DÖRR EcoGun 119 User manual

EcoGun 119
Manual Air Spray Gun Gravity-Feed
MSG00013EN, V02
N36200005V
www.durr.com
Operation manual

Information about the document
This document describes the correct han-
dling of the product.
Read the document prior to every activity.
Prepare the document for the application.
Pass on the product only together with
the complete documentation.
Always follow safety instructions, han-
dling instructions and specifications of
every kind.
Illustrations can deviate from the tech-
nical construction.
Validity range of the document
This document describes the following prod-
ucts:
N36200005V
EcoGun 119
Hotline and Contact
If you have queries or would like technical
information, please contact your dealer or
sales partner.
05/2018EcoGun 119 - MSG00013EN2/44

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 Staff qualification.................... 5
2.4 Personal protective equip-
ment....................................... 6
2.5 Residual risks......................... 6
3 Transport, scope of supply and
storage........................................... 7
3.1 Scope of delivery................... 7
3.2 Handling of
packaging material................. 7
3.3 Storage.................................. 7
4 Assembly....................................... 7
4.1 Requirements for the
Installation point..................... 7
4.2 Assembly............................... 8
5 Commissioning............................. 8
6 Operation..................................... 10
6.1 Safety recommendations..... 10
6.2 Checks................................. 10
6.3 Selecting air cap.................. 10
6.4 Changing the air cap............ 11
6.5 Alignment of the air cap....... 12
6.6 Guiding the spray gun.......... 12
6.7 Rinsing................................. 12
6.7.1 Safety recommendations.. 12
6.7.2 General notes................... 12
6.7.3 Rinsing spray gun............. 13
7 Cleaning and maintenance........ 14
7.1 Safety recommendations..... 14
7.2 Cleaning............................... 15
7.3 Maintenance........................ 17
7.3.1 Maintenance schedule...... 17
7.3.2 Lubrication........................ 17
8 Faults........................................... 17
8.1 Safety recommendations .... 17
8.2 Defects table........................ 19
8.3 Troubleshooting................... 21
8.3.1 Replace needle and
nozzle................................ 21
8.3.2 Replacing valve seal......... 23
8.3.3 Replace needle gland....... 25
8.3.4 Set delay time................... 27
9 Disassembly and Disposal........ 28
9.1 Safety recommendations..... 28
9.2 Disassembly......................... 28
9.3 Disposal .............................. 28
10 Technical data............................. 28
10.1 Dimensions and weight...... 28
10.2 Connections....................... 28
10.3 Operating conditions.......... 29
10.4 Emissions........................... 29
10.5 Operating values................ 29
10.6 Type plate.......................... 29
10.7 Materials used.................... 29
10.8 Operating and auxiliary
materials............................ 29
10.9 Material specification......... 29
11 Replacement parts, tools and
accessories................................. 30
11.1 Replacement parts............. 30
11.2 Tools.................................. 38
11.3 Accessories........................ 39
11.4 Order.................................. 40
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1 Product overview
1.1 Overview
Fig. 1: Overview
1 Air cap
2 Cap nut
3 Material connection for flow cups
4 Flat jet control
5 Locknut
6 Material flow control
7 Air connection
8 Air control
9 Trigger
1.2 Short description
The spray gun is intended for surface
coating. Compressed air is used to apply
material. The material to be atomized is fed
via flow cups. The spray gun is handheld.
Gun versions with LA air caps, LH air
caps, LW air caps and LE air caps and
non-adjustable nozzle needles are sup-
plied with a needle packing for materials
that have a low proportion of abrasive
ingredients. These gun versions are here-
after called standard version.
Gun versions with LS air caps and LE air
caps and adjustable nozzle needles are
supplied with a needle packing for mate-
rials that have a high proportion of abra-
sive ingredients (for example enamel,
glaze). These gun versions are hereafter
called ceramic version.
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:
Alignment of the air cap Ä 6.5 “Alignment
of the air cap”
Material flow Ä 5 “Commissioning”
Air pressure Ä 5 “Commissioning”
Horn air pressure Ä 5 “Commissioning”
The standard version of the spray gun uses
a self-adjusting needle packing. The needle
gland automatically regulates the material-
related wear of the needle gland seal. In
addition, the needle packing can be read-
justed mechanically.
