GB
Operating instructions
Automatic Spray Gun A-12
T-Dok-042-GB-Rev.2
■ 200-0150
Translation of the original operating instructions
Thank you for selecting a Krautzberger product.
This product has been manufactured following state-of-the-art manufacturing procedures and
extensive quality assurance measures. We promise you a product of the highest quality.
If you have questions, requests or suggestions, please contact us. We are always glad to assist
you.
Information about the operating manual
This manual provides important information on how to work with the device safely and efficiently.
The manual is part of the device, must always be kept in the device's direct proximity and should
be available to the personnel at all times.
The personnel must have read and understood this manual before starting any work. Compliance
with all specified safety information and instructions is a basic requirement for safe working conditions.
In addition, the local occupational safety regulations and general safety rules apply for the area of
application of the device.
Due to optional finishing variants, it is possible that the figures shown in this operating manual
deviate from your device.
Information about explosion protection
Many of our competitors have been marking their products with the Ex symbol as a matter of principle for some time now.
At Krautzberger we do not do this.
We engineer and manufacture our products in line with currently applicable directives.
If the labelling on the product is required, it is affixed to the product as the result of the necessary
analysis of ignition sources. If no labelling is affixed, the analysis of ignition sources and previous
experience with the assessment of the suitability of products for use in a potentially explosive area
have shown that the product described in this operating manual does not represent a potential
source of ignition, with the exception of electrostatic charge.
Taking into account the potential equalisation (provided by proper earth connection), the use in an
area at risk for explosions is permitted in accordance with the current valid directives.
GB–2
mail@krautzberger.com, www.krautzberger.com
Automatic Spray Gun A-12
ENGLISH
Table of contents
1 Function and identification................................................................................................ 5
1.1 Function....................................................................................................................... 5
1.2 Identification................................................................................................................. 5
2 Safety and responsibility................................................................................................... 6
2.1 Labelling of the safety information............................................................................... 6
2.2 Safety information in operating instructions................................................................. 7
2.3 Personnel requirements............................................................................................... 7
2.4 Personal safety equipment and clothing...................................................................... 8
2.5 Responsibility of the system owner............................................................................. 9
2.6 Intended use.............................................................................................................. 10
2.7 General safety information......................................................................................... 11
3 Transport and storage..................................................................................................... 13
3.1 Transport................................................................................................................... 13
3.2 Storage...................................................................................................................... 13
3.3 Unpacking.................................................................................................................. 13
4 Overview............................................................................................................................ 14
5 Installation......................................................................................................................... 15
5.1 General installation information................................................................................. 15
5.2 Dimensions................................................................................................................ 15
5.3 Mounting the automatic spray guns........................................................................... 16
5.4 Connection scheme................................................................................................... 16
5.5 Connecting the automatic spray gun......................................................................... 18
5.6 Checking connections................................................................................................ 19
6 Commissioning................................................................................................................. 20
6.1 General Information about the commissioning.......................................................... 20
6.2 Operation................................................................................................................... 21
6.3 Adjusting the spray pattern........................................................................................ 22
6.4 Setting the zero point of the needle stroke setting..................................................... 23
6.5 Operation breaks....................................................................................................... 23
7 Maintenance...................................................................................................................... 24
7.1 Maintenance schedule............................................................................................... 24
7.2 Cleaning spray guns.................................................................................................. 25
7.3 Changing the air and fluid nozzles............................................................................. 26
7.4 Changing the fluid needle.......................................................................................... 27
7.5 Changing needle packing.......................................................................................... 29
8 Faults................................................................................................................................. 31
■ 200-0150
GB–3
Operating instructions
T-Dok-042-GB-Rev.2
9 Spare parts........................................................................................................................ 33
9.1 Spare parts................................................................................................................ 34
10 Accessories...................................................................................................................... 39
11 Disposal............................................................................................................................. 40
12 Technical data................................................................................................................... 41
12.1 Dimensions and weight............................................................................................ 41
12.2 General specifications............................................................................................. 41
12.3 Tightening torques................................................................................................... 41
13 Declaration of incorporation........................................................................................... 42
14 Notes.................................................................................................................................. 43
15 Index.................................................................................................................................. 44
mail@krautzberger.com, www.krautzberger.com GB–4
Automatic Spray Gun A-12
ENGLISH
1 Function and identification
1.1 Function
Automatic spray guns are used for the
n automatic coating/marking of surfaces
n dosing of fluids
n placement of adhesive or marking points
Typical spray fluids are paints, dyes, adhesives, glazes, enamels, debonding agents, etc.
The spray fluid is fed into the automatic spray gun under pressure. This pressure is typically generated by pumps or pressure containers. The automatic spray gun is controlled via compressed air.
Upon opening, the control piston charged with compressed air initially opens the air nozzle and
then with a short delay the fluid nozzle of the spray gun. Upon closing, initially the fluid nozzle and
then the air nozzle is closed in order to prevent a subsequent dripping of the spray fluid.
For the precise control of the automatic spray gun, electrically-activated solenoid valves can be
used, for example. Switching times of 60 ms can be achieved this way.
The spray fluid is atomised using compressed air. The geometry of the spray jet and the sprayed
quantity of the spray fluid can be adjusted with the following measures:
n Selection of the air and fluid nozzle
n Changing of the atomisation air pressure
n Changing of the spray fluid pressure
n Adjustment of the needle stroke on the regulator of the automatic spray gun.
