Translation of the Original
Operating Manual
For professional use.
Always follow the information in this manual,
particularly the safety instructions and the warning
instructions. Store the manual in a safe place.
Cobra 40-10 / 2K
High Pressure Double
Diaphragm Pump for
2-Component Products with
Mixing Ratio 1:1
Version 04/2018
B_5076
VERSION 04/2018
OPERATING MANUAL
ORDER NUMBER DOC 2349980
Table of Contents
1 ABOUT THESE INSTRUCTIONS 6
1.1 Preface 6
1.2 Warnings, Notices and Symbols in these Instructions 6
1.3 Languages 7
1.4 Abbreviations 7
1.5 Terminology for the Purpose of this Manual 7
2 CORRECT USE 8
2.1 Device Types 8
2.2 Type of Use 8
2.3 For Use in Potentially Explosive Areas 8
2.4 Processible Working Materials 9
2.5 Misuse 9
3 IDENTIFICATION 10
3.1 Explosion Protection Identication 10
3.2 Identication "X" 10
3.3 Type plate 11
Cobra 40-10 / 2K
4 BASIC SAFETY INSTRUCTIONS 12
4.1 Safety Instructions for the Operator 12
4.1.1 Electrical Devices and Equipment 12
4.1.2 A Safe Work Environment 12
4.1.3 Personnel Qualications 13
4.2 Safety Instructions for the Personnel 13
4.2.1 Personal Safety Equipment 13
4.2.2 Safe Handling of WAGNER Spray Devices 14
4.2.3 Grounding the Unit 14
4.2.4 Product hose 15
4.2.5 Cleaning and Flushing 16
4.2.6 Touching Hot Surfaces 16
4.2.7 Maintenance and Repair 17
4.2.8 Protective and Monitoring Equipment 17
5 DESCRIPTION 18
5.1 Components 18
5.2 Mode of Operation 18
5.2.1 Air motor 18
5.2.2 Fluid section 18
5.3 Protective and monitoring equipment 19
5.4 Included Items 19
5.5 Data 19
5.5.1 Materials of Paint-wetted Parts 19
5.5.2 Technical data 20
5.5.3 Dimensions and Connections 21
5.5.4 Volume Flow 22
5.5.5 Performance diagrams 22
5.6 Pressure Regulator Unit 23
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6 ASSEMBLY AND COMMISSIONING 24
6.1 Training of Assembly/Commissioning Personnel 24
6.2 Storage Conditions 24
6.3 Installation Conditions 24
6.4 Transportation 24
6.5 Assembly and Installation 25
6.5.1 Ventilation of the Spray Booth 26
6.5.2 Air Supply Lines 27
6.5.3 Product supply lines 27
6.6 Grounding 27
6.7 Commissioning 29
7 OPERATION 30
7.1 Training the Operating Personnel 30
7.2 Emergency Stop 30
7.3 Tasks 31
7.4 Pressure Relief/Work Interruption 31
7.5 Basic Flushing 32
7.5.1 Filling with Working Material 33
ORDER NUMBER DOC 2349980
Cobra 40-10 / 2K
8 CLEANING AND MAINTENANCE 34
8.1 Cleaning 34
8.1.1 Cleaning Personnel 34
8.1.2 Decommissioning and Cleaning 34
8.1.3 Long-term Storage 34
8.2 Maintenance 35
8.2.1 Maintenance Personnel 35
8.2.2 Maintenance Instructions 35
8.2.3 Safety Checks and Maintenance Intervals 36
8.2.4 Emptying Pump 38
8.2.5 Filling the Empty Pump 40
8.2.6 Hydraulic Stage Maintenance 41
8.2.7 Checking the Oil Level 42
8.2.8 Oil Change 42
9 TROUBLESHOOTING AND RECTIFICATION 46
10 REPAIR WORK 47
10.1 Repair Personnel 47
10.2 Repair Notes 47
10.3 Tools 47
10.4 Cleaning the Parts After Disassembly 48
10.5 Assembly of the Device 48
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11 FUNCTION TEST AFTER REPAIR WORK 49
12 DISPOSAL 50
13 ACCESSORIES 50
14 SPARE PARTS 52
14.1 How can spare parts be ordered? 52
14.2 Overview of the Components 53
14.3 Air motor 54
14.4 Fluid section 56
14.5 Inlet Valve 59
14.6 Inlet Valve Depressor 59
14.7 Complete Vertical Mixer 60
14.8 Complete Horizontal Mixer 61
14.9 AirCoat Regulator and AirCoat Filter Regulator 62
14.10 Complete Frame 63
14.11 Sliding tables 64
14.12 Horizontal Trolley 65
14.13 Suction system 66
