DÖRR EcoGun AL AUTO User manual

EcoGun AL AUTO
Automatic Airless Spray Gun
MSG00012EN, V03
N36250001V
www.durr.com
Operation manual

Information about the document
This document facilitates safe handling of
the product.
Read the document before beginning any
work.
The document must be kept readily
accessible and close to the place of use
for use in the future.
The document must be included if the
product is transferred.
Always follow specifications such as
instructions for use and safety tips.
Images are there to help general under-
standing and can differ from the actual
product.
Validity range of the document
This document describes the following
product:
N36250001V
EcoGun AL AUTO
Hotline and Contact
If you have queries or would like technical
information, please contact your dealer or
sales partner.
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TABLE OF CONTENTS
1Product overview.......................... 4
1.1 Overview................................ 4
1.2 Short description.................... 4
2 Safety............................................. 5
2.1 Explanation of symbols.......... 5
2.2 Intended Use.......................... 5
2.3 Residual risks......................... 6
2.4 Staff qualification.................... 6
2.5 Personal protective equip-
ment....................................... 7
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............................... 7
5 Commissioning............................. 9
6 Operation..................................... 10
6.1 Safety recommendations..... 10
6.2 Checks................................. 10
6.3 Rinsing................................. 10
6.3.1 Safety recommendations.. 10
6.3.2 General notes................... 10
6.3.3 Rinsing.............................. 10
7 Cleaning and maintenance........ 11
7.1 Safety recommendations..... 11
7.2 Cleaning............................... 12
7.3 Maintenance........................ 14
7.3.1 Maintenance schedule...... 14
7.3.2 Lubrication........................ 14
8 Faults........................................... 15
8.1 Safety recommendations .... 15
8.2 Defects table........................ 16
8.3 Troubleshooting................... 17
8.3.1 Remove nozzle blockage.. 17
8.3.2 Replace nozzle................. 18
8.3.3 Replace nozzle seal seat.. 19
8.3.4 Replace needle and seals. 20
8.3.5 Replace needle spring...... 22
8.3.6 Replace piston seals......... 23
9 Disassembly and Disposal........ 24
9.1 Safety recommendations..... 24
9.2 Disassembly......................... 24
9.3 Disposal .............................. 25
10 Technical data............................. 25
10.1 Dimensions and weight...... 25
10.2 Connections....................... 25
10.3 Operating conditions.......... 25
10.4 Emissions........................... 25
10.5 Operating values................ 25
10.6 Compressed air quality...... 26
10.7 Type plate.......................... 26
10.8 Materials used.................... 26
10.9 Operating and auxiliary
materials............................ 26
10.10 Material specification.......... 26
11 Replacement parts, tools and
accessories................................. 27
11.1 Replacement parts............. 27
11.2 Tools.................................. 33
11.3 Accessories........................ 34
11.4 Order.................................. 39
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1 Product overview
1.1 Overview
Fig. 1: Product overview
1 Material connection for paint circulation
mode
2 Fix bracket with angular gauge
3 Material connection (M)
4 Control air connection (C)
5 End cap
6 Housing
7 Leakage groove
8 Reversible nozzle
9 Spray jet screen
10 Connecting piece
1.2 Short description
The spray gun is used for coating surfaces in
high pressure areas. Compressed air is used
to control the opening and closing of the
needle. The material to be atomized is fed
through high pressure lines. The operation
can be done with paint circulation or tap line.
Use a nozzle with a suitable diameter,
depending on the requirement. If there is a
blockage, you can rotate and flush the
nozzle through without disassembly.
Follow the special instructions
manual for spray jet screen and
the nozzle.
The following factors influence the spray jet
and therefore the result
Control air pressure
Opens the needle and controls the mate-
rial flow.
Material pressure
The higher the material pressure, the
higher the material flow and thus the finer
the atomization. The lower the material
pressure, the higher is the efficiency and
the smaller is the overspray generated.
