WAGNER Cobra 40-10 User manual

II 2G IIB c X
Cobra 40-10
Cobra 40-25
"?
B_02999
High pressure
Double diaphragm pump
Edition 01/ 2012
Translation of the original
Operating manual

3
Cobra.
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
Contents
1 ABOUT THESE INSTRUCTIONS 5
1.1 Languages 5
1.2 Warnings, notes and symbols in these instructions 5
2 GENERAL SAFETY INSTRUCTIONS 6
2.1 Safety instructions for the operator 6
2.1.1 Electrical equipment 6
2.1.2 Personnel qualifications 6
2.1.3 A safe work environment 6
2.2 Safety instructions for personnel 6
2.2.1 Safe handling of WAGNER spray units 7
2.2.2 Earth the unit 7
2.2.3 Material hoses 7
2.2.4 Cleaning 8
2.2.5 Handling hazardous liquids, varnishes and paints 8
2.2.6 Touching hot surfaces 8
2.3 Correct use 8
2.4 Use in an explosion hazard area 9
2.4.1 Correct use 9
2.4.2 Explosion protection identification 9
2.4.3 Identification mark ‘X’ 9
3 GUARANTEE AND CONFORMITY DECLARATIONS 10
3.1 Important notes on product liability 10
3.2 Guarantee claim 10
3.3 CE-conformity 11
4 DESCRIPTION 12
4.1 Field of application 12
4.1.1 Using in accordance with the instructions 12
4.1.2 Suitable spray materials 12
4.2 Scope of supply 13
4.3 Data 13
4.3.1 Materials of paint wetted parts 13
4.3.2 Technical data 13
4.3.4 Dimensions and connections 15
4.3.4 Volume flow 16
4.3.5 Performance diagrams 16
4.4 Functions 18
4.4.1 Pump 18
4.4.2 Pressure regulator unit Cobra 40-10 20
4.4.3 Pressure regulator unit Cobra 40-25 20
4.4.4 High pressure filter (Option) 21
5 STARTING UP AND OPERATION 22
5.1 Set up and connect 22
5.1.1 Set up the pump 22
5.1.2 Earthing 23

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Cobra.
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
Contents
5.2 Starting up 25
5.2.1 Safety notes 25
5.2.2 Basic cleaning 28
5.2.3 Filling with working material 29
5.3 Working 29
5.3.1 Spraying 29
5.3.2 Working break 29
5.3.3 Shutting down and cleaning 30
5.4 Long-term storage 30
6 TROUBLESHOOTING AND MAINTENANCE 31
6.1 Eliminating faults 31
6.2 Maintenance 32
6.3 Maintenance hydraulic stage 33
6.3.1 Check oil level 33
6.3.2 Oil change 34
7 ACCESSORIES 37
7.1 Cobra 40-10 Accessories 37
7.2 Cobra 40-25 Accessories 40
8 SPARE PARTS 43
8.1 How to order spare parts? 43
8.2 Cobra 40-10 - Overview modules 44
8.3 Cobra 40-10 Air motor 45
8.4 Cobra 40-10 material Pump 48
8.5 Cobra 40-25 - Overview modules 52
8.6 Cobra 40-25 Air motor 53
8.7 Cobra 40-25 material Pump 56
8.8 Cobra 40-25 Inlet housing assy. 60
8.9 Cobra 40-25 Inlet valve 60
8.10 Cobra 40-10 inlet valve 61
8.11 Inlet valve pusher 61
8.12 Relief valve 62
8.13 Cobra 40-10 Base frame assy 63
8.14 Cobra 40-25 Base frame assy. 63
8.15 Trolley 64
8.16 Cobra 40-10 and 40-25 Suction system 66
8.17 Upper hopper assy. 66
8.18 Cobra 40-10 High pressure filter 67
8.19 Cobra 40-25 High pressure filter 68

