DÖRR EcoGun ACE User manual

MSG00025EN, V05
N3627...
www.durr.com
Operation manual
EcoGun ACE
Manual Spray Cup Gun with exchangeable
Plastic Nozzle

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
product:
N3627...
EcoGun ACE
Hotline and Contact
If you have queries or would like technical
information, please contact your dealer or
sales partner.
06/2023
EcoGun ACE - MSG00025EN2/32

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......................... 5
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................................... 8
4 Assembly....................................... 8
4.1 Requirements for the
Installation point..................... 8
4.2 Assembly................................ 8
5 Commissioning............................. 9
6 Operation..................................... 10
6.1 Safety recommendations...... 10
6.2 General notes....................... 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.......... 13
7 Cleaning....................................... 13
7.1 Safety recommendations ..... 13
7.2 Cleaning............................... 15
8 Maintenance................................ 15
8.1 Safety notes......................... 15
8.2 Maintenance schedule......... 15
9 Faults............................................ 16
9.1 Defects table........................ 16
9.2 Troubleshooting.................... 18
9.2.1 Replace the needle........... 18
9.2.2 Replacing valve seal......... 19
9.2.3 Replace O-ring on the air
control................................ 20
9.2.4 Replace O-ring on the cir-
cular jet control ................. 21
9.2.5 Replace air connection...... 22
10 Disassembly and Disposal......... 22
10.1 Safety recommendations.... 22
10.2 Disassembly....................... 23
10.3 Disposal ............................. 23
11 Technical data............................. 23
11.1 Weight................................ 23
11.2 Connections........................ 23
11.3 Operating conditions........... 24
11.4 Emissions........................... 24
11.5 Operating values................ 24
11.6 Type plate........................... 24
11.7 Materials used.................... 24
11.8 Operating and auxiliary
materials............................. 25
11.9 Material specification.......... 25
12 Spare parts and accessories..... 25
12.1 Spare parts list................... 25
12.2 Accessories........................ 29
12.3 Order.................................. 30
06/2023 EcoGun ACE - MSG00025EN 3/32

1 Product overview
1.1 Overview
Fig. 1: Overview
1 Air cap (conventional/CF or LVLP/LF)
2 Flat jet control
3 Plastic nozzle with cup connection
4 Air control
5 Locknut
6Stop screw quick-clip technology Ä 9.2.1
“Replace the needle.”
7 Air connection
8 Trigger
1.2 Short description
The spray gun is intended for surface coating
by means of compressed air. The spray gun
is hand-held.
The following factors influence the spray jet
and therefore the result:
nAlignment of the air cap
Ä 6.5 “Alignment of the air cap”
nMaterial quantity
Ä 5 “Commissioning”
nAir pressure
Ä 5 “Commissioning”
nSpray width
Ä 5 “Commissioning”
The spray gun has an exchangeable plastic
nozzle. The plastic nozzle and cup can
be exchanged after a completed coating
process.
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.
NOTICE!
Situations that can lead to material
damage.
ENVIRONMENT!
Situations that can lead to environmental
damage.
Additional information and recom-
mendations.
Product overview
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2.2 Intended Use
The spray gun EcoGun ACE is used exclu-
sively for spraying flammable and non-flam-
mable, liquid coating materials. The spray
gun is hand guided and uses compressed
air.
The spray gun may only be operated in EX
zones 1 and 2 and within the approved tech-
nical data Ä 11 “Technical data”.
The spray gun is only intended for industrial
use.
Misuse
There is a risk of death if not used properly.
Examples of wrong use are:
nAiming the spray gun at humans or ani-
mals
nAtomization of fluid nitrogen
nCombination of the spray gun with
components that are not approved by
Dürr Systems for operation.
nUse of unapproved materials, see safety
data sheets
nMaking conversions or changes on your
own
nUse of the spray guns not conforming to
the device category in Ex zones.