Nozzle
The higher the bore diameter, the more
the material flowing out. The greater the
angle, the wider is the spray pattern.
Control air pressure and material pressure
are controlled externally via valves.
Product overview
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2 Safety
2.1 Explanation of symbols
The following notes can appear in this
instructions manual.
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
Use
The EcoGun AL AUTO spray gun is
intended for use in application stations only.
The EcoGun AL AUTO spray gun is solely
intended for automatic coating of surfaces in
one of the following operating methods:
as independent, not hand guided, device
as part of a fully automated paint booth
as part of a paint robot
The material is fed through a high pressure
line.
The use is only permitted within the specified
technical data. Ä 10 “Technical data”
The spray gun is approved for use in explo-
sive areas of Ex zones 1.
Wrong Use
Wrong use of the spray gun entails a risk of
death.
Do not aim the spray gun at people or
animals.
Do not atomize liquid nitrogen.
Combine the spray gun only with compo-
nents approved by Dürr Systems for
operation.
Only use approved materials. Observe
the safety data sheets.
Use only the hoses approved for the
material and the operating pressure used.
Do not attempt to make conversions or
changes on your own.
Only use the spray gun in areas desig-
nated according to EX labeling.
EX labeling
II 2G T6 X
II - Device group II: all areas except
mining
2G - Device category 2 for gas
T6 - Temperature class T6: Surface tem-
perature, max. 85 °C
X - Specific conditions for safe operation
The following conditions must be observed
for safe operation:
The spray gun and the work piece must
be grounded.
Only use conductive lines.
Ensure that static electricity can be dis-
charged.
Safety
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2.3 Residual risks
Explosion
Sparks, open flames and hot surfaces can
cause explosions in explosive atmospheres.
Serious injuries and death can be the conse-
quence.
Perform all maintenance away from
explosive atmospheres.
Do not use any sources of ignition and no
open light.
Do not smoke.
Ground the product.
Ground the work piece.
Only use conductive lines.
Flammable materials can cause a fire or an
explosion.
Ensure that the flashpoint of the cleaning
agent is at least 5 K above the ambient
temperature.
Pay attention to the explosion group of
the material, cleaning agent and rinsing
agent.
Ensure that forced ventilation and fire
protection equipment are in operation.
Do not use any sources of ignition and no
open light.
Do not smoke.
Follow safety data sheets.
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.
Observe the safety data sheets.
Wear specified protective equipment.
Pressure
Material can escape with high pressure and
penetrate the body. Death or serious injuries
may result.
Before working on the product:
Disconnect the system with the product
from compressed air and material supply.
Secure the system against being
switched on again.
Relieve the lines.
Movable components
There is a risk of death if components or
equipment in the vicinity move unexpectedly.
Switch off and lock out all system compo-
nents against being switched on again
before working on the product.
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. Burn
injuries can happen on contact.
Before carrying out any work:
Check the temperature.
Do not touch hot surfaces.
Let components cool down.
Wear protective gloves.
2.4 Staff qualification
WARNING!
Inadequate qualification
If you do not assess risks properly,
serious injury or death may result.
– All activities must be conducted
exclusively by people who possess
the proper qualifications.
This instructions manual is intended for
qualified personnel in the industry pos-
sessing at least the following knowledge:
Safe operation of application stations
Fundamentals of electrical engineering,
hydraulics and pneumatics:
Safety
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Safe handling of the used material, oper-
ating and auxiliary materials
Training for operation, maintenance and
troubleshooting
Dürr Systems offers special product training
Ä “Hotline and Contact”.
2.5 Personal protective equipment
Wear the required personal protective equip-
ment when working. Provide the following
personal protective equipment:
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!
Environmental damage due to wrong
disposal
Wrongly disposed packaging material
may not be re-used or recycled. It harms
the environment.
– Dispose of material no longer
required in an environment-friendly
manner.
–Observe local disposal specifica-
tions.
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 and material feed
to the spray gun and secure it against
reconnection.
