Samoa LARIUS SIRIO Operating instructions

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REV. 03 - 11/2020
Manuale Cod. 150108
SIRIO
Pneumatic pump
Plunger piston
30:1 - 45:1
II 2G c IIB T6
EN
OPERATING AND MAINTENANCE MANUAL

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SIRIO PLUNGER PISTON 30:1 - 45:1
REV. 03 - 11/2020 - Cod. 150108
Due to a constant product improvement programme, the factory reserves the right to modify
technical details mentioned in this manual without prior notice.
This manual is to be considered as an English language translation of the original manual in Italian.
The manufacturer shall bear no responsibility for any damages or inconveniences that may arise due to
the incorrect translation of the instructions contained within the original manual in Italian.

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SIRIO PLUNGER PISTON 30:1 - 45:1
REV. 03 - 11/2020 - Cod. 150108
WE ADVISE THE USE OF THIS EQUIPMENT ONLY BY PROFESSIONAL OPERATORS.
ONLY USE THIS MACHINE FOR USAGE SPECIFICALLY MENTIONED IN THIS MANUAL.
Thank you for choosing a LARIUS S.R.L. product.
As well as the product purchased, you will receive a range of support services
enabling you to achieve the results desired, quickly and professionally.
SIRIO
Pneumatic pump - Plunger piston 30:1 - 45:1
INDEX
WARNINGS ............................................................................................................................................................ P. 4
WORKING PRINCIPLE ........................................................................................................................................... P. 5
TECHNICAL DATA .................................................................................................................................................. P. 5
DESCRIPTION OF THE SUPPLY............................................................................................................................ P. 6
CONDITIONS OF GUARANTEE ............................................................................................................................. P. 6
REFERENCE STANDARDS .................................................................................................................................... P. 6
DESCRIPTION OF THE EQUIPMENT .................................................................................................................... P. 7
TRANSPORT AND UNPACKING ............................................................................................................................ P.11
SAFETY RULES...................................................................................................................................................... P.11
SETTING-UP .......................................................................................................................................................... P.12
WORKING .............................................................................................................................................................. P.14
CLEANING AT THE END OF THE WORK............................................................................................................... P.15
ROUTINE MAINTENANCE ..................................................................................................................................... P.17
DISASSEMBLY AND REASSEMBLY OF THE PUMPING UNIT.............................................................................. P.18
MANUAL RESET OF THE PNEUMATIC MOTOR ................................................................................................... P.27
DISASSEMBLY AND REASSEMBLY OF THE PNEUMATIC MOTOR..................................................................... P.28
PROBLEMS AND SOLUTION ................................................................................................................................ P.36
SPARE PARTS ...................................................................................................................................................... P.37
COMPLETE PNEUMATIC MOTOR......................................................................................................................... P.38
PNEUMATIC REGULATOR UNIT ASSEMBLY. ....................................................................................................... P.40
FILTER ASSEMBLY ................................................................................................................................................ P.41
COMPLETE BOTTOM VALVE ASSEMBLY ............................................................................................................. P.42
COMPLETE PISTON SHAFT ASSEMBLY .............................................................................................................. P.43
COMPLETE CYLINDER BODY ASSEMBLY ........................................................................................................... P.44
STANDARD COMPLETE TROLLEY - HEATER ASSEMBLY KIT ............................................................................ P.46
WALL SUPPORT .................................................................................................................................................... P.47
PAINT SUCTION SYSTEM ..................................................................................................................................... P.47
ACCESSORIES....................................................................................................................................................... P.48
ATEX - DECLARATION OF CONFORMITY............................................................................................................. P.50
DECLARATION OF CONFORMITY......................................................................................................................... P.51
A
C
D
B
E
H
G
F
I
M
N
J
K
L
O
P
Q
R
R1
R2
R3
R4
R5
R6
R7
R8
R9
S
T

