Larius Sirio 27:1, Sirio 32:1 Instruction Manual

ITALIANO

Ediz. 006 - 12/2017

www.larius.eu

INSTRUCTION MANUAL

Sirio

27:1
32:1

SIRIO

Ediz. 006 - 12/2017

www.larius.eu

2

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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SPARE PARTS

COMPLETE PNEUMATIC MOTOR .................... p.35

PNEUMATIC REGULATOR UNIT ASSEMBLY. ... p.37

PUMPING 155 CC (32:1) ..................................... p.38

PUMPING 180 CC (27:1) ..................................... p.39

FILTER ASSEMBLY ............................................p.40

STANDARD COMPLETE TROLLEY .................... p.41

PAINT SUCTION SYSTEM ................................. P. 42

PUMPING UNIT COUPLING KIT ........................ p.43

ACCESSORIES .................................................. p.44

INDEX ................................................................. P. 3

WARNINGS ........................................................P. 5

WORKING PRINCIPLE ....................................... p. 6

TECHNICAL DATA ............................................. p. 6

DESCRIPTION OF THE EQUIPMENT ............... p. 8

TRANSPORT AND UNPACKING ....................... p.10

SAFETY RULES ................................................. p.11

SETTING-UP ...................................................... p.12

WORKING ......................................................... p.14

CLEANING AT THE END OF THE WORK .......... p.14

ROUTINE MAINTENANCE ................................. p.15

DISASSEMBLY AND REASSEMBLY

OF THE PUMPING UNIT .................................... p.16

RIPRISTINO MANUALE DEL MOTORE

PNEUMATICO ................................................... p.24

DISASSEMBLY AND REASSEMBLY

OF THE PNEUMATIC MOTOR ........................... p.25

PROBLEMS AND SOLUTION ............................ p.33

Q
R

S

N
O
P

A
B
C
D
E
F
G
H

J

K

L

M

I

T

U

V

AIRLESS PNEUMATIC PUMPS FOR SPRAY PAINTING

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.

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Ediz. 006 - 12/2017

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White page

intentionally

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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 influence 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.

It indicates important recommendations about disposal and recycling process of products in accordance with the environmental
regulations.

WARNINGS

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.

It indicates wound and finger 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.
There is a risk of injury or serious lesion related to contact with the jet from the spray gun. If this should occur, IMMEDIATELY
contact a doctor, indicating the type of product injected.
Do not spray before the guard has been placed over the nozzle and the trigger on the spray gun.
Do not put your fingers in the spray gun nozzle.
Once work has been completed, before carrying out any maintenance, complete the decompression procedure explained in
this manual.

This symbol signals the presence of a terminal with a grounding cable.
Use ONLY three-wire extensions and electrical outlets with grounding connections.
Before beginning work, make sure the electrical system is equipped with a grounding connection and that it complies with the safety
regulations.

High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin.
To help prevent injection, always:

- Engage trigger lock when not spraying.

- Do not put your hand over the spray tip. Do not stop or deflect leaks with your hand, body or other.

- Do not point gun at anyone or at any part of the body.

- Never spray without tip guard.

- Ensure the trigger is locked at the end of spraying procedure.

- Do pressure relief at the end of spraying procedure and before any service operation.

- NEVER use components whose operating pressure is below the Maximum Working Pressure.

- Never allow children use this unit.

- Pay close attention to the possible recoil during gun triggering.

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.

FIRE AND EXPLOSION HAZARD
Solvent and paint fumes in working 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 airless conductive hoses.

• Do not use trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids containing such

solvents in pressurized aluminium equipment. Such use can cause serious chemical reaction and explosion.

• Never clean when the electrostatic parts of the gun are ON. Turn on the electrostatic parts of the gun only after having
removed any solvent from the circuit.

• Use cleaning solvents with a flash point as high as possible, preferably higher than ambient temperature

If electrical shocks or discharges are encountered, immediately stop the operation of the equipment.
Keep a fire extinguisher at hand close to the working area.

0

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A

B

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
reciprocating movement of the motor piston; this movement
is transmitted through a connecting rod to the material pum-

ping piston.
This allows for the material to be aspirated and pushed towards
the outlet. The unit comes complete with a transportation
trolley, a high-pressure material filter, an air supply regulator
for the pump, a material suction tube (complete with filter)
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.