The automatic spray gun also features the following additional characteristics:
n Transition part only in anodised aluminium or stainless steel
n Transition part with lower fluid connection
or simple fluid connection or with circulation connections
n Main element with flat jet regulator
or with flat and round jet regulator
1.2 Identification
Type Weight aluminium / stainless steel Length/width/h\ (mm) Product number
A-12 (HVLP)* 0.75 kg / 0.96 kg max. 178 / max. 142 / 74 200-0150
* HVLP = High Volume, Low Pressure
Further information can be found in (
■ 200-0150
Ä
Chapter 12 ‘Technical data’ on page 41)
GB–5
Operating instructions
T-Dok-042-GB-Rev.2
2 Safety and responsibility
2.1 Labelling of the safety information
This manual uses symbols to identify safety information. The safety information is preceded by
signal words that indicate the severity of the hazard.
DANGER!
This combination of symbol and signal word indicates an immediate dangerous situation
which causes death or severe injuries if it is not averted.
WARNING!
This combination of symbol and signal word indicates a possibly dangerous situation which
can cause death or severe injuries if it is not averted.
CAUTION!
This combination of symbol and signal word indicates a possibly dangerous situation which
can cause slight injuries if it is not averted.
NOTICE!
This combination of symbol and signal word indicates a possibly dangerous situation which
can cause property and environmental damage if it is not averted.
This symbol highlights useful tips and recommendations as well as information for efficient
and fault-free operation.
ENVIRONMENT!
This combination of symbol and signal word points out potential hazards for the environment.
mail@krautzberger.com, www.krautzberger.com GB–6
Automatic Spray Gun A-12
ENGLISH
2.2 Safety information in operating instructions
Safety information can refer to specific individual operating instructions. Such safety information is
embedded in the operating instructions so that they don't disrupt the reading flow during the execution of the action. The signal words described above are used.
Example:
1. Loosen screw.
2.
CAUTION!
Pinching hazard at the cover!
Carefully close cover.
3. Tighten screw.
2.3 Personnel requirements
WARNING!
Risk of injury in case of insufficient qualification of the personnel!
The system owner of the system/device is responsible for adhering to the qualifications.
If unqualified personnel carries out work on the device or steps into the danger zone of the
device, hazards arise which may cause severe injuries and significant material damage.
– All work must only be carried out by respectively qualified personnel.
– Unqualified personnel must be kept away from the hazard areas.
This manual identifies the qualifications of the personnel for the different scopes of work as listed
below:
Qualified personnel
Due to their specialised professional training, knowledge, and experience as well as knowledge of
the industry-specific standards and regulations, qualified personnel are in a position to perform
assigned tasks and to identify and avert potential risks on their own.
Only persons who can be expected to perform their tasks reliably are permitted as personnel. Persons whose reaction capability is impaired, e.g. through drugs, alcohol or medication are not permitted.
When selecting the personnel, the stipulations regarding age and occupation that apply at the location must be observed.
■ 200-0150
GB–7
Operating instructions
T-Dok-042-GB-Rev.2
Unauthorized persons
WARNING!
Risk of fatal injury for unauthorized person through hazards in the hazard zone and
work area!
Unauthorized persons, who do not fulfil the requirements described herein do not know the
dangers in the work area. Unauthorized persons are therefore subject to a risk of serious
injury including death.
– Keep unauthorized persons away from hazard zone and work area.
– If in doubt, address persons and tell them to leave the hazard zone and work area.
– Discontinue the work as long as unauthorized persons are present in the hazard zone
and the work area.
2.4 Personal safety equipment and clothing
Personal safety equipment is used to protect persons from impacts on safety and health at work.
The personnel must wear personal safety equipment while carrying out the various tasks and while
working with the device. The individual sections of this manual will indicate the personal safety
equipment separately.
Description of the personal safety equipment and clothing
The personal safety equipment and clothing is described below:
Ear protection
Ear protection provides protection against hearing damage.
Light respiratory protection
The light respiratory protection is used as a protection against hazardous dusts.
mail@krautzberger.com, www.krautzberger.com GB–8
Automatic Spray Gun A-12
ENGLISH
Protective gloves
Protective gloves protect hands from friction, abrasion, puncture wounds, or deeper injuries, as
well as from contact with hot surfaces.
Safety goggles
Safety goggles are used to protect the eyes from flying components and splashes of liquid.
2.5 Responsibility of the system owner
System owner
The system owner is the person, who directly operates the device for commercial or economical
purposes or who allows a third party to use/apply it and who is responsible for the legal product
responsibility for the protection of the user, the personnel or third parties.
System owner responsibilities
The device is used in a commercial environment. The system owner of the device is therefore subject to the obligations as stipulated by the Occupational Health and Safety Act.
In addition to the safety information in this manual, the country-specific safety, accident prevention
guidelines and environmental protection regulations, applicable at the site of implementation must
be adhered to.
The following shall apply in particular:
n The system owner must familiarize himself with the applicable occupational safety regulations
and also conduct a risk assessment to determine risks that may arise due to the specific
working conditions at the place of use of the device. The risk assessment must be implemented in the form of operating instructions for operating the device.
n The system owner must check throughout the entire implementation period of the device,
whether the work instructions that the owner has created satisfy current legislation and must
adapt the instructions if necessary.
n The system owner must clearly regulate and specify responsibilities for installation, operation,
repair of malfunctions, maintenance, and cleaning.
n The system owner must ensure that all employees, who handle the device, have read and
understood this manual. In addition, the system owner must train personnel at regular intervals and inform the personnel of the hazards.
n The system owner must provide the personnel with the necessary protective gear and make
the wearing of the necessary protective gear mandatory.