ORDER NUMBER DOC 2349980
Cobra 40-10 / 2K
15 EU DECLARATION OF CONFORMITY 67
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ORDER NUMBER DOC 2349980
1 ABOUT THESE INSTRUCTIONS
1.1 PREFACE
The operating manual contains information about safely operating, maintaining, cleaning
and repairing the device. The operating manual is part of the device and must be available
to the operating and service personnel.
The device may only be operated by trained personnel and in compliance with this
operating manual. Operating and service personnel should be instructed according to the
safety instructions.
This equipment can be dangerous if it is not operated according to the instructions in this
operating manual.
1.2 WARNINGS, NOTICES AND SYMBOLS IN THESE INSTRUCTIONS
Warning instructions in this manual highlight particular dangers to users and to the
device and state measures for avoiding the hazard. These warning instructions fall into the
following categories:
Cobra 40-10 / 2K
DANGER
Immediate risk of danger.
Non-observance will result in death or serious injury.
WARNING
CAUTION
NOTICE
Notice
Explanation of warning notice:
Potential risk.
Non-observance can result in death or serious injury.
Potentially hazardous situation.
Non-observance may result in minor injury.
Potentially hazardous situation.
Non-observance may result in damage to property.
Provides information about particular characteristics and how
to proceed.
LEVEL OF DANGER
This notice warns you of a hazard!
Possible consequences of not observing the warning notice.
The measures for preventing the hazard and its consequences.
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1.3 LANGUAGES
The operating manual is available in the following languages:
Original operating manual
Language Order no.
German 2349649
Translation of the original operating manual
Language Order no.
English 2349980
Italian 2349981
Lithuanian 2373423
Additional languages on request or at: www.wagner-group.com
1.4 ABBREVIATIONS
Order no. Order number Qty Number of pieces
ET Spare part DH Double stroke
K Marking in the spare parts lists SSt Stainless steel
Pos Position 2K Two components
ORDER NUMBER DOC 2349980
Cobra 40-10 / 2K
1.5 TERMINOLOGY FOR THE PURPOSE OF THIS MANUAL
Cleaning
Cleaning Manual cleaning of devices and device parts with cleaning
agent.
Flushing Internal ushing of paint-wetted parts with ushing agent.
Product pressure
generator
Personnel qualications
Trained person Is instructed in the tasks assigned to him/her, the potential risks
Electrically trained
person
Electrician Can assess the work assigned to him/her and detect possible
Skilled person in
accordance with TRBS
1203
(2010/Revision 2012)
Pump or pressure tank.
associated with improper behavior as well as the necessary
protective devices and measures.
Is instructed by an electrician about the tasks assigned to him/
her, the potential risks associated with improper behavior as
well as the necessary protective devices and measures.
hazards based on his/her technical training, knowledge and
experience in relevant provisions.
A person, who, based on his/her technical training, experience
and recent vocational experience, has sucient technical
knowledge in the areas of explosion protection, protection
from pressure hazards and electric hazards (if applicable) and
is familiar with the relevant and generally accepted rules of
technology so that he/she can inspect and assess the status of
devices and coating systems based on workplace safety.