2 Safety
2.1 Presentation of Notes
The following notes can appear in this
instructions manual.
Product overview
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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.
NOTICE!
Situations that can lead to material
damage.
ENVIRONMENT!
Situations that can lead to environmental
damage.
Contains additional information and
recommendations.
2.2 Intended Use
The spray gun EcoGun 119 is used exclu-
sively for hand guided spraying coating of
surfaces. Compressed air is used to apply
material.
The material feed is gravity-fed (feed cups).
The use is only permitted in the industrial
area within the specified technical data Ä 10
“Technical data”.
The atomizer is approved for use in explo-
sive areas of Ex zones 1 and 2.
Misuse
There is a risk of death if not used properly.
Misuses include, e. g.:
Aiming the spray gun at humans or ani-
mals.
Atomization of fluid nitrogen
Combination of the spray gun with com-
ponents that are not approved by
Dürr Systems for operation.
Use of unapproved materials, see safety
data sheets
Making conversions or changes on your
own
Use of spray gun in Ex zone 0
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:
Ground spray gun and work piece.
Only use conductive air hoses.
Ensure that static electricity can be dis-
charged.
Use compressed air quick couplings
exclusively for water-based materials.
2.3 Staff qualification
WARNING!
Inadequate qualification
Wrong estimation of dangers can cause
serious injury or death.
– Only sufficiently qualified persons may
execute all work.
– Some work requires additional qualifi-
cation. Additional qualifications are
marked with a “+”.
Safety
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This document is intended for qualified per-
sonnel in the industry.
Operator
The operator is trained specifically for the
field of work in which he works.
Furthermore, the operator possesses the fol-
lowing knowledge:
Technical Measures for occupational
safety and health
The operator is responsible for the following
work:
Operate and monitor the system/ product.
Introduce measures in the event of faults.
Clean 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”.
2.4 Personal protective equipment
When working in explosive areas, the pro-
tective clothing, including gloves, must meet
the requirements of DIN EN 1149-5. Foot-
wear must meet the requirements of EN ISO
20344. The insulation resistor must not
exceed 100 MΩ.
Wear the specified personal protective
equipment when working. Provide the fol-
lowing personal protective equipment:
2.5 Residual risks
Explosion
Sparks, open flames and hot surfaces can
cause explosions in explosive atmospheres.
Serious injuries and death can be the conse-
quence.
Before carrying out any work, ensure a
non-explosive atmosphere.
Do not use sources of ignition and open
light.
Do not smoke.
Ground the product.
Ground the work piece.
Only use conductive lines.
Use compressed air quick release cou-
plings exclusively for non-flammable
materials.
Flammable coating materials and their deter-
gents and cleaning agents can cause a fire
or an explosion.
Ensure that the flashpoint of the fluid is at
least 15 K above the ambient tempera-
ture.
Note explosion group of the fluid.
Follow safety data sheets.
Ensure that forced ventilation and fire
protection equipment are in operation.
Do not use any sources of ignition and
open light.
Do not smoke.
Danger from harmful or irritant sub-
stances
Contact with hazardous liquids or vapors,
can result in serious injury or death.
Ensure that the forced ventilation is
operational.
Follow safety data sheets.
Wear specified protective equipment.
Escaping material
Material escaping under pressure can cause
serious injuries.
Safety
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Before working on the product:
Disconnect the system with the product
from compressed air and material supply.
Relieve the lines.
Secure the system against reconnection.
Noise
The noise during normal operation may
cause severe hearing damage.
Wear hearing protection.
Do not spend more time then necessary
in the work area.
Hot surfaces
During normal operation the surfaces of
components can get extremely hot. Contact
with it can cause burns.
Before carrying out any work:
Check the temperature.
Do not touch hot surfaces.
Let components cool down.
Wear protective gloves.
3 Transport, scope of supply
and storage
3.1 Scope of delivery
The scope of supply includes the following
components:
Spray gun
Tool kit Ä 11.2 “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.
– Dispose of material no longer required
in an environment-friendly manner.
– Observe local disposal specifications.
3.3 Storage
Requirements for the warehouse:
Do not store outdoors.
Store in a dry and dust-free place.
Do not expose to aggressive media.
Protect from solar radiation.
Avoid mechanical vibrations.
Temperature: 10°C to 40°C
Relative humidity: 35% to 90%
4 Assembly
4.1 Requirements for the
Installation point.