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Cobra.
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
1 ABOUT THESE INSTRUCTIONS
1.1 LANGUAGES
1.2 WARNINGS, NOTES AND SYMBOLS IN THESE INSTRUCTIONS
4HISOPERATINGMANUALCONTAINSINFORMATIONABOUTTHEOPERATIONREPAIRANDMAINTENANCE
OFTHEUNIT
 !LWAYSFOLLOWTHESEINSTRUCTIONSWHENOPERATINGTHEUNIT
4HISOPERATINGMANUALISAVAILABLEINTHEFOLLOWINGLANGUAGES
,ANGUAGE 0ART.O ,ANGUAGE 0ART.O
'ERMAN  %NGLISH
&RENCH  $UTCH
)TALIAN  3PANISH
$ANISH  3WEDISH
0ORTUGUESE  4URKISH
2USSIAN  (UNGARIAN
Warning instructions in this manual point out particular dangers to users and equipment
and state measures for avoiding the hazard.
These warning instructions fall into the following categories:
Danger - imminent danger. Non-observance will result
in death, serious injury and serious material damage.
Warning - possible danger. Non-observance can result
in death, serious injury and serious material damage.
Caution - a possibly hazardous situation.
Non-observance can result in minor injury.
Note - provide information on particular characteristics and how to proceed.
Caution - a possibly hazardous situation.
Non-observance can cause material damage. 6/23)#(4
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WEIST3IEAUFDIE'EFAHRENSTUFEHIN
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3)()??$
SIHI_0101_GB
CAUTION
This line warns of the hazard!
Possible consequences of failing to observe the warning instructions.
The signal word points out the hazard level.
The measures for preventing the hazard and its consequences.
SIHI_0103_GB
WARNING
This line warns of the hazard!
Possible consequences of failing to observe the warning instructions.
The signal word points out the hazard level.
The measures for preventing the hazard and its consequences.
SIHI_0100_GB
DANGER
This line warns of the hazard!
Possible consequences of failing to observe the warning instructions.
The signal word points out the hazard level.
The measures for preventing the hazard and its consequences.
322850 322851
322852 322853
322854 322855
322857 322856
322858 --
2327863 --

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Cobra.
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
2.1 SAFETY INSTRUCTIONS FOR THE OPERATOR
2.1.1 ELECTRICAL EQUIPMENT
2.1.2 PERSONNEL QUALIFICATIONS
2.1.3 A SAFE WORK ENVIRONMENT
2.2 SAFETY INSTRUCTIONS FOR PERSONNEL
2 GENERAL SAFETY INSTRUCTIONS
Keep these operating instructions to hand near the unit at all times.
Always follow local regulations concerning occupational safety and accident prevention.
Electrical plant and unit
To be provided in accordance with the local safety requirements with regard to the
operating mode and ambient influences.
May only be maintained by skilled electricians or under their supervision.
Must be operated in accordance with the safety regulations and electrotechnical
regulations.
Must be repaired immediately in the event of problems.
Must be put out of operation if they pose a hazard.
Must be de-energized before work is commenced on active parts. Inform staff about
planned work, observe electrical safety regulations.
 %NSURETHATTHEUNITISOPERATEDANDREPAIREDONLYBYTRAINEDPERSONS
Make sure that the floor in the area where you are working is derivable in accordance
with EN 61340-4-1.
Ensure that all persons within the working area wear derivable shoes.
Ensure that during spraying, persons wear derivable gloves so that they are earthed via
the handle of the spray gun.
Customer to provide paint mist extraction units conforming to local regulations.
Ensure that the following components of a safe working environment are available:
– Material/air hoses adapted to the working pressure
– Personal safety equipment (breathing and skin protection)
Ensure that there are no ignition sources such as naked flame, glowing wires or hot
surfaces in the vicinity. Do not smoke.
Always follow the information in these instructions, particularly the general safety
instructions and the warning instructions.
Always follow local regulations concerning occupational safety and accident
prevention.