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OPERATING MANUAL
2 CORRECT USE
2.1 DEVICE TYPES
Double diaphragm pump and spray pack:
Cobra 40-10 / 2K
2.2 TYPE OF USE
The device is suitable for processing liquid products like paints and lacquers:
– Non-ignitable products
– Products in accordance with their classication into explosion class IIB (see Chapter
2.4).
WAGNER explicitly prohibits any other use!
The device may only be operated under the following conditions:
Use the device only to work with the products recommended by WAGNER.
Do not deactivate safety xtures.
Use only WAGNER original spare parts and accessories.
The operating personnel must be trained on the basis of this operating manual.
Cobra 40-10 / 2K
2.3 FOR USE IN POTENTIALLY EXPLOSIVE AREAS
The device can be employed in explosion hazard zones (Zone 1) (see Chapter 3).
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2.4 PROCESSIBLE WORKING MATERIALS
Fluid materials like paints and lacquers.
Application Cobra 40-10 / 2K
Water-dilutable products
Solvent-based lacquers and paints
Emulsions
UV lacquers
Primers
Epoxy and polyurethane lacquers, phenolic lacquers
Liquid plastics
Wax-based underside protection
Shear-sensitive lacquers
recommended limited suitability not suitable
NOTICE
Abrasive working materials and pigments!
Greater wear of product-wetted parts.
Use the application-oriented model (ow rate/cycle, product, valves, etc.) as
indicated in Chapter 5.5.
Check if the uids and solvents used are compatible with the pump construction
materials as indicated in Chapter 5.5.1.
Use suitable combinations of devices (packings, valves etc.).
Wear caused by abrasive working materials is not covered by the warranty.
Cobra 40-10 / 2K
Typical applications
Application Cobra 40-10 / 2K
Furniture industry
Kitchen manufacturers
Joinery
Window factories
Steel-processing industry
Construction of vehicles
Shipbuilding
recommended limited suitability not suitable
2.5 MISUSE
Misuse can lead to physical injury and/or property damage!
Special attention must be paid that:
no dry coating products, e.g., powder are processed.
no food, medicine or cosmetics are processed.
It is important to note that the device's materials are not food-safe.
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3 IDENTIFICATION
3.1 EXPLOSION PROTECTION IDENTIFICATION
As dened in the Directive 2014/34/EU (ATEX), the device is suitable for use in potentially
explosive areas.
Device types: Cobra 40-10 / 2K double diaphragm pumps
Manufacturer: Wagner International AG
CH-9450 Altstätten, Switzerland
CE European Communities
Ex Symbol for explosion protection
II Device class II
2 Category 2 (zone 1)
G Ex-atmosphere gas
Ex Explosion protection
h Ignition protection for non-electrical devices
IIB Explosion group
T6 <85 °C
Gb High safety level
X Special notes (see Chapter 3.2)
See the following chapter "Identication X".
Cobra 40-10 / 2K
3.2 IDENTIFICATION "X"
The maximum surface temperature corresponds to the permissible product temperature.
This and the permissible ambient temperature can be found in Chapter 5.5.2 (Technical
Data).
Safe Handling of WAGNER Spray Devices
Mechanical sparks can form if the device comes into contact with metal.
In an explosive atmosphere:
knocking or pushing metal against metal is to be avoided;
do not drop the device.
Maximum surface temperature
The maximum surface temperature of the pump depends on the operating
conditions (heated product) and not on the device (frictional heat).
Ignition temperature of the coating product
Ensure that the ignition temperature of the coating product is above the maximum
surface temperature.
Ambient temperature
The permissible ambient temperature range is: 10 °C to 60 °C; 50 °F to 140 °F.
Medium supporting atomizing
To atomize the product, use only weakly oxidizing gases, e.g., air.
Surface spraying, electrostatics
Do not spray device parts using electrostatic equipment.
