Hawk XLT IEX Series User manual

INSTRUCTION MANUAL
Version 001-18
ORIGINAL INSTRUCTIONS
HIGH PRESSURE POSITIVE DISPLACEMENT PISTON PUMPS
SERIES XLT IEX –XLT HT IEX
LEUCO S.p.A
Via Pietro Colletta, 20
42124 Reggio Emilia (RE) –ITALY
Tel. [phone] Fax [phone]
This manual and associated information can be downloaded from the website: www.hawkspumps.com
This manual is an integral part of the product and should always be made available to any persons using it

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 2 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
INDEX
1GENERAL INFORMATION ........................................................................................................................................... 3
1.1 Structure of the Manual .................................................................................................................................... 3
1.1.1 Purpose and contents .................................................................................................................................. 3
1.1.2 Who the manual is for.................................................................................................................................. 3
1.1.3 Storage ......................................................................................................................................................... 4
1.1.4 Symbols used in the manual ........................................................................................................................ 4
1.2 Manufacturer..................................................................................................................................................... 4
1.3 Assistance Centres ............................................................................................................................................. 4
1.4 Certification and CE Marking –Declaration of Incorporation............................................................................ 5
1.5 Warranty............................................................................................................................................................ 6
2GENERAL DESCRIPTION.............................................................................................................................................. 7
2.1 Main parts.......................................................................................................................................................... 8
2.1.1 Layout dimensions.................................................................................................................................. 9
2.2 Operating Conditions ......................................................................................................................................... 9
2.3 Vibration ............................................................................................................................................................ 9
2.4 Noise .................................................................................................................................................................. 9
2.5 High temperatures........................................................................................................................................... 10
2.6 Stability ............................................................................................................................................................ 10
2.7 Pressurised fluids ............................................................................................................................................. 10
3SAFETY...................................................................................................................................................................... 11
3.1 General safety information.............................................................................................................................. 11
3.2 Residual risks.................................................................................................................................................... 11
3.3 Personal protection equipment....................................................................................................................... 12
3.4 Safe working procedures ................................................................................................................................. 12
3.4.1 Safety when using the pump ................................................................................................................ 12
3.4.2 Safety when using high pressure circuits.............................................................................................. 13
3.4.3 Rules of conduct regarding the use of high pressure lance.................................................................. 13
3.5 Safety during handling and lifting .................................................................................................................... 13
3.5.1 Description of the packing; unpacking and transport .......................................................................... 14
3.6 Safety during Maintenance Work .................................................................................................................... 14
3.7 Products used .................................................................................................................................................. 14
3.8 Specifications Plates ........................................................................................................................................ 15
3.9 First Aid ............................................................................................................................................................ 15
3.9.1 What to do if someone needs First Aid...................................................................................................... 16
3.9.2 Emergency phone call ................................................................................................................................ 16
3.9.3 Sprains and breaks ..................................................................................................................................... 16
3.9.4 Bleeding...................................................................................................................................................... 16
4DESIGNATED USE ..................................................................................................................................................... 17
4.1 Envisaged Use .................................................................................................................................................. 17
4.2 Prohibited Uses................................................................................................................................................ 17
5FITTING AND INSTALLATION .................................................................................................................................... 18
5.1 Setting-up by the Purchaser / Operator .......................................................................................................... 19
5.2 What to do before starting up the pump for the first time ............................................................................. 20
5.3 Long periods of downtime ............................................................................................................................... 20
5.4 Operating the pump ........................................................................................................................................ 20
6MAINTENANCE......................................................................................................................................................... 26
6.1 General maintenance ...................................................................................................................................... 26
7DIAGNOSTICS ........................................................................................................................................................... 28
7.1 Trouble Shooting.............................................................................................................................................. 28
8DISMANTLING AND DISPOSURE............................................................................................................................... 29
9SPARE PARTS ............................................................................................................................................................ 29
10 ANNEXES .................................................................................................................................................................. 29