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OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
2.2.2 EARTH THE UNIT
2.2.3 MATERIAL HOSES
2.2.1 SAFE HANDLING OF WAGNER SPRAY UNITS
The spray jet is under pressure and can cause dangerous injuries.
Avoid injection of paint or cleaning agents:
 Never point the spray gun at people.
 Never reach into the spray jet.
 Before all work on the unit, in the event of work interruptions and functional faults:
– Switch off the energy/compressed air supply.
– Secure the spray gun against actuation.
– Relieve the pressure from the spray gun and unit.
– By functional faults: Identify and correct the problem, proceed as described in
chapter „Trouble shooting“.
In the event of skin injuries caused by paint or cleaning agents:
Note down the paint or cleaning agent that you have been using.
Consult a doctor immediately.
Avoid danger of injury through recoil forces:
Ensure that you have a firm footing when operating the spray gun.
Only hold the spray gun briefly in any one position.
Depending on the electrostatic charge and the flow speed of the spray, an electrostatic
charge may occur in the equipment.This could cause a spark or flame on discharging.
Ensure that the unit is earthed for every spraying operation.
Earth the work pieces being painted.
Ensure that all persons inside the working area are earthed, e.g. that they are wearing
derivable shoes.
When spraying, wear derivable gloves to earth yourself via the spray gun handle.
 Ensure that the hose material is chemically resistant to the sprayed materials.
 Ensure that the material hose is suitable for the pressure generated in the unit.
 Ensure that the following information is visible on the high pressure hose:
– Manufacturer
– Permissible operating overpressure
– Date of manufacture.
 The electrical resistance of the complete high pressure hose must be less than 1 MOhm.

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OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
2.2.4 CLEANING
2.2.5 HANDLING HAZARDOUS LIQUIDS,VARNISHES AND PAINTS
2.2.6 TOUCHING HOT SURFACES
2.3 CORRECT USE
De-energize the unit electrically.
Disconnect the pneumatic supply line.
Relieve the pressure from the unit.
Ensure that the flash point of the cleaning agent is at least 5 K above the ambient
temperature.
To clean, use only solvent-free cloths and brushes. Never use hard objects or spray on
cleaning agents with a gun.
An explosive gas/air mixture forms in closed containers.
When cleaning units with solvents, never spray into a closed container.
Earth the container.
When preparing or working with paint and when cleaning the unit, follow the working
instructions of the manufacturer of the paints, solvents and cleaning agents being
used.
Take the specified 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 sufficient health and environmental safety: Operate the unit in a spray booth or on
a spraying wall with the ventilation (extraction) switched on.
Wear suitable protective clothing when working with hot materials.
➞ Touch hot surfaces only if you are wearing protective gloves.
➞ When operating the unit with a coating material with a temperature of > 43 °C; 109.4 °F:
- Identify the unit with a warning label that says„Warning - hot surface“.
Order No.
9998910 Information label
9998911 Safety label
7!'.%2ACCEPTSNOLIABILITYFORANYDAMAGEARISINGFROMINCORRECTUSE
 5SETHEUNITONLYTOWORKWITHTHEMATERIALSRECOMMENDEDBY7!'.%2
 /PERATETHEUNITONLYASANENTIREUNIT
 $ONOTDEACTIVATESAFETYEQUIPMENT
 5SEONLY7!'.%2ORIGINALSPAREPARTSANDACCESSORIES

