Excalibur Larius Manual

OPERATING AND
MAINTENANCE INSTRUCTION
ENGLISH
OPERATING AND
MAINTENANCE INSTRUCTION
with optic sensor
with optic sensor
PAINTING EQUIPMENT


1
OPTIC EXCALIBUR
English
INTRODUCTION .................................................. p.1
WARNINGS .......................................................... p.2
WORKING PRINCIPLE ........................................ p.3
TECHNICAL DATA................................................ p.4
DESCRIPTION OF THE EQUIPMENT................. p.5
TRANSPORT AND UNPACKING ......................... p.6
SAFETY RULES................................................... p.6
Electrical safety precautions ............................ p.7
SETTING-UP........................................................ p.7
Connection of the flexible hose to the gun ....... p.7
Check on power supply.................................... p.8
Connection of the tooling to the power
supply............................................................... p.9
Washing of the new equipment........................ p.9
Preparation of the paint ................................... p.10
WORKING ............................................................ p.10
Start of the painting operations ........................ p.10
Spray adjustment ............................................. p.11
CLEANING AT THE END OF THE WORK ........... p.11
ROUTINE MAINTENANCE .................................. p.13
Check on the packing nut................................. p.13
WARNING PLATE ................................................ p.13
PROBLEMS AND SOLUTIONS ........................... p.14
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.
CORRECT PROCEDURE OF
DECOMPRESSION.............................................. p.15
REPLACING THE GASKET KIT AND SETTING
THE HYDRAULIC PRESSURE SWITCH............. p.16
Refitting and setting procedure ........................ p.17
REPLACEMENT OF THE PUMPING
GROUP’S GASKETS ........................................... p.19
Pit stop maintenance........................................ p.20
Replacing the foot valve seals.......................... p.20
Replacing the pump unit housing gasket ......... p.21
Replacing the pump unit stem gasket.............. p.23
Correct positioning of the pump unit ................ p.26
SPARE PARTS
COMPLETE ELECTRO-HYDRAULIC
DEVICE REF. 18639 AND 18639/110 .................. p.30
COMPLETE PUMPING GROUP.......................... p.32
RECIRCULATING-SAFETY VALVE GROUP
REF. 16400 ........................................................... p.34
DRIVE ASSEMBLY............................................... p.35
ELECTRIC MOTOR.............................................. p.36
ACCESSORIES.................................................... p.37
VERSIONS ........................................................... p.42
ELECTRIC PISTON PUMP
ELECTRIC PISTON PUMP
A
B
C
D
E
F
G
H
L
N
O
P
Q
R
S
T
I
J
K
U
M

2
OPTIC EXCALIBUR
English
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 care-
fully.
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 a fire or explosion risk if this warning is not followed.
Eliminate all ignition sources such as pilot lights, cigarettes, portable electric lamps and plastic drop cloths.
Keep work area free of debris.
ONLY use this equipment in a well ventilated area.
EARTH ALL THE EQUIPMENT LOCATED IN THE WORK AREA.
Do not form connections or switch light switches on or off if the air contains inflammable fumes.
If electrical shocks or discharges are encountered the operation being carried out using the equipment must be stopped immedia-
tely.
Keep a fire extinguisher at hand in the immediate vicinity of the work area.
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.
Report any danger of electric shock if the warning and presence of live electrical parts has not been indicated.
Store in a dry place and do not expose to the rain.
Check that the cables are in good condition.
Switch off the equipment and discharge any electricity before cleaning or maintaining the equipment.
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 earthed and that it complies with safety standards.
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.

3
OPTIC EXCALIBUR
English
A
WORKING PRINCIPLE
The LARIUS EXCALIBUR unit is defined “electric piston pump”.
An electric piston pump is used for high pressure painting without
air (from this process derives the term ”airless”).
The pump is controlled by an electric motor coupled with a re-
duction gear.
A cam shaft and a connecting rod allow to obtain the reciprocating
motion necessary to the working of the “pumping group” piston.
The piston movement produces a “vacuum”.
The product is sucked, pushed towards the pump outlet and then
sent to the gun through the flexible hose.
A mechanical device on the side of the reduction gear casing,
allows to adjust and control the pressure of the material coming
out of the pump.
When the pump reaches the set value, the motor stops and starts
again when the value decreases.
A safety valve avoiding overpressure, guarantees the total reliability
of the equipment.
Indoor
Outdoor
Industrial buildings
Industrial constructions
Redeveloping
Roofing
Fields of application
Lacquer
Waterborne
Acrylic
Enamels
Fixative
Applications materials
Paints
Emulsions
Fillers
Primer
Frame mounted
Trolley mounted

