Alfalaval Toftejorg SaniJet 25 Operation instructions

Covering: Standard Machines
Q-doc - Equipment Documentation (3.1 Inspection Certificate – EN 10204)
Q-doc + FAT-SAT - Qualification Documentation
Machines delivered with ATEX/IECEx Certification in accordance with Directive 2014/34/EU
USP Class VI materials. TE91A760. First published: 2004-05
ESE01842-EN16 2019-05
Original manual
Instruction Manual
Alfa Laval Toftejorg™ SaniJet 25 Rotary Jet Head

Table of contents
The information herein is correct at the time of issue but may be subject to change without prior notice
1. EC/EU Declaration of Conformity .................................................................. 5
2. Safety .................................................................................................... 6
2.1. Important information ............................................................................. 6
2.2. Warning signs ..................................................................................... 6
3. Introduction ............................................................................................ 7
3.1. Introduction ........................................................................................ 7
3.2. Intended use ...................................................................................... 8
3.3. Patents and trademarks ......................................................................... 8
3.4. Marking ............................................................................................ 9
3.5. ATEX/IECEx marking ............................................................................. 10
3.6. ATEX/IECEx temperature class and code ...................................................... 11
3.7. Quality system .................................................................................... 11
4. Installation .............................................................................................. 12
4.1. General description ............................................................................... 12
4.2. Functioning ........................................................................................ 13
4.3. General safety and installation instructions ..................................................... 14
4.4. Specific conditions for safe use in accordance with ATEX/IECEx Certification ............. 16
5. Operation ............................................................................................... 19
5.1. Normal operation ................................................................................. 19
5.2. Safety precautions ................................................................................ 20
6. Maintenance ........................................................................................... 21
6.1. Preventive maintenance .......................................................................... 21
6.2. Service and repair of ATEX/IECEx certified machines ......................................... 21
6.3. Service and repair of machines ordered with Q-doc and with Q-doc + FAT-SAT .......... 22
6.4. Maintenance intervals and service kits ......................................................... 23
6.5. General assembly/disassembly recommendations ............................................ 24
7. Trouble shooting guide ............................................................................... 25
8. Technical data ......................................................................................... 26
8.1. Technical data ..................................................................................... 26
9. Product program ...................................................................................... 28
9.1. Standard configurations .......................................................................... 28
9.2. Available add-ons ................................................................................. 28
9.3. Available add-ons for spare parts ............................................................... 29
10. Parts lists and drawings, service kits and tools ................................................. 30
10.1.SaniJet 25 for machines with -0x and -7x (after August 2012) .............................. 30
10.2.SaniJet 25 for machines with -5x, -6x, -8x and -9x (after August 2012) .................... 32
10.3.SaniJet 25 FFKM/SS FFKM ..................................................................... 34
10.4.SaniJet 25 duplex FFKM ......................................................................... 36
10.5.Service intervals ................................................................................... 38
10.6.Tool kit and tools for assembly and disassembly .............................................. 39
11. Disassembly ............................................................................................ 40
11.1.Disassembly into main subassemblies ......................................................... 40
11.2.Disassembly of lower parts (hub) ................................................................ 46
3

Table of contents
The information herein is correct at the time of issue but may be subject to change without prior notice
11.3.Disassembly of top parts (cone and turbine) ................................................... 49
11.4.Disassembly of impeller shaft assembly ........................................................ 54
11.5.Disassembly of gear ring (bearing for body – position 13.3) .................................. 55
11.6.Disassembly of planet gear (bushing – position 11.1) ......................................... 56
12. Assembly ............................................................................................... 57
12.1.Assembly of turbine .............................................................................. 57
12.2.Assembly of cone ................................................................................. 60
12.3.Assembly of top parts ............................................................................ 63
12.4.Assembly of lower parts .......................................................................... 68
12.5.Assembly of planet gear ......................................................................... 73
12.6.Assembly of gear ring ............................................................................ 74
12.7.Assembly of body parts .......................................................................... 75
12.8.Checking the assembly of body parts .......................................................... 82
13. General information ................................................................................... 83
13.1.Service and repair ................................................................................ 83
13.2.How to order spare parts ........................................................................ 83
13.3.How to contact Alfa Laval Kolding A/S ......................................................... 83
14. Miscellaneous .......................................................................................... 84
14.1.EHEDG certificate of self-cleanability ........................................................... 84
14.2.Declaration of compliance with 10/2011 Food contact materials ............................ 85
4

