threshold............................ 75
24.3.2 Personal protective equipment.............................. 76
24.3.3 Health hazards....................................................... 76
24.3.4 First Aid.................................................................. 76
24.4 More Information....................................................... 76
25 Index................................................................................... 78
Table of contents
4

1 Product identification CDEa
Type Max. ClO2 output Part no.
CDEa 45 45 g/h 1047456
CDEa 80 80 g/h 1047457
CDEa 140 140 g/h 1047458
Product identification CDEa
5

2 About this system
Connection-ready complete Bello Zon® CDEa chlorine dioxide sys‐
tems are used in the continuous production and metering of 5 to
200 g of chlorine dioxide per hour with diluted chemicals. The
system is winning over customers, thanks to its simple operation
and clearly laid out construction. The metering pump stroke lengths
are continuously monitored, thereby avoiding inadmissible oper‐
ating statuses arising from incorrect pump stroke length adjust‐
ment.
The system controller is very easy to operate, consisting of a cen‐
tral Start-Stop key and colour-differentiated LEDs to display all the
operating statuses. The system can be controlled via a 0/4-20mA
external Pause contact of via a contact water meter. Warning and
alarm messages are made available via separate relay outputs.
About this system
6

3 Safety chapter
The following signal words are used in these operating instructions
to denote different levels of danger:
The following signal words are used in these operating instructions
to denote different severities of danger:
Signal word Meaning
DANGER Denotes a possibly hazardous situation. If
this is disregarded, it will result in serious inju‐
ries.
WARNING Denotes a possibly dangerous situation. If
this is disregarded, you are in a life-threat‐
ening situation and this can result in serious
injuries.
CAUTION Denotes a possibly dangerous situation. If
this is disregarded, it could result in slight or
minor injuries or material damage.
The following warning signs are used in these operating instruc‐
tions to denote different types of danger:
Warning signs Type of danger
Warning – high-voltage.
Warning – explosive sub‐
stances.
Warning – danger zone.
1. - Ensure that the two components Bello Zon® acid (dilute HCl)
and Bello Zon® chlorite (dilute NaClO2) are never be brought
into contact with each other except in the reactor, otherwise
poisonous ClO2 gas can then form abruptly and decompose
explosively!
2. - Never operate the Bello Zon® CDEa chlorine dioxide system
with undiluted acid or undiluted sodium chlorite, otherwise
poisonous ClO2 gas will form abruptly and decomposes explo‐
sively within the reactor!
3. - Ensure that the bypass is never empty as long as the system
is connected to the mains voltage and that the bypass water
is never placed under vacuum pressure, otherwise the ClO2
solution in the reactor is placed under a vacuum, the ClO2
outgasses, forms a richer mixture and can decompose explo‐
sively!
Labelling of safety notes
Identification of safety notes
Warning signs denoting different
types of danger
The three basic rules
Safety chapter
7

nThe Bello Zon® CDEa system is intended solely for producing a
disinfectant solution containing ClO2 from dilute hydrochloric
acid (9 %) and sodium chlorite solution (7.5 %) and for
metering it into a bypass line together with water.
nAny other uses or modifications to the system are prohibited!
nDie Bello Zon® system is not designed for treating liquids (other
than water) or gaseous media, as well as substances with
ClO2!
nDo not operate the system under conditions other than those
described in the technical data!
nThe system is not intended for use outdoors.
nDo not allow untrained personnel to operate the Bello Zon®
system! All other work should only be carried out by trained
and authorised personnel, see the following table!
nYou are obliged to observe the information contained in the
operating instructions at the different phases of the system's
service life!
nPlease observe the relevant national regulations and guide‐
lines at every phase of the device's service life!
WARNING!
According to accident statistics, holiday replace‐
ments are a safety risk.
– Holiday replacements should also hold the
named qualifications and have been instructed
accordingly.
Task Qualification
Installation, installation of
hydraulic system
Trained qualified personnel
Electrical installation Electrical technician
Initial commissioning Service - authorised by ProMi‐
nent
Start up Technical experts
Operation, canister replace‐
ment
Instructed person
Maintenance, repair Service - authorised by ProMi‐
nent
Decommissioning, disposal Technical experts
Troubleshooting Service - authorised by ProMi‐
nent, technical experts,
instructed personnel
(depending on fault)
Technical experts
A technical expert is deemed to be a person who is able to assess
the tasks assigned to him and recognize possible hazards based
on his/her technical training and experience, as well as knowledge
of applicable regulations.
Note:
Intended use
Qualification of personnel
Explanation of the table:
Safety chapter
8