4
OPTIC EXCALIBUR
English
Trolley mounted
B
*Available on request with special voltages
PARTS OF THE PUMP IN CONTACT WITH THE MATERIAL Stainless Steel AISI 420B, Teflon; Aluminium
Frame mounted
SUPPLY (single-phase)*
RUN GENERATOR SUPPLY
MOTOR POWER
MAX. WORKING PRESSURE
MAX. DELIVERY
MATERIAL OUTLET
WEIGHT
LEVEL OF THE SOUND PRESSURE
LENGTH
WIDTH
HEIGHT
230Vac - 50Hz
minimum 4Kw asynchronous
0,75 kW
210 bar
2,1 L/min
M16 x 1,5 (M)
17 Kg
≤80dB(A)
(A) 450 mm
(B) 460 mm
(C) 550 mm
TECHNICAL DATA
EXCALIBUR
230Vac - 50Hz
minimum 4Kw asynchronous
0,75 kW
210 bar
2,1 L/min
M16 x 1,5 (M)
18 Kg
≤80dB(A)
(A) 580 mm
(B) 540 mm
(C) 995 mm
C
A
B
C
A
B

5
OPTIC EXCALIBUR
English
CDESCRIPTION OF THE EQUIPMENT
POS.
1
2
3
4
5
POS.
6
7
8
9
ON/OFF switch
Pressure control knob
Reduction box
Pumping group
High pressure flexible pipe of compensation
Description
Suction filter
Safety-recirculation valve
Airless manual gun
Trigger safety clamp
Description
5
7
2
7
6
4
1
2
3
9
8

6
OPTIC EXCALIBUR
English
D
E
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 manufacturer will not be responsible for the unloa-
ding 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 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 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
.
SAFETY RULES
•THE EMPLOYER SHALL TRAIN ITS EMPLOYEES ABOUT
ALLTHOSE RISKS STEMMING FROM ACCIDENTS, ABOUT
THE USE OF SAFETY DEVICES FORTHEIR 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.
Read carefully and entirely the following instruc-
tions 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
WHEREYOU AREWORKING 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 PRO-
PERLY.
• 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 BYTHE GUN CASTING, SEEK IMMEDIATE MEDI-
CAL 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 INTHE 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. RE-
PLACE THE PARTS DAMAGED OR WORN.
•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.

7
OPTIC EXCALIBUR
English
FSETTING-UP
CONNECTION OF THE FLEXIBLE HOSE TO THE GUN
• Connect the high pressure flexible hose
(F1)
to the pump
(F2)
and to the gun
(F3)
ensuring to tighten the fittings (the use of
two wrenches is suggested)
.
NEVER use sealants on fittings’ threads
.
It is ADVISED to mount a high pressure manometer at the
pump outlet (see on page “Accessories”) to read the product
pressure
.
• It is recommended to use the hose provided with the standard
kit (ref. 18036).
NEVER use a damaged or a repaired flexible hose.
• NEVER SPRAY OVER FLAMMABLE PRODUCTS OR SOL-
VENTS IN CLOSED PLACES.
• NEVER USE THE TOOLING IN PRESENCE OF POTEN-
TIALLY EXPLOSIVE GAS.
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.
Always check 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 sol-
vents 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.
• TIGHTEN AND CHECK ALLTHE FITTINGS FOR CONNEC-
TION 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.
IF THE PRODUCT TO BE USED IS TOXIC, AVOID
INHALATION AND CONTACT BY USING PRO-
TECTION GLOVES, GOGGLES AND PROPER
FACE SHIELDS.
TAKE PROPER SAFETY MEASURES FOR THE
PROTECTION OF HEARING IN CASE OF WORK
NEAR THE PLANT.
Electrical safety precautions
• Check the switch is on the "OFF" position before connecting
the cable to the mains
.
• Never carry a plugged-in equipment.
• Disconnect the equipment before storing it and before
performing any maintenance operation or replacing of ac-
cessories.
• Do not carry the equipment neither unplug it by pulling the
electric cable.
• Protect the cable from heat, oil and sharp edges.
• When the tool is used outdoors, use only an extension cable
suited for outdoor use and so marked.
• Take care when the pumping rod is moving.
Stop the machine whenever someone is within its vicinity.
• Repairs of the electrical equipment should only be carried
out by skilled personnel, otherwise considerabledanger to
the user may result.
Never attempt to tamper with the calibre of in-
struments.