9
Cobra.
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
2.4 USE IN AN EXPLOSION HAZARD AREA
2.4.1 CORRECT USE
2.4.2 EXPLOSION PROTECTION IDENTIFICATION
2.4.3 IDENTIFICATION MARK ‘X’
4HEUNITISSUITABLEFORWORKINGLIQUIDMATERIALSINACCORDANCEWITHTHECLASSIlCATIONINTO
EXPLOSIONCLASSES
As defined in the Directive 94/9/EC (ATEX 95), the unit is suitable for use in areas where
there is an explosion hazard.
II 2G IIB c X
CE: Communautés Européennes
Ex: Symbol for explosion protection
II: Unit class II
2: Category 2 (Zone 1)
G: Ex-atmosphere gas
IIB: Explosion class
c: Constructional security
X: Special notes (see chap.2.4.3).
Cleaning
If there are deposits on the surfaces, the unit may form electrostatic charges. Flames or
sparks can form if there is a discharge.
Remove deposits from the surfaces to maintain conductivity.
Use only a damp cloth to clean the unit.
Max. surface temperature
 The maximum surface temperature of the pump hangs not of the equipment (frictional
heat) separates from the opening conditions (warmed material).
Ignition temperature of coating material
 Ensure that the ignition temperature of the coating material is above the maximum
surface temperature.
Ambient temperature
 The permissible ambient temperature is +10 °C to +60 °C; +50 °F to +140 °F
Medium supporting atomizing
 To atomize the material, use only weakly oxidizing gases, e.g.air.
Mechanical sparks can form if the unit comes into contact with metal.
In an explosive atmosphere:
Do not knock or push the unit against steel or rusty iron.
Do not drop the unit.
Use only tools that are made of a permitted material.
Surface spraying, electrostatic
Do not spray system parts with electrostatic (e.g. electrostatic spray gun).
X: The maximum surface temperature corresponds to the permissible material temperature.
This and the permissible ambient temperature can be found in the Technical Data.

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Cobra.
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
3 GUARANTEE AND CONFORMITY DECLARATIONS
3.1 IMPORTANT NOTES ON PRODUCT LIABILITY
3.2 GUARANTEE CLAIM
As a result of an EC regulation, effective as from January 1, 1990, the manufacturer shall
only be liable for his product if all parts come from him or are approved by him, and if the
devices are properly fitted , operated and maintained.
If other makes of accessory and spare parts are used, the manufacturer‘s liability could be
fully or partially null and void.
The usage of original WAGNER accessories and spare parts guarantees that all safety
regulations are observed.
Full guarantee is provided for this device:
We will at our discretion repair or replace free of charge all parts which within 24 months
in single-shift, 12 months in 2-shift or 6 months in 3-shift operation from date of receipt by
the Purchaser are found to be wholly or substantially unusable due to causes prior to the
sale, in particular faulty design, defective materials or poor workmanship.
The type of guarantee provided is such that the device or individual components of the
device are either replaced or repaired as we think fit. The resulting costs, in particular
shipping charges, road tolls, labour and material costs will be borne by us except where
these costs are increased due to the subsequent shipment of the unit to a location other
than the address of the purchaser.
We do not provide guarantee for damage that has been caused or contributed to for the
following reasons:
Unsuitable or improper use, faulty installation or commissioning by the purchaser or a
third party, normal wear, negligent handling, defective maintenance, unsuitable coating
products, substitute materials and the action of chemical, electro chemical or electrical
agents, except when the damage is attributable to us.
Abrasive coating products such as red lead, emulsions, glazes, liquid abrasives, zinc dust
paints and similar reduce the service life of valves, packings, spray guns, tips, cylinders,
pistons etc. Signs of wear and tear due to such causes are not covered by this guarantee.
Components that have not been manufactured by WAGNER are subject to the original
guarantee of the manufacturer.
Replacement of a component does not extend the period of guarantee of the device.
The unit should be inspected immediately upon receipt. To avoid losing the guarantee, we
or the supplier company are to be informed in writing about obvious faults within 14 days
upon receipt of the device.
We reserve the right to have the guarantee compliance met by a contracting company.
The services provided by this guarantee depend on evidence being provided in the form
of an invoice or delivery note. If an examination discovers that no guarantee claim exists,
the costs of repairs are charged to the purchaser.
It is clearly stipulated that this guarantee claim does not represent any constraint to statutory
regulations or regulations agreed contractually in our general terms and conditions.
J. Wagner AG

