DÖRR EcoGun 246 User manual

MSG00018EN, V02
N36200008V
www.durr.com
Operation manual
EcoGun 246
Manual spray boiler pistol

Information about the document
This document describes the correct han-
dling of the product.
nRead the document prior to every activity.
nPrepare the document for the application.
nPass on the product only together with
the complete documentation.
nAlways follow safety instructions, han-
dling instructions and specifications of
every kind.
nIllustrations can deviate from the tech-
nical construction.
Validity range of the document
This document describes the following prod-
ucts:
N36200008V
EcoGun 246
Hotline and Contact
If you have queries or would like technical
information, please contact your dealer or
sales partner.
06/2023
EcoGun 246 - MSG00018EN2/48

TABLE OF CONTENTS
1 Product overview.......................... 4
1.1 Overview................................ 4
1.2 Short description.................... 4
2 Safety............................................. 4
2.1 Presentation of Notes............. 4
2.2 Intended Use.......................... 5
2.3 Residual risks......................... 6
2.4 Staff qualification.................... 7
2.5 Personal protective equip-
ment....................................... 7
3 Transport, scope of supply and
storage........................................... 8
3.1 Scope of delivery.................... 8
3.2 Handling of
packaging material................. 8
3.3 Storage................................... 8
4 Assembly....................................... 8
4.1 Requirements for the
Installation point..................... 8
4.2 Assembly................................ 9
5 Commissioning............................. 9
6 Operation..................................... 11
6.1 Safety recommendations...... 11
6.2 General notes....................... 11
6.3 Selecting air cap................... 11
6.4 Changing the air cap............ 12
6.5 Alignment of the air cap........ 12
6.6 Guiding the spray gun.......... 13
6.7 Purging................................. 13
6.7.1 Safety recommendations... 13
6.7.2 General notes.................... 13
6.7.3 Purging spray gun............. 13
7 Cleaning....................................... 15
7.1 Safety recommendations...... 15
7.2 Cleaning............................... 16
8 Maintenance................................ 17
8.1 Maintenance schedule......... 17
8.2 Lubrication............................ 18
9 Faults............................................ 18
9.1 Safety recommendations ..... 18
9.2 Defects table........................ 20
9.3 Troubleshooting.................... 22
9.3.1 Replace needle and
nozzle................................ 22
9.3.2 Replace valve set.............. 24
9.3.3 Replace needle gland........ 27
10 Disassembly and Disposal......... 28
10.1 Safety recommendations.... 28
10.2 Disassembly....................... 29
10.3 Disposal ............................. 29
11 Technical data............................. 29
11.1 Weight................................ 29
11.2 Connections........................ 29
11.3 Operating conditions........... 29
11.4 Emissions........................... 29
11.5 Operating values................ 30
11.6 Compressed air quality....... 30
11.7 Type plate........................... 30
11.8 Materials used.................... 30
11.9 Operating and auxiliary
materials............................. 30
11.10 Material specification........... 30
12 Spare parts, tools and accesso-
ries................................................ 31
12.1 Spare parts......................... 31
12.2 Tools................................... 36
12.3 Accessories........................ 37
12.4 Order.................................. 44
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1 Product overview
1.1 Overview
Fig. 1: Overview
1 Air cap
2 Cap nut
3 Flat jet control
4 Air control
5 Material flow control
6 Air connection
7 Trigger
8 Material connection
1.2 Short description
The spray gun is intended for surface
coating. Compressed air is used to apply
material. The coating material is fed through
lines. The spray gun is handheld.
Use a suitable nozzle set with air cap,
depending on the requirement Ä 6.3
“Selecting air cap”.
The following factors influence the spray jet
and the result:
nAlignment of the air cap Ä 6.5 “Alignment
of the air cap”
nMaterial flow Ä 5 “Commissioning”
nAir pressure Ä 5 “Commissioning”
nHorn air pressure Ä 5 “Commissioning”
The spray gun uses a self-adjusting needle
package. The needle gland automatically
adjusts for the material-related wear of the
needle gland. In addition, the needle packing
can be readjusted mechanically.
2 Safety
2.1 Presentation of Notes
The following notes can appear in this
instruction:
DANGER!
High risk situation that can lead to serious
injuries or death.
WARNING!
Medium risk situation that can lead to
serious injuries or death.
CAUTION!
Low risk situations that can lead to minor
injuries.