A technical qualification is typically proved by the required comple‐
tion of a technical training course, e.g. as an engineer or
craftsman. The assessment of a person's technical training can
also be based on several years of work in the relevant field.
Qualified employee
A qualified employee is deemed to be a person who is able to
assess the tasks assigned to him and recognise possible dangers
based on his/her technical training, knowledge and experience, as
well as knowledge of pertinent regulations.
Note:
A qualification of equal validity to a technical qualification can also
be gained by several years employment in the relevant work area.
Instructed person
An instructed person is deemed to be a person who has been
instructed and, if required, trained in the tasks assigned to him/her
and possible dangers that could result from improper behaviour, as
well as having been instructed in the required protective equipment
and protective measures.
Service
Service refers to service technicians, who have received proven
training and have been authorised by ProMinent to work on the
system.
The safety equipment available and how it is tested, is contained in
the "Start up" chapter.
nAccess only for trained personnel.
nIf there is a smell of chlorine dioxide (pungent, chlorine-like
smell) access is only permitted to personnel wearing the speci‐
fied protective equipment.
nIf there is a smell of chlorine dioxide, immediately switch off the
system from a safe position, e.g. emergency stop switch, which
is installed at a distance from the system.
WARNING!
Danger from incorrect operation
Incorrect operation can result in dangerous condi‐
tions for the system and its surroundings.
– The operating personnel should be instructed
by a ProMinent service technician (Undertaken
during initial commissioning.)
–The operating instructions should be available
adjacent to the system.
Safety equipment
Instructions for entering a room in
which a chlorine dioxide system is
installed
Safety notes
Safety chapter
9

WARNING!
Danger due to hazardous ClO2 gas
Under rare fault conditions toxic ClO2 solution and
gas can escape via a leak.
– A gas detector should be installed if no other
measure is provided to ensure personnel
safety in the event of ClO2 escaping.
–The gas detector should reliably switch off the
system if ClO2 gas escapes and trigger an
alarm that is readily apparent from a distance.
WARNING!
Danger from hazardous substances!
Possible consequence: Fatal or very serious inju‐
ries.
Please ensure when handling hazardous sub‐
stances that you have read the latest safety data
sheets provided by the manufacture of the haz‐
ardous substance. The actions required are
described in the safety data sheet. Check the
safety data sheet regularly and replace, if neces‐
sary, as the hazard potential of a substance can be
re-evaluated at any time based on new findings.
The system operator is responsible for ensuring
that these safety data sheets are available and that
they are kept up to date, as well as for producing
an associated hazard assessment for the worksta‐
tions affected.
WARNING!
Danger due to hazardous substances
By operating this system the operator generates
hazardous substances.
The operator is responsible for adapting the oper‐
ating instructions to their system in the event that
more recent knowledge about the dangers associ‐
ated with a hazardous substance and its avoid‐
ance become available or national regulations pre‐
scribe something else to that stated in the supplied
operating instructions.
Keywords when searching for the necessary regulations:
nChlorine dioxide systems
nChlorine dioxide (possibly chlorination as well)
nPotable water
nFood safe
nHydrochloric acid
nSodium chlorite
nStorage
nHazardous substances
nPersonal protective equipment
Note for the system operator
Safety chapter
10

