Durr EcoGun 651 Manual de usuario
II 2 GX
OPERATION MANUAL
EcoG
un
651
High-Pressure
Automatic Spraying Gun
This device is inTended for professional use. Before
commissioning The device please read This manual. inThe
case of incorrecT use of The spray gun, serious injury To
The user or damage To The device may occur.
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EcoGun 651
TABLE OF CONTENTS
SAFETY REGULATIONS 4
EQUIPMENT DESCRIPTION 5
TECHNICAL PARAMETERS 6
USE 7
COMMISSIONING 7
OPERATION 8
MAINTENANCE AND CLEANING 10
SAFETY OF OPERATION 12
TESTING OF PRODUCTS 12
PACKING OF PRODUCTS 12
DISPOSAL 12
WARRANTY TERMS 12
TROUBLESHOOTING 13
SPECIFICATION OF COMPONENTS - EST 651 14
DIAGRAM OF COMPONENTS OF THE GUN EST 651 15
DISPLAY OF COMPONENTS 16
DIMENSIONAL SKETCH 17
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EcoGun 651
SAFETY REGULATIONS
Earthing of the Equipment
Due to ow rate of the liquid at the high spraying pressure the
electro-static charge may be developed on the spraying gun under
certain circumstances. It may result in sparks of ames due to
discharging. To prevent this phenomena the spraying device must be
earthed. In addition the conductive connection (potential equalizing
cable) must be installed between the high-pressure device and the
gun during processing of the materials with the ignition point below
21°C (NITRO etc.).
Resistance to Pressure
All elements forming part of the high-pressure section of the
automatic spraying gun comply by their operating pressure with the
maximum pressure specied by the technical parameters.
Manipulation with High-Pressure Valve
The high-pressure gun operates with very high pressures.
Therefore never put your hand and/or ngers before the gun and
never focus the gun to the body. During assembly or disassembly of
the nozzle, resp. during cleaning or during any interruption of the
work proceed very carefully and secure the gun to prevent accidental
start (disconnection of the control air). This is to prevent accidental
start of the gun and possible subsequent injury.
Injury of Operator
The injury caused by the high-pressure liquid may be very serious.
In case of injury immediately seek the doctor and notify him/her on
type of material causing the injury.
Personal Protection at Work
During spraying and handling with the application materials, as
well as during cleaning of the equipment adhere to instructions of
manufacturers of the materials; use suitable personal protective
equipments (clothes, gloves, respirators, protection masks, resp.
breathing devices, protecting creams etc.) to protect the skin and
respiration tracts.
Although very small amount of fog is generated during the high-
pressure spraying, the spraying procedure cannot be considered for
the fog-free one. Even if the air contains very low number of the
particles, it is necessary to exhaust the solvent vapours, which are
especially dangerous.
Equipment Cleaning
During cleaning of the equipment with the ammable liquids it is
necessary to prevent the back-spraying into the closed vessel, as the
liquid stream can produce the explosive mixture of the gas and air.
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EcoGun 651
Workplace
Relevant standards apply to spraying and handling with the
ammable liquids. Regarding the ammability class of the coating
materials the areas and rooms, where the coating materials are
used, must be marked and modied in compliance with applicable
standards and regulations.
When the guns are used and operated in other countries, the
local standards and regulations apply.
EQUIPMENT DESCRIPTION
The automatic high-pressure spraying gun EcoGun 651 is designed
to application of the liquids by pressure supply. The gun consists
from two functional parts:
»Front part of the gun mechanical sections consists from stainless
coating substance (hereinafter referred to as NH) distribution
box with needle sealing to prevent leak of the pressure supplied
NH. The connecting angle-adjustable tting for the NH is tted
with the M14x1.5 thread. The second inlet of the NH is blinded
by the G1/8“ plug; when the plug is replaced with the NH
circulation line (not part of the supply), the NH circulation is
enabled (used for heavier NH etc.).
»The back part of the gun mechanical section consists from the
Duralumin body with pneumatic cylinder for opening (closing) of
the needle valve. The valve is opened by supply of the pressure
control air 5 bars before the piston by the 6 mm diameter hose.
Outlet of the pressure NH is closed by release of the air before
the piston to the atmosphere. The control air is separately
controlled by means of the three-way electro-magnetic valve.
In addition, the gun is tted with the holder with 10 mm hole for
xing to the handling device.
CAUTION
All workers assigned to operation and maintenance of the device must be
provably acquainted with the safety regulations and with the device operation
and maintenance manual!