Product overview
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NOTICE!
Situations that can lead to material
damage.
ENVIRONMENT!
Situations that can lead to environmental
damage.
Additional information and recom-
mendations.
2.2 Intended Use
The EcoGun 246 spray gun is used exclu-
sively for manual coating of surfaces. Com-
pressed air is used to apply material.
The material is fed through a low pressure
line.
The EcoGun 246 spray gun is only intended
for use in industry and craftmanship.
The use is only permitted within the specified
technical data Ä 11 “Technical data”.
The spray gun is approved for use in explo-
sive areas of Ex zones 1 and 2.
Misuse
Not using as intended entails danger to life.
Examples of wrong use are:
nAiming the spray gun at humans or ani-
mals.
nUse of unapproved materials
nInstallation of unapproved components
and components that are not approved
for operation by Dürr Systems.
nAtomize liquid nitrogen.
nConduct work on the application device
without the recommended personal pro-
tective equipment.
nUse in areas with Ex zone 0
nMaking conversions or changes on your
own.
Ex labeling
II 2G T60°C X
II - Device group II: all areas except
mining
2G - Device category 2 for gas
T60 °C - Surface temperature, max. 60°C
X - Specific operating conditions for
safe operation
The following conditions must be observed
for safe operation:
nGround spray gun and work piece.
nOnly use conductive air hoses.
nEnsure that static electricity can be dis-
charged.
nUse exclusively compressed air quick
couplings for water-based materials,
where it is not necessary to discharge
static electrical charges.
Safety
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2.3 Residual risks
Explosion
Sparks, open flames and hot surfaces can
cause explosions in explosive atmospheres.
Serious injury and death could be the conse-
quence.
nBefore carrying out any work, make sure
that there is no explosive atmosphere.
nDo not use sources of ignition and open
light.
nDo not smoke.
nGround the spray gun.
nGround the work piece.
nOnly use conductive lines.
Flammable coating materials and their deter-
gents and cleaning agents can cause a fire
or an explosion.
nEnsure that the flashpoint of the cleaning
agent is at least 15K above the ambient
temperature or clean Product at the
cleaning areas with active technical ven-
tilation, in painting booths, according to
EN 16985.
nNote explosion group of the fluid.
nFollow the safety data sheet.
nEnsure that forced ventilation and fire
protection equipment are in operation.
nDo not use sources of ignition and open
light.
nDo not smoke.
nGround the spray gun.
Danger from harmful or irritant sub-
stances
Serious injuries or death can result if you
come into contact with dangerous fluids or
steam.
nProduct Check regularly for leakage.
Observe local regulations and mainte-
nance schedule.
nEnsure that the forced ventilation is
operational.
nFollow the relevant safety data sheets.
nWear specified protective equipment.
Escaping material
Material escaping under pressure can cause
serious injuries.
Before working on the product:
nDisconnect the system, in which the
product is installed, from compressed air
and material supply.
nSecure system personalized from being
switched on again.
nDepressurize the lines.
Noise
The sound pressure level during operation
may cause severe hearing damage.
nWear ear protection.
nDo not spend more time then necessary
in the work area.
Hot surfaces
During operation, the surfaces of compo-
nents can get extremely hot. Contact with it
can cause burns.
nDo not touch hot surfaces.
nBefore carrying out any work:
– Let components cool down.
– Wear protective hand gloves.
Safety
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2.4 Staff qualification
WARNING!
Inadequate qualification
Wrong estimation of dangers can cause
serious injury or death.
nOnly sufficiently qualified persons may
execute all work.
nSome work requires additional qualifi-
cation. Additional qualifications of spe-
cialized personnel are marked with a
“+”.
This document is intended for qualified per-
sonnel in industry and craftmanship.
The following describes the different qualifi-
cations required for the work in this docu-
ment. The required qualification is presented
prior to the individual tasks in the appropriate
chapters.
Operator
The operator is trained specifically for the
field of work in which he works.
Furthermore, the operator possesses the fol-
lowing knowledge:
nTechnical Measures for occupational
safety and health
The operator is responsible for the following
work:
nOperate and monitor the system/ product.
nIntroduce measures in the event of faults.
nClean system/ product.
+ additional qualification explosion pro-
tection
In addition to the knowledge of the various
specialist fields, the mechanic has knowl-
edge of regulations and safety measures
when working in potentially explosive areas.