nFace mask
nRubber or plastic boots
nProtective gloves (ClO2-resistant type!)
nProtective apron
nFull-face protective mask
n1 replacement filter per protective mask
WARNING!
The required type and configuration of personal
protective equipment may vary from country to
country and change over time.
nYou have already come into contact with acid: Refer to the
"Acid safety data sheet" provided by the supplier!
nYou have already come into contact with chlorite: Refer to the
"Chlorite safety data sheet" provided by the supplier!
nYou have come into contact with ClO2 solution or ClO2 gas:
Refer to the "Chlorine dioxide hazardous substance data sheet:
Properties of chlorine dioxide and instructions for handling
aqueous solutions" in the appendix.
nAn orange-yellow ClO2 gas has escaped: Clear the room
immediately and disconnect the power supply, for example
using the emergency stop switch! Wear complete personal pro‐
tective equipment and ensure the gas is precipitated out of the
atmosphere using a water spray! Refer also to the "Chlorine
dioxide hazardous substance data sheet: Properties of chlorine
dioxide and instructions for handling aqueous solutions" in the
appendix.
nAn orange-yellow ClO2 solution has escaped: Clear the room
immediately and disconnect the power supply, for example
using the emergency stop switch! Wear complete personal pro‐
tective equipment and pour sodium thiosulphate solution over
the ClO2 solution, then dilute with lots of water and wash away
into the drain. Refer to also "Chlorine dioxide hazardous sub‐
stance data sheet: Properties of chlorine dioxide and instruc‐
tions for handling aqueous solutions" in the appendix.
nThe Bello Zon® system was fed with concentrated chemicals
and the metering pumps have already pumped them as far as
the reactor: Clear the room immediately and disconnect the
power supply, for example using the emergency stop switch!
Inform the fire service, explaining about the risk of an explosion
due to concentrated ClO2 gas! ClO2 gas can still explode after
several hours! Refer also to "Chlorine dioxide hazardous sub‐
stance data sheet: Properties of chlorine dioxide and instruc‐
tions for handling aqueous solutions" in the appendix to the
operating instructions!
nThe Bello Zon® system was fed with concentrated chemicals
and the metering pumps have not yet started to pump: immedi‐
ately switch off the Bello Zon® system (
[Start/Stop] )! Place
each suction lance in a bucket of water and provide chemical
drums with diluted chemicals. Arrange for the concentrated
chemicals to be properly disposed of. Refer also to "Chlorine
dioxide hazardous substance data sheet: Properties of chlorine
dioxide and instructions for handling aqueous solutions" in the
appendix!
Personal protective equipment
Information in the event of an emer‐
gency
Safety chapter
11

WARNING!
The required information for the emergency may
vary from country to country and change over time.
Sound pressure level LpA < 70 dB according to EN ISO 20361
at maximum stroke length, maximum stroke rate, maximum back
pressure (water)
Sound pressure level
Safety chapter
12

4 Storage and Transport
WARNING!
Only return the device for repair in a cleaned state
and with flushed hydraulic components - refer to
the "Decommissioning" chapter!
Only send the unit together with a completed
Decontamination Declaration. The Decontamina‐
tion Declaration constitutes an integral part of an
inspection / repair order. A unit can only be
inspected or repaired when a Decontamination
Declaration is submitted that has been completed
correctly and in full by an authorised and qualified
person on behalf of the operator.
The "Decontamination Declaration" can be found in
the Appendix or at www.prominent.com/en/down‐
loads.
WARNING!
Ensure that the system is thoroughly rinsed
through before moving or transporting it - see
"Decommissioning" chapter.
NOTICE!
Danger of material damage
The device can be damaged by incorrect or
improper storage or transportation!
– The device should only be stored or trans‐
ported in a well packaged state - preferably in
its original packaging.
–The packaged unit should also only be stored
or transported in accordance with the stipu‐
lated storage conditions.
– The packaged unit should be protected from
moisture and the ingress of chemicals.
Ambient conditions - refer to "Technical Data" chapter.
Miscellaneous: Protect against sunlight
Included in the scope of supply:
nOperating instructions for the CDEa
nOperating instructions for the solenoid metering pump gamma/
X
nThe mounting kit (mounting equipment and threaded cable
connectors)
n6 spacers
nLabels for suction lances / suction assemblies
nWarning signs - refer to "Assembly" chapter
Weight - refer to "Technical Data" chapter.
Safety notes
Ambient conditions for the Bello Zon®
system
Scope of supply
Weight
Storage and Transport
13

