INOXPA HYGINOX Ex SE Manual

INSTALLATION, SERVICE AND MAINTENANCE
INSTRUCTIONS
ANNEX FOR CE ATEX REGISTERED EQUIPMENT UNDER DIRECTIVE
2014/34/UE:
HYGINOX Ex SE
The contents of this Annex complement the information included in the instruction manual.
The instructions in this Annex must be observed whenever equipment registered under
Directive 2014/34/EU is used.
This annex is to be added to the manuals of the ATEX-certified components that form part
of the assembly (e.g. motors, etc).
INOXPA, S.A.U.
Telers, 60 Aptdo. 174
17820-Banyoles
Tel.: [phone]
Fax: [phone]
[e-mail]
www.inoxpa.com
Manual Original
01.011.30.06EN
(C) 2022/11

01.011.30.13EN
(0) 2022/11
(1) Where X is a numeric character
EU Declaration of Conformity
We,
INOXPA, S.A.U.
Telers, 60
17820 –Banyoles (Girona)
Hereby declare under our sole responsibility that the machine
CENTRIFUGAL PUMP
Designation
HYGINOX
Type
SE
From serial number IXXXXXXXXX to IXXXXXXXXX (1)
Is in compliance with applicable provisions of the following directive:
Directive ATEX 2014/34/EU
Applicable harmonized standards:
EN ISO 80079-36:2016
EN ISO 80079-37:2016
EN 1127-1:2019
EN 13237:2012
EN15198:2007
EN IEC 60079-0:2018
This Declaration of Conformity covers equipment with the following ATEX marking:
The technical documentation referenced 026687/12 is on file with the notified body INERIS, Parc
Technologique Alata BP 2 F-60550, Verneuil-en-Halatte, France. Reference num. 0080.
The person authorized to compile the technical documentation is the signer of this document.
Banyoles, 2022
II 2G Ex h IIB T4…T3 Gb
II 2D Ex h IIIB T125 ºC…T200 oC Db
II 2G Ex h IIB T4…T3 Gb
II 2D Ex h IIIB T125 ºC…T200 oC Db
David Reyero Brunet
Technical Office Manager

2 2. Safety (C) 2022/11
1.Safety
1.1. INSTRUCTIONS FOR STARTING UP
This Annex to the instruction manual, together with the manual, contains the basic indications to be fulfilled
during installation, operation, and maintenance. Consequently, it is essential that before installation, the
installer and technical personnel responsible for the plant read this Annex to the instruction manual and it
must remain permanently available in the proximity of the corresponding pump or installation.
Not only should the safety instructions indicated in this chapter be observed and fulfilled, but also the special
measures and recommendations included in the other chapters of this manual.
1.2. SAFETY
1.2.1. WARNING SYMBOLS
The safety instructions in this Annex are expressed using the symbols indicated below. Non-fulfilment of
these instructions could endanger the staff, the machine, and the operation of the machine:
This sign will identify all the safety instructions given in this Annex that relate to
the danger of forming an explosive atmosphere and creating sources of
combustion in potentially explosive atmospheres, whereby failure to comply with
those instructions may threaten your safety
1.3. GENERAL SAFETY INSTRUCTIONS
1.3.1. DURING INSTALLATION
In order to reduce the risk of static electricity, the equipment must be earthed to
ensure electrical continuity between the pipes and the pump.
1.3.2. During operation
The limits of the operating conditions in explosive atmospheres must not be
exceeded.
This pump was selected according to the operating conditions specified by the
user. Therefore, INOXPA disclaims liability for any damage caused by use of the
pump in conditions other than those stated in the order.
1.3.3. During maintenance
Danger! Important indications regarding protection from explosions
An explosive atmosphere may be created during disassembly of the pump.
Therefore, permits to work must be issued and these jobs must only be done by
qualified or trained personnel.