Cleaning
If there are deposits on the surfaces, the device may form electrostatic charges. Flames
or sparks can form during discharge.
Remove deposits from the surfaces to maintain conductivity.
Use only a damp cloth to clean the device.
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Air in the pump uid
Ignitable gas mixtures can form if air enters the pump uid.
Prevent the pump from taking in air and running dry.
If air has been taken in, x the leak. Then, ll slowly and in a controlled manner until
the air has escaped.
Air in the pumped uid can be caused by damaged diaphragms.
Avoid operating the pump with damaged diaphragms.
Periodically check that the pump is working smoothly, paying special attention to
the presence of air in the pumped uid.
Filling and emptying
Ignitable gas mixtures can form in the uid section or product hoses if the pump must
be emptied for maintenance and/or repair purposes.
Empty and ll the device slowly and in a controlled manner.
Avoid potentially explosive atmosphere in the surroundings.
3.3 TYPE PLATE
Cobra 40-10 / 2K
ORDER NUMBER DOC 2349980
Cobra 40-10 / 2K
Wagner International AG
CH-9450 Altstätten
Made in Switzerland
1
Pumpentyp/ Pump type/ Type de pompe
2
Max. Materialdruck/ Fluid pressure/ Pression fluid
3
Übersetzungsverhältnis/ Ratio/ Rapport
4
Fördermenge DH/ Delivery DS/ Débit CD
5
Max. Luftdruck/ Air pressure/ Pression d`air
6
Max. Temp. Material/ Fluid
7
Baujahr - Serie Nr. / Year of manufacture - Serial No.
8
Vor Gebrauch Betriebsanleitung beachten / Check manual before use!
B_06984
II 2G Ex h IIB T6 Gb X
Designation
1 Pump type
2 Max. product pressure
3 Pump ratio
4 Flow rate
5 Max. air pressure
6 Max. temp. product/uid
7 Model year - serial number
8 Check manual before use!
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OPERATING MANUAL
4 BASIC SAFETY INSTRUCTIONS
4.1 SAFETY INSTRUCTIONS FOR THE OPERATOR
Keep this operating manual at hand near the device at all times.
Always follow local regulations concerning occupational safety and accident
prevention.
4.1.1 ELECTRICAL DEVICES AND EQUIPMENT
Electric shock hazard!
Danger to life from electric shock
Prepare device in accordance with the local safety requirements with regard to the
operating mode and ambient inuences.
May only be maintained by skilled electricians or under their supervision. With open
housings, the mains voltage poses a danger.
Operate device in accordance with the safety regulations and electrotechnical
regulations.
Must be repaired immediately in the event of problems.
Decommission if it poses a hazard or is damaged.
Must be de-energized before work is commenced. Inform personnel about planned
work. Observe electrical safety regulations.
Ground all devices to a common grounding point.
Only operate the device with a properly installed socket with a protective ground
wire connection.
Keep liquids away from electrical devices.
Cobra 40-10 / 2K
4.1.2 A SAFE WORK ENVIRONMENT
Hazard due to dangerous uids or vapors!
Severe or fatal injuries due to explosion hazard or inhalation, swallowing or contact with
the skin or eyes.
Ensure that the oor in the working area is static dissipative in accordance with
EN61340-4-1 (resistance must not exceed 100 M).
Paint mist extraction systems/ventilation systems must be tted on site according
to local regulations.
Make sure that the ground connection and potential equalization of all system parts
are reliable and continuous and can withstand the expected stress (e.g. mechanical
stress, corrosion).
Ensure that product hoses / air hoses adapted to the working pressure are used.
Ensure that personal protective equipment (see Chapter 4.2.1) is available and is
used.
Ensure that all persons within the working area wear static dissipative shoes.
Footwear must comply with EN 20344. The measured insulation resistance must not
exceed 100 M.
Ensure that during spraying, persons wear electrically conductive gloves. The
grounding takes place via the spray gun handle or the trigger.