Ex labeling
II 2G T40 °C X
II - Device group II: all areas except
mining
2G - Device category 2 for gas
T40 °C - Surface temperature, max. 40°C
X - Specific operating conditions for
safe operation
The following conditions must be observed
for safe operation:
nGround the spray gun.
Check shunting resistor upon installation:
– Resistance £ 1MW
nOnly use conductive hoses.
nEnsure that static electricity can be dis-
charged.
nUse compressed air quick release cou-
plings exclusively for non-flammable
materials for which no static electricity
has to be discharged.
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.
Safety
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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 Spray gun 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.
nSpray gun 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.
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
Safety
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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.
Face protection
Protect the face from dust, paint
drops and particles flying around,
such as ships and slivers.
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.
3 Transport, scope of supply
and storage
3.1 Scope of delivery
The scope of supply includes the following
components:
nSpray gun
– without plastic nozzle
–without one-way cup
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.
Transport, scope of supply and storage
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3.3 Storage
Storage provisions:
nDo not store outdoors.
nSpray gun 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.
4.2 Assembly
Personnel:
nOperator
n + additional qualification explosion pro-
tection
Protective equipment:
nProtective workwear
nProtective gloves
1. WARNING!
Sources of ignition may cause explo-
sions!
Ensure a non-explosive atmosphere.
Fig. 2: Assembly
2. Insert plastic nozzle (4) into the housing
(8).
3. Tighten air cap (3) with cap nut (1).
ðThe seal (2) must be in the cap nut.
4. Screw the feed cup (6) onto the thread of
the cup connection (5).
5. Connect the air hose to the air supply (7).
6. Check the seat of the air hose.
Assembly
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5 Commissioning
Personnel:
nOperator
n + additional qualification explosion pro-
tection
Protective equipment:
nProtective gloves
nSafety boots
nProtective workwear
nEye protection
nRespiratory protection device
nUse ear protection
Requirements:
nPlastic nozzle is assembled Ä 4.2
“Assembly”.
nFeed cup is assembled Ä 4.2
“Assembly”.
nAir hose is assembled Ä 4.2 “Assembly”.
Setting the spray pattern
Fig. 3: Setting the material flow
1. Set the material quantity.
nLoosen locknut (1).
nTurn set screw (2) in required direc-
tion.
– Right turn: less material
–Left turn: more material
nTighten locknut (1).
Fig. 4: Setting air flow.
2. Setting air flow.
nSet air control (A) to “minimum”.
nIncrease flow slowly.
The air flow is adjustable contin-
uously, from “minimum” (A) to
“maximum” (C).
The flow rate of air in the position
“A” amounts to 5 - 20% of the
maximum flow rate in the position
“C”.
3. Set the spray width by turning the flat jet
setting (1).
nRight turn: Flat jet min.
nLeft turn: Flat jet max.
You can turn the flat jet continu-
ously 200° and adjust the spray
from flat to round jet.
Characteristic curves
The characteristic curves show the air flow
dependent on the air pressure.
Commissioning
06/2023 EcoGun ACE - MSG00025EN 9/32

Fig. 5: Characteristic curve
CF Conventional air cap
LF Air cap LVLP
6 Operation
6.1 Safety recommendations
WARNING!
Danger of explosion due to chemical
reactions
Material, halogenated hydrocarbon-based
rinsing agent or cleaning agent can chem-
ically react with aluminum components of
the product. Chemical reactions can cause
explosions. Serious injury and death could
be the consequence.
nOnly use purging agents and cleaning
agents that do not contain any halo-
genated hydrocarbons.
CAUTION!
Contact with leaking coating material
With repeated use of the plastic nozzle,
there is a danger of breakage on the shaft
of the plastic nozzle. The leaking coating
material can cause damage to the skin.
nDo not use the plastic nozzle continu-
ously.
nReplace plastic nozzle after each use.
Plastic nozzle is
intended for single use
only
Do not re-use plastic
nozzle.