8
OPTIC EXCALIBUR
English
•Check the mains voltage corresponds to the equipment’s
rating.
•The supply cable is provided without plug.
Use a plug which guarantees the plant earthing.
Only a technician or a skilled person should perform the
connection of the plug to the electric cable.
CHECK ON POWER SUPPLY
Make sure that the electrical system is earthed and
complies with regulations.
Voltage
F2
F3
F1

9
OPTIC EXCALIBUR
English
CONNECTION OF THE TOOLING TO THE POWER SUPPLY
• Check the switch (F4) is on the “OFF”(0) position before
connecting the cable to the mains.
• Place the pressure control knob (F5) on the “MIN” position
(turn counterclockwise).
Should anyone use an extension cable between
the tooling and the socket, it must have the same
characteristics as the cable supplied (minimum
diameter of the wire 2.5 mm2)with a maximum
length of 50 mt.Higher lengths and lower diameters
can provoke excessive voltage falls and also an
anomalous working of the equipment
• Lift the suction pipe and dip it into the solvent tank.
• Ensure the gun (F3) is without nozzle.
• Press the switch (F4) of the equipment “ON” (I).
• Turn clockwise the pressure control knob (F5) so as the
machine works at idle speed.
WASHING OF THE NEW EQUIPMENT
• The equipment has already been adjusted at our factory with
light mineral oil left inside the pumping group as protection.
Therefore, wash with diluent before sucking the product.
F4
OFF
F5
F3
F4 F5
ON

10
OPTIC EXCALIBUR
English
• Remove the suction pipe and take away the solvent tank.
• Point the gun into the solvent tank and press the trigger so
as to recover the residual solvent.
• As the pump idles, press the “OFF” (0) switch to stop the
tooling.
• Now the machine is ready. Should you use water paints,
besides the solvent wash, a wash with soapy and then clean
water is suggested.
• Insert the gun trigger lock and assemble the nozzle.
PREPARATION OF THE PAINT
• Make sure the product is suitable to be used with a spray
gun.
• Mix and filter the product before using it. For filtration, use
CLOSE-MESH (ref. 214) and LARGE-MESH (ref.215) LA-
RIUS METEX braids.
Absolutely avoid to spray solvents indoors. In
addition, it is recommended to keep away from
the pump in order to avoid the contact between
the solvent fumes and the electric motor.
Never use products containing halogen hydrocarbons (as methylene
chloride). If these products come into contact with aluminium parts
of the equipment, can provoke dangerous chemical reactions with
risk of explosion.
Make sure the product to be used is compatible
with the materials employed for manufacturing the
equipment (stainless steel and aluminium).
Because of that, please contact the supplier of the
product.
• Point the gun (F6) into a container (F7) keeping the trigger
pressed (so as to drain the oil inside) till a clean solvent comes
out. Now, release the trigger.
GWORKING
START OF THE PAINTING OPERATIONS
• Use the tooling after performing all the SETTING UP ope-
rations above described.
• Dip the suction pipe (G1) into the product tank.
• Open the recirculating-safety valve (G2) (turn clockwise so
as the pin slides on the cam track).
F6
F7
Delivery pipe
G1
G2
G4

11
OPTIC EXCALIBUR
English
• Make sure the product recycles from the return tube (G4).
• Close the recirculating-safety valve (G5) (turn clockwise till
the valve has released).
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.
Recirculating-safety valve: when working at the
maximum pressure available, releasing the gun
trigger sudden increases of pressure can occur.
In this case, the recirculating-safety valve opens
automatically eliminating part of the product from
the recirculating tube.
Then it closes so as to go back to the first working
conditions.
HCLEANING AT THE END
OF THE WORK
•Reduce pressure to the minimum (turn counterclockwise the
pressure control knob (H1) ).
•Press the switch (H2) placed on the box of the electric motor,
to stop the equipment.
• Press the switch “ON” (I) of the equipment and turn a little
the pressure control knob clockwise (G3), so as the machine
works at the idle speed.
SPRAY ADJUSTMENT
• Slowly turn clockwise the pressure control knob to reach the
pressure value in order to ensure 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 overthickness 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 gun and the
support to be painted and also keep yourselves perpendicular
to it.
• Now the machine carries on sucking the product till the flexible
hose is full, up to the gun.
Then it will stop automatically.
G3
G5