■ 200-0150
GB–9
Operating instructions
T-Dok-042-GB-Rev.2
Furthermore, the system owner is responsible for making sure that the device is always in perfect
technical condition. Therefore, the following applies:
n The system owner must ensure that the maintenance intervals described in this operating
manual are adhered to.
n The system owner must have all safety equipment checked regularly for functionality and
completeness.
2.6 Intended use
The automatic spray gun serves the purpose of automatic coating of metal, plastic, ceramic,
wood, as well as other suitable surfaces, dosing of fluids, placement of adhesive and marking
points. Typical coating materials include paints, dyes, water-soluble paints, adhesives, glazes,
enamels, debonding agents etc.
The automatic spray gun can be operated both as an independent device as well as in a larger
system (e.g. as a component of a fully-automatic coating system as well as a spray robot).
Intended use also includes adherence to all the specifications in this manual.
Any use beyond the intended use or any other use constitutes improper use.
WARNING!
Danger due to improper use!
Improper use of the automatic spray gun can cause dangerous situations.
– Only carry out the installation and commissioning according to the steps described in this
operating manual.
– Make sure that the utilised hose lines fulfil the requirements with respect to pressure,
chemical and mechanical loads.
– Always observe the applicable country-specific safety, accident prevention, occupational
safety, and environmental protection regulations for the area of use for the automatic
spray gun.
– Do not use sharply abrasive, chemically aggressive, very hot or very cold spray media
without first consulting with and receiving approval from Krautzberger GmbH.
– Adhere to the spray media manufacturer's safety data sheets.
– Only use the manufacturer's original spare parts.
– Only operate the automatic spray gun after proper fastening on a suitable carrier con-
struction.
– Do not hold the automatic spray gun in your hand during operation.
– Only operate the automatic spray gun while adhering to the values specified in the (
Ä
Chapter 12 ‘Technical data’ on page 41).
– Make sure that the connected compressed air is oil-free and free of solid matter.
– Operate the automatic spray gun with processed, dried compressed air (air quality pur-
suant to DIN ISO 8573-1: grade 4).
– Never point the compressed air at living beings.
– Do not operate the automatic spray gun in areas that are at risk for explosions.
No claims of any type can be asserted due to damage resulting from improper use.
mail@krautzberger.com, www.krautzberger.com GB–10
Automatic Spray Gun A-12
ENGLISH
2.7 General safety information
WARNING!
Life threatening risk of injury or property damage through the application of hazardous
media!
The application of hazardous media can lead to death, serious injuries or property damage.
– Ensure the resistance of the machine against the medium that is to be applied.
– Always adhere to the safety data sheet of the medium that is to be applied.
WARNING!
Risk of injury through the use of incorrect spare parts!
The use of incorrect or defective spare parts can cause risks for the personnel as well as
damage, malfunctions or complete failure.
– Only use original spare parts from Krautzberger or spare parts that have been approved
by Krautzberger.
– In case of questions, always contact our service department.
CAUTION!
Risk of injury through compressed air!
Uncontrolled leaks of compressed air can lead to serious injuries!
– Prior to any work on the device, all compressed-air lines must be closed and bleed if nec-
essary.
WARNING!
Sound pressure level
Depending on the operating conditions, the sound pressure of the device may cause hearing
damage.
Take suitable action to reduce the impact of the existing sound pressure level. The owner is
responsible for the type and implementation of suitable measures, which may depend on the
local conditions.
■ 200-0150
GB–11
Operating instructions
T-Dok-042-GB-Rev.2
NOTICE!
Property damage due to incorrect installation
Incorrect installation can lead to property damage.
– Check all lines and machines for a tight seat prior to commissioning.
Outdoor operation and operation in exterior areas!
Use suitable measures to protect the device during the operation from environmental impacts
in an exterior area through:
– Moisture
– UV radiation
– Frost, etc.
ENVIRONMENT!
Environmental hazard due to incorrect disposal!
Incorrect disposal may cause environmental hazards.
– After the useful life of the device has been exhausted, dispose of it via the commercial
waste.
– Properly dispose of potential spray fluid residue separately from the device.
– If in doubt, obtain information about environmentally-appropriate disposal with the local
municipalities or specialized disposal companies.
mail@krautzberger.com, www.krautzberger.com GB–12
Automatic Spray Gun A-12
ENGLISH
3 Transport and storage
3.1 Transport
n The automatic spray gun is protected by cardboard packaging.
n The cardboard packaging can be reused for storage.
3.2 Storage
Store packages subject to these conditions:
n Do not store outside.
n Dry and dust-free storage.
n Keep away from any aggressive media.
n Protect from UV radiation.
n Avoid mechanical shocks.
n Storage temperature: 5 to 35 °C.
n Relative atmospheric humidity: max. 60%.
n For storage for longer than 3 months, check the general condition of all parts of the packaging
on a regular basis. If necessary, refresh or renew the conservation.
It is possible that there are notes on the packing pieces concerning the storage that extend
beyond the requirements listed here. Follow those accordingly.
3.3 Unpacking
Immediately upon receipt check the delivery for completeness and damage from transport.
In the event of visible exterior transport damage, proceed as follows:
n Do not accept delivery or only do so with reservations.
n Record scope of damage on the transport documents or on the bill of delivery of the shipping
company.
n Initiate complaint.
Report any damage as soon as it has been detected. Damage claims can only be asserted
within the applicable complaint period.
