Walther Systemtechnik SMS-05 User manual

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 1 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
Telefon: [phone] Telefax: [phone]
http://www.walther-2000.de –[e-mail]
Assembly Instructions
Spray Valve SMS-05
Article Number: S05-….
Figure: Spray Valve SMS-05 with flat-jet air cap and raster needle lock
NOTE
Please read the Assembly Instructions carefully before first using the incomplete device and
strictly adhere to the instructions!
The incomplete device may only be worked with and worked on by persons who are familiar
with the assembly instructions and the current regulations for industrial safety and accident
prevention.
Always keep this translated version of the “Original Assembly Instructions“ at the incomplete
device! The instructions have to be available anytime!

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 2 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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http://www.walther-2000.de –[e-mail]
Table of Contents
Page
EC DECLARATION OF INCORPORATION ....................................................................................................................... 4
1INTRODUCTION ................................................................................................................................................. 5
1.1 TARGET GROUP OF THE ASSEMBLY INSTRUCTIONS ............................................................................................................5
1.2 LIST OF SIGNS AND SYMBOLS .......................................................................................................................................5
2SAFETY............................................................................................................................................................... 5
2.1 GENERAL INFORMATION .............................................................................................................................................5
2.2 DANGERS FROM RESIDUAL ENERGY...............................................................................................................................5
2.3 WARRANTY AND LIABILITY...........................................................................................................................................5
2.4 CORRECT USE ...........................................................................................................................................................6
2.5 INCORRECT USE ........................................................................................................................................................6
2.6 QUALIFICATION OF PERSONNEL ....................................................................................................................................6
3TRANSPORT....................................................................................................................................................... 7
3.1 PACKAGING ..............................................................................................................................................................7
3.2 TASKS BEFORE TRANSPORT ..........................................................................................................................................7
4DESCRIPTION OF FUNCTION .............................................................................................................................. 7
4.1 DESIGNATED PURPOSE................................................................................................................................................7
4.2 TECHNICAL DATA .......................................................................................................................................................8
4.3 TYPE LABEL ..............................................................................................................................................................8
5MOUNTING AND FIRST START-UP ...................................................................................................................... 8
5.1 HOSE MOUNTING......................................................................................................................................................8
5.2 TOTAL VIEW /DESCRIPTION.........................................................................................................................................9
5.3 ADJUSTING THE DEVICE .............................................................................................................................................. 9
5.4 SMS-05 WITH RASTER NEEDLE SENSOR ......................................................................................................................10
5.4.1 Terminal Assignment for Needle Detection............................................................................................... 10
5.4.2 Terminal Assignment for Solenoid Valve ................................................................................................... 10
5.5 INSTALLATION DIAGRAM FOR COLOR MARKING SYSTEMS ................................................................................................11
6OPERATION ..................................................................................................................................................... 11
6.1 GENERAL INFORMATION ...........................................................................................................................................11
6.2 OPERATION INSTRUCTIONS /OPERATING CONDITIONS....................................................................................................11
6.3 OPERATING ELEMENTS .............................................................................................................................................12
7MAINTENANCE AND REPAIR............................................................................................................................ 13
7.1 GENERAL INFORMATION ...........................................................................................................................................13
7.2 CLEANING ..............................................................................................................................................................13
7.3 REPLACING THE SEALING SCREW ................................................................................................................................13
7.4 REPLACING NOZZLE AND NEEDLE................................................................................................................................14
7.5 REPLACING SEALING ELEMENTS (RASTER NEEDLE SENSOR)..............................................................................................14
7.6 MAINTENANCE FOR USE IN COLOR MARKING SYSTEMS (NORMAL OPERATION)...................................................................15
7.7 SPARE PARTS ..........................................................................................................................................................16
7.8 CUSTOMER SERVICE /SUPPORT..................................................................................................................................16
8TROUBLESHOOTING ........................................................................................................................................ 16
8.1 GENERAL INFORMATION ...........................................................................................................................................16
8.2 MALFUNCTIONS:.....................................................................................................................................................16
8.3 SPRAY IMAGE /TYPE OF DEFECT.................................................................................................................................17
9TAKING OUT OF SERVICE ................................................................................................................................. 18
9.1 SHORT INTERRUPTION ..............................................................................................................................................18
9.2 LONG-TERM INTERRUPTION.......................................................................................................................................18
9.3 SHUTDOWN OF DEVICE.............................................................................................................................................18