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 3 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
1 GENERAL INFORMATION
1.1 Structure of the Manual
This manual is an integral part of the official documentation provided with the pump. It has been drafted by the Manufacturer in
order to provide the operating instructions and the criteria to be followed for the installation, use and maintenance of the pump,
referred to in the header.
Before choosing and/or using any LEUCO product, it is important that the purchaser clearly analyses all aspects regarding the
specific application thereof and carefully examines the information provided in the LEUCO technical and sales catalogues. As a
result of the numerous different conditions in which LEUCO products can be operated and/or applied, sole responsibility for
choosing the most suitable product lies with the purchaser, who must carry out all the relevant analyses and tests to ensure the
appropriate functional and safety specifications are complied with.
LEUCO reserves the right to make changes to the products and to this handbook without notice.
The purchaser must see to it that the pump is installed in accordance with the instructions contained in this manual and with the
laws and national and local regulations currently in force.
The Manufacturer declines any responsibility for damage of any kind caused by incorrect use, negligence, superficial application of
or failure to apply the safety concepts set out in this manual.
1.1.1 Purpose and contents
These instructions for use contain all the indications regarding the installation, use, maintenance, storage and all the stages in the
life cycle of the XLT IEX –XLT HT IEX high-pressure piston pumps. These instructions must be followed by the assembler/end user in
order to prevent the risk of causing effective ignition sources in potentially explosive atmospheres.
Before carrying out operations of any kind, qualified technicians and operators must read the instructions in this manual carefully.
Should any doubts arise on how to interpret the instructions correctly, contact LEUCO S.p.A. for clarification.
1.1.2 Who the manual is for
The instructions are for expert, suitably trained operators entrusted with installing the pump and carrying out ordinary
maintenance.
Purchaser
The person, entity or company that has purchased the pump and intends to use it for the purposes it was designed for. This may be
the assembler, if in possession of the necessary requisites.
User/Operator
An authorised person who possesses the requisites, skills and information necessary to use the pump, the machine or the plant the
pump is installed in, and to carry out ordinary maintenance work.
Ordinary/general maintenance
The set of operations required to keep the machine in good working order, to guarantee a longer working life and to maintain
security requisites constant. The frequency and methods of intervention are described by the Manufacturer in this manual. These
operations must be carried out by specialised staff, which may be the operators, as described above.
Extraordinary maintenance
The set of operations required to keep the machine in proper, efficient working order. These operations, required when
unexpected anomalies arise, must be carried out by specialised technicians only.
Installer/Assembler
An authorised technician in possession of the requisites and specific skills to carry out the tasks required for installing the pump
and/or similar machines and to carry out maintenance operations in a safe, automatic and risk-free manner.
Training
A necessary stage to provide operators with the knowledge necessary to carry out operations correctly and without risk.

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 4 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
Exposed person
Any person partially or fully inside a dangerous area.
1.1.3 Storage
The instruction manual must be stored in the immediate vicinity of the machine, in an appropriate container, protected from
liquids or anything else liable to affect legibility.
1.1.4 Symbols used in the manual
SYMBOL
MEANING
COMMENT
DANGER
Indicates a danger with potentially serious
risk for the user/assembler.
DANGER OF CRUSHING UPPER LIMBS
Indicates the risk of upper limbs being
crushed while positioning and handling
the pump.
DANGER OF MOVING MECHANICAL
PARTS
Indicates danger due to the presence of
mechanical parts in movement (e.g.
transmission shaft, reducers, etc..)
SYMBOL
MEANING
COMMENT
WARNING
SAFETY INFORMATION
Indicates a warning or a note on key
functions or useful information. Pay the
utmost attention to blocks of text marked
with these symbols.
CONSULTATION
Consult the Instructions before carrying
out a particular operation.
IMPORTANT ATEX WARNING
This symbol accompanies the notes that
must be complied with for safe use in a
potentially explosive atmosphere.
ADJUSTMENT/MAINTENANCE
For particular functions and/or
anomalies, a particular kind of
mechanical adjustment may be required.
1.2 Manufacturer
LEUCO S.p.A.
Via Colletta, 20 - 42124 Reggio Emilia (RE) - ITALY
1.3 Assistance Centres
For any needs regarding the use or maintenance of equipment, contact LEUCO S.p.A., or specialised staff authorised by the
Manufacturer.
For all requests for technical assistance, indicate the data on the ID plate of the pump and the type of anomaly detected.

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 5 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
1.4 Certification and CE Marking –Declaration of Incorporation
Hawk high-pressure piston pumps are suitable for use in a potentially explosive atmosphere, and have been designed and
constructed in accordance with Directive 2014/34/EU. The EC mark refers to this Directive, because in accordance with the
Machinery Directive 2006/42/EC, these pumps are classified as partly completed machinery and thus do not bear the EC mark.
This instruction manual complies with Annex I point 1.7.4 of the aforementioned Directive, as well as with the UNI 10893 standard
and the ISO/IEC 37 guide.
The list of Directives and the standards applied can be found in the Declaration of Incorporation in the attachments
(Attachment I) of this Manual.
Fac-simile