Dürr Systems offers special product training
for Ä “Hotline and Contact”.
2.5 Personal protective equipment
When working in explosive areas, the protec-
tive clothing, including gloves, must meet the
requirements of EN 1149-5. Footwear must
meet the requirements of ISO 20344 and
IEC 61340-4-3. The volume resistivity must
not exceed 100MΩ.
Wear the specified personal protective
equipment when working. Provide the fol-
lowing personal protective equipment:
Eye protection
Protects eyes from dust, paint drops
and particles.
Protective gloves
Protect the hands from:
nmechanical forces
nThermal forces
nChemical effects
Protective workwear
Tight fitting workwear with low
tear strength, tight sleeves and no
hanging parts.
Respiratory protection device
The respiratory protection device
protects from hazardous gases,
vapors, dust and similar materials
and media. The version of the res-
piratory protection device must be
suitable for the media used as well
as their usage.
Safety boots
Protect feet from crushing, falling
items and slipping.
Use ear protection
Protects from auditory damage due
to noise.
Safety
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3 Transport, scope of supply
and storage
3.1 Scope of delivery
The scope of supply includes the following
components:
nSpray gun
nTool kit Ä 12.2 “Tools”
Inspect delivery on receipt for completeness
and integrity.
Report defects immediately Ä “Hotline and
Contact”.
3.2 Handling of packaging material
ENVIRONMENT!
Incorrect disposal
Incorrectly disposed packaging material
can damage environment.
nDispose of material no longer required
in an environment-friendly manner.
nObserve local disposal specifications.
3.3 Storage
Storage provisions:
nDo not store outdoors.
nProduct only store when in a clean and
dry condition.
nStore in a dust-free place.
nDo not expose to aggressive media.
nProtect from solar radiation.
nAvoid mechanical vibrations.
nTemperature: 10°C to 40°C
nRelative humidity: 35% to 90%
4 Assembly
4.1 Requirements for the
Installation point
nThe compressed air supply to the spray
gun must be interrupted and secured
against reconnection.
nThe compressed air supply must be
adjustable.
nLines, seals and screw connections must
be designed to conform to the require-
ments of the spray gun Ä 11 “Technical
data”.
nThe workplace must have a mechanical
ventilation.
Working environment and grounding
The flooring of the working area must be
anti-static acc. to EN 50050-1, measurement
after EN 1081. The antistatic flooring pre-
vents electrostatic charges from building up.
Dangerous flashovers are prevented.
Transport, scope of supply and storage
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4.2 Assembly
Protective equipment:
nProtective workwear
nProtective gloves
1. WARNING!
Sources of ignition may cause explo-
sions!
Ensure a non-explosive atmosphere.
Fig. 2: Assembly
2. Connect lines. Ensure correct assign-
ment.
1- Material
2 - Atomizer air
5 Commissioning
Protective equipment:
nProtective gloves
nSafety boots
nProtective workwear
nEye protection
nRespiratory protection device
nUse ear protection
Requirements:
nMaterial hose and air hose were assem-
bled Ä 4.2 “Assembly”.
1. Rinse the spray gun before filling it with
paint Ä 6.7 “Purging”:
nWith solvents for flammable coating
materials
nWith water for non-flammable coating
materials
2. Create a trial spray pattern on a test work
piece.
Commissioning
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Setting the material flow
Fig. 3: Set total air pressure and material
quantity
1. Set the material quantity.
nTurn material amount control (1) in
desired direction.
– Right turn: less material
– Left turn: more material
Turn material amount control to
the right but not up to the
mechanical stop. The needle can
then no longer move properly.
For reduction of the material
quantity, it is preferable to use
a smaller nozzle set and not
the material quantity control. To
increase the material quantity,
preferably use a larger nozzle
set.
Set total air pressure
Fig. 4: Set total air and horn air pressure
2. Set the total air pressure by turning the
total air control (2).
nCenter position: Maximum total air
pressure
nLeft rotation and right rotation:
reduced total air pressure
Observe the following character-
istic curve.
Set horn air pressure
3. Set horn air pressure by turning the flat
jet control (1).
nRight turn: rounder jet pattern
nLeft turn: flatter jet pattern
You can turn the flat jet control
continuously and adjust the jet
pattern from flat jet to round jet.
Characteristic curves
The characteristic curves show the air flow
rate for various nozzle sets and air caps for
different air pressures.
Commissioning
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