■ 200-0150
GB–13
Operating instructions
4 Overview
Fig. 1: Overview
1 Air nozzle (flat, round, rotary jet or full-
cone rotary jet)
2 Clamping nut
3 Transition part
4 Main element
5 Closing piece
6 Adjustment nut for needle stroke
7 Connection angle (simple fluid connection)
8 Round jet regulator (R) (option)
T-Dok-042-GB-Rev.2
9 Flat jet regulator (F)
10 Connection angle (option circulation con-
nection)
11 Connection angle (lower fluid connection)
12 Fastening hole
13 Connection control (St)/atomisation air (Z)
14 Fluid nozzle (flat, round, rotary jet or full-
cone rotary jet)
15 Fastening screws
mail@krautzberger.com, www.krautzberger.com GB–14
Automatic Spray Gun A-12
ENGLISH
5 Installation
Personnel:
Qualified personnel
n
Protective equipment:
Protective gloves
n
5.1 General installation information
Adhere to the following general information for the installation:
n Only carry out the installation and commissioning according to the steps described in this
operating manual.
n Make sure that the utilised hose lines meet the requirements for pressure, chemical and
mechanical loads.
n Only operate the automatic spray gun after proper fastening on a suitable carrier design.
n Make sure that the connected compressed air is oil-free and free of solid matter.
n Operate the automatic spray gun with processed, dried compressed air (air quality pursuant to
DIN ISO 8573-1: grade 4).
n Vibration and recoil forces may occur on the automatic spray gun during operation. Ensure
sufficient fastening.
n Never point the compressed air at living beings.
5.2 Dimensions
Fig. 2: Dimensions
■ 200-0150
GB–15
Operating instructions
T-Dok-042-GB-Rev.2
5.3 Mounting the automatic spray guns
Fig. 3: Mounting the automatic spray gun
1. Slide the spray gun with the fastening hole ( Fig. 3/1) over an on-site retaining bolt (Æ = 12
mm).
2.
Fasten the automatic spray gun with the screws ( Fig. 3/2) (tightening torque:
Ä
Chapter 12
‘Technical data’ on page 41).
3. Ensure proper earth connection of the automatic spray gun.
5.4 Connection scheme
Air and fluid supply
Fig. 4: Air and fluid supply
St Control air
Z Atomisation air
DV Pressure regulator valve
O/S
Opener/closer with bleed
(E)
H Tap
M Material
F Filter
DE Pressure generator
–––– Fluid supply
- - - - Air supply
mail@krautzberger.com, www.krautzberger.com GB–16
Automatic Spray Gun A-12
Fluid supply for circulation connection
Fig. 5: Fluid supply for circulation
DE Pressure generator
RR Back pressure regulators
RW Stirrer mechanism
M Material
F Filter
––– Fluid supply
ENGLISH
■ 200-0150
GB–17
Operating instructions
T-Dok-042-GB-Rev.2
5.5 Connecting the automatic spray gun
See also Ä Chapter 5.4 ‘Connection scheme’ on page 16.
WARNING!
Danger of injury due to improper connection!
When the fluid supply is pressurised, e.g. from pressure containers or with pumps, the range
of the fluid jet can increase by a multiple in case of atomisation air failure. This presents a
hazard to people and property.
– Make sure that the fluid supply and the control air are interrupted if the atomisation air
pressure drops off quickly.
– It is recommended to regulate the atomisation air pressure via a filter pressure reducer.
The connections for control and atomisation air are marked with letter abbreviations.
Fig. 6: Connecting the automatic spray gun
1. Connect the control air to input "St" ( Fig. 6/2).
2. Connect the atomisation air to input "Z" ( Fig. 6/4).
3. Connect the fluid line to ( Fig. 6/1 or 3).
4. For models with circulation connection, connect the second fluid line to the fluid connection
( Fig. 6/5).
mail@krautzberger.com, www.krautzberger.com GB–18
Automatic Spray Gun A-12
ENGLISH
5.6 Checking connections
1. Disconnect spray medium supply.
Fig. 7: Checking closures
2. Completely open the round jet regulator ( Fig. 7/2, if present) and the flat jet regulator (
Fig. 7/1) . To do this, turn the regulator counter-clockwise up to the stop.
3. Open the adjusting nut ( Fig. 7/3) of the needle stroke adjustment maximum 5.5 mm (
Fig. 7). To do so, turn the adjusting nut ( Fig. 7/3) counter-clockwise.
One turn of the needle stroke adjustment moves the needle by 1 mm and corresponds
to 18 positions.
No air may escape from the automatic spray gun.
ð
4. Open the control air.
The needle of the fluid nozzle must push itself back and air must escape from the air
ð
nozzle.
5. Close the control air again.
6. Establish fluid supply.
No spray fluid may escape from the spray gun.
ð
■ 200-0150
GB–19
Operating instructions
T-Dok-042-GB-Rev.2
6 Commissioning
Personnel:
Qualified personnel
n
Protective equipment:
Ear protection
n
Light respiratory protection
n
Safety goggles
n
WARNING!
Life threatening risk of injury or property damage through the application of hazardous
media!
The application of hazardous media can lead to death, serious injuries or property damage.
– Ensure the resistance of the machine against the medium that is to be applied.
– Always adhere to the safety data sheet of the medium that is to be applied.
CAUTION!
Risk of injury through compressed air!
Uncontrolled leaks of compressed air can lead to serious injuries!
– Prior to any work on the device, all compressed-air lines must be closed and bleed if nec-
essary.
WARNING!
Sound pressure level
Depending on the operating conditions, the sound pressure of the device may cause hearing
damage.
Take suitable action to reduce the impact of the existing sound pressure level. The owner is
responsible for the type and implementation of suitable measures, which may depend on the
local conditions.