(C) 2022/11 1. Safety 3
1.3.4. Compliance with the instructions
Any non-fulfilment of the instructions may result in a risk for the operators, the environment and the
machine, and may result in the loss of your right to claim damages.
Non-fulfilment may cause the following risks (in addition to those indicated in the manual):
•Creation of explosive atmospheres and risk of explosion.
1.3.5. Guarantee
Any guarantee will be lawfully cancelled immediately; in addition, we will be compensated for any claims of
civil liability presented by third parties, in the case that (further to the conditions already indicated in the
manual):
•The equipment has been used improperly or has not been used in accordance with the working
conditions in the classified area, work has been carried out in a different classified area, or different
conditions of temperature or pressure and/or different substances have been used.

4 2. Table of Contents (C) 2022/11
2. Table of Contents
1. SAFETY ...................................................................................................................................... 2
1.1. Instructions for starting up................................................................................................. 2
1.2. Safety .............................................................................................................................. 2
1.3. General safety instructions ................................................................................................. 2
2. TABLE OF CONTENTS .................................................................................................................. 4
3. GENERAL INFORMATION ............................................................................................................. 5
3.1. Description ....................................................................................................................... 5
3.2. Application........................................................................................................................ 5
4. INSTALLATION............................................................................................................................ 6
4.1. Receiving the pump........................................................................................................... 6
4.2. Transport and storage ....................................................................................................... 6
4.3. Location ........................................................................................................................... 6
4.4. Pipes................................................................................................................................ 7
4.5. Electrical installation .......................................................................................................... 7
4.6. Cooled mechanical seal...................................................................................................... 8
5. STARTING UP ............................................................................................................................10
6. MAINTENANCE...........................................................................................................................11
6.1. General information..........................................................................................................11
6.2. Cleaning ..........................................................................................................................11
6.3. Spare parts......................................................................................................................12
6.4. Paintwork ........................................................................................................................12
6.5. Disassembly / assembly of the pump .................................................................................12
6.6. Assembly / disassembly pump casing .................................................................................13
7. TECHNICAL SPECIFICATIONS......................................................................................................14

(C) 2022/11 3. General information 5
3. General information
3.1. DESCRIPTION
The motors of the HYGINOX SE centrifugal pumps must be suitable for operating in explosive atmospheres.
3.2. APPLICATION
This pump was selected for a given set of pumping conditions and operating
conditions in explosive atmospheres when the order was placed. will not be
responsible for any damage caused if the information provided by the buyer is
incomplete or incorrect (type of liquid, viscosity, RPM, classification of the
potentially explosive zone, gas generated by the potentially explosive
atmosphere, etc.)

6 4. Installation (C) 2022/11
4. Installation
4.1. RECEIVING THE PUMP
The received pump must be checked to ensure that it is adapted to the working
conditions of the classified area and the conditions of the order.
4.1.1. Pump identification
The shipment should be checked in accordance with the instructions included in the manual. Also, the CE
ATEX mark inscribed on the manufacturer's plate should be checked in order to verify that it matches the
requirements of the order.
CE ATEX mark inscribed on the manufacturer’s plate.
If the equipment mark does not correspond to the order, INOXPA should be immediately informed of the
situation.
The temperature class and the maximum surface temperature depend on the temperature of the product
to be pumped and the ambient temperature.
Temperature class for explosive gas atmospheres
Temperature
class
Product temperature (in process
or cleaning)
Room temperature
T4
≤ 110 °C
-20 °C to +40 °C
T3
≤ 140 °C
-20 °C to +40 °C
Maximum surface temperature for explosive dust atmospheres
Maximum
surface
temperature
Product temperature (in process
or cleaning)
Room temperature
T125 °C
≤ 125 °C
-20 °C to +40 °C
T200 °C
≤ 200 °C
-20 °C to +40 °C
4.2. TRANSPORT AND STORAGE
If the pump is not for immediate use, then it must be moved twice a week in order to prevent the
impeller, mechanical seal, and bearings from seizing up.
4.3. LOCATION
Place the pump near a drain on the floor. Note that the handling of inflammable fluids can create an area
classified as Zone 0 in the drain area and therefore all the appropriate safety indications must be observed.
II 2G Ex h IIB T4…T3 Gb
II 2D Ex h IIIB T125ºC…T200 oC Db
II 2G Ex h IIB T4…T3 Gb
II 2D Ex h IIIB T125ºC…T200 oC Db