Lines, seals and screw connections must
be designed to conform to the spray gun
requirements Ä 10.5 “Operating values”.
A fastening device capable of securing
the spray gun is required.
The control air supply must be adjustable.
The material feed must be through a filter
to avoid clogging of the nozzle.
4.2 Assembly
Stationary assembly
Protective equipment:
Protective workwear
Protective gloves
Observe the following at assembly:
Bore of the retaining bolt: 10 mm
Normal diameters: Ä 10.2 “Connections”
1. WARNING!
Sources of ignition may cause explo-
sions!
Ensure a non-explosive atmosphere.
Transport, scope of supply and storage
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Fig. 2: Assembly
2. Tighten screw (1) using a hexagon socket
screwdriver.
3. Slide the spray gun with the bore of the
fastening bolt (2) onto the fastening
device.
4. Tighten screw (1) using a hexagon socket
screwdriver.
5. Loosen locknut (3).
6. Set orientation angle on the housing
(1)by using angular gauge.
Alignment is not important.
Distance to the work piece:
15 to 25 cm.
7. Tighten the locknut (3).
8. WARNING!
Statically charges components may
cause explosions during operation!
Ground the spray gun through the fas-
tening bore or material connection lines, if
the fastening device itself is non-conduc-
tive or is not grounded. Ensure housing
contract.
In the following cases, pro-
vide an additional voltage
equalizing cable between
spray gun and pressure
device (minimum cross sec-
tion: 4 mm):
– When processing easily
flammable materials with
ignition temperature
lower than 21 °C
–When processing mate-
rials that heat up beyond
their ignition temperature
due to the processing
Resistance between housing and
grounding terminal ≤ 1 MΩ.
Assembly
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9. Provide material filter in the material line
corresponding to the use of the spray
gun.
Recommended mesh widths of the
material filter
Nozzle diam-
eter
Mesh width
< 0.25 mm 74 µm
0.25 mm to
0.30 mm
149 µm
> 0.40 mm 250 µm
Fig. 3: Connect
10. The spray gun does not
work when the lines are not
connected correctly.
Connect lines. Ensure correct assign-
ment.
1 - Material (M)
2 - Control air (C)
Connect lines to both mate-
rial connections for paint cir-
culation mode.
For tap line mode, connect
line to the material connec-
tion on the underside. Close
the other material connec-
tion by means of the sealing
screw.
5 Commissioning
Protective equipment:
Use ear protection
Eye protection
Respiratory protection device
Protective workwear
Protective gloves
Depending on the design of the application
system, two technicians must be present to
execute the commissioning.
Technician 1: Operates the controls
Technician 2: Check on the spray gun.
Fig. 4: Commissioning
1. Ensure that the nozzle with the tip of the
arrow of the adjustment lever (1) points to
the front.
2. Actuate the spray gun without material
via the control unit or the visualizer.
3. Check the switching behavior.
Does the needle open and close as
required?
Is air supply enabled?
4. Rinse spray gun. Ä 6.3 “Rinsing”
5. Connect material. Create a trial spray
pattern on a test work piece.
Commissioning
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Setting the spray pattern
Protective equipment:
Use ear protection
Eye protection
Respiratory protection device
Protective workwear
Protective gloves
You can vary the size of the
spray pattern by adjusting the
distance of the spray gun to the
work piece and the selected
nozzle size.
1. Use valves in control cabinet to adjust the
material pressure.
6 Operation
6.1 Safety recommendations
WARNING!
Danger of explosion due to chemical
reactions
Material, halogenated hydrocarbon-based
rinsing agent or cleaning agent can
chemically react with aluminum compo-
nents 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 halogenated 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 spray gun for cleanliness.
Check O-rings for correct seating and
tightness.
Check material pressure in relation to
the nozzle used.
Check nozzle for blockage.
Check spray gun for material leakage.
6.3 Rinsing
6.3.1 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 mate-
rial manufacturer.