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SIRIO PLUNGER PISTON 30:1 - 45:1
REV. 03 - 11/2020 - Cod. 150108
The table below provides the meaning of the symbols used in this manual in relation to using, earthing, operating, maintaining, and
repairing of this equipment.
WARNINGS
A
• Read this operator’s manual carefully before using the equipment.
• An improper use of this machine can cause injuries to people or things.
• Do not use this machine when under the inuence of drugs or alcohol.
• Do not modify the equipment under any circumstances.
• Use products and solvents that are compatible with the various parts of the equipment, and read the manufacturer’s warnings carefully.
• See the Technical Details for the equipment given in the Manual.
• Check the equipment for worn parts once a day. If any worn parts are found, replace them using ONLY original spare parts.
• Keep children and animals away from work area.
• Comply with all safety standards.
•It indicates an accident risk or serious damage to equipment if this warning is not followed.
FIRE AND EXPLOSION HAZARD
•Solvent and paint fumes in work area can ignite or explode.
•To help prevent fire and explosion:
- Use equipment ONLY in well ventilated area.
- Eliminate all ignition sources, such as pilot lights, cigarettes and plastic drop cloths (potential static arc).
- Ground equipment and conductive objects.
- Use only grounded hoses.
- Do not use trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or uids containing such solvents in
pressurized aluminium equipment. Such use can cause serious chemical reaction and equipment rupture, and result in death,
serious injury, and property damage.
- Do not form connections or switch light switches on or off if the air contains inammable fumes.
•If electrical shocks or discharges are encountered the operation being carried out using the equipment must be stopped immediately.
•Keep a re extinguisher at hand in the immediate vicinity of the work area.
• It indicates wound and nger squashing risk due to movable parts in the equipment.
• Tenersi lontano dalle parti in movimento.
• Do not use the equipment without the proper protection.
• Before any inspection or maintenance of the equipment, carry out the decompression procedure explained in this manual, and prevent
any risk of the equipment starting unexpectedly.
•Report any risk of chemical reaction or explosion if this warning has not been given.
•(IF PROVIDED) There is a risk of injury or serious lesion related to contact with the jet from the spray gun. If this should occur, IMME-
DIATELY contact a doctor, indicating the type of product injected.
•(IF PROVIDED) Do not spray before the guard has been placed over the nozzle and the trigger on the spray gun.
•(IF PROVIDED) Do not put your ngers in the spray gun nozzle.
•Once work has been completed, before carrying out any maintenance, complete the decompression procedure.
•It indicates important recommendations about disposal and recycling process of products in accordance with the environmental
regulations.
•Mark any clamps attached to earth cables.
•Use ONLY 3-wire extension cords and grounded electrical outlets.
•Before starting work make sure that the electrical system is grounded and that it complies with safety standards.
•High-pressure uid from gun, hose leaks, or ruptured components will pierce skin.
•To help prevent injection, always:
- (IF PROVIDED) Engage trigger lock when not spraying.
- (IF PROVIDED) Do not put your hand over the spray tip. Do not stop or deect leaks with your hand, body or other.
- (IF PROVIDED) Do not point gun at anyone or at any part of the body.
- (IF PROVIDED) Never spray without tip guard.
- Do pressure relief if you stop spraying or being servicing sprayer and before any maintenance operations.
- Do not use components rated less than sprayer Maximum Working Pressure.
- Never allow children to use this unit
- (IF PROVIDED) Brace yourself; gun may recoil when triggered.
If high pressure fluid pierces your skin, the injury might look like “just a cut”, but it is a serious wound!
Get immediate medical attention.
• It is obligatory to wear suitable clothing as gloves, goggles and face shield.
• Wear clothing that complies with the safety standards in force in the country in which the equipment is used.
• Do not wear bracelets, earrings, rings, chains, or anything else that may hinder the operator’s work.
• Do not wear clothing with wide sleeves, scarves, ties, or any other piece of clothing that could get tangled up in moving parts of the
equipment during the work, inspection, or maintenance cycles.