11
Cobra.
II 2G IIB c X
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
CE Certificate of Conformity
The certificate is enclosed with this product. The certificate of conformity can be reordered
from your WAGNER representative, quoting the product and serial number.
Part number:
3.3 CE-CONFORMITY
2302350
Herewith we declare that the supplied version of membrane pumps and Spraypacks
Cobra 40-10
Cobra 40-25
Complies with the following guidelines:
2006/42/EEC
94/9/EEC (Atex-directives)
Applied standards, in particular:
DIN EN ISO 12100-1: 2004 DIN EN 809: 2011 DIN EN 12621/A1: 2010
DIN EN ISO 12100-/A1: 2009 DIN EN 14462: 2005 DIN EN 13463-1: 2009
DIN EN ISO 12100-2: 2004 DIN EN ISO 14121-1: 2007 DIN EN 13463-5: 2004
DIN EN ISO 12100-2/A1: 2009 DIN EN 1127-1: 2008
DIN EN ISO 13732-1: 2008 DIN EN 12621: 2006
Applied national technical standards and specifications, in particular:
BGR 500 Part 2 chap. 2.29 and chap. 2.36 BGR 104 TRBS 2153
Marking:

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Cobra.
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
4 DESCRIPTION
4.1 FIELD OF APPLICATION
4.1.2 SUITABLE SPRAY MATERIALS
4.1.1 USING IN ACCORDANCE WITH THE INSTRUCTIONS
The pneumatic piston pump is suitable for process liquid materials according
chapter 4.1.2.
CAUTION
Abrasive materials and pigments!
Greater wear of the parts carrying the material
Do not use any grainy and abrasive materials with large, sharp-edged pigments.
Use suitable combinations of devices (packages, valves etc.).
SIHI_0011_GB
Application Cobra 40-10 Cobra 40-25
Water based lacquers and paints ➚➚
Solvent based lacquers and paints ➚➚
Two-components coating materials ➚➚
Dispersions ➚➚
UV-paints ➚➚
Primers ➙➚
Epoxy and polyurethane paints and lacquers ➚➚
Synthetic materials ➙➙
Wax based under seal ➚➚
Shear sensitive paints ➚➚
Legend
Recommended ➚ limited suitability ➙ less suitable ➘
Application Cobra 40-10 Cobra 40-25
Furniture industry ➚➚
Kitchen manufacturers ➚➚
Joinery ➚➚
Window factories ➙➚
Steel fabrication ➙➙
Construction of vehicles ➚➚
Offshore ➘➘
Legend
Recommended ➚ limited suitability ➙ less suitable ➘

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Cobra.
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
4.3 DATA
4.3.1 MATERIALS OF PAINT WETTED PARTS
Inlet housing Consital®
Material pump Consital®
Valve balls Stainless steel
Valves seats/ cone valve Tungsten carbide
Diaphragm PA consistent
Valve fitting 1.4104
4.3.2 TECHNICAL DATA
Description Units Cobra 40-10 Cobra 40-25
Transmission ratio 40 :1 40 :1
Flow volume per double stroke (DS) cm3
cu inch
10
0.6
25
1.5
Maxi. operating pressure MPa
bar
psi
25
250
3626
25
250
3626
Maxi. possible strokes in operation DS/min 200 200
Min. - Maxi. air inlet pressure MPa
bar
psi
0.25-0.6
2.5-6
36.3-87
0.25-0.6
2.5-6
36.3-87
4.2 SCOPE OF SUPPLY
Part No. Qty Description
322040 1 Diaphragm pump Cobra 40-10 consisting of:
Material pump, air motor, connection elements
322102 1 Diaphragm pump Cobra 40-10 on frame consisting of:
Material pump, air motor, connection elements
2308721 1 Diaphragm pump Cobra 40-25 consisting of:
Material pump, air motor, connection elements
2308722 1 Diaphragm pump Cobra 40-25 on frame consisting of:
Material pump, air motor, connection elements
The standard equipment includes:
322981 1 Information plate
236219 1 Earthing cable assy.
341434 1 Double open ended spanner
See chap. 3 1 Certificate of conformity
322850 1 Operating manual German
See chap. 1 1 Operating manual in the local language:
The delivery note shows the exact scope of delivery.
Accessories see chapter 7.