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 3 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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10 APPENDIX........................................................................................................................................................ 19
10.1 DIMENSIONED DRAWING SMS-05 ........................................................................................................................19
10.1.1 Spare Part Drawing SMS-05 ................................................................................................................. 20
10.1.2 Spare Part Liste SMS-05........................................................................................................................ 21
10.2 ARTICLE NUMBERS FOR AIR CAPS ..........................................................................................................................22
10.3 ARTICLE NUMBERS FOR NOZZLES ........................................................................................................................... 23
10.4 ARTICLE NUMBERS FOR NOZZLE NEEDLES................................................................................................................24
10.5 ARTICLE NUMBERS FOR VALVES .............................................................................................................................25
10.6 ARTICLE NUMBERS THREADED JOINTS.....................................................................................................................25
10.7 WEAR-AND-TEAR PARTS ......................................................................................................................................26
10.8 ACCESSORIES ..................................................................................................................................................... 27
10.8.1 Center hole for Centering sleeve 97320602.......................................................................................... 28
10.8.2 Add-on Elements .................................................................................................................................. 29
10.8.3 Description of Pneumatic Needle-Stroke Adjustment 978000037........................................................ 30

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 4 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
Telefon: [phone] Telefax: [phone]
http://www.walther-2000.de –[e-mail]
EC Declaration of Incorporation
in accordance with EU Machinery Directive 2006/42/EU, dated 17 May 2006, Appendix II B
We herewith confirm that the below mentioned incomplete device meets the basic requirements for safety
and health as stated in EU Machinery Directive 2006/42/EU for its design and construction as well as for the
configuration released by us on the market. This machine component will not be operated before it has been
determined that the incomplete system where the machine component will be installed also meets the
requirements of the Directive (2006/42/EG).
Manufacturer Walther Systemtechnik GmbH
Hockenheimer Straße 3
D- 76726 Germersheim
Description Spray valve SMS-05, Article No. S05-…
We also declare the conformity with other, product-relevant directives/guidelines:
Mach. Direct. 2006/42/EU App. I, Clause: 1.1.2, 1.1.3, 1.1.5, 1.1.6, 1.3.2, 1.3.3,
1.3.4, 1.5.1, 1.5.8, 1.5.9
EMC- Directive 2014/30/EU, dated 26. February 2014
Applied harmonized standards, in particular:
DIN EN ISO 12100 Safety of Machinery –General Design Principles –
Risk Assessment and Risk Reduction (ISO
12100:2010)
In addition, we also confirm that the special documentation according to Appendix VII Part B has
been prepared.
The manufacturer, respectively his authorized representative obligates himself to submit this documentation
to the market surveillance authorities, if requested.
This EC Declaration of Incorporation becomes invalid if the incomplete device will be altered or changed
without consent of Walther Systemtechnik GmbH.
Authorized representative for Technical Documentation:
Stefan Hirl, Hockenheimer Straße 3, D- 76726 Germersheim
Germersheim, 19 April 2018
(Place, Date) (Stefan Hirl, Management)