12
OPTIC EXCALIBUR
English
• Lift again the suction pipe and remove the solvent tank.
• Now point the gun into the solvent tank and press the trigger
so as to recover the residual solvent.
•As the pump starts idling, press the switch OFF (0) to
stop the equipment.
• In case of long storage, we recommend you to suck and to
leave light mineral oil inside the pumping group and the flexible
hose.
Follow the washing procedure before using again
the equipment.
• Open the recirculating-safety valve (H3) to release the pressure
in the circuit.
• Lift the suction pipe and replace the product tank with that
of the solvent (ensure it is compatible with the product being
used).
• Unscrew the gun nozzle (do not forget to clean it with sol-
vent).
•Press the switch (H2) ON and turn a little the pressure
control knob (H1) clockwise so as the machine works till
the motor starts.
• Make sure the solvent recycles the washing fluid from the
return tube.
• Close the recirculating-safety valve (H3).
• Point the gun (H4) into the product tank (H5) and, keeping
the trigger pressed, release the remaining product till a clean
solvent comes out. Now, release the trigger.
OpenClose
H3H3
H4
H5
H3
OFF
H2
H1
-

13
OPTIC EXCALIBUR
English
Apparecchi per verniciatura
ATTENZIONE
UTILIZZARE GRUPPI ELETTROGENI
CON ALTERNATORE ASINCRONO
http: www.larius.com
Paint spraying units
WARNING
USE POWER UNITS WITH
ASYNCHRONOUS ALTERNATOR
e-mail larius@larius.com
IROUTINE MAINTENANCE
CHECK ON THE PACKING NUT
Daily check the packing nut is tight in order to avoid wastes but
not excessively to prevent the piston from seizing and the
gaskets from wearing.
• For tightening, use the wrench supplied (ref. 11503).
WARNING PLATE
J
Minimum power available: 4 kW single-phase, asynchronous
• Use the lubricant supplied (ref.16325) to allow an easy sliding
of the piston inside the gasket group.
Daily top up the packing nut.
ALWAYS DISCONNECT THE POWER SUPPLY
AND RELEASE THE PRESSURE IN THE PUMPING
GROUP (open the drain valve) BEFORE TIGHTE-
NING THE PACKING NUT
.
Ref. 11503
Dowel
Oil ring
Ref. 16325

14
OPTIC EXCALIBUR
English
K
Always close the air compressed supply and unload the plant pressure before performing any check or replace-
ment of pump parts (see "correct procedure of decompression").
PROBLEMS AND SOLUTIONS
Solution
Cause
Problem
• The equipment does not start
• The equipment does not suck the
product
• The equipment sucks but does not
reach the pressure desired
• When pressing the trigger, the
pressure lowers considerably
• The pressure is normal but the
product is not atomized
• The atomization is imperfect
•
When releasing the trigger of the
gun, the equipment does not stop
(the motor runs slowly and the
piston rod keeps on going up and
down)
• Lack of voltage;
• Considerable drops in mains voltage;
• On/Off switch disconnected;
• Breakdown of pressure transmitter;
•
Breakdown of motor electric control box;
• The line of material coming out of the
pump is already under pressure;
• The product is solidified inside the
pump;
• Suction filter clogged;
• Suction ilter too fine;
• The equipment sucks air;
• Lack of product;
• The equipment sucks air;
• The recirculating-safety valve is
open;
• The gaskets of the pumping group are
worn;
• Suction or delivery valve dirty;
• Nozzle too big or worn;
• The product is too dense;
• The filter of the gun-butt is too fine;
• The nozzle is partially clogged;
• The product is too dense;
• The filter of the gun-butt is too fine;
• The nozzle is worn;
• The gaskets of the pumping group are
worn;
• Suction or delivery valve dirty;
• Recirculating-safety valve defective;
• Check the correct connection to the
power supply;
• Check the extension cable;
• Ensure the On/Off switch is on the
“on” position and turn clockwise the
pressure control knob;
• Verify and replace it, if necessary;
• Verify and replace it, if necessary;
• Open the drain valve to release
pressure in the circuit;
• Open the drain valve to release
pressure in the circuit and stop the
machine.Disassemble the pumping
group and the pressure transmitter
and clean;
• Clean or replace it;
• Replace it with a larger-mesh filter
(with very dense products, remove
the filter);
• Check the suction pipe;
• Add the product;
• Check the suction pipe;
• Close the recirculating-safety val-
ve;
• Replace the gaskets;
• Disassemble the pumping group;
• Replace it with a smaller one;
• Dilute the product, if possible;
• Replace it with a larger-mesh filter;
• Clean or replace it;
• Dilute the product, if possible;
• Replace it with a larger-mesh filter;
• Replace it;
• Replace the gaskets;
• Disassemble the pumping group and
clean;
• Verify and replace it, if necessary;