6.2 General notes
1. Perform the following checks during oper-
ation:
nCheck O-rings for correct seating and
tightness.
nCheck air car for cleanliness.
nCheck plastic nozzle for cleanliness.
6.3 Selecting air cap
The spray gun can be converted from a con-
ventional spray gun to an LVLP spray gun.
Also assemble the corresponding air cap.
Conventional air cap/CF
The conventional air cap is used with deco-
rative surfaces in which the focus lies on the
atomizer.
Conventional air cap features:
nMist arm
nFine atomization
nTransfer rate > 65%
nAir consumption: see characteristic curve
Fig. 5
Operation
06/2023EcoGun ACE - MSG00025EN10/32

Air cap LVLP/LF
The air cap LVLP is used for applications
requiring a good transfer rate and spray pat-
tern.
Properties of the air cap LVLP:
nMist arm
nTransfer rate > 75%
nAir consumption: see characteristic curve
Fig. 5
6.4 Changing the air cap
Personnel:
nOperator
n + additional qualification explosion pro-
tection
Protective equipment:
nProtective workwear
nProtective gloves
Remove air cap
Fig. 6: Loosen cap nut
1. Loosen the cap nut (1) counterclockwise.
Fig. 7: Removing the air cap
2. Remove air cap (1).
Assemble air cap
Fig. 8: Placing the air cap
3. Fit air cap (1).
Operation
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Fig. 9: Tighten cap nut
4. Turn cap nut (1) clockwise.
5. Align air cap as required Ä 6.5 “Align-
ment of the air cap”.
6.5 Alignment of the air cap
Personnel:
nOperator
n + additional qualification explosion pro-
tection
Protective equipment:
nProtective workwear
nProtective gloves
The position of the air cap determines the
alignment of the spray pattern.
Fig. 10: Align air cap
1. Turn the air cap as required for the
desired spray pattern.
Operation
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6.6 Guiding the spray gun
Personnel:
nOperator
n + additional qualification explosion pro-
tection
Protective equipment:
nProtective gloves
nSafety boots
nProtective workwear
nEye protection
nRespiratory protection device
nUse ear protection
Fig. 11: Guide the spray gun
1. Guide spray gun as follows:
nGuide spray gun at 90 degrees to the
surface to be painted.
nMaintain a distance of 15 to max.
25cm to the surface to be painted.
The distance can vary for effect
coatings.
7 Cleaning
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.
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 ventilation, in painting
booths, according to EN 16985.
nNote explosion group of the fluid.
nObserve the security data sheets of the
media being used.
nEnsure that forced ventilation and fire
protection equipment are in operation.
nDo not use sources of ignition and
open light.
nDo not smoke.
nCheck grounding.
WARNING!
Danger from harmful or irritant sub-
stances
Serious injuries or death can result if you
come into contact with dangerous fluids or
steam.
nSpray gun 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.
nAvoid contact (e.g. with eyes, skin).
Cleaning
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WARNING!
Escaping material and compressed air
Escaping material under pressure can
cause serious injuries.
Before carrying out any work:
nDisconnect the system, in which the
spray gun is installed, from com-
pressed air and material supply.
nSecure system personalized from
being switched on again.
nDepressurize the lines.
WARNING!
Danger of explosion due to chemical
reactions
Material, halogenated hydrocarbon-based
rinsing agent or cleaning agent can chem-
ically react with aluminum components of
the product. Chemical reactions can cause
explosions. Serious injury and death could
be the consequence.
nOnly use purging agents and cleaning
agents that do not contain any halo-
genated hydrocarbons.
NOTICE!
Unsuitable cleaning agents
Unsuitable cleaning agents can damage
the spray gun.
nOnly use cleaning agents approved by
the material manufacturer.
nObserve the security data sheets of the
media being used.
nPlace heavily soiled components in a
cleaning bath.
–Only place those parts in the
cleaning bath, which are suitable for
the cleaning bath.