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 5 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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1 Introduction
1.1 Target Group of the Assembly Instructions
Operating Personnel
Maintenance Personnel
1.2 List of Signs and Symbols
The assembly instructions warn users of operations which may put their health at risk.
The warnings are indicated by combinations of text and symbols as follows:
DANGER
Describes a potentially dangerous situation.
Death, grievous bodily harm or severe material damage WILL occur if the respective
measures of precaution have not been taken
WARNING
Describes a potentially dangerous situation.
Death, grievous bodily harm or severe material damage MAY occur if the respective
measures of precaution have not been taken.
CAUTION
Describes a potentially dangerous situation.
Slight injuries CAN occur if the respective measures of precaution have not been taken. This
signal word is also used to describe possible property damages.
IMPORTANT
Indicates tips for usage and other particularly useful information.
No dangerous situation.
2 Safety
2.1 General Information
The construction of this device is according to the latest technology and is absolutely reliable. The individual
components as well as the complete device are continuously checked by our quality management.
2.2 Dangers from Residual Energy
Please instruct the operating personnel on the respective measures to be taken against the occurrence of
mechanical, hydraulic, pneumatic and electric / electronic residual energies.
2.3 Warranty and Liability
According to the conditions laid down by the German Engineering Association (VDMA), Walther Sys-
temtechnik GmbH has a guarantee of 12 months under normal European operating conditions on its own
parts (spare parts are excluded); or according to the conditions of the manufacturer.
This guarantee can only be granted by Walther Systemtechnik GmbH, if:
the user has thorough knowledge of the content of the assembly instructions;
the user follows the instructions and notes contained in the assembly instructions;
the user does not rebuild or make changes on parts of the device without prior consent of WST Sys-
temtechnik GmbH.

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 6 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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2.4 Correct Use
This device is a needle valve and will be used for processing materials which can be sprayed in continuous
or intermitting operation. Under no circumstances shall aggressive media such as acids, alkaline solutions,
detergents, chemicals or others be sprayed. If you are not sure, please contact the manufacturer if a certain
spray medium is suitable for this device.
2.5 Incorrect Use
Operating the incomplete device with insufficient knowledge about the operation, maintenance and care
of the device.
Making changes, extensions or alterations on the incomplete device that may hamper its safety without
the prior consent of Walther Systemtechnik GmbH.
Operating the incomplete device with defective safety installations or not properly attached or malfunc-
tioning safety devices.
Using unsuitable materials.
Handling the incomplete device while energized
2.6 Qualification of Personnel
Only trained and instructed personnel may conduct work on the equipment.
The responsibilities of the personnel for assembly work, operation, repair work or maintenance work must be
clearly assigned to individuals!
Persons in training may work with the equipment only under supervision of an experienced person.
Personnel
Task
Instructed
Personnel
Personnel with Technical
Qualification
Specialist
Supervisor
Packaging, Transport
X
-
-
-
Commissioning
X
X
-
Operation
X
-
Troubleshooting, general
X
X
-
Troubleshooting
mechanical
-
X
-
-
Troubleshooting electrical
-
-
X
-
Setting up
-
X
-
-
Maintenance
-
X
-
-
Repair
-
X
X
-
Taking out of service,
Storage
-
X
X
-

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 7 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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3 Transport
3.1 Packaging
The type of packaging depends on the individual mode of shipping. If not separately contracted, the
packaging is in accordance with the rules and regulations of Walther Systemtechnik GmbH. This rule is in
accordance with the Federal Association for Packaging HPE.
3.2 Tasks before Transport
The following has to be done before transport:
Disconnect all power lines.
The actual transport of the incomplete device and its individual parts requires special care in order to prevent
damages from external forceful impact or careless on- and off-loading. Depending on the mode of
transportation, suitable transport and load securing has to be selected. The incomplete device will be aligned
and leveled by appropriate fastening elements.
4 Description of Function
4.1 Designated Purpose
The spray valves of SMS-05 series are suitable for the application of liquid up to viscous media, such as
grease, oil, separating agents, colors or glues. One of the major characteristics of the SMS-05 series is the
stepless adjusting of the spraying width as well as the integrated control valve for pre air and purging air.
Depending on the viscosity of the medium to be applied, the application pattern can be individually adjusted
via the nozzle size, the atomizing air pressure and material pressure. The supply line of the atomizing air,
control air and the medium takes place via three hoses. Connections No. 7.0 and No. 8.0 are additional op-
tional material connections for the material circulation (i.e. circulation via nozzle head).
CAUTION
The use of other media can cause functional failures, material damages or even the
complete destruction of the device.
The SMS-05 Spraying Valve is an electro-pneumatically controlled application device. Extremely short
control air paths, facilitated by the directly attached 3/2-way solenoid valve (pos.18.0), bring about a fast and
very exact opening and closing of the needle (pos.13.0). The air valve (pos.12.0) connected with the needle
(pos.13.0) receives air pressure on the surface via the 3/2-way solenoid valve. This opens the air valve
(pos.12.0) such that the atomizing air (“pre air”) is released. Not until the spring (pos.12.4) is completely
compressed, the air valve (pos. 12.0) moves the needle (pos.13.0), and the medium comes out of the
nozzle. If the control air is switched off or fails, this spring (pos. 14.0) will cause the needle to close, whereby
the needle first closes the nozzle and thereafter the air valve (“purging air”) will close. The pre air and the
purging air help to keep the nozzle (pos. 3.0) clean.
The material pressure (1/8"-connection - pos. 5.0) must be adjusted to the desired spray pattern and, thus, to
the atomizing air pressure (1/8"-connection - pos. 17.0).
It can be used for continuous as well as intermittent spraying. The control air impulses (M5-connection - pos.
16.0) are transmitted to the working piston via the 3/2-way solenoid valve (pos. 18.0).
Depending on the particular application case it must be ensured that the control air is adjusted to the number
of operating cycles.