TECHNICAL DATA

27:1

3-7 bar

189 bar

1/2" GAS (F)

3/4" GAS C (M)

3/8" GAS C (F)

9.2 l/min

153

58 Kg

<80 dB (A)

930

450

450

PUMP FEED AIR PRESSUREA

MAXIMUM PRESSURE OF THE PRODUCT

*FEED AIR INLET

MATERIAL ENTRY

MATERIAL EXIT

MAXIMUM DELIVERY

CC/CYCLE

WEIGHT

NOISE PRESSURE LEVEL

DIMENSIONS

A

B

C

32:1

3-7 bar

224 bar

1/2" GAS (F)

3/4" GAS C (M)

3/8" GAS C (F)

8.2 l/min

137

58 Kg

<80 dB (A)

930

450

450

SIRIO

WORKING PRINCIPLE

a

c

b

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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: Teflon

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.

ATEX plate

Code

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

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

K99000

K99002

Description

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C

DESCRIPTION OF THE EQUIPMENT

POS.

1

2

3

4

5

6

7

8

9

10

Compressed air inlet

Manometer reading air pressure alim. pump

Feed air pressure regulator. pump

Trolley transport equipment

Sound absorbing filter

Pneumatic motor pump

Filtro alta pressione uscita materiale

High pressure filter out material

Recirculating cock

Recirculation pipe fitting fixing

Description POS. Description

11

12

13

14

15

16

17

18

19

20

Fluid recirculation pipe

Material suction pipe

Material suction filter

Fitting pipe fitting intake

Material pumping group

Material flexible pipe

Spray technology

Cable grounding with gripper

Gun AT250 - OPTIONAL

Gun L91 - OPTIONAL

1

3

2

4

6

7

8

9

10

11

12

13

14

15

16

17

18

5

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18

3

1

9

7

8

10

6

2

air

5

16

13

12

11

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D

19

Gun AT250

20

Gun L91

TRANSPORT AND UNPACKING

• Thepackedpartsshouldbehandledasindicatedinthe

symbols and markings on the outside of the packing.

• Beforeinstallingtheequipment,ensurethattheareato

be used is large enough for such purposes, is properly
lit and has a clean, smooth floor surface.

• Theuserisresponsiblefortheoperationsofunloading

and handling and should use the maximum care so as
not to damage the individual parts or injure anyone.

To perform the unloading operation, use only qualified

and trained personnel (truck and crane operators, etc.)
and also suitable hoisting equipment for the weight of

the installation or its parts.
Follow carefully all the safety rules.
The personnel must be equipped with the necessary

safety clothing.

• The manufacturer will not be responsible for the unlo-

ading operations and transport to the workplace of the

machine.

• Checkthepacking is undamaged on receipt of the

equipment. Unpack the machine and verify if there has
been any damage due to transportation.

In case of damage, call immediately LARIUS and the

Shipping Agent. All the notices about possible damage
or anomalies must arrive timely within 8 days at least
from the date of receipt of the plant through Registered
Letter to the Shipping Agent and to LARIUS.

• Thedisposal ofpackaging materialsisa customer’s

competence and must be performed in accordance with
the regulations in force in the country where the plant is
installed and used.It is nevertheless sound practice to
recycle packaging materials in an environment-friendly
manner as much as possible.

OPTIONAL OPTIONAL

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E

SAFETY RULES

•

THE EMPLOYER SHALL TRAIN ITS EMPLOYEES
ABOUT ALL THOSE RISKS STEMMING FROM ACCI

­DENTS, 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 IN THE
COUNTRY WHERE THE PLANT IS INSTALLED AND USED.

Read carefully and entirely the following
instructions before using the product. Please
save these instructions in a safe place.

The unauthorised tampering/replacement of
one or more parts composing the machine,
the use of accessories, tools, expendable
materials other than those recommended
by the Manufacturer can be a danger of
accident.
The Manufacturer will be relieved from tort

and criminal liability.

• 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
DAMAGED 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
EQUIPMENT 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
STANDARD 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.

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.
The gun is earthed through the high pressure flexible hose.
All the conductors near the work area must be earthed.

• NEVER SPRAY OVER FLAMMABLE PRODUCTS OR SOL-

VENTS IN CLOSED PLACES.