6.3.2 General notes
When rinsing, use fluid to remove inner
soiling from components.
6.3.3 Rinsing
Protective equipment:
Use ear protection
Eye protection
Respiratory protection device
Protective workwear
Protective gloves
The spray gun must be rinsed:
After end of work
Before every change of material
Prior to cleaning
Prior to dismantling
Operation
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Before a long time of non-use
Before placing in storage
Additional rinsing intervals
depend on the material used.
1. Rinse the spray gun with an appropriate
rinsing agent until the rinsing agent runs
clean without any material residue.
7 Cleaning and maintenance
7.1 Safety recommendations
WARNING!
Danger of fire and explosion
Flammable materials can cause a fire or
an explosion.
– Ensure that the flashpoint of the
cleaning agent is at least 5 K above
the ambient temperature.
–Pay attention to the explosion group
of the material, cleaning and rinsing
agent.
– Ensure that technical ventilation and
fire protection equipment are in
operation.
– Do not use any sources of ignition
and no open light.
– Do not smoke.
– Observe the safety data sheets.
WARNING!
Risk of injury from unsuitable replace-
ment parts in explosive areas.
Replacement parts not compliant with
the specifications of the ATEX guide-
lines can cause explosions in an explo-
sive atmosphere. Serious injuries and
death can be the consequence.
–Use exclusively original replacement
parts.
WARNING!
Danger from harmful or irritant sub-
stances
If you come in contact with hazardous liq-
uids or vapors, serious injury or death
can be the consequence.
– Ensure the technical ventilation is
operational.
–Observe the safety data sheets.
– Wear specified protective clothing.
WARNING!
Risk of injury due to escaping material
and compressed air
Material can escape with high pressure
and penetrate the body. The injury can
look like a harmless cut wound. Death or
serious injuries may result.
– If there are injuries, seek medical
attention immediately.
Before working on the product:
–Disconnect the system with the
product from compressed air and
material supply.
– Secure the system against recon-
nection.
– Relieve the lines.
WARNING!
Danger of explosion due to chemical
reactions
Material, halogenated hydrocarbon-based
rinsing agent or cleaning agent can
chemically react with aluminum compo-
nents 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 halogenated hydrocarbons.
Cleaning and maintenance
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CAUTION!
Risk of injury due to spring tension
The end cap of the spray gun is under
spring tension. If you remove the end
cap, the spring tension could cause the
end cap to jump out unexpectedly and
cause light injuries.
– Removing and installing end cap
NOTICE!
Material damage due to unsuitable
cleaning agent
Unsuitable cleaning agents can damage
the product.
– Only use suitable cleaning agents
approved by the material manufac-
turer.
–Observe the safety data sheets.
– Place heavily soiled components
into a cleaning bath.
– For cleaning baths, use only elec-
trically non-conductive con-
tainers.
– Do not use ultrasound baths.
Use alcohols (isopropanol, butanol) for
water-based paint.
Remove dried water-based paint residue
using a manufacturer approved thinner.
When cleaning with solvent, do not spray
into a closed container. An explosive gas-
air mixture can form inside closed con-
tainers.
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
metallic 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
Clean the spray gun.
Protective equipment:
Use ear protection
Eye protection
Respiratory protection device
Protective workwear
Protective gloves
1. Rinse spray gun. Ä 6.3 “Rinsing”
2. If the soiling is heavy, dismantle the
nozzle seal seat and the nozzle and
clean them separately Ä “Cleaning the
nozzle seal seat and nozzle”.
Follow the instructions for the
spray jet screen..
3. Use a cleaning agent to carefully clean
the spray gun. Dry with a soft cloth.
Cleaning and maintenance
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Cleaning the nozzle seal seat and nozzle
Requirements:
For a thorough cleaning, you can remove
the nozzle seal seat and the nozzle.
Disassembling
Fig. 5: Relieve the piston
1. Thread off and remove nozzle (4) with
end cap.