Never place the entire spray gun in
the cleaning bath.
– Use only electrically conductive
containers.
– Ground the container.
–Do not use ultrasound baths.
nUse alcohols (isopropanol, butanol) for
non-flammable coating materials.
nRemove dried non-flammable coating
materials using a material manufacturer-
approved organic thinner.
NOTICE!
Damage due to unsuitable cleaning
tools
Unsuitable cleaning tools can damage the
product.
nOnly use cloths, soft brushes and
paintbrushes.
nDo not use abrasive cleaning tools.
nDo not poke blocked nozzles with met-
allic objects.
nDo not use compressed air for
cleaning.
nDo not use any thinner spray guns.
nDo not use high pressure for cleaning
agents.
Cleaning
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7.2 Cleaning
Personnel:
nOperator
n + additional qualification explosion pro-
tection
Protective equipment:
nProtective gloves
nSafety boots
nProtective workwear
nEye protection
nRespiratory protection device
nUse ear protection
1. Disconnect the air hose from the spray
gun.
2. Ensure the ambient temperature is at
least 15K below the flashpoint of the
cleaning agent.
3. Remove material residue with cloth or
soft brushes.
4. Clean the spray gun carefully and dry it
with a soft cloth.
8 Maintenance
8.1 Safety notes
WARNING!
Unsuitable spare parts in explosive
areas
Spare parts not compliant with the specifi-
cations of the ATEX directives can cause
explosions in an explosive atmosphere.
Serious injury and death could be the con-
sequence.
nUse exclusively original spare parts.
WARNING!
Escaping material and compressed air
Escaping material under pressure can
cause serious injuries.
Before carrying out any work:
nDisconnect the system, in which the
spray gun is installed, from com-
pressed air and material supply.
nSecure system personalized from
being switched on again.
nDepressurize the lines.
8.2 Maintenance schedule
The maintenance intervals given below are based on experiential values. Adjust maintenance
intervals individually if necessary.
Interval Maintenance work
after each use Clean Ä 7.2 “Cleaning”.
monthly Lubricate lever bearing Ä 11.8 “Operating and auxiliary materials”.
Maintenance
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9 Faults
9.1 Defects table
Visualizer of typical spray pattern problems
Spray pattern Fault identification
Spray jet is not circular.
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
Round spray jet is not developing
in spite of concluded flat jet con-
trol.
Cap nut is not correctly
tightened.
Tighten cap nut.
Plastic nozzle is dirty. Clean nozzle seat.
Spray jet is bent or tapered. Bores in the air cap are
soiled or damaged.
Clean and check air cap.
Replace air cap if defective
Ä 7.2 “Cleaning”.
Dried material residue on
the plastic nozzle
Clean plastic nozzle.
Faults
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Fault description Cause Remedy
Plastic nozzle is damaged. Replace plastic nozzle.
Spray jet is too thick in the
middle.
Material too viscous Change material consistency.
Air pressure too low Increase the air pressure via
the air control.
Spray jet is split. Material too thin Change material consistency.
Air pressure too high Decrease the air pressure via
the air control.
Spray jet is uneven. The spray
pattern quality is bad.
There is not enough mate-
rial in the cup.
Top up material.
Cap nut is not correctly
tightened.
Tighten cap nut.
The ventilation bore in the
cup is closed.
Open the ventilation bore in
the cup.
Leakage on the needle seal or in
front on the nozzle
Needle is soiled, worn, or
damaged.
Clean needle and replace if
necessary Ä 9.2.1 “Replace
the needle.”.
Spray gun is losing air with non-
actuated trigger.
Valve is defective. Replace valve Ä 9.2.2
“Replacing valve seal”.
Valve seal is worn out. Replace valve seal Ä 9.2.2
“Replacing valve seal”.
Air escapes at the air control. O-ring is worn out. Replace O-ring Ä 9.2.3
“Replace O-ring on the air
control”.