(C) 2022/11 4. Installation 7
The motors used must be EC marked in accordance with Directive ATEX 2014/34/EU and with the
instructions of the manufacturer and the applicable national and local regulations.
When pumping inflammable or explosive liquids, a proper connection must be
used. Connect the parts of the assembly with the earth connections in order to
reduce the risk of static electricity.
Depending on the fluid to be pumped, high temperatures may be reached inside and around the pump:
Note that the surface temperature of the pump in normal operating conditions is
determined by the fluid it pumps. Please to see 4.1.1. point.
Air must be properly recirculated in order to cool the pump motor. Make sure there
is no other equipment or surfaces near the motor that may radiate additional heat
or affect the cooling of the motor. See the motor instructions manual.
4.4. PIPES
Before starting up the pump, make sure that the suction and discharge valves of
the pump are open.
Before closing the suction and discharge valves, make sure that the pump is
switched-off and has stopped.
When hot fluids are being pumped, pay attention to thermal dilation. In this case, use expansion washers
and pay special attention to avoid leaving the equipment electrically insulated (electrical equipotentiality)
from the rest of the assembly.
4.4.1. Shut-off valves
Use valves that are EC marked in accordance with the Directive ATEX 2014/34/EU
and in accordance with the manufacturer’s instructions and the applicable
national and local regulations.
4.4.2. Self-priming process
It must be remembered that, in this situations, potentially explosive atmospheres
can be created. Therefore, safe working conditions must be established (stopping
electrical equipment in the surrounding areas, restricting jobs with a naked flame,
welding, oxygen cutting, etc.)
Use valves and filters that are CE marked in accordance with the Directive ATEX
2014/34/EU and in accordance with the manufacturer's instructions and the
applicable national and local regulations.
4.4.3. Filters
When installing a filter in the air intake, a periodic inspection must be carried out
to ensure that it is not obstructed and is not causing the pump to work dry
4.5. ELECTRICAL INSTALLATION
Before connecting and electric motor to the system, check local regulations regarding electric safety and
standards EN 60204-1 and EN 60079-14. Also the motor manual. This motor should be Atex with adequate
protection for the working environment in which it must run.

8 4. Installation (C) 2022/11
Follow the motor manufacturer’s indications at all times.
Protection against motor overload, suitable for the motor’s nominal power must
also be installed.
If necessary, install a separate fan, bearing in mind the environment where it will operate (potentially
explosive atmosphere).
4.5.1. Automatic circuit-breaker
It must be remember that these automatic circuit-breakers have to work in a potentially explosive
atmosphere. Therefore, the circuit-breakers selected must bear the CE ATEX mark in accordance with
Directive 2014/34/EU
The operating equipment must comply with the applicable electrical safety
regulations and the instructions of the ATEX motor manufacturer.
4.5.2. Connection
Before connecting the motor the mains, read the manufacturer’s instructions manual. This motor must be
an ATEX motor with a protection level corresponding to the working environment where it will operate.
Protection against motor overload, suitable for the motor’s nominal power, must
also be installed.
The electrical equipment, terminals and components of the control systems may
still contain electric current when switched off. Contact may place the operator or
installation in danger or cause irreparable damage to the equipment. The
supplier's instructions for the safe opening of the motor should be followed at all
times.
Permits to work will be required to handle the equipment in potentially explosive
atmospheres. It is strongly recommended that this type of work be carried out in
non-classified atmospheres (i.e. there must not be an explosive atmosphere in the
location of the pump when it is being handled).
4.6. COOLED MECHANICAL SEAL
•Check the level of supply reserve.
•Check the temperature of the washing liquid.
•Check the condition of the washing liquid by inspecting it: in the sealing system that must be
repaired.
Frequent contamination is indicative of an unacceptable leak in the sealing system that must be repaired.
4.6.1. Single mechanical seal option
If the single mechanical seal is working in dry conditions, its maximum operating temperature may be
exceeded. This is why a simple mechanical seal must not operate under any circumstances in dry conditions.
•Regularly check that the single mechanical seal is functioning correctly.
•Check that the hydraulic part of the pump is always free of liquid during operation.
•Avoid pumping fluids that contain large amounts of gas

(C) 2022/11 4. Installation 9
The end user must ensure that there is a constant flow to the pump by using a flow detector, flowmeter, or
any other device in the pump intake, in order to prevent any increase in the surface temperature. Another
option is to fit a temperature probe in the mechanical seal.
4.6.2. Double mechanical seal option
•Check the level of supply.
•Check the temperature of the washing liquid.
•Check the pressure.
Caution: the washing liquid must always be under pressure when the pump is
operating.
•Check the condition of the washing liquid: Change the washing liquid if it has been
contaminated by another liquid.
Contamination of the liquid means that the pump is not functioning properly and it must be inspected. For
example, the sealing system may have leaks in the middle or be open due to insufficient backpressure of
the washing liquid.