1 EC/EU Declaration of Conformity
The Designated Company
Alfa Laval Kolding A/S
Company Name
Albuen 31, DK-6000 Kolding, Denmark
Address
[phone]
Phone No.
hereby declare that
Tank Cleaning Machine
Designation
Alfa Laval Toftejorg SaniJet 25
Type
From serial number 2018-0001 to 2030-99999
is in conformity with Machinery Directive 2006/42/EC and the following harmonized standard is used:
DS/EN ISO 12100:2011 Safety of Machinery - Risk Assessment
is in conformity with (Ex / ATEX) Directive 2014/34/EU and the following harmonized standards are used:
EN ISO 80079-36:2016, EN ISO 80079-37:2016, DS/EN ISO/IEC 80079-34:2011, Annex A, paragraph A.5.3 Rotating machines
EC Type Examination Certificate no. Baseefa04ATEX0358X and IECEx BAS 18.0067X
II 1G Ex h IIC 85ºC... 175ºCGa
Marking: II 1D Ex h IIIC T85ºC... T140ºCDa
The QAN (Quality Assurance Notification) is carried out by SGS Fimko Oy, Särkiniementie 3, Helsinki 00211, Finland. Notified Body
No. 0598.
EU Type Examination Certification is carried out by SGS Fimko Oy, Särkiniementie 3, Helsinki 00211, Finland. Notified Body no. 0598.
IECEx Certificate of Conformity is carried out by Baseefa Ltd., Rockhead Business Park, Staden Lane, Buxton,DerbyshireSK179RZ,
United Kingdom. IECEx Accepted Certification Body (ExCB).
The person authorised to compile the technical file is the signer of this document.
Global Product Quality Manager
Pumps, Valves, Fittings and Tank Equipment Lars Kruse Andersen
Title Name Signature
Kolding 2019-05-01
Place Date (YYYY-MM-DD)
This Declaration of Conformity replaces Declaration of Conformity dated 2016-05-01
5

2Safety
SaniJet 25
Unsafe practices and other important information are emphasized in this manual.
Warnings are emphasized by means of special signs.
Always read the manual before using the tank cleaning machine!
2.1 Important information
WARNING
Indicates that special procedures must be followed to avoid serious personal injury.
CAUTION
Indicates that special procedures must be followed to avoid damage to the tank cleaning machine
NOTE
Indicates important information to simplify or clarify procedures.
2.2 Warning signs
General warning:
ATEX/IECEx warning:
6