Protective clothing, including gloves, must comply with EN 1149-5. The measured
insulation resistance must not exceed 100 M.
Ensure that there are no ignition sources such as naked ames, sparks, glowing
wires, or hot surfaces in the vicinity. No smoking.
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Ensure that the pipe joints, hoses, equipment parts and connections are
permanently, technically leak-proof:
- Periodic preventative maintenance and service (replacing hoses, checking
tightness strength of the connections etc.).
- Regular monitoring of leaks and defects via visual inspection and odor testing,
e.g., daily before commissioning, at the end of work or weekly.
Ensure that maintenance and safety checks are performed regularly.
In the event of defects, immediately bring the device or system to a stop and
arrange to have repairs carried out immediately.
4.1.3 PERSONNEL QUALIFICATIONS
Hazard due to incorrect use of device!
Risk of death due to untrained personnel.
Ensure that the operating personnel has been instructed by the operator in
accordance with the operating manual and the operating instructions. The device
must only be operated, maintained and repaired by trained personnel. Refer to the
operating instructions for information about the required personnel qualications.
Cobra 40-10 / 2K
4.2 SAFETY INSTRUCTIONS FOR THE PERSONNEL
Always follow the information in this manual, particularly the safety instructions and
the warning instructions.
Always follow local regulations concerning occupational safety and accident
prevention.
In electrostatics applications: anyone who belongs to a risk group according to EMF
Directive 2013/35/EU (e.g. those with active implants), must not enter the highvoltage area.
4.2.1 PERSONAL SAFETY EQUIPMENT
Hazard due to dangerous uids or vapors!
Serious or fatal injuries due to inhalation, swallowing or contact with the skin or eyes.
When preparing or working with lacquer and when cleaning the device, follow the
working instructions of the manufacturer of the lacquers, solvents, and cleaning
agents being used.
Take the specied protective measures. In particular wear safety goggles, protective
clothing and gloves, as well as hand protection cream if necessary.
Use a mask or breathing apparatus if necessary.
For sucient health and environmental safety: Operate the device in a spray booth
or on a spraying wall with the ventilation (extraction) switched on.
Wear suitable protective clothing when working with hot products.
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4.2.2 SAFE HANDLING OF WAGNER SPRAY DEVICES
Hazard due to injection of lacquer or ushing agent into the skin!
The spray jet is under pressure and can cause dangerous injuries. Avoid injection of
lacquer or ushing agents:
Never point the spray gun at people.
Never reach into the spray jet.
Before any work on the device, in the event of work interruptions and malfunctions:
– Switch o the energy/compressed air supply.
– Relieve the pressure from the spray gun and device.
– Secure the spray gun against actuation.
− Disconnect the control unit from the mains.
– In the event of functional faults, remedy the fault as described in the
"Troubleshooting" chapter.
If necessary or at least every 12 months, the liquid ejection devices must be
checked for safe working conditions by an expert (e.g. WAGNER Service Technician)
in accordance with the guidelines for liquid ejection devices (ZH 1/406 and DGUV
100-500 Chapters 2.29 and 2.36).
− For shut-down devices, the check can be postponed until the next start-up.
In the event of skin injuries caused by lacquer or ushing agents:
Note the lacquer or ushing agent that you have been using.
Consult a doctor immediately.
Danger due to recoil forces!
Actuating the trigger can causes strong recoil forces. Thereby, the user can lose his
balance and injure himself when falling.
Avoid risk of injury from recoil forces:
Ensure that you have firm footing when operating the spray gun.
Cobra 40-10 / 2K
4.2.3 GROUNDING THE UNIT
Hazard due to electrostatic charge!
Explosion hazard and damage to the device.
Friction, owing liquids and air or electrostatic coating processes create charges. Flames
or sparks can form during discharge.
Correct grounding of the entire spraying system prevents electrostatic charges.