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EcoGun 651
TECHNICAL PARAMETERS
Maximum gun power (acc. to the nozzle used) . 30 ÷ 250 l/h
Max. NH operating pressure.................................. 300 bar
Recommended control air pressure ............................5 bar
(Control) Air quality:
– Max. due point .....................................................+3°C
– Max. oil content............................................. 25 mg/m3
– Max. size of solid particles.................................... 40 μm
NH connecting thread size .................................. M 14x1,5
Control air connecting size (insertion coupling) ...................
.......................................... to connect the ø 6.0x4.0 hose
Max. gun control rate........................... 3-times per second
Gun weight (without nozzle) ....................................563 g
Connecting threads in the gun body .........................G 1/8“
Noise level.........................................................75 dB(A)
Ambient temperature................................ +5°C až +40°C
Environment classication
Noise Level
The noise level depends on the nozzle system size and on the inlet
pressure value. The noise level of the gun reaches up to 75 dB(A).
Acc. to the act no. 272/2011 Coll., the maximum allowed noise level
is 85 dB(A).
II 2 GX
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EcoGun 651
USE
The automatic high-pressure spraying gun EcoGun 651 is intended
to surface treatment of the products by the high-pressure spraying
of commonly used NH, even the water-born materials. During the
work procedure, the sprayed material is atomized under the high-
pressure up to 300 bars. It can be used even for spraying of other
materials, which do not damage the spraying gun materials by their
composition. The gun is designed to remote control by the pressure
air controlled by the three-way electro-magnetic valve. It can be
used for all spraying devices of the VYZA type so-far produced in
Dürr Systems Czech Republic a.s., which do not exceed the HN max.
operating pressure. When other high-pressure devices are to be
used, the operation of the automatic gun must be consulted in the
manufacturing plant in advance. The gun is intended for equipment
of the automatic production lines and enables also interruption of
the spraying regarding the shape of the sprayed object and the
production line cycle. Combination of the high pressure of the NH and
the special high-pressure nozzle results in even layer of the applied
NH with minimum y-out of small particles to the environment. The
nozzle suitable for the particular application must be selected on
basis of previous tests and recommendation of the manufacturer.
COMMISSIONING
Before commissioning of the gun, the preservation grease must be
removed from the surface by suitable degreaser. Internal section
must be ushed out by the pressure solvent connected to the inlet
angle-adjustable tting for the NH and opening of the needle valve
with subsequent injection of the pressure control air 5 bar.
Upon cleaning the gun is tted with suitable high-pressure nozzle or
with the holder tted with the rotating nozzle. The nozzle is tted
directly to the cup nut with protecting cover, which forms part of
the gun; the rotating nozzle is xed to the holder, which is installed
directly to the gun upon screwing of the cup nut with protecting
cover.
The assembled gun is xed to the manipulator through the holder,
connected to the pressure control air 5 bar through the three-way
electromagnetic valve of ow ca 150 l/min. and the NH supply from
the high-pressure device; then tighten the cut nut on the NH angle-
adjustable tting. The hose must be electro-static conductive for
transport of the ammable liquids. In case of handling with the NH of
quicker sedimentation rate, which requires circulation, the circulation
high-pressure hose can be connected by unscrewing the plug in the
gun front section and tting of the NH circulation line (not part of the
supply). The general connection is done acc. to the wiring diagram.
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EcoGun 651
CAUTION
Relevant standards apply to spraying and handling with the ammable liquids.
Regarding the ammability class of the coating materials the areas and rooms,
where the coating materials are used, must be marked and modied in compliance
with applicable standards and regulations. The gun earthing is implemented via
the high-pressure hose from the equipment, however with application materials
of the ignition point below 21°C (NITRO etc.) or with materials, which are heated
to values exceeding the ignition temperature due to operational reasons, an
additional earthing is recommended by the potential equalizing cable (use the
metal conductor, optimally the steel rope of ø 5 mm, resp. copper wire min.
4 mm2).
OPERATION
1. The fault-free operation of the gun depends on preparation
of NH. Devote maximum care to mixing, treating to optimum
viscosity and ltration of the NH. Use of the proper solvent is
crucial for dilution of the NH and cleaning of the gun.
2. Select the nozzle type acc. to the shape and dimension of
the object, the NH type and viscosity (suitable nozzle can be
recommended by OTS of the manufacturing plant).
3. The optimum NH operation pressure is selected on basis of the
test spraying by the selected nozzle (onto the white paper), see
the high-pressure device operation manual. Selection of proper
operating pressure is crucial to the operation life of the gun,
and particularly the high-pressure nozzles. Do not exceed the
indispensable pressure!