3 Introduction
SaniJet 25
3.1 Introduction
The Alfa Laval Toftejorg SaniJet 25 Rotary Jet Head has been de-
veloped to meet the highest demands for efficiency, reliability and
hygiene within food and beverage, pharmaceutical and biochemi-
cal industry
This manual has been prepared as a guide for installing, operating
and maintaining your Alfa Laval Toftejorg tank cleaning machine.
The Alfa Laval Toftejorg SaniJet 25 is the first ever tank cleaning
machine to obtain a certificate of in-place cleanability from EHEDG
(European Hygienic Engineering Design Group). It is designed,
tested and approved according to EHEDG´s requirement for self
cleanability (EHEDG Doc. 2) and tested to be sterilizable (EHEDG
Doc. 5).
In order to maintain the hygienic state of the machine it is of highest importance that the Alfa Laval Toftejorg Sani-
Jet 25 is handled and installed according to the instructions in this manual. Scratched surfaces and/or destroyed
O-rings reduce performance and hygienic design. Therefore, it is recommended to use the correct tools specially
designed for maintenance of the Alfa Laval Toftejorg SaniJet 25 (TE81B149).
Alfa Laval offers maintenance by a trained and certified Alfa Laval Toftejorg SaniJet 25 service engineers.
Warning:
Alfa Laval offers education of you service engineer(s) for your maintenance of the Alfa Laval Toftejorg SaniJet 25
using the special maintenance tools, teaching how to maintain the Alfa Laval Toftejorg SaniJet 25 and its hygienic
state and how to test the Alfa Laval Toftejorg SaniJet 25 after maintenance.
If the Alfa Laval Toftejorg SaniJet 25 stops rotating unintentionally within the warranty period, please return the machine to Alfa
Laval Kolding A/S. Please do not try to fix any mechanical problems before shipping.
Should you require further assistance, our Technical Sales Support department and worldwide net of sales offices are pleased
to help you. Please quote the type, article and serial numbers with all of your enquiries; this helps us to help you. The type and
serial number are placed on the body of the tank cleaning machine.
Warning: Before installing the machine and setting it into operation carefully read the General Safety and Installation
Instructions (page 14) and the Specific conditions for safe use in accordance with the ATEX/IECEx directive
2014/34/EU (page 16) and take all necessary precautions according to your application and local regulations.
NOTE
The illustrations and specifications contained in this manual were effective at the date of printing. However, as continuous
improvements are our policy, we reserve the right to alter or modify any unit specification on any product without prior notice or
any obligation.
The English version of the instruction manual is the original manual. We make reservations in regard to possible mistranslations in
language versions of the instruction manual. In case of doubt, the English version of the instruction manual applies.
7

3Introduction
SaniJet 25
3.2 Intended use
The end-user should verify:
- that the tank cleaning machine is in conformity with respect to tank, vessel or container size in which it is used.
- that the construction materials (both metallic and nonmetallic) are compatibility with product, flushing media, cleaning
media, temperatures and pressure under the intended use.
The tank cleaning machine/rotary jet mixer is intended for use in closed tank, vessel or container. If used in open environment
see 4.3 General safety and installation instructions (page 14).
To ensure the self cleanability and drainability the machine must be installed in vertical position.
3.3 Patents and trademarks
This Instruction Manual is published by Alfa Laval Kolding A/S without any warranty. Improvements and changes to this Instruction
Manual may at any time be made by Alfa Laval Kolding A/S without prior notice. Such changes will, however, be incorporated in
new editions of this Instruction Manual.
Alfa Laval Kolding A/S. All rights reserved.
TheAlfaLavallogotypeisatrademarkoraregisteredtrademarkofAlfaLavalCorporateAB."Toftejorg"and“SaniJet”aretrade-
marks or registered trademarks of Alfa Laval Kolding A/S. The Toftejorg™ SaniJet™ 25 product has patents in the EPO member
states (EP 0 560 778), in the US (5333630) and in other countries and has a new patent pending (200600176 & 200600177 &
200700902). Other products or company names mentioned herein may be the trademarks of their respective owners. Any rights
not expressly granted herein are reserved.
8

3 Introduction
SaniJet 25
3.4 Marking
or
A
4107-0053
A: Marking area
Serial number explanation
Machines supplied with or without standard documentation:
yyyy-xxxxx: serial number
yyyy: year
xxxxx: 5 digit sequential number
Serial number explanation
Machines supplied with Q-doc + FAT-SAT documentation:
yyyy-FAT-SAT-xxx: serial number
yyyy: year
xxx: 3 digit sequential number
9