A
B
C
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SIRIO PLUNGER PISTON 30:1 - 45:1
REV. 03 - 11/2020 - Cod. 150108
B
WORKING PRINCIPLE
SIRIO pumps are pneumatic pumps for high pressure painting
without the use of compressed air (AIRLESS).
The stainless steel version is particularly suitable for use with
water-based paints.
The SIRIO pump is essentially comprised of an air motor and a
structure known as the “Material Pumping Unit”, or simply the
“Pumping Unit”.
In the pneumatic motor, compressed air causes the vertical reci-
procating movement of the motor piston; this movement is tran-
smitted through a connecting rod to the material pumping piston.
This allows for the material to be aspirated and pushed towards
the outlet.
The unit comes complete with a transportation trolley, a high-pres-
sure material lter, an air supply regulator for the pump, a material
suction tube (complete with lter) and a recirculation tube.
The ratio 27:1 - 30:1 - 32:1 - 45:1 means that the outlet pressure
of material is 27 - 30 - 32 - 45 times higher than the pump feed
air pressure.
SIRIO 30:1
Plunger piston
45:1
Plunger piston
Pump feed air pressurea 3-7 bar 3-7 bar
Maximum pressure of the product 210 bar 270 bar
Feed air inlet 1/2" BSPP (F) 1/2" BSPP (F)
Material entry 3/4" BSPT (M) 3/4" BSPT (M)
Material exit 3/8" BSPP (F) 3/8" BSPP (F)
Maximum delivery 7.5 l/min 5 l/min
Cc/cycle 125 83
Weight 60 Kg 60 Kg
Noise pressure level <80 dB (A) <80 dB (A)
Height (A) 930 930
Width (B) 450 450
Depth (C) 450 450
TECHNICAL DATA
C

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SIRIO PLUNGER PISTON 30:1 - 45:1
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Parts of the pump in contact with the material
Pumping group: galvanised carbon steel and aluminium or stainless
steel (based on the versions)
Sealing balls: stainless steel AISI 420B
Gaskets: PTFE
Code Description
K99001 Sirio 27:1 Stainless steel - Trolley version + accessories
99000 Sirio 27:1 Stainless steel complete with FRL unit, line filter, drain valve,
suction-recirculation system
35014 High pressure hose ø¼” 7.5 m M16x1.5 fitting
11200 AT250 airless spray gun with M16x1.5 revolving fitting
18270 Super Fast Base Clean
SFC Airless nozzle (choice of size)
17200 Toolbox
K99003 Sirio 32:1 Stainless steel - Trolley version + accessories
99002 Sirio 32:1 Stainless steel complete with FRL unit, line filter, drain valve,
suction-recirculation system
35014 High pressure hose ø¼” 7.5 m M16x1.5 fitting
11200 AT250 airless spray gun with M16x1.5 revolving fitting
18270 Super Fast Base Clean
SFC Airless nozzle (choice of size)
17200 Toolbox
Other parts of the pump
Motor casing and motor piston: aluminium
Pneumatic motor piston rod: stainless steel
Trolley structure: painted sheet metal
Always observe these instructions carefully when evaluating the product compatibility and in case of disposal of
some parts of the pump no more usable, in order to meet the environmental regulations on recycling process.
E
The conditions of guarantee do not apply in the
following situations:
- improper washing and cleaning of components
causing malfunction, wear or damage to the
equipment or any of its parts;
- improper use of the equipment;
- use that does not conform with applicable na-
tional legislation;
- incorrect or faulty installation;
- modifications, interventions and maintenance
that have not been authorised by the manu-
facturer;
- use of non-original spare parts or parts that do
not correspond to the specific model;
- total or partial non-compliance with the in-
structions provided.
CONDITIONS OF GUARANTEE REFERENCE STANDARDS
F
The reference documentation for the design and manufacture of
the line/machine by the LARIUS company is as follows:
• Directive 2006/42/EC on the approximation of the laws of the
Member States relating to machines.
• EN ISO 12100-1/-2 - Safety of machinery - General design
principles - Risk assessment and risk reduction.
DESCRIPTION OF THE SUPPLY
D

2
3
1
5
4
Fig. 1G
6
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SIRIO PLUNGER PISTON 30:1 - 45:1
REV. 03 - 11/2020 - Cod. 150108
DESCRIPTION OF THE EQUIPMENT
G
Pos. Description
1 Pneumatic motor pump
2 Trolley transport equipment
3 Feed air pressure regulatoror group
Pos. Description
4 Spray technology
5 Material pumping group
6 Material suction group

12
7
10
8
9
Air
Fig. 2G
11 13
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SIRIO PLUNGER PISTON 30:1 - 45:1
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Pos. Description
7 Feed air pressure regulator pump
8 Compressed air inlet
9 Feed air pressure reading manometer
10 Air filter
Pos. Description
11 Sound absorbing filter
12 Cable grounding with gripper
13 Earthing cable securing point