6.1 General Information about the commissioning
Adhere to the following general information for the commissioning:
n Only carry out the commissioning of the automatic spray gun pursuant to the steps described
in this operating manual.
n Check the material and compressed air hose lines before each use for damage and tight fit.
mail@krautzberger.com, www.krautzberger.com GB–20
Automatic Spray Gun A-12
ENGLISH
n Always observe the applicable country-specific safety, accident prevention, occupational
safety, and environmental protection regulations for the area of use for the automatic spray
gun.
n Do not use sharply abrasive, chemically aggressive, very hot or very cold spray media without
first consulting with and receiving approval from Krautzberger GmbH.
n Adhere to the spray media manufacturer's safety data sheets.
n Only operate the automatic spray gun while adhering to the values specified in the (
Ä
Chapter 12 ‘Technical data’ on page 41).
n Only operate the automatic spray gun after proper fastening on a suitable carrier design.
n Do not hold the automatic spray gun in your hand during operation.
n Never point the compressed air at living beings.
n Adhere to the operating manuals for the respective components
6.2 Operation
To achieve optimal results, adhere to the following:
– Rinse the automatic spray gun with cleaning products before commissioning.
– Too-high air pressure causes unnecessarily high air consumption and too-strong atomi-
sation of the spray fluid.
– Too-low air pressure produces an unsatisfactory spray pattern.
– Select the lowest possible fluid pressure.
1. Make sure that the control air and atomisation air connections are not reversed.
2. Close the control air (connection "St").
3. "Open" fluid feed.
Depending on the type of fluid feed, the "opening" of the fluid feed is carried out
– By opening the connection tap
– By applying pressure to the storage container
– By filling the fluid into a storage container (hydrostatic inherent pressure).
4. Open the control air.
The fluid is sprayed. Generally, the adjustment of the spray pattern is now required (
ð
Ä
Chapter 6.3 ‘Adjusting the spray pattern’ on page 22).
■ 200-0150
GB–21
Operating instructions
T-Dok-042-GB-Rev.2
6.3 Adjusting the spray pattern
Fig. 8: Adjusting the spray pattern
1. Open the adjusting nut ( Fig. 8/3) of the needle stroke adjustment maximum 5.5 mm (
Fig. 8). To do so, turn the adjusting nut ( Fig. 8/3) counter-clockwise.
2. Completely close the flat jet regulator ( Fig. 8/1).
3. Completely open the round jet control ( Fig. 8/2).
Do not close the round jet regulator ( Fig. 8/2) completely during operation.
4. Adjust the flat jet on the flat jet regulator ( Fig. 8/1).
5. Continue adjusting settings on the regulators ( Fig. 8/1 and 2) until the desired spray pat-
tern is achieved.
It is recommended that you only adjust the spray pattern with the regulators ( Fig. 8/1
and 2). The fluid quantity should only be changed if the desired spray pattern cannot
be adjusted with the regulators ( Fig. 8/1 and 2). A limited fine adjustment, e.g. for the
adjustment of several spray guns in a system, can be made using the adjustment nut (
Fig. 8/3).
In order to obtain reproducible settings, the zero point should be checked and if necessary set after each maintenance ( Ä Chapter 6.4 ‘Setting the zero point of the needle
stroke setting’ on page 23).
mail@krautzberger.com, www.krautzberger.com GB–22
Automatic Spray Gun A-12
ENGLISH
6.4 Setting the zero point of the needle stroke setting
Fig. 9
1. Close the air feed.
2. Turn the adjustment nut ( Fig. 9/1) by turning clockwise.
3. Open fluid feed.
4. Open the control air feed.
5. Slowly open the adjustment nut ( Fig. 9/1) turning counter-clockwise until fluid escapes.
6.5 Operation breaks
1. End the spray procedure by switching on the control air (connection "St").
The atomiser air (connection "Z") is automatically closed in the automatic spray gun.
Interrupt the spray fluid supply.
2.
3.
If necessary, clean the spray gun (
■ 200-0150
Ä
Chapter 7.2 ‘Cleaning spray guns’ on page 25).
GB–23
Operating instructions
T-Dok-042-GB-Rev.2
7 Maintenance
Personnel:
Qualified personnel
n
Protective equipment:
Protective gloves
n
Safety goggles
n
WARNING!
Risk of injury through the use of incorrect spare parts!
The use of incorrect or defective spare parts can cause risks for the personnel as well as
damage, malfunctions or complete failure.
– Only use original spare parts from Krautzberger or spare parts that have been approved
by Krautzberger.
– In case of questions, always contact our service department.
CAUTION!
Risk of injury through compressed air!
Uncontrolled leaks of compressed air can lead to serious injuries!
– Prior to any work on the device, all compressed-air lines must be closed and bleed if nec-
essary.
7.1 Maintenance schedule
The following sections describe the maintenance work that is required for optimal and fault-free
operation of the device. Check wearing parts such as seals, nozzles, and needles at regular intervals. The level of wear depends on the abrasiveness of the spray fluid used. Escaping air and
spray fluid as well as the deterioration of the spray pattern are signs that parts are worn. In case of
questions about maintenance work and intervals, contact the manufacturer; see contact information on the last page.
Interval Maintenance work Personnel
Before performing any
maintenance work
if needed
Clean automatic spray gun ( Ä Chapter 7.2
‘Cleaning spray guns’ on page 25)
Change fluid and air nozzle ( Ä Chapter 7.3
‘Changing the air and fluid nozzles’ on page 26)
Change fluid needle ( Ä Chapter 7.4 ‘Changing
the fluid needle’ on page 27)
Change needle packing ( Ä Chapter 7.5
‘Changing needle packing’ on page 29)
mail@krautzberger.com, www.krautzberger.com GB–24
Qualified personnel
Qualified personnel
Qualified personnel
Qualified personnel
Automatic Spray Gun A-12
ENGLISH
7.2 Cleaning spray guns
WARNING!