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 6 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
1.5 Warranty
Hawk products are guaranteed by LEUCO S.p.A. to be free of defects regarding the working and construction materials for a period of
(1) year from the date they leave the factory.
This warranty is limited to the repair and replacement of the parts or products that LEUCO S.p.A. has the exclusive faculty to consider
faulty as delivered. All products covered by this limited warranty shall be returned, freight prepaid, for inspection, repair and if
necessary replacement by the manufacturer.
The limited warranty established herein is the only one valid, over any other explicit or implicit warranty, including any warranty of
saleability or suitability for particular purposes; with this declaration, the manufacturer excludes and rejects any such warranties. The
repair or replacement of any faulty products shall be carried out solely in accordance with the methods set forth herein, and LEUCO
S.p.A. may not be held liable for any other losses, damage or expenses, including accidental and indirect damage that may be caused
directly or indirectly by the sale or use of these products.
The unauthorised use of spare parts not originally produced by LEUCO S.p.A. automatically outdates the warranty, which is subject to
the installation and operating functions specified here. No warranty extends beyond the terms described above.
All the pumps supplied by LEUCO have been carefully checked during production and subjected to testing cycles prior to dispatch.
In order to obtain maximum performance, avoid unpleasant incidents and maintain the warranty conditions valid, it is necessary to
ensure strict compliance with the procedures described in this booklet for proper assembly and initial start-up of the pump.
LEUCO S.p.A. declines all liability for any errors in the drafting of this manual.
No liability shall be accepted for any changes to the product or parts thereof that have not been agreed
upon with the Manufacturer, and such changes shall invalidate the warranty.

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 7 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
2 GENERAL DESCRIPTION
Hawk high-pressure piston pumps are positive displacement pumps. Hawk pumps are designed and built for pumping clean, fresh
water or water with a low percentage of commonly used detergents, up to a temperature of 65°C (XLT IEX series), up to a temperature
of 85°C (XLT HT IEX series).
The main parameters that determine your choice of Hawk pump are its volume, pressure, rotation speed and power consumption.
The volume is given in litres per minute and is directly proportional to the rotation speed.
The speed of rotation is given as revolutions per minute.
The pressure is given in bars and is the maximum pressure that the pump can reach.
The power consumption is shown in kW and is the absorption required for the maximum volume and pressure indicated.
When coupled with an electric motor, the power of the motor should be greater than the specification shown in the catalogue.
When coupled with a combustion engine, the power of the engine should be at least 30% more than the specification shown in the
catalogue.
The power consumed by the pump in KW is the product of:
Power = Volume (l/min) xPressure (bar) / 520.
LIST OF MODELS
SERIES XLT IEX
XLT3020IEXS - XLT3816IEXS - XLT1530IEX - XLT1830IEX - XLT2230IEX - XLT2520IEX - XLT2530IEX -
XLT2730IEX - XLT3020IEX - XLT3025IEX - XLT3325IEX - XLT3517IEX - XLT4014IEX - XLT4017IEX -
XLT4317IEX - XLT5015IEX - XLT5415IEX
SERIES XLT HT IEX
XLT1520HTIEX - XLT1820HTIEX - XLT2220HTIEX - XLT2520HTIEX - XLT2720HTIEX - XLT3020HTIEX -
XLT3320HTIEX - XLT4217HTIEX
Hawk pumps designed with an AISI 316 stainless steel manifold housing should be used for seawater
applications, for reverse osmosis, and for use in the food- chemical and pharmaceutical industries.
Hawk pumps were not designed for pumping potentially hazardous liquids (explosive, toxic and
flammable liquids). Contact the Manufacturer in case of any doubt.
Before choosing and/or using any LEUCO product, it is important you consider all issues associated with
the specific application and examine thoroughly the information contained in the technical product
catalogues provided by LEUCO S.p.A.
LEUCO products and the relative documents are subject to change at any time without notice.
Do not use Hawk pumps with different materials / fluids, with different motor coupling systems from
those described.
Contact the Manufacturer in case of any doubt.

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 8 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
2.1 Main parts
A - MANIFOLD HOUSING
B - PUMP BODY
C - OIL LEVEL CAP
D - CRANKSHAFT
E - CONNECTING ROD
F - PLUNGER (relative components)
G - OIL LEVEL INDICATOR
H - DELIVERY VALVE
I –SUCTION VALVE
More details on the parts can be found in the exploded views attached to this manual (ATTACHMENT III).
The pumping action is provided by a series of plungers connected to the drive shaft by connecting rods. During motion, the
plungers run axially inside the manifold housing where the suction and delivery lines are fitted with valves that enable the liquid to
pass in only one direction.