Air escapes on the flat jet control. O-ring is worn out. Replace O-ring Ä 9.2.4
“Replace O-ring on the cir-
cular jet control .”.
Air escapes at the air connection. O-ring is worn out. Replace air connection
Ä 9.2.5 “Replace air connec-
tion”.
Quick Clip technology cannot be
used as required.
Locknut and stop screw
are not tightened together.
Tighten locknut and stop
screw together.
Faults
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Fault description Cause Remedy
Material has leaked into
Quick Clip closure and
dried out.
Clean Quick Clip closure
Ä 7.2 “Cleaning”.
9.2 Troubleshooting
9.2.1 Replace the needle.
The integrated Quick Clip technology allows
for removal and installation of the needle
without changing the preset needle stop.
Personnel:
nOperator
n + additional qualification explosion pro-
tection
Protective equipment:
nProtective gloves
nSafety boots
nProtective workwear
nEye protection
nRespiratory protection device
nUse ear protection
Remove needle
Fig. 12: Replace needle
1. NOTICE!
The stop screw is spring pretensioned.
When you loosen the stop screw it
might fall off.
Hold onto stop screw (6) while removing
it.
2. Counter the locknut (5) on the clip (4).
3. Press stop screw (6) into the spray gun.
4. Turn stop screw (6) ¼ turn counter clock-
wise.
ðThe spring on the needle (2) pushes
the stop screw (6) out.
5. Pull out the stop screw (6).
6. Remove compression spring (3).
Faults
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7. Pull back the trigger (1).
8. Pull out the needle (2) towards the back.
Inserting the needle
Fig. 13: Inserting the needle
1. Insert needle (1).
2. Fit compression spring (2).
3. Press stop screw (5) against the com-
pression spring back into the body of the
spray gun. One of the nibs (6) of the clip
(3) must be in the 11o’clock position.
4. Turn stop screw (5) clockwise until fas-
tened.
ðStop screw (5) is pushed back into its
initial position.
5. Set the material quantity Ä 5 “Commis-
sioning”.
9.2.2 Replacing valve seal
Personnel:
nOperator
n + additional qualification explosion pro-
tection
Protective equipment:
nProtective workwear
nProtective gloves
Fig. 14: Removing the lever screw and lever
axle
1. Loosen and remove the lever screw (1).
2. Remove the lever axle (2).
Fig. 15: Replacing the valve gland seal
3. Pull off the trigger (1).
4. Unscrew the valve gland (2) to the front.
Faults
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5. Loosen the sealing screw (7).
6. Pull out the compression spring (6)
towards the back.
7. Pull out valve pin (4) and seal (5) towards
the back.
8. Pull out the valve gland (3) to the front.
9. Insert the valve pin (4) and seal (5).
10. Insert compression spring (6).
11. Clean locking screw (7).
12. Wet locking screw (7) with thread
sealant. Use LABS-free and low-grade
thread sealant Ä 11.8 “Operating and
auxiliary materials”.
13. Tighten locking screw (7).
14. Insert a new valve gland seal (3).
15. Screw-in the valve gland (2).
16. Push the trigger (1) over the spray gun.
Fig. 16: Installing the lever screw and lever
axle
17. Insert lever axle (2).
18. Tighten the lever screw (1).
9.2.3 Replace O-ring on the air control
Personnel:
nOperator
n + additional qualification explosion pro-
tection
Protective equipment:
nFace protection
nProtective workwear
nProtective gloves
Fig. 17: Replace O-ring on the air control
1. Unscrew sealing screw (1).
2. Pull out the air control (3).
3. Pull off O-ring (4).
4. Pull up new O-ring (4).
5. Wet new O-ring (4) with lubricant Ä 11.8
“Operating and auxiliary materials”.
6. Insert air control (3) into the housing (2).
7. Clean sealing screw (1) Ä 7.1 “Safety
recommendations ”.
Faults
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