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Cobra.
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
SIHI_0023_GB
WARNING
Outgoing air containing oil!
Risk of poisoning if inhaled
Provide water-free and oil-free compressed air (quality standard
5.5.4 as per ISO 8573.1) 5.5.4 = 40 μm / +7 / 5 mg/m³.
* A rated sound pressure level measured at 1 m distance according to DIN EN 14462: 2005.
Reference measurements have been made by SUVA (Swiss accident insurance institute).
Description Units Cobra 40-10 Cobra 40-25
Ø air inlet connection (female) Zoll
inch
G 1/2 G 1/2
Min. Ø compressed air hose mm
inch
13
0.51
19
0.75
Air consumption at 0.6 MPa; 6 bar; 87
psi per DS
NL 3.5 8.3
Sound pressure level at maxi.
permissible air pressure *
dB(A) 74 76
Sound pressure level at 0.45 MPa; 4.5
bar; 65.27 psi air pressure *
dB(A) 72 74
Sound pressure level at 0.3 MPa; 3 bar;
43.5 psi air pressure *
dB(A) 69 71
Diameter piston of air motor mm
Inch
80
3.15
100
4
Diameter material inlet connection
(male)
mm M36x2 M36x2
Diameter material outlet connection
(female)
Zoll
Inch
G 3/8 G 1/2
Weight kg
lb
19
41.9
33
72.8
pH range of the material pH 3.5-9 3.5-9
Maxi. material pressure at pump inlet MPa
bar
psi
2
20
290
2
20
290
Material temperature °C
°F
+10 ÷ +80
+50 ÷ +176
+10 ÷ +80
+50 ÷ +176
Ambient temperature °C
°F
+10 ÷ +60
+50 ÷ +140
+10 ÷ +60
+50 ÷ +140
Allowable sloping position at work ±10 ±10
Filling amount hydraulic oil L
Cu inch
0.065
3.97
0.120
7.32

15
Cobra.
B
D
E
F
H
I
K
L
M
G
A
C
B_01201
Cobra 40-10
B_02943
G
P
Q
N
O
R
F
B_02944
B
D
E
F
H
I
L
M
G
A
C
K
Cobra 40-25
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
4.3.4 DIMENSIONS AND CONNECTIONS
Dimension Cobra 40-10
mm; inch
Cobra 40-25
mm; inch
A 505; 19.88 605; 23.82
B 313; 12.32 379; 14.92
C 322; 12.68 373; 14.69
D 134; 5.28 134; 5.28
E 55; 2.16 55; 2.16
F 182; 7.16 182; 7.16
G 80; 3.15 80; 3.15
HM6 M6
I ø25; ø0.98 ø25; ø0.98
K M20x2 M20x2
L M36x2 M36x2
M NPSM1/4-18 NPSM3/8-18
N 149; 5.87 149; 5.87
O 91; 3.58 91; 3.58
P 107; 4.21 107; 4.21
Q 175; 6.89 175; 6.89
R ø7; ø0.28 ø7; ø0.28

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Cobra.
BAR
BAR
BAR
BAR
BAR
BAR
"?
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
4.3.4 VOLUME FLOW
Wagner Airless nozzle Volume flow in l/ min.*
ø inch ø mm Spray angle
bei
7 MPa
70 bar
1015 psi
bei
10 MPa
100 bar
1450 psi
bei
15 MPa
150 bar
2175 psi
0.007 0.18 40° 0.1650 0.2000 0.2400
0.009 0.23 20-30-40-50-60° 0.2060 0.2500 0.3090
0.011 0.28 10-20-30-40-50-60° 0.2950 0.3450 0.4260
0.013 0.33 10-20-30-40-50-60-80° 0.4530 0.5280 0.6600
0.015 0.38 10-20-30-40-50-60-80° 0.5770 0.6720 0.8130
0.017 0.43 20-30-40-50-60-70° 0.7310 0.7860 1.0640
0.019 0.48 20-30-40-50-60-70-80° 0.9260 1.0920 1.3700
0.021 0.53 20-40-50-60-80° 1.1430 1.3600 1.6900
Cobra 40-10
0.023 0.58 20-40-50-60-70-80° 1.3700 1.5900 2.0100
0.025 0.64 20-40-50-60-80° 1.6200 1.9100 2.4000
0.027 0.69 20-40-50-60-80° 1.8300 2.1300 2.6800
0.029 0.75 60° 2.1900 2.5100 3.1700
0.031 0.79 20-40-50-60° 2.4000 2.7700 3.4900
0.035 0.90 20-40-50-60° 3.2200 3.7400 4.6900 Cobra 40-25
0.043 1.10 20-50° 5.0700 6.0400 7.4600
0.052 1.30 50° 5.1200 6.5000 7.5200
* Flow volume refers to water.
Maximum ranges for continuous operation at 200 DS/min.
4.3.5 PERFORMANCE DIAGRAMS
Example Stroke frequency (DS/min.)
Material pressure bar (psi) Air consumption (scfm)
Fluid rate water (nl/min)