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 9 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
2.1.1 Layout dimensions
The layout is attached to this manual (ATTACHMENT II). A summary of the main dimensional specifications follows:
XLT IEX SERIES
Length
341.5 mm
Depth
263 mm
Height
168.2 mm
Weight
17.9 kg
Capacity
1.2 l
XLT HT IEX SERIES
Length
341.5 mm
Depth
263 mm
Height
168.2 mm
Weight
17.9 kg
Capacity
1.2 l
Detailed technical specifications for each range or series, with the associated product versions, are provided in ATTACHMENT II at
the end of this document.
2.2 Operating Conditions
The Hawk pumps described in this manual were designed and built to operate in the presence of a potentially explosive
atmosphere.
The operating conditions are listed on the specifications plate (see example in subsection 3.8).
Some conditions are listed below.
Parameter
Tolerated values
Room temperature –XLT IEX Series
from -10°C to +50°C
Room temperature –XLT HT IEX Series
from -10°C to +40°C
Storage temperature
from 0°C to +50°C
Humidity
from 20% to 80%
Max fluid temperature –XLT IEX Series
+65°C
Max fluid temperature –XLT HT IEX Series
+85°C
2.3 Vibration
Provided the procedures for installation and assembly contained in this document are carried out correctly, Hawk pumps will not
generate a level of vibration that could lead to associated risks in conditions of normal use. Furthermore, during pump operation,
no operator contact is required as the pumps are fitted onto a larger machine/plant that incorporates them.
2.4 Noise
The equipment was designed and built so that noise is reduced at source, as far as this is compatible with its intended use and
operation.
Pumps must only be used in the authorised areas for the types of group and category that the pumps
belong to.
The person in charge of assembly / end user must control that the information on the pump’s
specifications plate is compatible with the features of the area (machine) where it will be fitted.
The person in charge of assembly / end user must control the compatibility of the pump’s temperature
class with the type of inflammable substances present in the explosive atmosphere.

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 10 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
The level of noise measured is less than the minimum level allowed by current legislation.
2.5 High temperatures
Mechanical parts are lubricated to prevent the possibility of overheating due to friction over a long period of time. The choice of
lubricating oil, indicated later in this manual, complies with the Atex classification of the pumps. Furthermore, if the normal
maintenance procedures are followed, this should not represent a risk.
Machine operators should use appropriate safety equipment provided, such as gloves and overalls.
2.6 Stability
The XLT IEX –XLTI HT IEX series of pumps are supplied with the necessary instructions to guarantee a stable and safe assembly in
the machine/system that will incorporate them. The person in charge of their assembly/operation must follow and comply with
these instructions.
It was designed and built to ensure it does not present any form of risk in terms of its stability in conditions of normal use.
More information in section 5: “Installation”
2.7 Pressurised fluids
The pumps described in this manual are built with suitable materials to ensure they will tolerate the envisaged operating
pressures. They are also fitted with all the necessary parts (caps, valves, plungers, etc..) to ensure correct operation and
circulation of the envisaged fluids (water and lubricating oil). The transmission lubricating products in the pump body are
necessary to safeguard correct operation by keeping the mechanical parts lubricated.

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 11 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
3 SAFETY
3.1 General safety information
Hawk pumps were designed to be safe for use in their intended application, provided they are commissioned (incorporated), used
and maintained as instructed in this operating and maintenance manual.
The machine operator and other personnel must read and be sure they have understood the instructions provided in the manual,
as well as the final application’s data, before installing and using the pumps.
The equipment must not be altered or tampered with: this will render null and void any liability of the
manufacturer as regards the correct operation or any damage caused by the product.
Before using the equipment, make sure that any safety hazard has been eliminated.
It is also vital that machine operators comply with the safety information below:
Do not attempt to remove or alter any pump parts, unless instructed and as described in this manual.
Internal inspections, modifications and repairs may only be carried out by trained, technical personnel with prior
authorisation from the Manufacturer.
Do not allow unauthorised personnel to do any work on the equipment.
Do not wear rings, a wristwatch, jewellery, loose garments or items such as ties or scarves, torn garments,
unbuttoned jackets or shirts with an open zipper that could become fast in moving machine parts.
Wear personal protection equipment as envisaged in this manual in line with the work to be carried out.
Make sure all the instructions described in the section on Maintenance are carried out on a regular basis.
Stop using the equipment immediately in case of any anomaly or fault that could jeopardise its correct operation
and safety.
Notify the person in charge of Maintenance in case of any operating malfunction.
Make sure that any safety guards or other devices for your protection are in place and that all safety devices are
working properly (pump guard and safety devices on the machine/system that it is a part of).
Check that the direction of motor rotation matches the pump rotation when starting it up for the first time or after
any maintenance work on the parts involved.
Check if there are any other safety instructions that must be followed in the Operating and Maintenance
Manual for the machine where the pump is fitted.
3.2 Residual risks
This machine was designed and built with the intention of eliminating any risks associated with its use.
The residual risks are specified below:

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 12 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
a) Crushing:
Handling and positioning the pump may bring the risk of crushing the upper limbs or hands or feet. Pay particular attention when
undertaking these actions. It is compulsory to wear the personal protective equipment provided (work gloves and boots) and to
comply with all the procedures designed to safeguard the correct completion of the operating cycle.
b) Heat-related hazards:
The pump can reach high temperatures during operation depending on the temperature of the pumped liquid. As a result, the
person in charge of the installation must bear this in mind and provide appropriate safety devices and warning signs for personnel.
3.3 Personal protection equipment
Failure to use the personal protective equipment specified in this section will expose the machine
operators to danger.
Employers are required to provide personal protective equipment to the operators using the machine
referred to in this manual.
The operators using the equipment must wear the following personal protective equipment, in line with the work being carried
out:
Personal protective equipment against the risk of cuts, bruises and high temperatures (max 85 °C)
Work boots
Safety goggles or glasses (if necessary)
The Employer may decide to use additional safety equipment after assessing any risks and considering any changes made to the
production processes.
3.4 Safe working procedures
To reduce the consequences of the hazards described in the section above, operators must comply with the following instructions:
Wear the personal protective equipment referred to in section 3.3;
Monitor areas where any hazard is present, do not start a test cycle if there are any persons located within the
hazardous area or in the immediate vicinity who are not involved in the job to be undertaken. Release the controls
immediately should any unauthorised persons enter the hazardous area when work is underway.
3.4.1 Safety when using the pump
The area and environment that the high pressure system operates in must be clearly signposted and prohibited to unauthorised
personnel. The area should also be restricted and defined. The staff responsible for carrying out the work must first undergo
workplace conduct training as well as training on the risks arising from high pressure system damages or defects. Prior to starting
up the system, the operator or operators are required to check:
that the system has the correct power supply;
that the electrical parts are correctly and adequately protected and work efficiently;
that the high pressure hoses and hose fittings do not exhibit signs of abrasion or excessive wear.
Any defect, damage or reasonable doubt that might arise before or during the operation must be reported and verified by qualified
staff. Should this happen, the system must be stopped immediately and the pressure brought down to zero.

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 13 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
3.4.2 Safety when using high pressure circuits
Here below are some basic indications regarding the high pressure circuit where the pump can be installed.
High pressure circuits should always be fitted with a safety or pressure relief valve.
Components of the high pressure circuits, particularly those that mainly operate outdoors, must be imperviousness to weather
conditions such as rain, frost or heat. All electrical parts should have adequate protection against direct or indirect sprays of water
and be suitable for use in wet environments.
High pressure hoses must be sized in accordance with the maximum operating pressure of the circuit and always within the field of
operation specified by the hose manufacturer. These precautions should also be respected for all the components found within
high pressure circuits. The ends of the high pressure hoses should be sheathed or, in any event, secured to a structure in order to
prevent dangerous whiplash in the event of a blast or a rupture in the connections.
Lastly, appropriately sized crankcases must be provided in order to protect the rotating component parts for the motion
transmission (flexible couplings and universal joints, belts, pulleys, etc.).
Check if there are any other safety instructions that must be followed in the Operating and Maintenance
Manual for the machine where the pump is fitted.
3.4.3 Rules of conduct regarding the use of high pressure lance
Here below are some basic indications regarding the use of the pump with high pressure lance equipment.
Those who operate high pressure nozzles must always put their own safety - as well as the safety of third parties likely to be
affected by their actions - before any other assessment or action in respect of the situation. Their work must always be guided by
common sense and an awareness of responsibility and precautions.
The operator must always acquire appropriate personal protective equipment (helmet with protective visor, waterproof overalls
and rubber boots) that guarantee good grip and stability on the ground in wet conditions.
Adequate clothing is effective against splashes of water, but cannot withstand the direct impact of water jets or splashes at close
range. In these circumstances, additional protection is recommended.
It is also desirable to have the operators work in teams of at least two people in order that they may provide mutual assistance in
case of need or danger, and have them organize an appropriate rotation that will provide cover in the event of long and tiring
shifts.
The area affected by the water jet must be prohibited and free from objects which, if hit by the jet, might be damaged or projected
elsewhere.
The jet should always be aimed in the direction of the workspace, including during preliminary or trial operations.
Attention must always be paid to the trajectory of debris removed from the jet. If necessary, anything that might be exposed to the
jet should be given adequate protection.
The operator should not be distracted for any reason while carrying out his or her work. Those wishing to enter the workspace
must wait for the operator to suspend work on his or her own initiative and make their presence immediately known.
Team members must always be aware of each other’s intentions in order to avoid potentially dangerous situations.
The system must never be started-up and pressurized before each team member is at their own station and the operator has
aimed the jet into the workspace.
Check if there are any other safety instructions that must be followed in the Operating and Maintenance
Manual for the machine where the pump is fitted.
3.5 Safety during handling and lifting
Before starting, make sure the area designated for the work is organised so that the materials can be
lifted and moved safely.
The unloading, loading, handling and lifting must be carried out by authorised, qualified personnel who
have completed specific professional training.
People who are not involved in the handling and lifting work must remain at a safe distance throughout
the operation.