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 8 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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4.2 Technical Data
General Data
Dimensions [mm]
ca.126 x 22 x 82.5 with air cap –round jet
ca.129 x 22 x 82.5 with air cap –flat je
Weight [g]
ca. 500
Energy Supply
Control air pressure [bar]
4.5 –6
Atomizer air pressure [bar]
0.5 –5 (minimum 0.5 bar lower than control pressure)
Material pressure [bar]
max. 15 bar
4.3 Type Label
The type designation is etched in the casing. The serial number is
also inscribed in this area.
5 Mounting and First Start-up
The valves can be installed in any position. The spraying width for middle air (ML) and cone air (HL) can be
individually regulated. The possibility for using either round or flat spray air caps is given.
Vibrations of the valve caused by fast intermitting cycles require solid and tight installation. Excessive
machine vibrations to the valves should be avoided.
5.1 Hose Mounting
The three functional hoses will be connected as follows:
Atomizing air (blue)
Connection ZL (17.0): M5
Control air (black)
Connection SL (16.0): 1/8"
Material (transparent)
Connection M (5.0): 1/8"-to
pressure tank or pump
Material circulation (Op-
tional)
Connection M (5.0): M5 –to
pressure tank or pump
Material circulation (Op-
tional)
Connection M (5.0): M5- to
pressure tank or pump

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 9 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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5.2 Total View / Description
1
Basic casing
2
Nozzle with air cap and retainer ring
3
Raster needle lock
4
3/2-way solenoid valve
5
Material connection
6
Atomizer air connection
7
Control air connection
8
2x fastening thread M5
5.3 Adjusting the Device
The amount of material can be regulated via the stroke adjustment of the needle. A left turn of the regulating
knob increases the material amount. A fine precision thread affects a needle rise that results in an adjust-
ment of 0.5 mm with each turn of the adjusting knob.
IMPORTANT
Do not turn the regulating knob further to the left if no more stops are noticeable while turning
it! The maximum fluid outlet has been reached!
A further turning will damage the raster needle screw!
IMPORTANT
Nozzle and needle can be damaged by wrong handling. Only decrease the material flow (by a
right turn of the regulating knob) if material spills out. Do not turn the regulating knob further to
the right after the nozzle is closed!
NOTE
The duration of the post-spray air will be individually adjusted from outside at the spray valve.
Turn the regulating screw (10.4.0) which is inserted in the side (view in spray direction: right)
with a screwdriver in order to control the duration of the post-spray air as follows:
right turn = longer duration of post-spray air
left turn = shorter duration of post-spray air
Basic setting = screw is flush with basic body; then make one full turn to the
right
3
8
6
7
4
2
5
1