2. Remove spring seat (3).
3. Remove limiting ring (2).
4. Remove needle spring (1).
Fig. 6: Clean the nozzle seal set
5. Unscrew and remove spray jet screen
(6).
6. Unscrew the nozzle seal seat (5) using
installation wrench.
Fig. 7: Clean the nozzle
7. Rotate the adjustment lever of the nozzle
(7) such that the tip of the arrow points to
the rear.
8. Pull nozzle (7) upwards from the spray jet
screen (6).
9. Clean nozzle (7) and nozzle seal seat (5)
in the cleaning bath.
Assembly
10. Insert nozzle seal seat (5) and tighten it.
Tightening torque: 20 Nm
11. Insert nozzle (7) in spray jet screen (6).
12. Rotate the adjustment lever of the
nozzle (7) such that the tip of the arrow
points to the front.
13. Fit spray jet screen (6). Tighten by
hand.
14. Insert needle spring (1).
15. Insert limiting ring (2).
Cleaning and maintenance
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16. Insert spring seat (3).
17. Fit end cap (4). Tighten by hand.
7.3 Maintenance
7.3.1 Maintenance schedule
The maintenance intervals given below are based on experiential values. Adjust maintenance
intervals to the conditions of use.
Interval Maintenance work
Daily Check state and tightness of the spray gun as well as
connections and lines.
Check fastening
Check spray gun for material leakage from the housing
bore.
Clean material filter.
Before every change of material Cleaning Ä 7.2 “Cleaning”.
Monthly Lubricate piston. Ä 7.3.2 “Lubrication”
After each alteration Check grounding Ä 4.2 “Assembly”.
7.3.2 Lubrication
Protective equipment:
Protective workwear
Protective gloves
Piston components must be lubricated so
that there will not be any leakages.
Cleaning and maintenance
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Fig. 8: Lubricating piston components
1. Feed lubricant at the control air connec-
tion (C) (1) using the control air.
8 Faults
8.1 Safety recommendations
CAUTION!
Risk of injury due to spring tension
The end cap of the spray gun is under
spring tension. If you remove the end
cap, the spring tension could cause the
end cap to jump out unexpectedly and
cause light injuries.
– Removing and installing end cap
NOTICE!
Property damage due to improper
replacement of needle and nozzle seal
seat
If you only replace the needle or only the
nozzle seal seat, it could damage spray
gun components. This can compromise
the tightness of the spray gun. The spray
pattern deteriorates.
– Always replace nozzle seal seat and
needle at the same time.
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
Fault description Cause Correction
No Material Line pinched or broken Check the line.
Needle does not open. Check control air.
Material leaking when
needle is closed.
Needle does not close cor-
rectly.
Check operation of needle. Replace
needle, if defective, together with the
nozzle seal seat Ä 8.3.4 “Replace
needle and seals.”.
Nozzle seal seat soiled or
defective.
Clean and check the nozzle seal seat.
If nozzle seal seat is defective,
replace it along with the needle.
Ä 8.3.3 “Replace nozzle seal seat”
Needle spring worn out Replace needle spring Ä 8.3.5
“Replace needle spring.”.
Material leaks at the
leakage groove.
Needle seal worn out. Replace needle seal. Ä 8.3.4
“Replace needle and seals.”
Needle worn out. Check operation of needle. Replace
needle, if defective, together with the
nozzle seal seat Ä 8.3.4 “Replace
needle and seals.”.
Air leaks from the end
cap.
Piston sleeve worn out. Replace piston sleeve Ä 8.3.6
“Replace piston seals.”.
Air leak from the
leakage bore.
O-ring of the piston worn
out.
Replace O-ring Ä 8.3.6 “Replace
piston seals.”.
Weak spray jet Material pressure too low. Increase material pressure.
External filter clogged. Check external filter. If blocked,
replace.
Nozzle diameter too small. Insert nozzle with a larger diameter.
Ä 8.3.2 “Replace nozzle”
Spray jet distinctly
smaller than original
(about 25 %).