Instructions Manual
High-pressure piston pumps
XLT IEX –XLT HT IEX series
Cod. doc. M.I.XLTIEX-XLTHTIEX
Rev. 0
Page 14 of 32
This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
All the lifting devices used, including any accessories (hooks, cables, chains) and items used for transport,
must have a suitable load-bearing capacity and must be controlled regularly according to current
legislation.
3.5.1 Description of the packing; unpacking and transport
The packing materials used to contain the XLT IEX –XLT HT IEX series of Hawk pumps was designed specifically to prevent damage
due to impact or vibration during transport or handling.
Each pump is packed individually, wrapped in a sort of moulded, protective case that has the same shape as the pump. Any other
parts are packed separately.
The packing cases may be supplied on a pallet in order to facilitate lifting and handling depending on the amount of goods to be
shipped and their final destination.
When unpacking the products, check the packing is intact and the number of parts is correct. If you note any discrepancy or
damage, please contact your dealer or the Manufacturer directly to agree on the correct course of action.
Dispose of the packing material correctly according to current legal standards.
Hawk pumps may be shipped using various modes of transport depending on the final destination (by road, rail, sea or air).
The packing materials should be anchored properly to the vehicle used for transport to prevent uncontrolled movement.
Failure to comply with the following instructions may result in situations of serious danger.
Manual handling of loads must comply with ISO 11228-1, or any applicable national legislation.
3.6 Safety during Maintenance Work
You must comply with the following instructions when carrying out any maintenance or repair work:
Depressurise the water system and disconnect the pump from all power sources before starting any
maintenance or repair work.
Before starting work, hang a "MACHINE UNDERGOING MAINTENANCE" sign in a prominent position on the
machine/system where the pump is fitted;
Do not use solvents or inflammable products or materials for cleaning that could create electrostatic charge
Be careful not to spill any oil or lubricant grease
After finishing the job, replace any safety guards and covers that were removed or opened and secure them properly.
Maintenance/repairs may only be carried out by qualified technical staff.
3.7 Products used
All the products used for the normal operation of the equipment, such as oils, lubricants and cleaning products, must be used as
instructed in the safety datasheets provided by the manufacturer.
The oil used for the Hawk XLT IEX –XLT HT IEX series of pumps is: SAE 10/40W.
Dispose of spent oil correctly according to current legislation.
Do not use Hawk pumps with different product from those described.
Contact the Manufacturer in case of any doubt.

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Cod. doc. M.I.XLTIEX-XLTHTIEX
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This Manual is the property of the Manufacturer; any reproduction in any form, even partial, is prohibited.
3.8 Specifications Plates
The danger, caution and obligation signs illustrated in this manual are placed near the equipment.
An exact description of the pump, model, serial number and specifications will facilitate a rapid and correct response by service
personnel (where applicable).
The identification data is provided on the specifications plate fitted on the machine, as illustrated below.
It is prohibited to remove (or move) any type of specifications plate and/or label on the machine
containing information and/or warnings.
FACSIMILE
Specification plate on the machine
Additional signs on the machine
3.9 First Aid
Some standard First Aid procedures are indicated below that could be used should an injury occur as a result of using the pump or
the machine/system incorporating it.
They may be useful for machine operators who are involved in an emergency when handling the equipment at any time (during
transport, installation, use, maintenance, adjustment, etc.) or may be needed by other workers who are in the immediate vicinity
of the machine.
The yellow sign is
near the plug, at
the top of the
pump body.
*la targhetta sul
tappo è del colore
del tappo stesso,
che può variare a
seconda della
pompa.
The red sign is
found near the
transmission shaft
and is translated
into English. This
is the original
version in Italian.