3Introduction
SaniJet 25
3.5 ATEX/IECEx marking
The Alfa Laval Toftejorg SaniJet 25 is certified as category I component. The ATEX certification is carried out by the Notified
Body SGS Fimko Oy, who has issued the certificate no. Baseefa04ATEX0358X.
The IECEx certification is carried out by the Certification Body SGS Baseefa Ltd., who has issued the certificate no. IECEx
BAS 18.0067X.
Note
Explosion protection type is constructional safety “c”.
The marking on the ATEX/IECEx certified Alfa Laval Toftejorg SaniJet 25 is as follows (for information on marking position
see section 3.4 Marking).
Rotary Jet Head
SaniJet 25
s/n.: yyyy-xxxxx
Alfa Laval, DK-6000 Kolding, Albuen 31
II 1G Ex h IIC 85°C…175°C Ga
II 1D Ex h IIIC T85°C…T140°C Da
0598 Baseefa 04ATEX0358X IECEx BAS 18.0067X
Rotary Jet Head
SaniJet 25
s/n.: yyyy-FAT-SAT-xxx
Alfa Laval, DK-6000 Kolding, Albuen 31
II 1G Ex h IIC 85°C…175°C Ga
II 1D Ex h IIIC T85°C…T140°C Da
0598 Baseefa 04ATEX0358X IECEx BAS 18.0067X
Serial number explanation
Machines supplied with or without standard documentation:
yyyy-xxxxx: serial number
yyyy: year
xxxxx: 5 digit sequential number
Serial number explanation
Machines supplied with Q-doc + FAT-SAT documentation:
yyyy-FAT-SAT-xxx: serial number
yyyy: year
xxx: 3 digit sequential number
10

3 Introduction
SaniJet 25
3.6 ATEX/IECEx temperature class and code
The maximum surface temperature depends mainly on operating conditions which are the temperature of the cleaning fluid and
the ambient temperature.
Group II EPL Ga
The gas temperature class is corrected with a safety margin of 80% due to a requirement for Group ll EPL Ga equipment.
The gas temperature class depends on the cleaning fluid temperature or the ambient temperature, whichever of the two is
the highest.
Table for determining temperature class (gas atmospheres)
Temperature Class Cleaning fluid temperature,
Tp(°C)
Ambient temperature,
Tamb (°C)
85°C (T6) ≤+68°C ≤+68°C
100°C (T5) ≤+80°C ≤+80°C
135°C (T4) ≤+108°C ≤+108°C
175°C ≤+140°C ≤+140°C
Group III EPL Da
The dust temperature class depends on the cleaning fluid temperature or the ambient temperature, whichever of the two is
the highest.
No dust layer is considered.
Table for determining temperature class (dust atmospheres)
Temperature code Cleaning fluid temperature,
Tp(°C)
Ambient temperature,
Tamb (°C)
T85°C ≤+85°C ≤+85°C
T100°C ≤+100°C ≤+100°C
T135°C ≤+135°C ≤+135°C
T140°C ≤+140°C ≤+140°C
Example of gas class determination
Cleaning fluid temperature is 67°C and ambient temperature is 75°C.
Gas class = T5
ATEX/IECEx marking on the equipment:
II 1G Ex h IIC 85°C…175°C Ga
II 1D Ex h IIIC T85°C…T140°C Da
3.7 Quality system
The SaniJet 25 is designed in accordance with the EHEDG design guidelines for sanitary design of processing equipment and is
the first ever rotating jet head that has been awarded the certificate of compliance from EHEDG, showing that the machine has
passed the EHEDG test (Doc. 2) for cleanability. In addition the machine is proven to be sterilizable based on EHEDG test (Doc.
5). It is produced according to Alfa Laval Kolding’s ISO 9001 International Standard certified quality system. All parts are made
from certified material and all non-metal parts are made from FDA and EU 10/2011 compliant materials and also available as
USP Class VI materials. All materials has full traceability according to EU1935/2004/EC.
11