Ensure that all devices and tanks are grounded before each spraying process.
Ground the work pieces to be coated.
Ensure that all persons inside the working area are grounded, e.g., that they are
wearing static dissipative shoes.
Wear static dissipative gloves when spraying. The grounding takes place via the
spray gun handle or the trigger.
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4.2.4 PRODUCT HOSE
Hazard due to bursting of product hose!
The product hose is under pressure and may cause dangerous injuries.
Ensure that the hose material is chemically resistant to the sprayed products and
the ushing agents used.
Ensure that the product hose and the ttings are suitable for the pressure
generated.
Ensure that the following information can be seen on the high-pressure hose:
− manufacturer
− permissible operating pressure
− date of manufacture
Make sure that the hoses are laid only in suitable places. Hoses should not be laid in
the following places under any circumstances:
− in high-traffic areas
− on sharp edges
− on moving parts
− on hot surfaces
Ensure that the hoses are never run over by vehicles (e.g., fork lift trucks), or that the
hoses are never put under pressure from the outside in any other way.
Ensure that the hoses are never kinked. Observe maximum bending radii.
Ensure that no work is ever performed with a damaged hose.
Make sure that the hoses are never used to pull or move the equipment.
The electrical resistance of the product hose, measured at both valves, must be less
than 1 M.
Suction hoses may not be subjected to pressure.
Several liquids have a high expansion coecient. In some cases, their volume can rise with
consequent damage to pipes, ttings, etc. and cause uid leakage.
When the pump sucks liquid from a closed tank, ensure that air or a suitable gas can
enter the tank. Thus a negative pressure is avoided. The vacuum could implode the tank
(squeeze) and can cause it to break. The tank would leak and the liquid would ow out.
The pressure created by the pump is a multiplication of the inlet air pressure.
ORDER NUMBER DOC 2349980
Cobra 40-10 / 2K
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4.2.5 CLEANING AND FLUSHING
Hazard due to cleaning and ushing!
Explosion hazard and damage to the device.
Preference should be given to non-ignitable cleaning and ushing agents.
When carrying out cleaning work with ammable cleaning agents, make sure
that all equipment and resources (e.g., collection tank, funnel, transport cart) are
conductive or static dissipative and grounded.
Observe the specications of the lacquer manufacturer.
Ensure that the ash point of the cleaning agent is at least 15 K above the ambient
temperature or that cleaning is undertaken at a cleaning station with technical
ventilation.
Never use chloride or halogenated solvents (such as trichloroethane and methylene
chloride) with units containing aluminium or galvanized and zinc-plated parts. They
may react chemically thus producing an explosion danger.
Take measures for workplace safety (see Chapter 4.1.2).
When commissioning or emptying the device, please note that:
−depending upon the coating product used,
−depending on the ushing agent (solvent) used.
an explosive mixture may temporarily exist inside the lines and components of
equipment.
Only electrically conductive tanks may be used for cleaning and ushing agents.
The tanks must be grounded.
An explosive gas/air mixture forms in closed tanks.
Never spray into a closed tank when using solvents for ushing.
External Cleaning
When cleaning the exterior of the device or its parts, also observe the following:
Relieve the pressure from the device.
De-energize the device electrically.
Disconnect the pneumatic supply line.
Use only moistened cloths and brushes. Never use abrasive agents or hard objects,
and never spray cleaning agents with a spray gun. Cleaning the device must not
damage it in any way.
Ensure that no electric component is cleaned with or immersed into solvent.
Cobra 40-10 / 2K
4.2.6 TOUCHING HOT SURFACES
Hazard due to hot surfaces because of hot coating products!
Risk of burn injuries
Only touch hot surfaces if you are wearing protective gloves.
When operating the device with a coating product with a temperature of > 43 °C;
109 °F:
– Identify the device with a warning label "Warning – hot surface".
Part no.
9998910 instruction label
9998911 protection label
Note: Order the two stickers together.