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 10 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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5.4 SMS-05 with Raster Needle Sensor
Optionally, you can use a raster-needle lock with a pre-installed, inductive proximity switch. It will release a
signal when the needle piston with the needle is open. This will help you in digitally monitoring the status
„nozzle open“.
5.4.1 Terminal Assignment for Needle Detection
5.4.2 Terminal Assignment for Solenoid Valve
+
-
Standard plug 24V Valve (left [+] and right [-])
Raster needle sensor

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 11 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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5.5 Installation Diagram for Color Marking Systems
6 Operation
6.1 General Information
This device may only be operated if the safety-related equipment is permanently effective and not suspend-
ed during operation or altered in its intended effectiveness.
6.2 Operation Instructions / Operating Conditions
CAUTION
Never point the jet at people. The wearing of eye protection is strongly recommended. The
spraying process can create noise depending on the air and fluid pressures used. Ear pro-
tection should be worn, if required.
WARNING
Danger caused by flammable, harmful fluid. Always follow the safety instructions on the con-
tainer or the safety data sheet for the fluid.
The SMS-05 Spraying Valve usually works with a control air pressure of 4.5 –6 bar. The atomizing air
pressure must be less than the material pressure, in order to prevent a backflow of the material. Atomizer air
and material pressure have to be closely correlated.
IMPORTANT
In case high material pressures are necessary, the safety regulations of the trade
association must always be observed. Please strictly follow the following instructions when
planning and constructing application systems!
Each spraying valve must be equipped with its own pressure regulator for atomizing air.
In case several spraying valves are supplied by one and the same material pressure tank, these
valves must not spray simultaneously.
The supply route for the material between material pressure tank and spraying valve must not exceed
2 m.
Connection SL
ca. 5-6 bar
Raster needle lock for
adjusting amount of
sprayed medium
Connection M
max. 15 bar
Pressure reducer
0-4 bar
(for setting the material
pressure)
Connection ZL
max. 3.5-4 bar
(for adjusting spray image)

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 12 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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If the pause time is a multiple of the spraying time, the valve must be operated several times in order
to optimize the application process. Alternatively a free-spraying can be performed in a separate posi-
tion.
After standstills of 15 min. and more, the valve must be sprayed free by pressing the switch 3 to 5
times.
The valves can be controlled for intermittent or continuous use. According to the individual application, the
control air must be adjusted to the operating cycles and to the higher or lower material pressures. 50 tacts
per second can be reached under appropriate operating conditions (material pressure, control air pressure,
needle stroke, and short conductions).
IMPORTANT
A plant-specific setting is required for an optimal adjustment of the application pattern. Start-
ing values from laboratory tests can be used as a basis. However, these may need to be
adjusted for the specific plant. A combination of the following parameters is necessary: noz-
zle size, opening time, opening stroke, material pressure and temperature (if applicable).
It is harmless to leave fluid in the valve during longer standstills if system stays under pressure (no
connection to outside air).
6.3 Operating Elements
1
Hand support release at solenoid valve (green head)
2
Regulating button for raster needle setting
3
Throttle screw for flat-jet adjustment
1
2
3

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 13 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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7 Maintenance and Repair
7.1 General Information
The spraying valves of the SMS-05 series are high precision tools. Always keep clean and observe minimum
instructions to maintain a long and useful life of valve. We recommend lubricating moveable parts regularly,
and greasing threads, especially the nozzle threads, when replacing or cleaning the nozzle. It is
recommended to use clean and filtered application fluid only. The control air should also be clean.
Maintenance also depends on the individual operating conditions and the type of media used.
CAUTION
Before starting any maintenance or repair work, ensure that all air-operated tools are
depressurized and disconnected from the air supply.
Before opening the spray valve it must be disconnected from the air and fluid supply.
Otherwise, ejected components can cause injuries.
Particularly when using the spray valve as color-marking unit, the spray cap should be removed before
longer standstills. The spray cap will be cleaned with a cloth and special dilution. Please make sure, that no
cloth fibers remain on the nozzle tip. After that the valve will be sprayed free by using the manual release at
the SPS or manual support release at the 3/2-way valve (green head).
7.2 Cleaning
IMPORTANT
Only use soft brushes for outside cleaning of the nozzle tips. Never use metal tools with
sharp edges.
Wash equipment thoroughly after use to remove residues and dirt, especially if needle (Pos.7.0.0) or sealing
bushing (6.1.0) or material nozzle (Pos.2.1.0) has to be exchanged.
7.3 Replacing the Sealing Screw
Loosen lock (6) and unscrew. (Attention: there is spring pressure in the lock)
Pull out nozzle needle (3) together with air valve (4) from the main body (1).
Use a suitable socket wrench for unscrewing the sealing screw (2) from the main body (1).
Screw in the new sealing screw (2); make sure that the sealing screw is slightly greased with technical
petroleum jelly (Vaseline).
Reassemble spray valve in reverse order.