4 Installation
SaniJet 25
4.1 General description
The Alfa Laval Toftejorg SaniJet 25 is a media driven and media lubricated tank cleaning machine. No lubricating substances
such as oil, grease etc. are used. All materials complies with FDA 21CFR§177 and for polymers also EU 10/2011, which makes
the SaniJet 25 suited for sanitary and hygienic applications such as Food and Pharmaceutical industries. The machine is
self-cleaning; i.e. all internal and external surfaces are cleanable, drainable and sterilizable.
The Alfa Laval Toftejorg SaniJet 25 is a sanitary cleaning device of the rotary jet head type for permanent installation that
provides a 360° indexed cleaning pattern. Provided it is installed in a vertical position, the Alfa Laval Toftejorg SaniJet 25 is
proven completely self-cleaning by the EHEDG test method and self-draining. Using the Sanitary welding connection between
down pipe and machine provides a self cleanable connection. All product contact surfaces are AISI 316L, duplex SAF 2205
stainless steel or FDA compliant polymer materials.
For use in explosive hazard zones the ATEX/IECEx version can be used, provided it is installed according to safety instructions
in local regulations.
No exposed threads or screws are present in the product contact areas.
The Alfa Laval Toftejorg SaniJet 25 is designed for use in pharmaceutical, biotechnology, food and dairy processing applications.
Recommended for use in tanks and vessels between 0.5-30 m3(130-8,000 US gallons) for larger tanks multiple units may
be used.
12

4 Installation
SaniJet 25
4.2 Functioning
The cleaning fluid passing through the machine passes through a turbine, which accordingly is set into rotation. The turbine
rotation is transmitted through a set of gears and drive shaft to the machine body and the hub cover with nozzles.
The combined rotation of the machine body and the nozzles ensure a fully indexed tank cleaning coverage as illustrated below
for a spherical tank with the machine placed in the centre. For light soiling only 1 cycle could be sufficient and for heavier soiling
a full pattern (8 cycles) may be needed. One cycle provides a coarse pattern and is build from 55/8 revolutions of the hub
cover with nozzles; corresponding to 53/8 revolutions of the machine body. During the following cycles, this coarse pattern is
repeated 7 times, each coarse pattern displaced slightly. Hence, the pattern gradually becomes denser. Finally, after 8 cycles
(a total of 45 revolutions of the hub cover with nozzles and 43 revolutions of the machine body), a complete cleaning pattern
has been laid out, and the pattern starts over from the original starting point.
First cycle Full pattern
The number of cycles needed to perform a proper cleaning depends on type of soil, distance between tank cleaning machine
and tank wall, cleaning procedure and cleaning agent. For residues that are easily mobilized, i.e. easy to remove, one cycle could
be sufficient. Heavier soiling (high viscous, sticky substances, etc.) requires more cycles (a denser pattern).
The rotation speed of the turbine depends on the flow rate through the machine. The higher the flow rate, the higher the speed of
rotation. In order to control the RPM of the machine for the wide range of flow rates, the machine has different turbines according
to the nozzle size.
13

4 Installation
SaniJet 25
Self-cleaning is ensured by flushing the planet gear, the hub, the bevel gear, the nozzle
head, the nozzles and the ball bearings with the CIP liquid. Furthermore, all gaps
between moving parts are flushed with CIP liquid and finally also the outside surfaces
of the machine is cleaned with the main flow of CIP liquid. In the bottom of the body,
the machine is equipped with a hole to ensure self-draining. This self-draining is only
ensured, if the machine is installed in vertical position and the drain hole in not blocked.
The threaded connection between downpipe and machine is not a product contact
surface as it is enclosed using two seals and the welding adaptor. A welding adaptor,
depending on downpipe dimensions, comes as standard with the machine.
A: Downpipe
B: Welding Adapter
C: Seal PTFE
D: Seal EPDM
TD523518
TD523517
A
B
D
C
E
E: SaniJet 25
4.3 General safety and installation instructions
The Alfa Laval Toftejorg SaniJet 25 tank cleaning machine should be installed in vertical upright position with the connections
pointing upward. Failure to do so means that the Alfa Laval Toftejorg SaniJet 25 is no longer gravity drainable (influences
cleanability and increases risk of corrosion) and the maintenance intervals may be shortened.
It is recommended that the cleaning fluid supply line is equipped with a filter that traps solids with a particle size of 250µm (0.01”)
or smaller. Avoid solid particles, to minimize wear and unscheduled maintenance as particles can be caught in one of the
internal passages of the machine and cause it to stop rotating.
In order to separate the CIP system from the process it is recommended to install a shutoff valve close to the machine inlet.
This also prevents back-flow of liquid from the tank through the machine in case the cleaner head is submerged and there is
an over-pressure inside the tank. The installation and operation shall be made in such a way that the gravity draining of the
machine is ensured.
It is recommended that the fluid valve fitted is of a type that prevents hydraulic shocks, which may cause severe damage to
the Alfa Laval Toftejorg SaniJet 25 and/or the entire installation. Ideally, a frequency controlled pump with a ramp function for
start-up is used for supply of cleaning liquid.
Before connecting the machine to the system, all supply lines and valves should be flushed in order to remove foreign objects.
During handling and installation handle the machine with care in order not to damage surfaces of the machine.
The Alfa Laval Toftejorg SaniJet 25 machine has been tested at the factory before shipping. You can check that the machine is in
operating condition by blowing compressed air into the inlet, while holding the machine by the cone (position 1) and verify that
the rest of the machine rotates evenly. If resistance is recognised, the machine should be disassembled in order to localise the
cause or returned to the nearest Alfa Laval Service Centre.
14