Nozzle worn out. Replace nozzle Ä 8.3.2 “Replace
nozzle”.
Uneven spray jet or bad
spray pattern quality.
Nozzle soiled or defective. Remove nozzle blockage Ä 8.3.1
“Remove nozzle blockage.”.
Faults
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Fault description Cause Correction
Clean and check the nozzle. Replace
nozzle if defective Ä 8.3.2 “Replace
nozzle”.
Material pressure too low. Increase material pressure.
Material too viscous. Change material consistency.
Feed line pinched or
broken.
Check the feed line.
Needle does not open
fully.
Check control air.
Check operation of needle. Replace
needle, if defective, together with the
nozzle seal seat Ä 8.3.4 “Replace
needle and seals.”.
Spray jet screen is not
properly firm.
Tighten cap nut Ä 7.2 “Cleaning”.
Arrow tip of the nozzle set-
ting lever does not point to
the front.
Bring the adjustment lever of the
nozzle exactly in the parking position.
Spray nozzle keeps get-
ting clogged.
Material pigmented too
large for the selected
nozzle diameter.
Select material with smaller pigmenta-
tion.
Insert nozzle with a larger diameter.
Ä 8.3.2 “Replace nozzle”
Mesh values of the
external filter too large.
Insert filters with smaller mesh width.
8.3 Troubleshooting
8.3.1 Remove nozzle blockage.
Protective equipment:
Protective workwear
Protective gloves
Faults
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Fig. 9: Blow the nozzle free
1. Rotate the nozzle by 180° such that the
tip of the arrow of the adjusting lever (1)
points to the spray gun.
2. Briefly actuate the spray gun.
3. Rotate the nozzle by 180° such that the
tip of the arrow of the adjusting lever (1)
again points to the front.
8.3.2 Replace nozzle
Protective equipment:
Protective workwear
Protective gloves
Follow the special instructions
manual for spray jet screen and
the nozzle.
1. Unscrew spray jet screen.
Fig. 10: Replace nozzle
2. Rotate the adjustment lever of the nozzle
(1) such that the tip of the arrow points to
the rear.
3. Pull nozzle (1) upwards.
4. Replace worn out or defective nozzle.
5. Insert nozzle (1) in spray jet screen (2).
6. Rotate the adjustment lever of the nozzle
(1) such that the tip of the arrow points to
the front.
Faults
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8.3.3 Replace nozzle seal seat
Protective equipment:
Protective workwear
Protective gloves
Disassembling
Fig. 11: Relieve the piston
1. Thread off and remove nozzle (4) with
end cap.
2. Remove spring seat (3).
3. Remove limiting ring (2).
4. Remove needle spring (1).
Fig. 12: Disassemble nozzle seal seat
5. Unscrew and remove spray jet screen
(6).
6. Unscrew the nozzle seal seat (5) using
installation wrench.
7. Replace worn out or defective nozzle seal
seat.
Assembly
8. Insert nozzle seal seat (5) and tighten it.
Tightening torque: 20 Nm
9. Fit spray jet screen (6). Tighten by hand.
10. Insert needle spring (1).
11. Insert limiting ring (2).
12. Insert spring seat (3).
13. Fit end cap (4). Tighten by hand.
Faults
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8.3.4 Replace needle and seals.
Protective equipment:
Protective workwear
Protective gloves
Disassembling
Fig. 13: Relieve the piston
1. Thread off and remove nozzle (4) with
end cap.
2. Remove spring seat (3).
3. Remove limiting ring (2).
4. Remove needle spring (1).
Fig. 14: Disassemble nozzle seal seat
5. Unscrew and remove spray jet screen
(6).
6. Unscrew the nozzle seal seat (5) using
installation wrench.
Fig. 15: Disassemble needle.
7. Firmly hold needle holder (8). Turn the
needle (7) out.
Faults
01/2017EcoGun AL AUTO - MSG00012EN20/40