5 Requirements relating to the installation location
CAUTION!
Warning against illegal operation
Observe the regulations that apply where the
device is installed.
nDo not locate the chlorine dioxide system outdoors.
nProvision should be made for protecting the chlorine dioxide
system against unauthorised access.
nProtect the site of the chlorine dioxide system from direct sun‐
light, other radiation and strong sources of heat and ensure
that it is also frost-proof and well ventilated.
nFor ambient conditions - refer to "Technical Data" chapter.
nThe atmosphere should be non-condensing and non-corrosive.
nAllow sufficient space around the system to adjust it and main‐
tain it.
nIt should be possible to transport the component storage tanks
to the system without obstruction.
nProvide for emergency escape route.
nEnsure that a flat, vertical and load bearing wall or frame is
available when mounting the Bello Zon® system.
nEnsure that a water tap is available.
nProvide for a drain in the floor.
nIf a gas detector is necessary, it must be possible to fit it.
nEnsure that mains voltage is available.
nInstall an emergency shut-off switch for the mains voltage out‐
side the installation room.
Below are some of the regulations which apply within Germany:
nThe Accident Prevention Regulation (UVV) "Chlorination of
Water", [in German] GUV-V D5 (previously GUV 8.15), April
1979
nThe Directives for the Protection of Groundwater Against Pollu‐
tion [in German] (section 19 of the German Federal Water Act
(WHG) Edition 31.07.2009)
nThe German Ordinance on Hazardous Substances (GefStoffV)
- especially section 17 (General Duty of Protection) and section
20 (Operating Instructions; see also Accident Prevention Regu‐
lations section 9) [in German]
Safety notes
Requirements relating to the chlorine
dioxide system installation site
Note for the system operator
Requirements relating to the installation location
14

6 Assembly
WARNING!
Danger due to the sudden unexpected escape of
hazardous chlorine dioxide solution
The seals, which are exposed to chlorine dioxide
solution, will start to leak if they are not replaced
early enough.
– Set up the system so that it can be accessed
easily for maintenance.
The supplied mounting kit contains the necessary
hangar bolts, rawlplugs, washers and nuts
(mounting kit = plastic bag with fixings and
threaded cable connectors...).
6 spacers are also supplied with the system.
Select the mounting height of the Bello®Zon panel so that:
nThe metering pumps' LCD screens can be easily read
nThe
[START/STOP] key on the control box is easily accessible
nThe liquid levels of the full chlorite and acid component storage
tanks are below the level of the metering pumps
nThe maximum priming lift of the metering pumps is not
exceeded, see "Technical data" table in the appendix
nThere is still sufficient space for the component storage tanks
below the bracket.
Personnel: nTechnical personnel
1. Secure the chlorine dioxide system on a suitable, flat and
vertical wall, or frame as close as possible to the point of
injection. Dimension sheets - see appendix
2. After fitting, apply Vaseline to the metallic fastenings to pre‐
vent corrosion.
3. Attach the warning signs according to the national regula‐
tions at the access to the chlorine dioxide system and the
chemical store or any other locations so that they are clearly
visible (Warning signs according to German regulations, see
Ä „Warning labels“ on page 17 in the scope of supply).
Safety notes
Fitting the bracket
Assembly
15

85 35 9-11,5
P_PMA_BEZ_0135_SW
3
Fig. 2: Fixing plate
1 Rawlplug
2 Hanger bolt
3 Spacer
4 Hexagon nut
5 Washer (metal)
7 Protective cap
CAUTION!
Warning against illegal operation
Observe the regulations that apply where the
device is installed.
Provided national regulations do not require otherwise, use signs
with the shape and type given below.
a) Attach both these signs together at the entrances to rooms in
which Bello Zon® chlorine dioxide systems are set up:
Warning sign * Warning label * Included text
Chlor. dioxide equipment
Access only for
trained personnel
P_BEZ_0004_SW
Chlorine dioxide
system.
Access only for
trained personnel.
* Mandatory in Germany
b) Attach both these signs together at the entrances to rooms in
which sodium chlorite is stored or used:
Warning labels
Assembly
16