It must be possible to disconnect the
compressed air supply to the spray gun
and secure it against reconnection.
The compressed air supply must be
adjustable.
Lines, seals and screw connections must
be designed to conform to the spray gun
requirements Ä 10 “Technical data”.
The workplace must have technical venti-
lation.
Working environment and grounding
Flooring of the working areas must be anti-
static, according to DIN EN
50050-1:2014-03, measurement according
to DIN EN 1081:1998-04.
Transport, scope of supply and storage
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4.2 Assembly
Personnel:
Operator
+ additional qualification explosion pro-
tection
Protective equipment:
Protective workwear
Protective gloves
1. WARNING!
Sources of ignition may cause explo-
sions!
Ensure a non-explosive atmosphere.
Fig. 2: Assembling
2. Screw the feed cup onto the thread of the
material connection (1).
3. Connect air hose to the air connecting
(2).
4. Check air hose for correct seating.
5 Commissioning
Personnel:
Operator
+ additional qualification explosion pro-
tection
Protective equipment:
Protective gloves
Safety boots
Protective workwear
Eye protection
Respiratory protection device
Use ear protection
Requirements:
Feed cup and air hose have been con-
nected Ä 4.2 “Assembly”.
1. Rinse the spray gun before filling it with
paint Ä 6.7 “Rinsing”:
With solvent for flammable paints
With water for non-flammable paints
2. Create a trial spray pattern on a test work
piece.
Commissioning
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Setting the spray pattern
Setting the material flow
Fig. 3: Setting the material flow
1. Set the material flow.
Loosen locknut (1).
Turn set screw (2) in required direc-
tion.
Right turn: less material
Left turn: more material
Tighten the locknut (1).
Do not turn material flow control
to the right up to the mechanical
stop. The needle can then no
longer move properly.
To reduce the material quantity,
preferably 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: Setting the total air and horn air pres-
sure
2. Set the total air pressure by turning the
total air control (2).
Right turn: Lower total air pressure
Left turn: higher total air pressure
Observe the following character-
istic curve.
Setting the horn air pressure
3. Set the horn air pressure by turning the
flat jet control (1).
Right turn: Flat jet minimum
Left turn: Flat jet maximum
You can turn the flat jet control
continuously and adjust the spray
pattern from flat 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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Fig. 5: Characteristic curve
1 Flat jet
2 Circular jet
LH (HVLP) Nozzle set with air cap LH
(HVLP)
LA Nozzle set with air cap LA
LW Nozzle set with air cap LW
X axis Atomizer air pressure and control
air pressure [bar (psi)]*
Y axis Flow rate [Nl/min (CFM)]
* - To achieve the highest possible transfer
rate, the air pressure should be as low
as possible. Also see Ä 6.3 “Selecting
air cap” and Ä 10.5 “Operating values”.
6 Operation
6.1 Safety recommendations
WARNING!
Danger of explosion due to chemical
reactions
Material, halogenated hydrocarbon-based
rinsing agent or cleaning agent can chemi-
cally react with aluminum components of
the product. Chemical reactions can
cause explosions. Serious injuries and
death can be the consequence.
– Only use rinsing agents and cleaning
agents that do not contain any halo-
genated hydrocarbons.
NOTICE!
Material damage due to dried material
residues
If material residues dry in the product, that
can harm components.
– Rinse product immediately after each
use.
6.2 Checks
1. Perform the following checks during oper-
ation:
Check air connection for correct seat
and leaks.
Check air car for cleanliness.
Check nozzle for cleanliness.
6.3 Selecting air cap
You can convert the spray gun for various
uses by swapping the air cap.
Operation
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Air cap LA
The air cap LA is used for solvent-based
coating materials (single component paints
and 2-component) and water-based ones. It
is used for application of fillers, basecoats
and topcoats. If used with a hardened
nozzle, coating materials with abrasive addi-
tives (coating materials containing zinc and
aluminum) can be applied.
Air cap LH (HVLP)
The air cap LA is used for low viscosity (up
to 25 s/DIN cups, 4 mm) solvent-based
coating materials (single component paints
and 2-component) and water-based ones.