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4.2.7 MAINTENANCE AND REPAIR
Hazard due to improper maintenance and repair!
Danger to life and equipment damage.
Only a WAGNER service center or a suitably trained person may carry out repairs and
replace parts.
Use only WAGNER original spare parts and accessories.
Do not change or modify the device; if change is necessary, contact WAGNER.
Only repair and replace parts that are listed in Chapter 13 and Chapter 14 that are
assigned to the unit.
Do not use any defective components.
Exclusively use accessories listed in Chapter 13 and that are assigned to the unit.
Before all work on the device and in the event of work interruptions:
- Relieve the pressure from the spray gun, high-pressure hoses and all devices.
- Secure the spray gun against actuation.
- Switch o the energy and compressed air supply.
- Disconnect the control unit from the mains. Secure the spray gun against
actuation.
Observe the operating and service manual for all work.
Cobra 40-10 / 2K
4.2.8 PROTECTIVE AND MONITORING EQUIPMENT
Hazard due to removal of protective and monitoring equipment!
Danger to life and equipment damage.
Protective and monitoring equipment must not be removed, modied or rendered
unusable.
Regularly check for perfect functioning.
If defects are detected on protective and monitoring equipment, the system must
not be operated until these defects are remedied.
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5 DESCRIPTION
5.1 COMPONENTS
ORDER NUMBER DOC 2349980
Cobra 40-10 / 2K
Cobra 40-10/2K
7
5
13
11
B_05078
12
14
1
4
10 (A)
10 (B)
Designation
1 Control housing with integrated silencer
2 Air pressure regulator
3 Ball valve
4 Air motor
5 Compressed air inlet
6 Fastening ange
7 AirCoat pressure regulator (option)
8 Product outlet (A, B)
9 Fluid section
8 (A)
8 (B)
2
6
3
15 (A)
A
9
A
B
A
B
B
A + B
16
15 (B)
17
18
Designation
10 Suction system product inlet (A, B)
11 Grounding connection
12 Fluid section casing
13 Valve depressor (A, B)
14 Exhaust air opening
15 Relief valve (A, B)
16 Mixing block holder
17 Mixing block
18 Mixing tube
5.2 MODE OF OPERATION
The double diaphragm pump is driven with compressed air. This compressed air moves
the air piston in the air motor (4), and consequently the piston rod in the uid section (9),
up and down. At the end of each stroke, the compressed air is redirected by a reversing
valve and the control piston. The up-and-down movement of both diaphragms in the uid
section is produced by hydraulic oil, which is moved by the piston rod in the uid section.
With every stroke of the piston rod, working product is sucked in and delivered to the spray
gun at the same time.
5.2.1 AIR MOTOR
The air motor (4) with its pneumatic reverse (1) does not require pneumatic oil. The
compressed air is fed to the motor via the air pressure regulator (2) and the ball valve (3).
5.2.2 FLUID SECTION
The uid section (9) has been designed as a double diaphragm pump with exchangeable
inlet and outlet valves. With the mixing block (17), upstream relief valves (15) can be switched
from "Spraying mode" to "Product circulation mode".
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5.3 PROTECTIVE AND MONITORING EQUIPMENT
WARNING
Overpressure!
Danger to life from bursting device components.
Never change the safety valve setting.
The air motor is tted with a safety valve. The safety valve has been set and sealed at the
factory. In case of pressures over and above the permissible operating pressure, the valve,
which is held with a spring, automatically opens and releases the excess pressure.
5.4 INCLUDED ITEMS
Order no. Designation
Cobra 40-10/2K double diaphragm pump comprising:
1 U850.00CA
1 U850.00MA
1 U850.00SA
The standard equipment includes:
Order no. Designation
1 322981 Sign
1 236219 Grounding cable, complete
1 341434 Double open-end wrench
1 see Chapter 15 Declaration of Conformity
1 2349649 Operating manual, in German
1 see Chapter 1.3 Operating manual in the local language
The delivery note shows the exact scope of delivery. Accessories: see Chapter 13.
uid section, air motor and connection elements mounted on
trolley (vertical).