Danger of injury due to improper cleaning!
– Observe the safety data sheets of the cleaning product manufacturer.
– Do not immerse the automatic spray gun entirely in cleaning product.
1.
Interrupt operation ( Ä Chapter 6.5 ‘Operation breaks’ on page 23).
2. Switch off the system and secure it against being switched on again.
3. Connection cleaning product to fluid input.
For design with circulation connection (optional), connect the fluid circulation line.
4. Switch on the compressed air supply.
5. Begin the spray process by switching on the control air (connection "St") and the atomisa-
tion air (connection "Z").
6. Spray until the cleaning product runs clear.
7. Interrupt the cleaning product supply.
8. Blow out cleaning product residue by briefly switching on the control air.
9. Switch off the compressed air supply and secure it against restart.
10. Clean the outside of the device with a cloth dipped in cleaning product.
11.
Remove air and fluid nozzle ( Ä Chapter 7.3 ‘Changing the air and fluid nozzles’
on page 26) and clean with a soft brush. Do not use hard or sharp-edged objects. We rec-
ommend our brush set. See the last page for contact information.
12. Lightly grease sliding parts with suitable grease (e.g. type no. 7026-120-0351 of the manufacturer, contact information see last page).
■ 200-0150
GB–25
Operating instructions
7.3 Changing the air and fluid nozzles
Removing the nozzles
1.
Clean automatic spray gun ( Ä Chapter 7.2 ‘Cleaning spray guns’ on page 25)
Fig. 10: Changing the nozzles
2.
WARNING!
The closing piece ( Fig. 10/5) is under spring force!
Carefully unscrew the closing piece ( Fig. 10/5).
3. Loosen clamping nut ( Fig. 10/1).
4. Remove the air nozzle ( Fig. 10/2).
5. Unscrew fluid nozzle ( Fig. 10/3).
T-Dok-042-GB-Rev.2
Always change the fluid nozzle ( Fig. 10/3) and fluid needle ( Fig. 10/4) at the same
time ( Ä Chapter 7.4 ‘Changing the fluid needle’ on page 27).
Attaching the nozzles
1. Tighten the fluid nozzle ( Fig. 10/3).
2. Attach the air nozzle ( Fig. 10/2) and tighten it with the clamping nut ( Fig. 10/1).
3. Screw on the closing piece ( Fig. 10/5).
mail@krautzberger.com, www.krautzberger.com GB–26
Automatic Spray Gun A-12
7.4 Changing the fluid needle
Removing the fluid needle
1.
Clean automatic spray gun ( Ä Chapter 7.2 ‘Cleaning spray guns’ on page 25)
Fig. 11: Removing the fluid needle
2.
WARNING!
The closing piece ( Fig. 11/1) is under spring force!
Carefully unscrew the entire closing piece ( Fig. 11/1).
3. Remove the spring ( Fig. 11/2).
4. Take the entire valve shaft ( Fig. 11/3) out of the main element ( Fig. 11/4).
ENGLISH
Fig. 12: Removing the fluid needle
5. Loosen the nut ( Fig. 12/1) of the valve shaft pipe ( Fig. 12/4).
6. Remove the spring ( Fig. 12/2) and fluid needle ( Fig. 12/3) from the valve shaft pipe (
Fig. 12/4).
Fig. 13: Check the seals
7. Check the seals ( Fig. 13/1 to 6) for damage, replace if necessary.
■ 200-0150
GB–27
Operating instructions
T-Dok-042-GB-Rev.2
Attaching the fluid needle
Fig. 14: Attaching the fluid needle
1.
2. Push the fluid needle ( Fig. 14/3) and spring ( Fig. 14/2) into the valve shaft pipe (
Fig. 14/4).
3. Screw the nut ( Fig. 14/1) onto the valve shaft pipe ( Fig. 14/4).
Fig. 15: Attaching the fluid needle
4. Push the entire valve shaft ( Fig. 15/3) into the main element ( Fig. 15/4).
5. Attach the spring ( Fig. 15/2) and tighten it with the entire closing piece ( Fig. 15/1).
mail@krautzberger.com, www.krautzberger.com GB–28
Automatic Spray Gun A-12
ENGLISH
7.5 Changing needle packing
Removing needle packing
1.
Clean automatic spray gun ( Ä Chapter 7.2 ‘Cleaning spray guns’ on page 25
2.
Remove the fluid needle ( Ä Chapter 7.4 ‘Changing the fluid needle’ on page 27)
Fig. 16: Removing needle packing
3. Unscrew the screw ( Fig. 16/1) from the transition part ( Fig. 16/3) and the main element (/
2).
4. Remove the transition part ( Fig. 16/3) from the main element ( Fig. 16/2).
Fig. 17: Removing needle packing
5. Unscrew the seal screw ( Fig. 17/1).
6. Remove all of the needle packing ( Fig. 17/2) from the transition part ( Fig. 17/3).
7. Remove the seals ( Fig. 17/5) from the centring tubes ( Fig. 17/4).
■ 200-0150
GB–29
Operating instructions
Inserting the needle packing
Fig. 18: Inserting the needle packing
1. Insert entire needle packing ( Fig. 18/2) into the transition part ( Fig. 18/3).
2. Screw in the seal screw ( Fig. 18/1).
3. Place the seals ( Fig. 18/5) onto the centring tubes ( Fig. 18/4).
T-Dok-042-GB-Rev.2
Fig. 19: Inserting the needle packing
4. Insert the transition part ( Fig. 19/3) into the main element ( Fig. 19/2).
5. Screw the transition part ( Fig. 19/3) and main element ( Fig. 19/2) together with the screw (
Fig. 19/1).