17
18
20
21
19
22
Fig. 3G
15
16
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SIRIO PLUNGER PISTON 30:1 - 45:1
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14
Pos. Description
14 Filter
15 Oil cup
16 Gasket holder
17 High pressure material out filter
18 Material outlet fitting
Pos. Description
19 Recirculation pipe fitting fixing
20 Product delivery tap
21 Recirculating cock
22 Fitting pipe fitting intake

23
24
25
26
28
27
Fig. 4G
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SIRIO PLUNGER PISTON 30:1 - 45:1
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Pos. Description
23 Material flexible pipe
24 Gun AT250 - OPTIONAL
25 Gun L91 - OPTIONAL
Pos. Description
26 Material suction filter
27 Fluid recirculation pipe
28 Material suction pipe

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SIRIO PLUNGER PISTON 30:1 - 45:1
REV. 03 - 11/2020 - Cod. 150108
• Observe the orientation of the packaging indicated externally
by inscriptions or symbols
• Before installing the equipment to prepare a suitable environment
with the space that you need the proper lighting clean, smooth
ooring
• All unloading and handling of the equipment are covered by
the user must be very careful to avoid injury or damage to the
equipment.
For the use of the specialized personnel and discharge operation
enabled (forklift, crane operators, etc.) and a suitable lifting
means I have sufcient strength for the weight of the package
and will comply with all safety regulations.
The personnel must be equipped with the necessary individual
protection.
• The manufacturer declines any responsibility concerning the
unloading and transport of the equipment at the workplace
• Verify the integrity of the package upon receipt, remove the unit
from the packaging and check that it has not been damaged
during transport
If any part is broken, contact the LARIUS and shipping agency.
The deadline for submissions is corruption of 8 days from the
date of receipt of the equipment. The communication must be
made by registered letter with return receipt up to LARIUS and
transport operator within.
• THE EMPLOYER SHALL TRAIN ITS EMPLOYEES ABOUT ALL
THOSE RISKS STEMMING FROM ACCIDENTS, ABOUT THE
USE OF SAFETY DEVICES FOR THEIR OWN SAFETY AND
ABOUT THE GENERAL RULES FOR ACCIDENT PREVENTION
IN COMPLIANCE WITH INTERNATIONAL REGULATIONS AND
WITH THE LAWS OF THE COUNTRY WHERE THE PLANT IS
USED.
• THE BEHAVIOUR OF THE EMPLOYEES SHALL STRICTLY
COMPLY WITH THE ACCIDENT PREVENTION AND ALSO
ENVIRONMENTAL REGULATIONS IN FORCE INTHE COUNTRY
WHERE THE PLANT IS INSTALLED AND USED.
• KEEP YOUR WORK PLACE CLEAN AND TIDY. DISORDER
WHERE YOU ARE WORKING CREATES A POTENTIAL RISK
OF ACCIDENTS.
• ALWAYS KEEP PROPER BALANCE AVOIDING UNUSUAL
STANCE.
• BEFORE USING THE TOOL, ENSURE THERE ARE NOT DA-
MAGED PARTS AND THE MACHINE CAN WORK PROPERLY.
• ALWAYS FOLLOW THE INSTRUCTIONS ABOUT SAFETY AND
THE REGULATIONS IN FORCE.
• KEEP THOSE WHO ARE NOT RESPONSIBLE FOR THE EQUI-
PMENT OUT OF THE WORK AREA.
• NEVER EXCEED THE MAXIMUM WORKING PRESSURE
INDICATED.
• NEVER POINT THE SPRAY GUN AT YOURSELVES OR AT
OTHER PEOPLE. THE CONTACT WITH THE CASTING CAN
CAUSE SERIOUS INJURIES.
• IN CASE OF INJURIES CAUSED BY THE GUN CASTING, SEEK
IMMEDIATE MEDICAL ADVICE SPECIFYING THE TYPE OF
THE PRODUCT INJECTED. NEVER UNDERVALUE A WOUND
CAUSED BY THE INJECTION OF A FLUID.
• ALWAYS DISCONNECT THE SUPPLY AND RELEASE THE
PRESSURE IN THE CIRCUIT BEFORE PERFORMING ANY
CHECK OR PART REPLACEMENT OF THE EQUIPMENT.
• NEVER MODIFY ANY PART IN THE EQUIPMENT. CHECK
REGULARLY THE COMPONENTS OF THE SYSTEM.
REPLACE THE PARTS DAMAGED OR WORN.
• TIGHTEN AND CHECK ALL THE FITTINGS FOR CONNECTION
BETWEEN PUMP, FLEXIBLE HOSE AND SPRAY GUN BEFORE
USING THE EQUIPMENT.
• ALWAYS USE THE FLEXIBLE HOSE SUPPLIED WITH STAN-
DARD KIT.
• THE USE OF ANY ACCESSORIES OR TOOLING OTHER THAN
THOSE RECOMMENDED IN THIS MANUAL, MAY CAUSE
DAMAGE OR INJURE THE OPERATOR.
• THE FLUID CONTAINED IN THE FLEXIBLE HOSE CAN BE VERY
DANGEROUS. HANDLE THE FLEXIBLE HOSE CAREFULLY. DO
NOT PULL THE FLEXIBLE HOSE TO MOVE THE EQUIPMENT.
NEVER USE A DAMAGED OR A REPAIRED FLEXIBLE HOSE.
TRANSPORT AND
UNPACKING
SAFETY REGULATIONS
H
Disposal of packaging materials, borne by the
user and must be performed in compliance with
the regulations in force in the country of use of
the equipment.
It is always good to recycle as much as possible in
an environmentally friendly packaging materials.
I
Read carefully the following before using the
product.
Keep these instructions.
Unauthorized tampering or replacement of one or
moreparts composingtheequipment, accessories,
tools, materials other than those recommended by
the manufacturer, may pose risk of injury and raise
the manufacturer from civil and criminal liability.