4 Installation
SaniJet 25
Connect the welding adaptor to the supply line. Screw the machine tightly onto the welding adaptor using a 36 mm flat jawed
spanner (tool No. TE81B159) on the flats machined on the inlet cone.
NOTE
Do not try to turn the nozzle head by hand, since this may damage the gear. The nozzle head can be turned by blowing
compressed air through the inlet connection.
NOTE
The machine shall be installed in accordance with national regulations for safety and other relevant regulations and standards.
In EU-countries the complete system must fulfil the EU-Machinery Directive and depending of application, the EU-Pressure
Equipment Directive, the EU-ATEX/IECEx Directive and other relevant Directives and shall be CE-marked before it is set into
operation.
Warning: Precautions shall be made to prevent starting of the cleaning/mixing operation, while personnel are inside the
tank or otherwise can be hit by jets from the nozzles.
ALWAYS use the welding adaptor included with the machine to connect the machine to the down-pipe. Otherwise the hygienic
state of the installation is compromised. The welding adaptor’s one end is welded onto the downpipe (weld must be of a hygienic
quality following e.g. EHEDG guideline nr. 35 or 3-A recommendations of using AWS/ANSI D18.1)
Subjected to the environment of intended use and any in-house user requirements or policies adhesive such as Loctite No. 243
or equivalent could be used. Other methods could be acceptable and subject to customer preference.
For information on use in potential explosive atmospheres see section 4.4 Specific conditions for safe use in accordance with
ATEX/IECEx Certification.
15

4 Installation
SaniJet 25
4.4 Specific conditions for safe use in accordance with ATEX/IECEx Certification
Directive 2014/34/EU
NOTE
Explosion protection type is constructional safety “c”.
Warning: Operated in a hazardous area
The unit my be operated in a hazardous area only when completely filled with cleaning fluid/steam.
If a medium other than the cleaning fluid/steam is passed through the equipment the flow must not be high
enough to cause the equipment to operate.
Warning: Operating guidance
The unit shall be operated in line with guidance provided by IEC/TS 60079-32-1 for tank cleaning.
Warning: Temperature class and ambient temperature range
The maximum surface temperature depends mainly on operations conditions which is the temperature of the
cleaning fluid and ambient temperature.
The temperature class and ambient temperature range are shown in paragraph 3.6 ATEX/IECEx temperature
class and code, page 11.
Warning: Max. permitted temperature
When working:
The maximum permitted cleaning fluid temperature and ambient temperature is 95°C.
When not working:
The maximum permitted ambient temperature is 140°C.
Warning: Draining using compressed air
Draining using compressed air must not be done in ex classified zone.
Draining using compressed air is possible in non ex classified zones (see page 19).
Warning: Earthing
All metal and other conductive or dissipative material should be connected to earth with the exception of very
small items.
For further information see IEC/TS 60079-32-1:2013 Explosive atmospheres – Part 32-1: Electrostatic hazards,
guidance. With focus on clause 6.2.3, 7.2.1, 7.3, 7.9.2, 13.
Warning: Earthed when in use
The unit must be effectively earthed at all times when in use.
16