10 4. Installation (C) 2022/11
5. Starting up
Before starting up, those responsible must be duly informed about the pump and
the safety instructions. This Annex, along with the instructions manual, will be
available to staff at all times.
In order to carry out any type of work in potentially explosive atmospheres, it is
necessary to adopt special safety measures such as permits to work.
5.1. STARTING UP
An explosive atmosphere may be formed during the start-up of the pump.
Therefore, permits to work will be required and these tasks must only be carried
out by qualified or trained personnel.
5.1.1. Checks before starting up the pump
Before starting up the pump, make sure that the suction and discharge valves of
the pump are open.
If there is a risk of operation in dry conditions, it is recommended that a flow-detection probe be installed
in the pump intake, or any other device preventing the pump from operating in dry conditions.
In the case of the (non-cooled) single seal option, the pump and the area around the seal must be covered
by the pump fluid before start up.
If the fluids that have to be drained are inflammable, the possible formation of
potentially explosive atmospheres must be considered; permits to work should
therefore be issued.

(C) 2022/11 6. Maintenance 11
6. Maintenance
6.1. GENERAL INFORMATION
The maintenance work of any equipment intended for use in potentially explosive
atmospheres can only be carried out with the appropriate permit to work, as
specified by ATEX 2014/34/UE.
Maintenance jobs can only be done by qualified personnel. Use the proper clothing.
Ensure that staff read the entire instructions manual and this Annex and, in
particular, indicate those chapters that refer to the job to be done.
6.1.1. Check mechanical seals
Check areas 1 and 21 daily. Check areas 2 and 22 weekly.
For a double mechanical seal:
-A control of temperature, level and barrier liquid pressure are essential and it is advisable to install
an automatic device that stops the pump when the temperature of the liquid exceeds the
temperature class in the classified area or when the liquid level is not what it should be.
The instructions of the mechanical seal manufacturer, and in particular those
concerning the temperature probe, must be followed at all times.
6.1.2. Environment
Try to ensure that the working environment is clean, for some parts are very fragile and others have a low
tolerance level.
The possibility of the presence of an explosive atmosphere must also be considered.
Therefore, these jobs can only be carried out after the appropriate work permit has been
issued
6.1.3. Tools
Use tools that are technically suitable for maintenance and repair jobs. If the area is not unclassified, all the
tools must be flameproof and safe-work permits must be issued the job is started.
6.1.4. Safety
Apart from the safety measures indicated in the manual given by the motor manufacturer for safely opening
it must also be followed.
6.1.5. Conservation
The possible existence of formation of explosive atmospheres must be taken into
account when emptying the pump, so safe work permits must be issued and any
possible source of ignition in the area surrounding the equipment or the work
place must be eliminated
6.2. CLEANING
The user is responsible for establishing a cleaning or disinfection plan that suits their needs. This plan should
take into account all applicable laws, regulations and standards related to protection of public health and
safety in the use and disposal of chemical products.