• NEVER USE THE TOOLING IN PRESENCE OF POTEN-

TIALLY 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 corrosion and
explosion.

Avoid approaching too much to the pump pi-

ston rod when the pump is working or under

pressure. A sudden movement of the piston

rod can cause wounds or finger squashing.

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TAKE PROPER SAFETY MEASURES FOR THE PROTECTION
OF HEARING IN CASE OF WORK NEAR THE PLANT.

F

SETTING-UP

CONNECTION TO THE FEED AIR

For pump feed use a hose (F1) with an internal diameter no
lower than 10 mm.

CONNECTION OF SUCTION AND RECIRCULATING PIPES

•Connect the suction and recirculating pipes to the pump.
The suction hose can be locked finger tight (F1). Use a spanner
to tighten the recirculating pipe (F2). In both cases do not use
sealant agents for fitting threads.

IF THE PRODUCT TO BE USED IS TOXIC, AVOID INHALATION
AND CONTACT BY USING PROTECTION GLOVES, GOGGLES
AND PROPER FACE SHIELDS.

F1

F2

F1

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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.

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 flexible hose (F3) to the pump
and to the spray gun, paying attention to tighten the fittings
strongly (the use of two spanners is suggested). Do not use
sealant agents for fitting 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 (F4) into the tank of the washing.

•Insert the recirculating pipe (F5) into a container (a metal

container is suggested).

•Open the recirculating cock (F6).

F5

F4

•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 recir­culating pipe. Close the recirculating cock (F6) as soon as the
clean solvent has come out.

•Lift the solvent tank’s suction tube.

•Lean the spray gun against the rim of the container (F7) 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.

F7

F3

F6

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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
perpendicular to it.

Never point the spray gun at your selves or at
other people. The contact with the cating can
cause serious injuries.

H

CLEANING AT THE END OF
THE WORK

• Lift the suction hose from the tank of the product.

• Reduce the pump feed pressure to about 3-4 bar and

open te recirculating cock so as to recover the product
left inside the equipment.

• Close the air passage valve for pump feed.

• 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.

• Remove the nozzle from the spray gun (Do not forget to
clean it using a solvent!).

• Dip the suction hose into the tank of the washing solvent
(ensure it is compatibile with the product being used).

• Insert the recirculating hose into a container (a metal con-
tainer is recommended).

• Open the recirculating cock.

• Open the air passage valve in order to start up the pump.

• Close the recirculating cock as soon as a clean solvent

comes out.

• Lift the solvent tank’s suction tube.

• 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 .

•

In case of long storage, we recommend you to suck and to leave
light mineral oil inside the pumping group and the flexible hose.

• In this case, please follow the washing procedure described
on page 8 before using the tooling.

Store possible dangerous fluids in proper
containers. Their disposal must be performed
in accordance with the regulations in force
about the industrial waste goods.

G

WORKING

• Use the machine after carrying out all the setting-up ope­rations described in the previous paragraph.

Check all the fittings for connection of the
different components (pump, flexible hose,
spray gun, etc.) before using the equipment.

• Use the supplied lubricant (G1 - 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 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 and recirculating pipes into the tank of the
product.

• Open the recirculating cock.

• Set the pump feed pressure at about 3-4 bar and open

the air passage valve.

• Allow the product to circulate for a few seconds. Then
close the recirculating cock. The pump will keep on working
until the high pressure flexible 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.

• 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

G1

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I

ROUTINE MAINTENANCE

Always close the compressed air supply and re­lease the pressure in the plant before performing
any check or maintenance of the pump.

RING NUT CHECK

• Check periodically (and every time the pump is operated
after a long storage) the packing nut is not loosened, cau-

sing otherwise the coming out of the product.
To tighten the packing nut (I1) use wrench supplied
(I2). 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.

MATERIAL SUCTION FILTER

• Remove and clean the material suction filter (I3).

HIGH PRESSURE FILTER CLEANING

• Remove and clean the high pressure filter for material
outlet (I4).

• Check periodically the air supply to the pump. Ensure the
air is always clean and lubricated.

At the start of each working day, make sure that the
ring (I1) 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.

MATERIAL SUCTION FILTER

MATERIAL OUTPUT FILTER

I3

I4

I2

Rif. 16340

I1