4 Installation
SaniJet 25
4.4 Specific conditions for safe use in accordance with ATEX/IECEx certification
Warning: Max. permitted steaming temperature
The maximum permitted steam temperature trough the machine and ambient temperature is 140°C.
Warning: Steaming tanks larger than 100 m³
Tanks with capacities larger than 100 m³ that could contain a flammable atmosphere should not be steam
cleaned, as steam cleaning tanks produces an electrostatically charged mist. Tanks smaller than 100 m³ may
be steam cleaned.
For further information see IEC/TS 60079-32-1:2013 Explosive atmospheres – Part 32-1: Electrostatic hazards,
guidance. With focus on clause 7.10 and 8.5.
Tank size information
NOTE: The tank cleaning machine has been certified by accredited notified body and can operate in tanks having an enclosed
volume up to 100 m³ as long as all ATEX/IECEx warnings in the instruction manual are complied with.
General guidelines for tanks larger than 100 m3:
Tanks larger than 100 m³ must not be steam cleaned – See guide IEC/TS 60079-32-1:2013 clause 7.10.5 and 8.5.
To use the unit in tanks larger than 100m³ is possible under certain conditions.
It is necessary to know the current factors such as tank size, cleaning solvent and product.
Additives can be used in the cleaning solvent, or, for example, the tank can be filled with nitrogen. The basic guidelines are
described in the guide IEC/TS 60079-32-1:2013.
It must be ensured that the equipollently bonding of all conductive metal objects is in accordance with national regulations
for use.
The cleaning fluid conductivity must correspond to the products in the group “High conductivity”, cf. IEC/TS 60079-32-1:2013
clause 7.1 and 7.2.
High conductivity >10000pS/m
Medium conductivity between 25 × εr pS/m and 10 000 pS/m
Low conductivity <25×εrpS/m
For liquids with a dielectric constant of around 2, (e.g. hydrocarbons), these classifications reduce to:
High conductivity >10000pS/m
Medium conductivity between 50 pS/m and 10 000 pS/m
Low conductivity <50pS/m
Following a guidance document such as IEC/TS 60079-32-1:2013 to establish safe use of machinery and process is the users
own responsibility and is not covered by the ATEX/IECEx certification for this unit except for tanks up to 100 m3.Forfurther
information see IEC/TS 60079-32-1:2013 Explosive atmospheres – Part 32-1: Electrostatic hazards, guidance with focus on
clause 7.1.3, 7.1.4, 7.2.1, 7.2.4.
17

4 Installation
SaniJet 25
4.4 Specific conditions for safe use in accordance with ATEX/IECEx certification
Warning: Process generated electrostatic
The user must address the electrostatic hazards generated from the process of the equipment in accordance
with guidance document IEC/TS 60079-32-1:2013.
Warning: Electrostatically charged liquid
Liquids can become electrostatically charged when they move relative to contacting solids or the spraying of
liquids can also create a highly charged mist or spray. The liquid must be made electrically conductive by
additives or otherwise.
For further information see IEC/TS 60079-32-1:2013 Explosive atmospheres – Part 32-1: Electrostatic hazards,
guidance. With focus on clause 7.1.3, 7.1.4, 7.2.1, 7.2.4.
Warning: Appropriate cleaning fluid
The cleaning fluid should be appropriate for the application (e.g. so no chemical reaction can take place between
the cleaning fluid and the residue of process fluid/powder/compound which can generate heat or a hybrid mixture).
Chemical reactions in Zone 20 - Hybrid mixtures:
End-user must ensure that the cleaning fluid used does not create a hybrid mixture according to IEC
60079-10-1:2015 Annex I.1 in connection with powder / dust residues in the tank in zone 20.
This should ensure that the atmosphere does not change to a classification that lies outside the machine’s
certified scope. When the machine is used for cleaning tanks containing potentially flammable dust atmospheres,
and a potentially flammable fluid is used as the cleaning fluid then an assessment of the hybrid mixture shall be
undertaken by the user, prior to operation.
For further information see IEC 60079-10-1:2015 Explosive atmospheres – Part 10-1: Classification of areas –
Explosive gas atmospheres. With focus on clause 3.6.6 and Annex I – Hybrid mixtures.
Warning: Fluid pressure
The maximum permitted cleaning fluid pressure is 8 bar.
In addition to the above mentioned precautions relating to Directive 2014/34/EU, the Safety Precautions on page 14 must
be observed.
18