The air pressure at the gun inlet must not
exceed 2.0 bar (29 psi) to achieve the max-
imum material transfer rate (called HVLP
method). 2.0 bar (29 psi) at the gun inlet cor-
respond to 0.7 bar (10 psi) below the air cap.
An HVLP test set W05010162 is available
Ä 11.3 “Accessories”.
Air cap LW
The air cap LW is used for water-based
coating materials (also 2-component mate-
rials). If using with a hardened nozzle,
coating materials with abrasive additives
(water-soluble) can be applied.
Air cap LE
The air cap LE is used for solvent-based
coating materials (single component paints
and 2-component) and water-based ones, if
higher outflow rates are required. Coating
materials with abrasive additives (coating
materials containing zinc and aluminum,
enamel, glaze) can also be applied.
Air cap LS
The air cap LS is used for abrasive coating
materials such as enamel and glaze.
6.4 Changing the air cap
Personnel:
Operator
+ additional qualification explosion pro-
tection
Protective equipment:
Protective workwear
Protective gloves
Removing the air cap
Fig. 6: Removing the air cap
1. Loosen cap nut (1).
2. Remove the air cap (1).
Assembling air cap
3. Place the air cap (1).
4. Align the air cap as required Ä 6.5
“Alignment of the air cap”.
5. Tighten cap nut (1).
Operation
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6.5 Alignment of the air cap
Personnel:
Operator
+ additional qualification explosion pro-
tection
Protective equipment:
Protective workwear
Protective gloves
The position of the air cap determines the
alignment of the spray pattern.
Fig. 7: Air cap alignment
1. Lightly loosen cap nut (2).
2. Turn the air cap (1) as required for the
desired spray pattern.
3. Tighten cap nut (2) by hand.
6.6 Guiding the spray gun
Personnel:
Operator
+ additional qualification explosion pro-
tection
Protective equipment:
Protective gloves
Safety boots
Protective workwear
Eye protection
Respiratory protection device
Use ear protection
Fig. 8: Guiding the paint gun
1. Guide the spray gun as follows:
Guide spray gun at 90 degrees to the
surface.
Maintain a distance of 15 to max.
25 cm to the surface.
The distance can vary for effect
coatings.
6.7 Rinsing
6.7.1 Safety recommendations
NOTICE!
Material damage due to unsuitable
rinsing agent
If the rinsing agent reacts chemically with
the components or the material, compo-
nents get damaged.
– Use only the rinsing agents that are
compatible with the components and
the material.
– Refer to safety data sheet of material
manufacturer.
6.7.2 General notes
When rinsing, use fluid to remove inner
soiling from components.
Operation
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6.7.3 Rinsing spray gun
Personnel:
Operator
+ additional qualification explosion pro-
tection
Protective equipment:
Use ear protection
Eye protection
Respiratory protection device
Protective workwear
Protective gloves
Rinsing spray gun:
After end of work
Before every change of material
Prior to cleaning
Prior to dismantling
Before a long time of non-use
Before placing in storage
Additional rinsing intervals depend
on the material used.
Preparation for rinsing
1. Disconnect the air hose from the spray
gun.
Fig. 9: Removing the air cap
2. Loosen cap nut (1).
3. Remove the air cap (1).
Purging
4. Keep collecting tray ready.
Fig. 10: Rinsing spray gun
5. Keep the spray gun slightly at an angle
above the collecting tray, nozzle pointing
towards the ground.
Operation
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6. Rinse the spray gun with an appropriate
rinsing agent through the material con-
nection (2), until the rinsing agent runs
clean without any material residue. Use a
brush to carefully clean the nozzle holes
(3).
7. Ensure proper disposal of the exiting
material and rinsing agent.
8. Connect the compressed air hose to the
spray gun.
9. Operate trigger lever until no more rinsing
agent flows out.
Final work
10. Place the air cap (1).
11. Tighten cap nut (1).
7 Cleaning and maintenance
7.1 Safety recommendations
WARNING!
Danger of fire and explosion
Flammable coating materials and their
detergents and cleaning agents can cause
a fire or an explosion.
– Ensure that the flashpoint of the fluid is
at least 15 K above the ambient tem-
perature.
– Note explosion group of the fluid.
– Follow safety data sheets.
– Ensure that forced ventilation and fire
protection equipment are in operation.
– Do not use sources of ignition and
open light.
– Do not smoke.
WARNING!