Cobra 40-10/2K double diaphragm pump comprising:
uid section, air motor, connection elements and mounting
brackets for wall mounting (vertical).
Cobra 40-10/2K double diaphragm pump comprising:
uid section, air motor, connection elements and mounted on
a special frame (horizontal).
ORDER NUMBER DOC 2349980
Cobra 40-10 / 2K
5.5 DATA
5.5.1 MATERIALS OF PAINTWETTED PARTS
Paint-wetted parts Product
Inlet housing Consital (aluminum alloy)
Fluid section Consital (aluminum alloy)
Valve balls Stainless steel
Valve seats/valve cone Carbide
Diaphragm PA-resistant
Valve tting 1.4104
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OPERATING MANUAL
5.5.2 TECHNICAL DATA
Description Units Cobra 40-10 / 2K
Pump ratio 40:1
Volume ow per double stroke (DH) cm
Maximum operating overpressure MPa
Maximum possible strokes in operation DH/min 200
Minimum/maximum air inlet pressure MPa
Compressed air quality: free from oil and water
Air inlet (inside thread) inch G 1/2"
Minimum Ø of the compressed air supply line mm
Air consumption at 0.6 MPa; 6 bar; 87 psi per double stroke NL 3.5
Sound pressure level at maximum permissible air pressure* dB(A) 74
Sound pressure level at 0.45 MPa; 4.5 bar; 65.27 psi air
pressure*
Sound pressure level at 0.3 MPa; 3 bar; 43.5 psi air pressure* dB(A) 69
Air motor piston diameter mm
Product inlet (outside thread)
Product outlet (inside thread)
Product outlet (outside thread)
Weight kg; lb 19; 41.9
Product pH value pH 3.5–9
Maximum product pressure at pump inlet MPa
Product temperature °C
Ambient temperature °C
Allowable inclination for operation ±10
Hydraulic oil lling amount (approximate) L
*A-rated sound pressure level measured at 1 m distance, LpA1m, according to DIN EN 14462: 2015.
Reference measurements have been made by SUVA (Swiss Accident Insurance Institute).
ORDER NUMBER DOC 2349980
cu inch
Quality standard 7.5.4 according to ISO 8573.1, 2010
7: Particle concentration 5–10mg/m³
5: Humidity: pressure dew point ≤ 7 °C
4: Oil content ≤ 5mg/m3
cu inch
10
0.6
25
bar
psi
bar
psi
inch
dB(A) 72
inch
mm
inch
inch
bar
psi
°F
°F
250
3626
0.25–0.6
2.5–6
36.3–87
13
0.51
80
3.15
M36×2
G 3/8"
G 3/8"
20
290
10–80
50–176
10–60
50–140
0.110
6.71
2
Cobra 40-10 / 2K
WARNING
Exhaust air containing oil!
Risk of poisoning if inhaled.
Provide compressed air free from oil and water.
20
VERSION 04/2018
ORDER NUMBER DOC 2349980
OPERATING MANUAL
5.5.3 DIMENSIONS AND CONNECTIONS
Cobra 40-10 / 2K
mm; inch
A 505; 19.88
B 313; 12.32
C 313; 12.32
D 134; 5.28
E 55; 2.16
F 182; 7.16
G 80; 3.15
H M6
I
25; 0.98
K G3/8
L M36×2
E
mm; inch
M G3/8
N 149; 5.87
G
N
F
O 91; 3.58
P 107; 4.21
Q 175; 6.89
R
S 65; 2.56
T 725
7; 0.28
O
P
U 318
V 262
-- --
B
D
Cobra 40-10/2K
R
Q
G
B_03111
K
T
C
F
A
S
I
H
M
L
V
B_06991
U
21
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