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 14 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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7.4 Replacing Nozzle and Needle
Loosen retainer ring (1) and remove air cap (2).
Unscrew raster lock (8) and remove. (Caution: there is spring pressure in the lock)
Make sure that the pressure spring (7) does not get lost.
Pull out the nozzle needle (6) together with the air valve (5) and unscrew nozzle (3).
Separate the old nozzle needle (6) from the air valve (5). Make sure that the smaller pressure spring
remains in the air valve.
Slightly grease new nozzle needle (6), connect to air valve and slightly grease; connect to air valve (6)
and insert in main body (4). Then clean needle tip from any grease residues.
Screw in new nozzle (3) into main body (4).
After that re-screw lock (8) onto main body (4).
Screw air cap (2) together with retainer ring (1) onto main body (4).
Perform a functional test of device after replacing nozzles and needles!
IMPORTANT
Nozzle set = Nozzle needle, nozzle and air cap (should always be replaced at the same
time)!
We do not recommend reusing old needles. Even slightly dirty needles can cause leakage of
the O-rings.
7.5 Replacing Sealing Elements (Raster Needle Sensor)
Remove the old sealing elements (1, 2, 3, 4, 6) from the sealing screw (5).
Carefully mount the new sealing elements (1, 2, 3, 4, 6) onto the sealing screw (5) –use technical
petroleum jelly (Vaseline).
Make sure that the sealing screw (5) is coated with technical petroleum jelly (Vaseline) so that the
sealing elements will not be damaged when the sealing screw is mounted in the main body.

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 15 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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The same procedure applies when replacing the sealing elements of the air valve.
IMPORTANT
O-rings and sealings screws are sensitive parts, too, and can be damaged.
Do not use any sharp or pointed metallic implements for inserting the sealings
The sealing screw in particular is a high-precision part with excellent sealing characteristics
which should not be exposed to impulses or pressures.
7.6 Maintenance for Use in Color Marking Systems (Normal Operation)
The spray cap must be cleaned with a cloth and special dilution every other day. Please make sure, that no
cloth fibers remain on the nozzle tip.
Every three months the spraying valve must be cleaned with the special dilution in the material area under
consideration of the steps below:
completely open ratchet needle lock (memorize setting for later use!)
take off air cap and screw out nozzle with an open-end wrench SW 6
IMPORTANT
Hold the spraying valve downwards when doing so, in order that the medium does not flow
into the air ducts. Collect the escaping medium in a container and dispose of it appropriately.
clean with a soft brush and the special dilution
reassemble the nozzle and the air cap after cleaning
readjust the setting of the raster needle
After system standstills (e.g. breaks overnight or on weekends) a cleaning cycle should be provided for,
which will blow the nozzle free. Use the system control to activate the cleaning cycle.
IMPORTANT
In order to avoid soiling, insert a dummy or cloth during the cleaning cycle!
After longer standstills (e.g. 2-3 weeks) the complete system must be cleaned prior to a restart. If
necessary, the material hoses and inlays (if any) of the pressure containers must be exchanged.
Every week the material pressure container must be opened in order to stir the color (if there is no
electric stirrer).
Every 3-4 months the material pressure container must be cleaned and the material hoses and
inlays must be exchanged.