Risk of injury from unsuitable replace-
ment parts in explosive areas.
Replacement parts not compliant with the
specifications of the ATEX guidelines can
cause explosions in an explosive atmos-
phere. Serious injuries and death can be
the consequence.
– Use exclusively original replacement
parts.
WARNING!
Danger to health from harmful or irri-
tant substances
Contact with hazardous liquids or vapors,
can result in serious injury or death.
– Ensure that the forced ventilation is
operational.
– Follow safety data sheets.
–Wear specified protective clothing.
WARNING!
Risk of injury due to escaping material
and compressed air
Escaping compressed material can cause
serious injury.
Before carrying out any work:
– Disconnect the system, in which the
spray gun is installed, from com-
pressed air and material supply.
–Secure the system against reconnec-
tion.
– Relieve the lines.
Cleaning and maintenance
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WARNING!
Danger of explosion due to chemical
reactions
Material, halogenated hydrocarbon-based
rinsing agent or cleaning agent can chemi-
cally react with aluminum components of
the product. Chemical reactions can
cause explosions. Serious injuries and
death can be the consequence.
– Only use rinsing agents and cleaning
agents that do not contain any halo-
genated hydrocarbons.
CAUTION!
Risk of injury due to spring tension
The set screw of the spray gun is under
spring tension. If you remove the set
screw, the spring tension could cause the
set screw to jump out unexpectedly and
cause light injuries.
– Remove and install set screw.
NOTICE!
Unsuitable cleaning agents
Unsuitable cleaning agents can damage
the product.
– Only use cleaning agents approved by
the material manufacturer.
– Follow safety data sheets.
–Place heavily soiled components in a
cleaning bath.
– Only place those parts in the
cleaning bath, which are suitable for
the cleaning bath.
– Use only electrically conductive
containers.
– Ground the container.
– Do not use ultrasound baths.
Use alcohols (isopropanol, butanol) for
non-flammable coating materials.
Remove dried non-flammable coating
materials using a material manufacturer-
approved organic thinner.
When cleaning with flammable detergent,
do not spray into a closed container. An
explosive gas-air mixture can form inside
closed containers.
NOTICE!
Damage due to unsuitable cleaning
tools
Unsuitable cleaning tools can damage the
product.
– Only use cloths, soft brushes and
paintbrushes.
– Do not use abrasive cleaning tools.
–Do not poke blocked nozzles with met-
allic objects.
– Do not use compressed air for
cleaning.
– Do not use any thinner spray guns.
– Do not use high pressure for cleaning
agents.
7.2 Cleaning
Personnel:
Operator
+ additional qualification explosion pro-
tection
Protective equipment:
Use ear protection
Eye protection
Respiratory protection device
Protective workwear
Protective gloves
1. Rinse the spray gun Ä 6.7 “Rinsing”.
2. Disconnect the air hose from the spray
gun.
Cleaning and maintenance
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3. Remove feed cup.
4. Remove material residues with a cloth or
a soft brush.
5. Clean the spray gun carefully and dry it
with a soft cloth.
Clean filter of the flow cup.
Personnel:
Operator
+ additional qualification explosion pro-
tection
Protective equipment:
Protective workwear
Protective gloves
Depending on the configuration, the spray
gun using a filter screen.
For a thorough cleaning, you can remove the
filter screen.
Disassembly
Fig. 11: Clean filter screen
1. Pull out filter screen (1) by the holding pin
from the connector.
2. Clean filter screen in the cleaning bath.
3. Insert filter screen (1) in the connector
and push down until it sits firmly.
Cleaning the air cap und nozzle
Personnel:
Operator
+ additional qualification explosion pro-
tection
Protective equipment:
Protective workwear
Protective gloves
For a thorough cleaning you can remove the
air cap and the nozzle.
Disassembly
Fig. 12: Disassembling the air cap and
nozzle
1. Loosen cap nut (1).
2. Remove the air cap (1).
3. Push trigger lever (3) through. Keep it
pressed.
ðThe needle is pushed backwards so
that it will not be damaged during dis-
assembly of the nozzle.
4. Unscrew nozzle (2) using monkey wrench
and remove.
5. Release trigger lever (3).
Cleaning and maintenance
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6. Clean air cap using cleaning agent and
cleaning brush Ä 11.2 “Tools”.