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3.9.1 What to do if someone needs First Aid
a) call for help (emergency services);
b) assess the situation of the injured person and check their vital signs;
c) stop any bleeding;
d) protect any wounds or burns;
e) ensure the injured person is not at risk of further injury;
f) do not take any initiative, such as giving the injured person something to drink, moving him, attempting to treat a sprain
or fracture etc, as this may do more harm than good.
3.9.2 Emergency phone call
First aid is most effective when professional help is able to reach the injured person as soon as possible.
Therefore, it is important that the person who arrives on the scene first, calls the emergency services without delay and indicates
the following clearly:
-the address of the scene of the accident (or illness);
-the number of injured (or ill) people;
-the possible cause of the event;
-the vital signs of the injured person; specify if he or she is conscious and is breathing normally.
It is always advisable to state at the end of the call:
your own name and a telephone number where you can be reached;
someone should wait outside the company for the emergency services to arrive (for example at the porter’s office)
Calling the emergency services is top priority. Follow any instructions you receive from the emergency staff to ensure the injured
person gets the best possible assistance.
3.9.3 Sprains and breaks
Treating sprains and breaks:
immobilise the affected limb in the same position it is in after the trauma using a splint or bandage and trying to reduce the pain
felt by the injured person but do not attempt any dangerous manoeuvres. Apply an ice pack or other similar system.
If the broken bone is exposed, cover the injury with sterile gauze, after applying compression to the specific points to stop bleeding.
Bruises, crushing:
If the extremities of a upper or lower limb (fingers, hands, feet, etc.) have been bruised and/or crushed, first hold the injured part
under (cold) running water and then apply an ice pack; check if there are any cuts/bleeding and disinfect the affected area, if
necessary.
3.9.4 Bleeding
Stop any bleeding by applying pressure directly on the bleeding area using a sterile gauze pad, raise the limb and apply a tourniquet
upstream to the bleeding
Treating superficial wounds:
expose and wash the wound with care to clean it, disinfect it with saline solution and cover with sterile gauze before bandaging;
make sure you do not wrap the bandage too tightly and stop circulation
Treating deep wounds:
protecting yourself from any risk of infection is a priority so wear gloves and a face mask to avoid spray; press directly down on the
cut or other pressure points until the bleeding stops or the ambulance arrives; call the emergency services (the number varies from
country to country) and inform them you are trying to stop arterial bleeding.
You should only attempt to treat the injury after the bleeding has stopped.
Do NOT use cotton-wool, denatured alcohol or antibiotic powder to disinfect a wound.
Always wear surgical gloves for protection against bodily fluids.

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High-pressure piston pumps
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4 DESIGNATED USE
4.1 Envisaged Use
The XLT IEX –XLT HT IEX series of Hawk pumps must not be used for any other purpose that those described in these instructions
under any circumstances. Strict compliance and conformity with the operating conditions, repairs and maintenance as specified by
the Manufacturer represent essential elements that are part of the designed use.
The Hawk pumps described in these instructions were designed and built to be incorporated into a machine intended for pumping
the listed fluids at high pressure (high pressure cleaner). Their use must also be consistent with their technical specifications
(subsection 2.1.1), without being altered, unless agreed, or used for improper purposes.
Only trained, qualified personnel, who have read and understood the information provided in this
manual, are authorised to use the pump.
Do not start up the pump unless the machine incorporating it has been declared compliant with current
applicable legal standards (Directive 2006/42/CE and Directive 2014/34/UE).
4.2 Prohibited Uses
The equipment must not be used:
By any other persons than those specified in subsection 1.1.2
For any other use than those specified in section 2 and subsection 4.1
In any other operating conditions than those indicated in subsection 2.2
Mounted onto any other machine than those specified in subsection 4.1
For liquids that are inflammable, toxic, corrosive or with an unsuitable density or at temperatures above those specified
in the technical specifications listed in this document or on the specifications plate
For different fluids from those listed in Chapter 2
For potable water piping systems
For food use
For pharmaceuticals
The Manufacturer reserves the right to review the terms of guarantee applying to the equipment in case
of any other use of the equipment than those mentioned above.

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5 FITTING AND INSTALLATION
Read this section with due care and attention before attempting to install the machine.
Incorrect installation of your pumping system may cause injuries to people and damage to property. So, it
is essential to comply with all instructions listed below.
It is important to work in a clean environment when installing the machine.
Pumps must be installed by direct coupling to the motor, which must be selected specifically among ATEX-certified products,
compatibly with the pump certification..
You must use a suitable elastic coupling joint in case of direct coupling with the electric motor (see
Attachment III).
Make sure the pulleys are aligned when driven; adjust the belt tension and provide adequate safety
protection.
Excessive belt tension can cause the oil to overheat, reduce bearing life and create a danger of explosion.
The pump should be installed horizontally with respect to the base to facilitate optimum lubrication, on an anti-
vibration base.
Check the direction of the motor and crankshaft rotation (indicated near them): they must match.
The pump’s suction pipe must be proportional to the volume and its diameter must not be less than the suction
mouth. It is important that there are as few bottlenecks on this pipe as possible (elbows, T couplings, reductions,
etc). Each junction on the suction pipe must be sealed properly with Teflon tape or a similar product to avoid leaks
or air intake (cavitation). Cavitation is the formation of bubbles of steam in the liquid: their implosion generates
abnormal stress which is very damaging for all pump parts. To safeguard optimum pump life, avoid the circulation
of liquid containing sand or other solid particles as this affects the efficiency of valves, the plungers and seals.
This can be prevented by fitting an oversized filter on the suction pipe with respect to the pump volume. The filter
should be cleaned regularly.
The delivery pipe must be able to support the operating pressure of the pump. Excessively narrow passages can
result in lance pressure loss.
To prevent injury or damage to the pump, it is essential to fit a pressure control valve and a safety valve to
prevent the pressure accidentally exceeding its operating level. Contact our technical staff before fitting these
valves. To keep the system pressure under control, a pressure gauge should be fitted on the delivery line with an
appropriate bottom scale.
The motor-pump direct coupling requires application of lubricant grease (sect. 3.10).
Connection types with different specifications or not contemplated in this manual shall not ensure full
conformity with the certifications provided by LEUCO S.p.A. (Dir. ATEX) who shall not be liable for the
selection of other options than those specified in this manual.
If you have doubts, we recommend contacting the Manufacturer’s Engineering Department.