15
OPTIC EXCALIBUR
English
LCORRECT PROCEDURE OF
DECOMPRESSION
• Insert the gun clamp (L1).
• Move the switch (L2) to the OFF position to stop the equip-
ment.
• Disconnect the power supply cable (L3).
• Release the gun clamp (L1), point the gun into the tank of
the product and press the trigger to release pressure. At the
end of the operation, insert the gun clamp.
• Open the recirculating-safety valve (L4) to release the residual
pressure always clockwise.
WARNING :
If the equipment is still under pressure after per-
forming the operations above described because
of the nozzle or the flexible hose clogged, proceed
as follows:
• Loosen very slowly the gun nozzle.
• Release the clamp.
• Point the gun into the container of the product
and press the trigger to release pressure.
• Loosen very slowly the fitting of connection
from the flexible hose to the gun
.
• Clean or replace the flexible hose and the
nozzle.
L3
L4
L1
Clamp inserted
Clamp released
L2
OFF

16
OPTIC EXCALIBUR
English
MREPLACING THE GASKET KIT
AND SETTING THE HYDRAU-
LIC PRESSURE SWITCH
•Open the recirculating-safety valve (M4) by turning it clockwise
(make a 1/2 turn and put the knob in the raised position);
•Use a marking pen to mark the position of the ring nut (M5)
on the threaded section (M6);
•Drain the liquid that is still pressurised into the product collec-
tion container (M2) using the gun (M3) until it is completely
decompressed (the reading on the pressure gauge must be
0 bar);
Release the pressure in the hydraulic circuit by
turning the knob on the pressure switch (M1) as
far as possible (turn anticlockwise).
The ring nut (M5) will be used as a point of reference
for subsequent assembly and setting.
-
Reference mark
M1
M3
M2
M5
M6
M4

17
OPTIC EXCALIBUR
English
•Loosen the ring nut (M5) using a 30 mm spanner (M7). The
ring nut (M5) must only be loosened enough to allow disas-
sembly;
•Unscrew the entire pressure switch unit (M8);
REFITTING AND SETTING PROCEDURE
•While the unit is still disassembled turn the setting knob (M1)
clockwise to tighten it, until it is at the end of its thread;
•Refit the unit (M8) in its original position;
•Check gaskets (a), (b), (c) and (d), and replace if necessary.
Grease the gaskets using Vaseline;
The ring nut (M5) must be in the position marked
before it was disassembled.
OpenClose
M4M4
M5 M7
M8
d
Ref. 11955
b
Ref. 18554
a
Ref. 18755
M1
M5
c
Ref. 18553
Reference mark

18
OPTIC EXCALIBUR
English
200
210
200
210
200
210
•Unscrew the knob (M1) by 1/2 a turn and release the pressure
in the pistol in two bursts;
•Check that the reading on the pressure gauge is correct (200
– 210 bar);
•Tighten the ring nut (M5) well, using a 30 mm spanner.
•Complete the operating procedure as described in paragraph
“G” of this manual;
•Wait for the machine to reach maximum pressure and stop.
Use the pistol to spray a few bursts into the paint container
and then check the reading on the pressure gauge;
YES
If the reading on the pressure is not as indicated, proceed as
follows:
Value lower than 200 bar
NO
NO
•Loosen the ring nut (M5) by 1/2 a turn and tighten the knob
(M1) all the way;
•Check the pressure again as described in the previous points,
and repeat the process until the correct pressure reading is
obtained (200 – 210 bar);
•Tighten the ring nut (M5) well, using a 30 mm spanner;
Value higher than 210 bar
The pressure gauge reading must be 200 - 210
bar max.
Pressures exceeding 210 bar compromise the
correct functioning of the machine and are of no
use as the safety valve is set to release pressures
exceeding 210 bar.
Reference mark
Reference mark
M5
M1
M12
M13
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