7. Wipe the cleaned air cap dry with a cloth.
8. Clean the nozzle in the cleaning bath.
9. Clean nozzle seat with a cloth or a soft
brush.
Assembling
10. Push trigger lever (3) through. Keep it
pressed.
ðThe needle is pushed backwards so
that it will not be damaged during
assembly of the nozzle.
11. Insert and tighten nozzle (2).
Tightening torque: 10 Nm
12. Release trigger lever (3).
13. Place the air cap (1).
14. Tighten cap nut (1).
7.3 Maintenance
7.3.1 Maintenance schedule
The maintenance intervals given below are based on experiential values. Adjust maintenance
intervals individually to increased requirements.
Interval Maintenance work
After each use Clean Ä 7.2 “Cleaning”.
Daily Check state and tightness of the spray gun as well as of the connections
and lines.
Weekly Lubricate lever bearing Ä 7.3.2 “Lubrication”.
7.3.2 Lubrication
The following components must be lubri-
cated with a silicone-free grease:
O-rings and seals
Bearing
Set screw and threads
Needle gland
Lever bearing
Lubricate internal components at the
time of maintenance work, which
include disassembly of the con-
cerned components any way.
Recommended lubricant: SYN-
THESO GLEP 1 Ä 10.8 “Operating
and auxiliary materials”
8 Faults
8.1 Safety recommendations
NOTICE!
Property damage due to improper
replacement of needle and nozzle
Replacing only the needle or only the
nozzle could damage spray gun compo-
nents. This can compromise the tightness
of the spray gun. The spray pattern deteri-
orates.
– Observe order of replacement steps
(needle – nozzle).
– Observe order of assembly steps
(nozzle – needle).
– Always replace nozzle and needle at
the same time.
Faults
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NOTICE!
Property damage due to improper han-
dling
Mechanical load can damage needle and
nozzle.
– Handle with care during installation
and dismantling.
– Do not subject the needle to any
mechanical pressure.
– Avoid collisions of components to be
assembled and disassembled with the
needle.
–Do not excessively tighten compo-
nents.
Faults
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8.2 Defects table
Visualizer of typical spray pattern problems
Spray pattern Fault identification
Spray jet is distorted.
Spray jet is bent or tapered.
Spray jet is too thick in the middle.
Spray jet is split.
Spray jet is uneven.
Fault description Cause Remedy
No material Feed cup empty Check feed cup. Top up, if necessary.
Material escapes at the
needle gland.
Needle gland worn
out
Replace needle gland Ä 8.3.3
“Replace needle gland”.
Needle gland loose Tighten needle gland sensitively.
Air escapes between valve
pin and housing.
Valve seal worn out. Replace valve seal Ä 8.3.2
“Replacing valve seal”.
Spray jet is distorted. Air cap is misaligned. Rotate air cap into the required posi-
tion. Ä 6.5 “Alignment of the air cap”
Spray jet is bent or tapered. Bores in air cap are
soiled.
Clean and check air cap. Replace air
cap if defective Ä 7.2 “Cleaning”.
Faults
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Fault description Cause Remedy
Nozzle seat soiled. Cleaning the nozzle seat Ä 7.2
“Cleaning”.
Nozzle soiled or
defective.
Clean and check the nozzle. If nozzle
is defective, replace it along with the
needle Ä 8.3.1 “Replace needle and
nozzle.”.
Spray jet is too thick in the
middle.
Material too viscous. Change material consistency.
Horn air pressure too
low
Decrease the horn air pressure via the
flat jet control.
Air pressure too low Increase the air pressure via the total
air control.
Spray jet is split. Material too thin. Change material consistency.
Horn air pressure too
high
Decrease the horn air pressure via the
flat jet control.
Air pressure too high Decrease the air pressure via the total
air control.
Spray jet is uneven. The
spray pattern quality is bad.
Nozzle soiled or
defective.
Clean and check the nozzle. If nozzle
is defective, replace it along with the
needle Ä 8.3.1 “Replace needle and
nozzle.”.
Cap nut or nozzle is
not properly tight-
ened.
Tighten cap nut and nozzle
Ä “Cleaning the air cap und nozzle”.
Needle gland worn
out
Replace needle gland Ä 8.3.3
“Replace needle gland”.
Faults
05/2018EcoGun 119 - MSG00013EN20/44