Fig. 2J
Fig. 3J
J6
J4
J5
J3
J1
J2
Fig. 1J
Fig. 1I
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SIRIO PLUNGER PISTON 30:1 - 45:1
REV. 03 - 11/2020 - Cod. 150108
I1
The high speed of travel of the product in the hose
can create static electricity through discharges
and sparks. It is suggested to earth the equipment.
The pump is earthed through the earth cable of
the supply (I1).
The gun is earthed through the high pressure
flexible hose.
All the conductors near the work area must be
earthed.
Avoid approaching too much to the pump piston
rod when the pump is working or under pressure.
A sudden movement of the piston rod can cause
wounds or finger squashing.
Never spray over flammable products or solvents
in closed places.
Never use the tooling in presence of potentially
explosive gas.
Always check that the product is compatible with
the materials composing the equipment (pump,
spray gun, flexible hose and accessories) with
which it can come into contact. Never use paints
or solvents containing Halogen Hydrocarbons (as
the Methylene Chloride). If these products come
into contact with aluminium parts can provoke
dangerous chemical reactions with risk of corro-
sion and explosion.
If the product to be used is toxic, avoid inhalation
and contact by using protection gloves, goggles
and proper face shields.
Take proper safety measures for the protection
of hearing in case of work near the plant.
SETTING-UP
J
CONNECTION OF SUCTION AND RECIRCULATING PIPES
• Connect the suction pipe (J3) to the pump and connection and
the recirculation pipe (J5) to the connection (J6). The suction
hose can be locked nger tight. Use a spanner to tighten the
recirculating pipe. In both cases do not use sealant agents for
tting threads.
CONNECTION TO THE FEED AIR
• For pump feed use a hose (J1) with an internal diameter no
lower than 10 mm and connect it to the tting (J2).

Fig. 5J
Fig. 7J
Fig. 4J
Fig. 6J
J7
J9
J8
J11
J9
J10
J5
J3
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SIRIO PLUNGER PISTON 30:1 - 45:1
REV. 03 - 11/2020 - Cod. 150108
Make sure the product to be used is compatible
with the materials employed for manufacturing
the equipment. For this reason, please contact
the supplier of the product.
CONNECTION OF SUCTION AND RECIRCULATING PIPES
AIRLESS version
• Connect the high pressure exible hose (J7) to the pump by
means of the connection (J8) and to the spray gun (J9), paying
attention to tighten the ttings strongly (the use of two spanners
is suggested). Do not use sealant agents for tting threads.
• Make sure the spray gun is without the atomization nozzle.
WASHING OF THE BRAND-NEW EQUIPMENT
• The equipment has been tested at our plant with light mineral
oil left inside of the pumping element as protection. Therefore,
before sucking the product, carry out a washing using a diluent.
• Dip the suction hose (J3) into the tank of the washing.
• Insert the recirculating pipe (J5)into a container (a metal con-
tainer is suggested).
• Open the recirculating cock (J10).
PREPARATION OF THE PAINT
• Ensure the product is suitable to be used with a spray gun.
• Mix and filter the product before using it. For filtration, the use
of close-mesh (Ref. 214) and large-mesh (Ref. 215) LARIUS
METEX braids is suggested.
• Set the pump feed pressure at about 3 bar and open the air
passage valve.
• The pump will start working and will drain oil from the recir-
culating pipe. Close the recirculating cock (J10)as soon as
the clean solvent has come out.
• Lift the solvent tank’s suction tube (J3).
• Lean the spray gun (J9)against the rim of the container (J11)
and drain the residual oil pressing the trigger. Release the
trigger as soon as the clean solvent comes out.
• Point the spray gun at the tank of the solvent and press the
trigger so as to recover the clean solvent left inside the pump.
• As an accelerated working of the pump (the pump “idles”)
appears, close the air passage valve.

