INOXPA HLR Ex Manual

INSTALLATION, SERVICE AND MAINTENANCE
INSTRUCTIONS
ANNEX FOR CE ATEX REGISTERED EQUIPMENT UNDER DIRECTIVE
2014/34/UE:
HLR Ex Lobe Rotor Pump
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
01.504.30.01EN
(C) 2022/11

01.504.30.04EN
(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
LOBE PUMP
Designation
HLR
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 021395/18 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.
LIABILITY FOR ATEX CERTIFICATION
If INOXPA, S.A.U. supplies a bare shaft pump, the marking of the certification for protection against
explosions shall only relate to the pump. All mounted devices must carry separate certification, supplied by
the manufacturer of the device and having at least the same or a greater level of protection than the
pump. The entire assembly must be certified separately by the manufacturer of the device and it must
carry a name plate different to that of the pump.
If INOXPA, S.A.U. supplies the entire assembly, the certification against explosions and the mark on the
name plate, affixed to the pump itself, shall relate to this specific assembly.

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. Coupling........................................................................................................................... 7
4.5. Pipes................................................................................................................................ 7
4.6. Safety valve...................................................................................................................... 7
4.7. Electrical installation .......................................................................................................... 8
4.8. Cooled mechanical seal...................................................................................................... 9
5. STARTING UP ............................................................................................................................11
5.1. Starting up ......................................................................................................................11
5.2. Bypass ............................................................................................................................11
6. MAINTENANCE...........................................................................................................................12
6.1. General information..........................................................................................................12
6.2. Cleaning ..........................................................................................................................13
6.3. Spare parts......................................................................................................................13
6.4. Paintwork ........................................................................................................................13
6.5. Disassembly / assembly of the pump .................................................................................14
6.6. Assembly / disassembly pump casing .................................................................................14
7. TECHNICAL SPECIFICATIONS......................................................................................................15
7.1. Single mechanical seal ......................................................................................................15
7.2. Cooled mechanical seal.....................................................................................................15
7.3. Double mechanical seal.....................................................................................................15
7.4. O-ring / ptfe lip seal / double lip seal / packing gland ..........................................................16
7.5. Heating chambers ............................................................................................................16
7.6. Materials .........................................................................................................................16
7.7. Torque ............................................................................................................................16

(C) 2022/11 3. General information 5
3. General information
3.1. DESCRIPTION
For HLR Ex series lobe rotor pumps, the drives, used by the person in charge of the assembly, must be
suitable for working 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.)
The drives to be used by the person in charge of assembly must be EC marked, in
accordance with ATEX directive 2014/34/EU, the instructions of the
manufacturer of said drives, and local and national regulations.
This equipment must comply with the regulations in force and, in particular, with
local regulations, decrees, legal provisions, laws, directives, circulars in
application, standards, working rules, and any other document relating to their
site of installation.

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.
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.
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. Therefore the range of temperatures in section
4.1.1 must be taken into account.
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.
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

(C) 2022/11 4. Installation 7
4.4. COUPLING
If the pump is installed with the corresponding mount, connector plate, and drive, electrical continuity
must be ensured between the different components a proper earth connection.
4.5. 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.
If a filter is installed in the suctions inlet, this must be in conformity with Atex
regulation 2014/34/EU. A periodic inspection must be performed to ensure that
it is not obstructed and is not causing the pump to run dry.
4.5.1. 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.
4.5.2. Pressure tank
For a double mechanical seal pressure tank, it is advisable to ensure that the
tank is always pressurised between 1,5 and 2 bar over the operating pressure of
the pump while it is in operation, including when it is turned on and shut off.
Always follow the manufacturer’s instructions for the Atex mechanical seal.
4.6. SAFETY VALVE
If the client wishes to provide the pumps with an external safety valve or bypass,
this valve must be in compliance with Atex regulation 2014/34/EU, and the
bypass must be provided with electrical continuity with the rest of the
equipment.
4.6.1. For pumps with integrated by-pass
As the pressure relief valve is integrated into the pump housing, the fluid is recirculated directly from the
discharge outlet to the suction inlet. The short length of the recirculation circuit means that, when the pump
is operating with the discharge outlet obstructed, the bypass (and therefore the pump housing) can very
quickly reach very high temperatures according to the operating conditions of the pump.
The presence of a shut-off device triggered by high temperature in the location established for this purpose,
is essential for complying with the temperature classification. As the disconnection threshold is determined
by temperature classification (see following table), the shut-off device cuts supply from the pump and
controls any safety measures necessary in the installation if it exceeds the threshold of the maximum surface
temperature corresponding to temperature classification T (the wiring enabling the device to manage the
system shut-off must be implemented according to the relevant rules).