6.
Attach the fluid needle ( Ä Chapter 7.4 ‘Changing the fluid needle’ on page 27)
mail@krautzberger.com, www.krautzberger.com GB–30
Automatic Spray Gun A-12
8 Faults
Personnel:
Qualified personnel
n
Fault table
Spray pattern Fault Cause Remedy
Normal flat jet spray pattern
ENGLISH
Spray pattern too
heavy towards the top
and towards the
bottom
Spray pattern concentrated on the left or
right side
Heavy application in
the centre of the spray
pattern
Split spray pattern
Spray pattern too thin
Fluid jet comes out in
spurts or flittering
n Dirty air nozzle
n Dirty fluid nozzle
n Clean nozzles (
Ä
Chapter 7.2
‘Cleaning spray
guns’ on page 25)
n Dirty air nozzle
n Dirty fluid nozzle
n Clean nozzles (
Ä
Chapter 7.2
‘Cleaning spray
guns’ on page 25)
n Too much fluid n Throttle fluid
supply
n Fluid too thick n Thin fluid
n Too little fluid n Increase fluid
supply
n Flat jet air pres-
sure too high
n Reduce flat jet air
pressure
n Union nut loose n Tighten union nut
n Insufficient fluid
supply
n Increase fluid
supply
n Blocked fluid path n Clean
■ 200-0150
GB–31
Operating instructions
Spray pattern Fault Cause Remedy
n Loose or dam-
aged fluid nozzle
n Tighten or replace
( Ä Chapter 7.3
‘Changing the air
and fluid nozzles’
on page 26)
n Worn needle seal n Change needle
seal ( Ä Chapter
7.5 ‘Changing
needle packing’
on page 29)
Leakage on the
clamping screw
n Needle seal
defective
n Change needle
seal ( Ä Chapter
7.5 ‘Changing
needle packing’
on page 29)
Fluid nozzle drips
n Worn or damaged
fluid needle
n Change fluid
needle (
Ä
‘Changing needle
packing’
on page 29)
n Dirty or damaged
fluid nozzle
n Clean (
Ä
‘Cleaning spray
guns’ on page 25)
or replace fluid
nozzle (
Ä
‘Changing the air
and fluid nozzles’
on page 26)
T-Dok-042-GB-Rev.2
Chapter 7.5
Chapter 7.2
Chapter 7.3
mail@krautzberger.com, www.krautzberger.com GB–32
Automatic Spray Gun A-12
ENGLISH
9 Spare parts
WARNING!
Risk of injury through the use of incorrect spare parts!
The use of incorrect or defective spare parts can cause risks for the personnel as well as
damage, malfunctions or complete failure.
– Only use original spare parts from Krautzberger or spare parts that have been approved
by Krautzberger.
– In case of questions, always contact our service department.
Spare parts order – General
To make spare part ordering easier, please provide the following information:
– Serial number
– Type
– Year
– Designation
– Item number according to spare parts list
– Quantity
– Desired shipping method (post, freight, sea, air, express)
– Delivery address
■ 200-0150
GB–33
9.1 Spare parts
Spare parts overview
Operating instructions
T-Dok-042-GB-Rev.2
Fig. 20: Spare parts
mail@krautzberger.com, www.krautzberger.com GB–34
Automatic Spray Gun A-12
Spare parts list
ENGLISH
Item Designation Article no. Additional infor-
mation
1 Union nut 040-0051
2 Air nozzle 060-.... Wear parts
3 Fluid nozzle 050-.... Wear parts
4 Flat seal 010-0354
5 Screw 030- Lightly
grease parts
6 Head section, alum. (incl. pos. 7, 8) 040-0263
Head section, VA (incl. pos. 7, 8) 040-0262
7 Air distributor ring 040-2711
8 Air distributor ring 040-2710
9 Flat seal 010-0362
10 Seal, compl. 080-0176
11 Reducing nipple 040-0420
12 Connection angle 030-2469
13 O-ring 010-0032
14 Screw plug 040-1205
15 Transition part, aluminium 040-0265
Transition part, stainless steel 040-0264
16 Screw plug 040-1510
17 O-ring 010-0188 Lightly
grease parts
18 Throttle valve, A-12 040-0117 HVLP
19a Packing, stainless steel/UHMW-PE 010-0694
Packing, stainless steel/PTFE 010-0695
Packing, stainless steel/NBR 010-0678
Packing, brass/NBR 010-0643
Packing, stainless steel/leather 010-0746
19.1a Flat seal 010-0184 Wear parts /
sealing set / lightly
grease parts
19.2a Slotted ring, UHMW 010-0364 Wear parts /
sealing set / lightly
grease parts
■ 200-0150
GB–35
Operating instructions
T-Dok-042-GB-Rev.2
Item Designation Article no. Additional infor-
mation
Slotted ring, PTFE 010-0365 Wear parts /
sealing set / lightly
grease parts
Slotted ring, NBR 010-0186 Wear parts /
sealing set / lightly
grease parts
19.3a Seal screw, brass 040-1507
Seal screw, stainless steel 040-2140
19b Packing, stainless steel 010-0366
Packing, brass 010-0312
19.1b Flat seal 010-0182 Wear parts / seal
set
19.2b Needle guide, brass 040-1496 Wear parts / seal
set
Needle guide, stainless steel 040-1499 Wear parts / seal
set
19.3b Disk, PA-6, A-10 010-0181 Wear parts /
sealing set / lightly
grease parts
Disk, PE 010-0212 Wear parts /
sealing set / lightly
grease parts
19.4b Spacer ring, brass 040-1500
Spacer ring, brass anodised 040-1501
Spacer ring, aluminium, hardened 040-1502
Spacer ring, stainless steel 040-1503
19.5b Guide bushing 010-0183 Wear parts / seal
set
19.6b Seal screw, brass 040-1208 Lightly
grease parts
Sealing screw, brass, nickel plated 040-1504 Lightly
grease parts
Sealing screw, aluminium, hardened 040-1505 Lightly
grease parts
Sealing screw, stainless steel (VA) 040-1506 Lightly
grease parts
20 Screw plug 040-1510
21 Circlip 030-0706
22 Catch spring 020-0024
mail@krautzberger.com, www.krautzberger.com GB–36
Automatic Spray Gun A-12