4. If the nozzle hole is clogged, wash it in clean solvent and remove
the contaminants causing the clogging by the air jet. Cleaning of
the rotating nozzles is much simpler: remove the contaminants
by rotation and ushing and put the nozzle back to operation by
turning back. During cleaning or any manipulation do not turn
the gun against yourself or any other person, lock the supply of
the NH and pressure control air.
5. On long-term interruption of the work or when other type of
the NH us used, clean the gun internal section by pumping the
solvent applicable to the sprayed NH into the high-pressure
section instead of the NH. After approx. 5 minutes, when the
solvent dissolves the residual NH, ush the gun by pulses and
observe the solvent colour. When the solvent without traces of
formerly used starts to outlet, the gun is clean and ready for
other use.
6. Even on short-term interruption of the work, immerse the gun
neck, as well as the used nozzles, to the vessel with solvent.
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EcoGun 651
7. Daily on completion of works clean the gun and ush it acc. to
procedure specied in paragraph 5.
NH Filtration
Standard spraying gun is not tted with the NH lter, for proper
function is thus necessary to ensure perfect ltering of the application
material before inlet to the gun (e.g. F50 lter with the same
replaceable lter cartridge). Size of the lter cartridge in relation to
the nozzle equivalent size is specied in this reference table.
NOZZLE
EQUIVALENT SIZE
IN 0.1MM
FILTER SIEVE SIZE
MESH
USE
from 16 200 (74 µm) pickle, glazing, clear
lacquer, articial-resin
lacquer
25 - 30 100 (149 µm) primer, effect lacquer,
llers, marking paint
from 40 60 (250 µm) dispersion, latex,
acrylic paint,
polyurethane paint
Daily clean the lter and cartridges as needed, particularly on change
to other NH. Do not let the contaminated lter cartridge dry-up after
removal from the lter, as the NH residuals cannot be removed. The
cartridge must be immersed into proper solvent immediately after
removal from the lter.
The NH lter, which is installed directly to the angle-adjustable NH
tting on the gun, is optionally available. This lter is tted with the
MASCHEN sieve 200, 100 or 50. It is also possible to select the NH
tting thread size between M14x1.5 or G1/4“.
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EcoGun 651
MAINTENANCE AND CLEANING
1. Pressure air free of water, oil and mechanical impurities must be
used for the gun control.
2. Do not let the NH dry-up in the gun and/or surface. Removal of
the dry-up HN is difcult and it can result in damage of smooth
surface of the part and thus more difcult next cleaning (NH is
easy collected on the damaged surface). Cleaning must be done
by washing with proper solvent, not by immersion into the gun,
as it can adversely affect function and operation life of the gun.
3. When the high-pressure nozzle hole is clogged, do not clean it
by any metal objects, such as wires, pins, use instead special
cleaning wires, or clean the device acc. to instructions specied
in section „Operation“, point 4.
4. When the NH with rough pigments is sprayed, it is necessary to
check the sealing of the closing needle at least once in the shift;
the leak results in discharge of the NH from the hole between
front and back section of the gun body. When the NH leaks
from the hole, the gun must be disassembled and the sealing
module, resp. worn needle must be replaced.
»The replacing is performed as follows: Unscrew the body with
carbide seat (15). Unscrew the stop nut (10) from the back
section and remove the spring (7). With the supplied key
unscrew the closing needle (14), secure the opening needle (6)
by the key in the back section. Remove the opening needle
with the piston backward. Disassemble the 4 screws (11) and
separate the front section from the back one. Press the sealing
module (12) out by means of the supplied key. Upon cleaning of
the sealing module area the disassembly is completed. Visually
check the needle for damage in the contact area with the sealing
elements of the sealing modules, resp. replace the needle for
the new one. Assembly of the new sealing modules requires
skills and care to prevent cutting of both sealing O-rings of
the modules. Apply the machine oil to the module and press it
carefully completely into the gun body. Apply the machine oil
onto the needle with piston, insert it carefully from the back
side to both sealing modules - do not apply force. Assemble the
other parts in reverse order specied in the previous section.
5. Disassembly of the individual gun parts, even if it is easy, shall
not be performed often and needlessly. The assembly works can
be done with common maintenance tools and supplied special
key. Replacing of spare parts of the gun must be assigned
exclusively to the qualied maintenance staff.
6. Keep the gun and other accessory in perfect cleanness, as it is
crucial for fault-free operation.
Este manual sirve para los siguientes modelos
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