8 4. Installation (C) 2022/11
This equipment must comply with the standards in force and, in particular, the standards for electrical
materials in explosive atmospheres and/or standard EN ISO 80079-37:2016 relating to protection of non-
electrical equipment in explosive atmospheres through the control of ignition sources.
4.6.2. For pumps without integrated bypass
The pump must be protected from over-pressures. It is particularly recommended to install a pressure switch
to cut the supply of the pump in the event of overpressure. For safety reasons, the cut-off pressure must
be less than the maximum delivery pressure of the pump and less than the lowest pressure permitted by
the circuit components.
This equipment must comply with the standards in force and, in particular, the standards for electrical
materials in explosive atmospheres and/or standard EN ISO 80079-37:2016 relating to protection of non-
electrical equipment in explosive atmospheres through the control of ignition sources.
It is also possible to mount an external b-pass to the pump, with return to the tank. As with the integrated
bypasses of INOXPA pumps, it is essential to have a shut-off device triggered by high temperature at the
location of the bypass valve to control any heating caused by fluid recirculation. This shut-off device cuts
supply from the pump and controls any safety measures necessary in the installation if it exceeds the
threshold of the maximum surface temperature corresponding to temperature classification T (the wiring
enabling the device to manage the system shut-off must be implemented according to the relevant rules).
This equipment must comply with the standards in force and, in particular, the standards for electrical
materials in explosive atmospheres and/or standard EN ISO 80079-37:2016 relating to protection of non-
electrical equipment in explosive atmospheres through the control of ignition sources.
Caution: The shut-off device does not protect the pump during operation beyond its limits, but disconnects
itself when a malfunction could lead to the temperatures higher than what is permitted by the Atex area.
The settings for the shut-off device disconnection threshold are the end-user's responsibility. These must
be set according to the material temperature class. In the specific case in which the temperature of the
pumped-liquid flash point is less than the limit imposed by temperature classification of its material, the
shut-off device disconnection threshold must be adapted to ensure that the installation is protected.
4.7. 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.
Follow the motor manufacturer’s indications at all times.
The converter or gear motor must comply with the specifications given in Atex
regulation 2014/34/EU.
Consult at all times the converter or gear motor manual for correct assembling.
4.7.1. 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
Temperature
classification
Detection threshold of the shut-off device
T4 - T3
110ºC ± 5ºC - 140ºC ± 5ºC

(C) 2022/11 4. Installation 9
The operating equipment must comply with the applicable electrical safety
regulations and the instructions of the ATEX motor manufacturer.
4.7.2. 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.
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).
The turning direction must be set when the motor is disconnected from the
pump.
4.7.3. Bedplate
The bedplate must always have a cam for connecting it to earth. Ensure that the earth connection is
correctly fitted to the bedplate.
4.8. 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.
4.8.1. 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
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.
4.8.2. 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.

10 4. Installation (C) 2022/11
•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 5. Starting up 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.
5.2. BYPASS
In case the customer mounts an external bypass to the pump, the pressure relief valve shall also be Atex
Certified. If the pump is provided with an external bypass, follow the instructions specified in chapter 4.6
SAFETY VALVE

12 6. Maintenance (C) 2022/11
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. Lubrication
The gears and bearings are lubricated by means of an oil bath.
Check that the oil level is correct every week for zones 2 and 22, and every day
for zones 1 and 21. If not, add oil up to the required level. The first oil change
must be carried out after 150 hours of service. Following this, the oil must be
changed after every 2.500 hours of service or at least once a year under normal
operating conditions.