Fig. 1K
Fig. 2K Fig. 5K
Fig. 3K
Fig. 4K
K4
K3
K5
K1
K6
K2
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SIRIO PLUNGER PISTON 30:1 - 45:1
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WORKING
K
• Use the machine after carrying out all the setting-up operations
described in the previous paragraph.
• Use the supplied lubricant (K1)(ref. 16325) to facilitate the
sliding of the piston inside the seal packing and to interpose
the oil within the air.
At the start of each working day, make sure that
the ring nut is filled with hydraulic oil (ref. 16325);
the oil facilitates the sliding of the piston and
prevents any material which may have leaked
out of the seals from drying once the equipment
has been shut off.
• Fix the atomization nozzle (K2) on the spray gun. Select the
right nozzle according to the characteristics of the material to
be used and to the type of work to be performed.
• Dip the suction (K3) and recirculating pipes (K4) into the tank
of the product.
• Open the recirculating cock (K5).
• Adjust the supply pressure of the pump by acting on the knob
(K6) at approx. 3-4 bars and open the air passage valve.
Check all the fittings for connection of the different
components (pump, flexible hose, spray gun, etc.)
before using the equipment.

K7
Fig. 6K
Fig. 1L Fig. 2L
L1 L2
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SIRIO PLUNGER PISTON 30:1 - 45:1
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CLEANING AT THE END OF THE WORK
L
• Lift the suction hose (L1) from the tank of the product. • Reduce the pump feed pressure to about 3-4 bar (L2).
NOTA
An irregular and marked spray on the sides indicates a low working pressure. On the contrary, a too high pressure causes
a high fog (“overspray”) and waste of product.
In order to avoid overthick ness of paint, let the gun advance sideways (right-left) when spraying.
Always paint with regular parallel bands coats.
Keep a safety and constant distance between the spray gun and the support to be painted and keep yourselves per-
pendicular to it.
Never point the spray gun at your selves or at other people.
The contact with the cating can cause serious injuries.
• Allow the product to circulate for a few seconds. Then close
the recirculating cock (K5). The pump will keep on working
until the high pressure exible hose is full of product up to the
spray gun. Then the pump will stop automatically.
• Increase pump feed pressure so as to reach a pressure value
to guarantee a good atomization of the product and open the
delivery valve (K7).

Fig. 3L
L3
Fig. 4L
L5
L4
Fig. 5L
L6
Fig. 6L
Fig. 7L
L9
L4
L8
L7
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SIRIO PLUNGER PISTON 30:1 - 45:1
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Store possible dangerous fluids in proper con-
tainers. Their disposal must be performed in
accordance with the regulations in force about
the industrial waste goods.
• Open te recirculating cock (L3) so as to recover the product
left inside the equipment.
• Close the air passage valve (L2) for pump feed.
• Point the spray gun (L4) at the tank (L5) of the solvent and
press the trigger so as to recover the clean solvent left inside
the pump.
• Remove the nozzle (L6) from the spray gun (Do not forget to
clean it using a solvent!).
• Dip the suction hose (L7) into the tank of the washing solvent
(ensure it is compatibile with the product being used).
• Insert the recirculating hose (L8) into a container (a metal con-
tainer is recommended).
• Open the recirculating cock. (L3).
• Open the air passage valve (L2) in order to start up the pump.
• Close the recirculating cock (L3) as soon as a clean solvent
comes out.
• Lift the solvent tank’s suction tube.
• Point the spray gun (L4) at the tank (L9) of the solvent and
press the trigger so as to recover the clean solvent left inside
the pump.
• As an accelerated working of the pump (the pump “idles”)
appears, close the air passage valve.
• In case of long storage, we recommend you to suck and to
leave light mineral oil inside the pumping group and the exible
hose.
• In this case, please follow the washing procedure described
on page 8 before using the tooling.