ENGLISH
Item Designation Article no. Additional infor-
mation
23 Jet regulator 080-0485
23a Scale disk 040-0212
24 Screw 030-0179 Lightly
grease parts
25 Slotted ring 010-0179
26 O-ring 010-0546
27 Valve housing 040-1515
28 O-ring 010-0213
29 Slotted ring 010-0178
30 Disk 040-1512
31 Main element 080-0050
32 Hexagonal head screw 030-0272 Lightly
grease parts
33 Cover clamp 040-1604
34 Enclosure part compl. 080-0506
34.1 Adjustment nut with thread 040-0067
34.2 Lock washer 020-0151
34.3 Ball 030-2730
34.4 Lock element 040-0076
35 Spring 020-0068 Lightly
grease parts
36 Nut 040-1601
37 Flat seal 010-0173
38 Shaft ring 040-1600
39 Slotted ring (PTFE) 010-0827 Lightly
grease parts
Slotted ring (Viton) 010-0185 Lightly
grease parts
40 Spring 020-0027 Lightly
grease parts
41 Fluid needle 070-.... Wear parts
41a Fluid needle with head reinforcement 070-.... Wear parts
42 Valve shaft pipe 040-1322
43 Seal 010-0180 Lightly
grease parts
■ 200-0150
GB–37
Operating instructions
T-Dok-042-GB-Rev.2
Item Designation Article no. Additional infor-
mation
44 Valve shaft guide 040-1516
45 Slotted ring 010-0190 Lightly
grease parts
mail@krautzberger.com, www.krautzberger.com GB–38
Automatic Spray Gun A-12
ENGLISH
10 Accessories
A wide range of accessories are available for the automatic spray gun. For further information, visit
us on the Internet (www.krautzberger.com) or contact your Krautzberger specialist dealer, consultant or our office staff.
Here are a few examples:
n Nozzle extensions
n etc.
■ 200-0150
GB–39
Operating instructions
T-Dok-042-GB-Rev.2
11 Disposal
If no return or disposal agreement has been made, recycle the dismantled parts. It is mandatory
that the currently applicable country-specific regulations and legal standards are adhered to. This
may entail:
n Scrap metals.
n Recycle plastic elements.
n Sort remaining components based on the respective material and dispose of accordingly.
In order to prevent damage to the environment, properly dispose of spray fluid residue separate
from the device.
mail@krautzberger.com, www.krautzberger.com GB–40
Automatic Spray Gun A-12
ENGLISH
12 Technical data
12.1 Dimensions and weight
Specification Value Unit
Width max. 142 mm
Height 74 mm
Length max. 178 mm
Connection of spray fluid G 3/8 "
Connection of atomisation air (internal thread) G 1/4 "
Connection of control air (internal thread) G 1/4 "
Weight aluminium design approx. 750 g
Weight stainless steel design approx. 960 g
12.2 General specifications
Specification Value Unit
Working pressure control air max. 4 - 8 bar
Working pressure spray fluid max. 12 bar
Working pressure atomisation air max. 8 bar
Sound pressure level depends on the nozzle approx. 73 - 96 dB(A)
Spray fluid temperature max. 50 °C
Control and atomisation temperature max. 50 °C
12.3 Tightening torques
The tightening torques need to be chosen based on the VDI 2230 or the standard literature (e.g.
Würth).
■ 200-0150
GB–41
Operating instructions
13 Declaration of incorporation
T-Dok-042-GB-Rev.2
Fig. 21: Declaration of incorporation
mail@krautzberger.com, www.krautzberger.com GB–42
Automatic Spray Gun A-12
ENGLISH
14 Notes
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
■ 200-0150
GB–43
Operating instructions
T-Dok-042-GB-Rev.2
15 Index
C
Cleaning ......................................................25
Connection values ................................................41
D
Delivery ......................................................13
Dimensions ....................................................41
F
Fault table .....................................................31
H
Hazards .......................................................6
Health .......................................................11
M
Measurements ..................................................15
O
Overview .....................................................14
P
Personal safety equipment and clothing ...................................8
Personnel ......................................................7
S
Safety equipment and clothing .........................................8
Safety information .................................................6
Spare parts list ..................................................35
Spare parts overview ..............................................34
Storage ......................................................13
System owner ...................................................9
T
Tightening torques ................................................41
Torsional moments ...............................................41
Transport inspection ...............................................13
U
User qualification .................................................7
W
Weight .......................................................41
mail@krautzberger.com, www.krautzberger.com GB–44
Krautzberger GmbH
Stockbornstraße 13
D-65343 Eltville am Rhein
Hotline: +49 (0) 6123 698-222
Reception: +49 (0) 6123 698-0
Fax: +49 (0) 6123 698-200
Email: mail@krautzberger.com
Internet: www.krautzberger.com
© Krautzberger GmbH 2016
© Krautzberger GmbH 2016
Loading...