(C) 2022/11 6. Maintenance 13
The oil box should be filled up to the level in the centre of the sight-glass. NO
MORE AND NO LESS, as both an excess and a lack of oil can cause problems of
temperature increase. The following table shows the oil amounts to put into each
box.
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.
The possible presence or formation of explosive atmospheres must be taken into
account when emptying the pump; safe-work permits must therefore be issued
and all possible sources of ignition around the equipment or workplace must be
eliminated.
Start-up may create a potentially explosive atmosphere; you must therefore
obtain safe-work permits and only qualified and properly trained staff may
intervene.
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.
Under no circumstances should a painted surface of a thickness in excess of 2 mm be allowed.
TYPES
Oil amount in box (l)
HLR 0
0.3
HLR 1
0.5
HLR 2
0.75
HLR 3
1.75
HLR 4
4.5

14 6. Maintenance (C) 2022/11
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. 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.

(C) 2022/11 7. Technical Specifications 15
7. Technical Specifications
Temperature range. See section 4.1.1.
Therefore, the following limit values must be taken into account for the HLR Ex pump range:
Short rotor
Long rotor
Maximum flow rate
.............................................................................
52.13 m3/h
77.2 m3/h
Maximum speed
.............................................................................
750 rpm
750 rpm
The technical data to be taken into account for HLR Atex pumps are set out in the following table. All
other data can be found in the pump instructions manual.
nmax ≡ maximum working speed
Qth ≡ maximum flow rate at maximum speed
Vu ≡ peripheral speed
Vi ≡ maximum suction speed
7.1. SINGLE MECHANICAL SEAL
If the mechanical seal operates dry, the maximum temperature in the zone where it operates may be
exceeded. Therefore, a single mechanical seal must not operate dry under any circumstances.
For maintenance, see the supplier's instructions manual.
The end user must ensure that there is a constant flow to the pump by using a flow
detector, flow meter, or any other device in the pump suction, in order prevent an
increase in temperature on the surface area.
7.2. COOLED MECHANICAL SEAL
For maintenance, see the supplier's instructions manual.
Frequent contamination indicates an unacceptable leak in the sealing system which must be repaired.
7.3. DOUBLE MECHANICAL SEAL
For maintenance, see the supplier's instructions manual.
TYPE
nmax.
[rpm]
Qth
[m3/h]
Vu
[m/s]
Vi
[m/s]
HLR 0-20
750
0,95
1,88
1,34
HLR 0-25
750
1,35
1,88
0,95
HLR 1-25
750
4,48
2,72
3,16
HLR 1-40
750
6,27
2,72
1,80
HLR 2-40
600
8,42
2,75
2,42
HLR 2-50
600
10,83
2,75
1,68
HLR 3-50
500
20,31
3,44
3,14
HLR 3-80
500
28,58
3,44
1,94
HLR 4-100
400
52,13
3,55
1,94
HLR 4-150
400
77,2
3,55
1,21

16 7. Technical Specifications (C) 2022/11
Caution! The flushing liquid must always be under pressure when the pump is operating.
Contamination of the liquid indicates incorrect operation which must be checked. For example, the sealing
system may contain leaks in the side or be open due to insufficient back-pressure of the washing liquid.
7.4. O-RING / PTFE LIP SEAL / DOUBLE LIP SEAL / PACKING GLAND
It is FORBIDDEN to use these options for Atex pumps
7.5. HEATING CHAMBERS
Maximum temperature: see the maximum temperature value table
Maximum pressure: 4 bars (58 PSI)
7.6. MATERIALS
Maximum temperature for joints: see the maximum temperature value table
7.7. TORQUE
Maximum torque in the pump shaft
Support
(N.m)
HLR 0
17,5
HLR 1
26,5
HLR 2
54
HLR 3
200
HLR 4
600

NOTAS

NOTAS

NOTAS