Warning sign * Warning label * Included text
Sodium chlorite
NaClO2
P_BEZ_0003_SW
Sodium chlorite
NaCIO2
* Mandatory in Germany
c) Attach this sign in rooms in which sodium chlorite is handled:
Warning label * Included text
Do not use storage tank
and devices alternately
Sodium chlorite + acid
= highly toxic chlor. dioxide gas
DANGER TO LIFE!
P_BEZ_0005_SW
Do not interchange storage
tanks and devices.
Sodium chlorite + acid = highly
toxic chlorine dioxide gas.
Danger to life!
* Mandatory in Germany
This applies to stores and dispensing rooms in which the chemical
drums are located, which are then connected to the Bello Zon®
systems.
d) Always ensure that this sign is clearly visible on the bypass line.
It should remind operators: "Bypass with ClO2 never without
water!"
Fig. 3
If a gas detector is necessary, fit it in line with instructions provided
by a professional. Select the location of its sensor in line with the
installation location and surroundings!
Installation location of gas detector
(accessories)
Assembly
17

7 Installation
CAUTION!
Warning against illegal operation
Observe the regulations that apply where the
device is installed.
7.1 Installation, hydraulic
DANGER!
Warning of hazardous chlorine dioxide vapours
Hazardous chlorine dioxide vapours can escape
through to a broken bypass line.
– Only use PVC or PVDF pipes for the bypass
line. Chlorine dioxide corrodes other materials
too strongly.
–Only use PVC pipes with pressure rating PN
16 for the bypass line to allow for long-term
scaling of the PVC.
– Do not exceed the maximum permissible
system operating pressure - see "Safety equip‐
ment bypass line" - "PVC bypass line specifica‐
tions"). Do not allow pressure surges to occur.
WARNING!
The reactor can explode
During operation, uncontrolled sucking through of
chemicals may occur if the bypass line of the Bello
Zon® system enters a vacuum pressure state. Con‐
sequently, if a high vacuum pressure exists
together with the simultaneous formation of gas/
water mixed phases, chlorine dioxide can gas out.
Under unfavourable circumstances, the critical gas
concentration of 300 g/m3 is exceeded and the
reactor can explode.
– Take appropriate measures to ensure the
bypass line of the Bello Zon® system is not
placed under vacuum pressure (for example
install a ProMinent flushing valve with venting
mechanism).
–Take appropriate measures to ensure that the
bypass line of the Bello Zon® system is always
completely full.
– Install equipment that always switches the
system to a voltage-free state if the bypass line
is not completely full.
In essence, the following components must be hydraulically
installed:
nBypass line
nSafety equipment bypass line
Safety notes
Main components
Installation
18

nAdditional safety fittings
nFlow generator bypass line
nPoint of injection
nFlushing equipment with vacuum relief valve
nSuction lance and level switch for dilute acid
P_PMA_BEZ_0137_SW
Fig. 4: Installation example A: the reactor outlet valve (7) of the Bello Zon® system is located beneath the
point of injection (9)
1 Water meter (frequency or analogue signal)
2 Main water supply
3 Bypass line
4 Bypass pump (accessory)
7 Reactor outlet valve
8 Flushing equipment with vacuum relief valve
(accessory)
9 Point of injection (flange and immersion pipe)
(accessory)
10 Delay tank
11 Sample water line
12 Chlorine dioxide measuring point (for example
with CDE sensor) (accessory)
13 Acid in safety collecting pan (accessory)
14 Chlorite in safety collecting pan (accessory)
16 Back pressure valve (accessory)
Installation examples
Installation example A
Installation
19

P_PMA_BEZ_0138_SW
Fig. 5: Installation example B: the reactor outlet valve (7) of the Bello Zon® system is located above the point
of injection (9): Back pressure valve (16) and vent valve (8) required in the bypass line.
7.1.1 Bypass line
DANGER!
Warning of hazardous chlorine dioxide vapours
Hazardous chlorine dioxide vapours can escape
through to a broken bypass line.
– Only use PVC or PVDF pipes for the bypass
line. Chlorine dioxide corrodes other materials
too strongly.
–Only use PVC pipes of pressure rating PN 16
for the bypass line to allow for long-term
scaling of the PVC.
– Do not exceed the maximum permissible
system operating pressure - see "Safety equip‐
ment bypass line" - "PVC bypass line specifica‐
tions"). Do not allow pressure surges to occur.
Installation example B
Installation
20