Always close the compressed air supply and release the pressure in the plant before performing any check or
maintenance of the pump.
At the start of each working day, make sure that the ring (M3) nut is filled with hydraulic oil (ref. 16340); the oil
facilitates the sliding of the piston and prevents any material which may have leaked out of the seals from drying
once the equipment has been shut off.
M4
M2
M1
M3
Rif. 16340
M2
M2
M5
Fig. 4M Fig. 5M Fig. 6M
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Fig. 1M Fig. 2M Fig. 3M
M
RING NUT CHECK
• Check periodically (and every time the pump is operated after a long storage) the packing nut is not loosened, causing otherwise
the coming out of the product. To tighten the packing nut (M1) use wrench supplied (M2).
MATERIAL SUCTION FILTER
• Remove and clean the material suction filter (M4).
High pressure FILTER CLEANING
• Remove and clean the high pressure filter for material outlet (M5) using the proper wrench (M2) supplied.
• Check periodically the air supply to the pump. Ensure the air is always clean and lubricated.
ROUTINE MAINTENANCE
NOTE
The packing nut must be tightened so as to avoid wastes of product, but not excessively to avoid the seizure of the
pumping piston and the wear of seals. In case of persistent coming out of product, replace the seals.

2a
Necessary tools and equipment
1
Necessary tools and equipment
2
Procedure
3.1 Remove the protection spring (3a) and the
oil holder cup (3b)
3
3a
3b
2a
3a 3b
Procedure
1.1 Remove the high pressure filter unit from the pump
Procedure
2.1 Remove nuts (2a)
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18
SIRIO PLUNGER PISTON 30:1 - 45:1
REV. 03 - 11/2020 - Cod. 150108
N
DISMANTLING AND REASSEMBLING THE PUMPING UNIT

CLEANER
Necessary tools and equipment
Necessary tools and equipment
Procedure
4.1 Unscrew the gasket bring ring (4a)
4.2 Pull out the spring (4b)
Procedure
5.1 Remove the gaskets (5.a) contained inside the ring nut
5.2 Clean and lubricate the gasket housing
5.3 Replace gaskets with the new complete kit (5.b)
4
5
4a
4b
5b
5a
A: Gasket holder
B: Female STEEL ring
C: PTFE seal ring
D: POLYPROPYLENE HD seal ring
E: Male STEEL ring
4a
A
B
C
D
C
D
E
Direction
of assembly
Follow the direction of rotation
of gaskets
NOTE
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19
SIRIO PLUNGER PISTON 30:1 - 45:1
REV. 03 - 11/2020 - Cod. 150108

Necessary tools and equipment
Procedure
7.1 Remove the screw (7a) on the bottom valve body
7.2 Using a 70 mm wrench, unscrew the bottom valve body (7b)
7.3 Remove the bottom valve body and remove the ball (7c)
7
Necessary tools and equipment
Procedure
8.1 Remove the gaskets (8a)
contained inside the bottom valve
8.2 Clean and lubricate the gasket housing
8.3 Replace the gaskets with the
new complete kit (8b)
8
7a
7c 7b
CLEANER
A: Ball
B: Ball housing
C: Ball housing holder
D: OR ring in PTFE
E: Hex socket set screw
F: Bottom valve body
8a
A
B
C
D
F
E
8b
Procedure
6.1 Remove the gaskets (6a, 6b, 6c)
6.2 Clean and lubricate the gasket housing
6.3 Replace the gaskets with the new complete kit
CLEANER
Necessary tools and equipment
6
6a 6b 6c
6a: OR ring in NBR
6b: OR ring in VITON
6c: OR ring in PTFE
Follow the direction of rotation
of gaskets
NOTE
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20
SIRIO PLUNGER PISTON 30:1 - 45:1
REV. 03 - 11/2020 - Cod. 150108