12 6. Maintenance (C) 2022/11
6.2.1. Outside cleaning
Do not spray the hot parts of the pump with water, since some parts might crack
and pump fluid could spill into the environment, thereby generating a potentially
explosive atmosphere.
The outside of the equipment must be cleaned in order to avoid the excessive
build-up of combustible or explosive dust on the outer Surface of the equipment.
The accumulated dust must never exceed 2 mm
6.3. SPARE PARTS
When ordering spare parts for a pump operating within a classified area, it must be expressly stated that
the pump is an ATEX pump and quote the manufacture number.
Otherwise, Inoxpa cannot ensure that the pump operates with parts that are suitable for the classified.
6.4. PAINTWORK
If rust appears on the painted surface of the lantern, the affected area must be repainted in order to avoid
the risk of any abnormalities. The material the lantern is made of is an alloy with less than 7,5% of light
materials.
6.5. DISASSEMBLY / ASSEMBLY OF THE PUMP
Improper assembly or disassembly of the equipment can impair operation of the
pump, cause high repair costs, long downtime and even render the protective
system of the equipment ineffectual.
INOXPA disclaims any liability for accidents or damage caused by failure to observe the instructions of the
manual and of this Annex.
6.5.1. Preparations
As well as the instructions given in the manual, the possibility of the presence of an explosive atmosphere
must also be considered. Therefore, these Jobs can only be carried out after the safe work permits have
been issued.
6.5.2. Tools
Use tools that are technically suitable for maintenance and repair jobs. If the area is not unclassified, all the
tools must be flameproof and safe-work permits must be issued.
6.5.3. Cleaning
Before proceeding to dismantle the pump, both the outside and the inside of the pump must be cleaned.
The possibility of the presence or development of an explosive atmosphere must also be considered.
Therefore, these jobs can only be carried out after the appropriate work permits have been issued.
6.5.4. Disconnection
The possibility of the presence or development of an explosive atmosphere must
be considered. Therefore, the appropriate work permits must be bee issued and
any possible ignition source in the areas surrounding the equipment must be
eliminated

(C) 2022/11 6. Maintenance 13
6.5.5. Electrical safety
In addition to the safety instructions given in the manual, the indications given by the motor manufacturer
must be followed at all times in order to open the motor safely or lock it in.
In addition to the instructions included in the manual, you must:
Always observe the indications of the manufacturer of the motor and the
mechanical seal if this has a temperature probe.
6.6. ASSEMBLY / DISASSEMBLY PUMP CASING
CAUTION! Fluid might spill out when the pump casing is removed and a
potentially explosive atmosphere might develop.

14 7. Technical Specifications (C) 2022/11
7. Technical Specifications
Please to see 4.1.1. point to the maximum temperature values.
Materials
Parts in contact with the product AISI 316L (1.4404)
Other Steel parts AISI 304L (1.4306)
Gaskets in contact with the product EPDM (standard)
FPM (other materials available upon request)
Other gaskets NBR
Exterior surface finish Matt
Interior surface finish Bright polished, except the electropolish impeller
Mechanical seal
Type Internal single, balanced (standard)
Material of rotating part Silicon carbide (SiC) (standard)
Material of stationary part Graphite (C) (standard)
Silicon carbide (SiC)
Gasket material EPDM (standard)
FPM
Water consumption (quench mec. seal) 0,25 to 0,6 l/min
Pressure (quench mech. seal) from atmospheric to 100 kPa (1 bar)
If the single mechanical seal is working in dry conditions, its maximum operating temperature may be
exceeded. This is why a simple mechanical seal must not operate under any circumstances in dry
conditions.
-Regularly check that the single mechanical seal is functioning correctly.
-Check that the hydraulic part of the pump is always free of liquid during operation.
-Avoid pumping fluids that contain large amounts of gas.
The client must use a flow meter, flow detector or any other safety device, to
ensure that there is a constant flow to the pump and prevent it from operating in
dry conditions. Another option is to fit a temperature probe in the mechanical seal.
a. Double mechanical seal option, balanced. Must be protected by controlling the washing
liquid.
-Check the level of supply reserve.
-Check the temperature of the washing liquid
-Check the pressure
¡Caution! The washing liquid must always be under pressure when the pump is
operating.
-Check the condition of the washing liquid: Change the washing liquid if it has been
contaminated by another liquid. Contamination of the liquid means that the pump is not
functioning properly and it must be inspected. For example, the sealing system may have
leaks in the middle or be open due to insufficient backpressure of the washing liquid.

(C) 2022/11 7. Technical Specifications 15
b. Simple mechanical seal + thermosensor, balanced. The instructions of the mechanical seal
manufacturer, and in particular those concerning the temperature probe, must be followed at all
times.

16 7. Technical Specifications (C) 2022/11
NOTAS

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