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 16 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
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7.7 Spare Parts
IMPORTANT
Only use original spare parts from the manufacturer!
Wrong or defective spare parts from other manufacturers can damage the device. If other
than original spare parts of the manufacturer will be used, all obligations from the manufac-
turer or his sales partners, such as guarantees, service contracts etc will be forfeited without
further notice.
7.8 Customer Service / Support
Walther Systemtechnik GmbH
Hockenheimer Straße 3
D-76726 Germersheim
Germany
fon ++49(0)7274-7022-0
fax ++49(0)7274-7022-91
Email [e-mail]
Internet www.walther-2000.de
8 Troubleshooting
8.1 General Information
IMPORTANT
First check all supply lines for proper connection and serviceability.
In case of serious problems that cannot be resolved, please contact the Walther Systemtechnik GmbH
customer service.
8.2 Malfunctions:
Fault
Possible Cause
Action
Nozzle needle does
not open
No current supplied (slight click-sound on
solenoid valve)
Check voltage supply
Not enough control pressure available
Check if sufficient control air pressure is
available (5 - 6 bar).
Leakages
Check if O-ring (6.4) is defective
Nozzle needle sticky within sealing screw
(7.0 / 5.0)
Disassemble and clean
Needle stroke set too low
Check if needle stroke is correctly set
No atomizer air
Atomizer air pressure too low
Check is sufficient atomizer air pressure
is available at the spray valve
No material
discharged
Nozzle is clogged by material
Clean nozzle and needle
Material pressure too low
Check is sufficient material pressure is
applied to the spray valve
No sensor signal
with open needle
(needle detection)
Sensor defective; connection interrupted
Check cables / connections; if required,
replace sensor

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 17 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
Telefon: [phone] Telefax: [phone]
http://www.walther-2000.de –[e-mail]
8.3 Spray Image / Type of Defect
SPRAY IMAGE
PROBLEM
CAUSE
ACTION
Normal Spray Image (Flat jet)
Normal Spray Image (Round jet)
Spray image shaped
too much
upwards and
downwards
Spray image shaped
too much
upwards and
downwards
Spray image shaped
too much
upwards and
downwards
Spray image too much
left-sided or right-sided
Spray image too much
left-sided or right-sided
Spray image too much
left-sided or right-sided
Heavy application in the
middle of the spray image
Heavy application in the
middle of the spray
image
Heavy application in the
middle of the spray
image
Split
spray image
Split
spray image
Split
spray image

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 18 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
Telefon: [phone] Telefax: [phone]
http://www.walther-2000.de –[e-mail]
9 Taking out of Service
9.1 Short Interruption
A short interruption (15 min or more) has to be followed by a clean spraying.
IMPORTANT
Please follow the operating instructions!
9.2 Long-term Interruption
The following has to be observed for a long-term interruption of the device/machine:
Depressurize material supply lines
Take off air cap (2.0) and clean nozzle (3.0) with a special thinner and a soft cloth. Make sure that no
cloth fibers are left on the nozzle tip.
IMPORTANT
Please follow the maintenance instructions!
9.3 Shutdown of Device
The following is important for a shutdown of the machine / device:
Clean the spray valve with a special thinner.
IMPORTANT
Please follow the maintenance instructions!

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 19 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
Telefon: [phone] Telefax: [phone]
http://www.walther-2000.de –[e-mail]
10 Appendix
10.1 Dimensioned Drawing SMS-05

Rev. 1.3
Assembly Instructions –Spray Valve SMS-05
Page 20 of 31
Walther Systemtechnik GmbH –D 76726 Germersheim
Telefon: [phone] Telefax: [phone]
http://www.walther-2000.de –[e-mail]
10.1.1Spare Part Drawing SMS-05
IMPORTANT
If the spraying valve is equipped with a nozzle prolongation, the nozzle (3) and the nozzle
needle (7) are special versions.
Therefore, when ordering spare parts the article numbers for the nozzle and the nozzle nee-
dle must be inquired separately. Please do not use the article numbers of the standard ver-
sion!
Nozzle set = Nozzle needle, nozzle and air cap (should always be exchanged at the same
time)