5Operation
SaniJet 25
5.1 Normal operation
Cleaning Media
Use only cleaning fluids, which are compatible with Stainless Steel AISI 316L, SAF2205, PEEK, PFA HP, PTFE and EPDM.
Normal detergents, moderate solutions of acids and alkalics are acceptable as well as a number of solvents at ambient
temperature during cleaning. Aggressive chemicals, excessive concentrations of chemicals at elevated temperatures as well as
certain solvents and hydrochlorides should be avoided. If you are in doubt, contact your local Alfa Laval sales office.
NOTE
PEEK is not resistant to concentrated sulphuric acid.
Product
In cases where the machine is submerged in, or in other ways exposed to, product the compatibility between stainless steel
AISI 316L, SAF 2205, PEEK, PFA and EPDM and the product must be considered carefully.
NOTE
EPDM swells significantly exposed to fatty materials.
Pressure
Avoid hydraulic shocks. Increase pressure gradually. Do not exceed 8 bar inlet pressure. Recommended inlet pressure: 5-7
bar. High pressure in combination with high flow rate increase consumption of wear parts. High pressure also reduces
the cleaning effect.
Draining using compressed air
If the machine is drained using compressed air, then the compressed air pressure must not cause the machine body rotation to
exceed 4.5 rpm (corresponding to approx. 13 sec. per rev of the body) in order to avoid risk of machine breakdown.
Draining should always be done inside the tank.
See paragraph 4.4 Specific conditions for safe use in accordance with ATEX/IECEx Certification (page 16).
Steam cleaning
If stream cleaning is done through the machine, the steam pressure must not cause the machine body rotation to exceed 12
rpm (corresponding to approx. 5 sec. per rev of the body) in order to avoid risk of machine breakdown. See paragraph 4.4
Specific conditions for safe use in accordance with ATEX/IECEx Certification (page 16).
Temperature
The maximum recommended cleaning fluid temperature is 95°C. The maximum recommended steam temperature is 140°C.
The maximum ambient temperature is 140°C.
See paragraph 4.4 Specific conditions for safe use in accordance with ATEX/IECEx Certification page 16.
After use cleaning
After use flush the machine with fresh water. Cleaning media should never allow to dry or settle in the system due to possible
"salting out" or "scaling" of the cleaning media. If cleaning media contains volatile chloride solvents, it is recommended not to
flushwithwaterafter use, as this might create hydrochloric acid.
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5Operation
SaniJet 25
5.2 Safety precautions
The machine is intended for use inside a tank only. As peak velocity of main jets reaches 40 m/s, Alfa Laval Toftejorg SaniJet 25
must not be operated in open air or when tank is open.
Warning: Hot chemicals and steam under pressure may be used for cleaning and sterilising. Protect against scalding
and burning. Never tamper with or try to open clamps or other connections while system is in operation.
Make sure that system is de-pressurised and drained before disassembly.
The cleaning jets impinging the tank surface are a source of noise. Depending on pressure and distance to the tank walls,
noise level may reach up to 85 dB.
Warning: Tanks may contain poisonous/hazardous products or products which represent an environmental or safety
risk. Never open tank and dismount the machine without checking previous tank contents and necessary
precautions.
See also section 3.6 ATEX/IECEx temperature class and code, page 11.
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