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A) Tank or waterworks
B) Shut-off valve
C) Filter on inlet line
D) Auxiliary pump
E) Pressure gauge on intake line
F) Pressure gauge on delivery line
G) Safety valve
H) Pressure reducer
I) Regulating and bypass valve
J) Nozzle
a) Feed pipe
b) Delivery pipe
c) Safety valve drain pipe
d) Bypass pipe
e) Valve outlet pipe
5.1 Setting-up by the Purchaser / Operator
The customer is responsible for setting up the following:
If the pump is coupled with an electric motor, the motor must be conforming with Directive 2014/34/EU
and must be suitable for use in the same areas as the pump. It must also have a suitable protection level
with the intended use.
The installer/end user is responsible for deciding the type of coupling between the motor and pump, and
for following the instructions provided in this document.
The installer/end user must ensure a max pressure valve is fitted on the pump delivery outlet.
The installer/end user must fit a system that guarantees the immediate arrest of the hydraulic system in
case of a sudden increase in pump temperature and/or excessive current absorption.
All connection operations require strict compliance with the specifications given in the User and
Maintenance Manual of the end machine where the pump is incorporated.

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XLT IEX –XLT HT IEX series
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5.2 What to do before starting up the pump for the first time
You should complete a range of checks and controls before starting up the pump, in order to prevent errors or accidents during the
initial commissioning stage:
Check no damage was caused to the machine during assembly, installation or transport (stability, screws/bolts secured
correctly, correct coupling of mechanical parts/gears);
Stop all use of the pump immediately if you see any leakage from pressurised pipes and eliminate the cause of the
Leakage
Before starting up the pump, make sure the oil is up to the correct level. We recommend doing the first oil change within
the first 50 hours of operation. Subsequent oil changes should take place every 500 hours or more often in case of heavy
use. The type of oil used for our pumps is SAE 10/40W.
Replace the oil cap fitted during shipment with the bleed cap supplied.
Always follow the safety instructions listed in section 3.
Failure to comply with these operating conditions invalidates the warranty.
The machine should NOT BE OPERATED until any damaged parts have been repaired or replaced if it does
not seem to guarantee it will run safely and properly.
After the installer has completed all of the required connections, he will test the product to ensure all the devices it contains work
properly:
After starting up the pump, aid priming by keeping the delivery line open (lance). Do not let the pump run dry: this can result
in rapid seal wear and invalidates the warranty.
After use, run the pump with clean water for several minutes. Do not use the pump at low temperatures. To prevent
freezing, run the pump dry for about 20 seconds to drain the pipes.
5.3 Long periods of downtime
Prepare the pump if it will not be operated for an extensive period of time:
Run the pump with clean water for several minutes
Run the pump without water for 10 seconds with the delivery line (lance) open to drain the pump and the delivery circuit,
thus preventing the formation of deposits
Wash the pump with water and solvents authorised by current legislation
Dry the pump using compressed air
Lubricate any unpainted parts
Avoid the possibility of the system coming into contact with corrosive substances.
Mineral oils will degrade in case of downtime or inactivity for more than six months, and so must be
replaced.
When resuming operation of the machine after an extensive period of inactivity, repeat the initial
commissioning controls (subsection 5.2). Also check the oil and that all screws are secured tightly.
5.4 Operating the pump
To safeguard proper pump operation, the pump should preferably be fed (maximum pressure 8 bar), otherwise it should be located
under the water head or at the same level as the tank.
Hawk pumps are delivered with their first oil fill and are fitted with a sealed cap to prevent oil spilling during transport. Before starting
to use the pump for the first time, remember to replace the sealed cap with the cap with the dipstick and bleed.