17
Cobra.
NL
/
mi
n
L
/
mi
n
B_01203
C
nl/min
<scfm>
bar (MPa)
<psi>
250 (25)
<3625>
200 (20)
<2900>
150 (15)
<2175>
100 (10)
<1450>
50 (5)
<725>
0
00.4
<0.1>
0.8
<0.2>
1.2
<0.3>
1.6
<0.4>
2
<0.5>
2.4
<0.6>
l/min
<gpm>
0
1000
<35>
800
<28>
600
<21>
400
<14>
200
<7>
040 80 120 160 200 240
A
A
BB
C
B_02947
C
nl/min
<scfm>
bar (MPa)
<psi>
250 (25)
<3625>
200 (20)
<2900>
150 (15)
<2175>
100 (10)
<1450>
50 (5)
<725>
0
01
<0.26>
2
<0.53>
3
<0.79>
4
<1.06>
5
<1.32>
6
<1.59>
l/min
<USgpm>
0
1500
<53>
1200
<42>
900
<32>
600
<21>
300
<11>
040 80 120 160 200 240
AA
BB
C
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
Diagram Cobra 40-10
Stroke frequency (DS/min.)
Material pressure
Air consumption
Fluid rate (water)
A = 6 bar (0.6 MPa; 87 psi) Air pressure
B = 4.5 bar (0.45 MPa; 65 psi) Air pressure
C = 3 bar (0.3 MPa; 44 psi) Air pressure
Diagram Cobra 40-25
Stroke frequency (DS/min.)
Material pressure
Air consumption
Fluid rate (water)
A = 6 bar (0.6 MPa; 87 psi) Air pressure
B = 4.5 bar (0.45 MPa; 65 psi) Air pressure
C = 3 bar (0.3 MPa; 44 psi) Air pressure

18
Cobra.
1
4
6
9
3
5
2
16
7
13 14
17
10
11
12
15
8B_02945
Cobra 40-25
1
4
6
9
3
5
2
7
13 14
10
11
12
15
8
B_01204
Cobra 40-10
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
4.4 FUNCTIONS
1 Control housing with integrated
silencer
2 Air regulator
3 Ball valve
4 Air motor
5 Compressed air connection
6 Mounting flange
7 Return valve
8 Material outlet
9 Material pump
10 Material inlet
11 Earthing connection
12 Shuttering pressure stage
13 Return fitting
14 Pusher for inlet valve
15 Air discharge opening
16 Safety valve
17 Fixing High pressure filter
(Accessories)
4.4.1 PUMP
General
The double diaphragm pump is driven with compressed air.This compressed air moves up
and down the air piston in the air motor (4) and thus also the piston rod in the pressure
stage (9).
At the end of each stroke the compressed air is redirected by a change over valve and the
control piston. The up- and down stroke of the 2 diaphragms within the colour stage is
raised by hydraulic oil, which is moved by the piston in the pressure stage.
At each piston stroke working material will be sucked in and delivered to the gun at the
same time.
Air motor (4)
The air motor with its pneumatic reverse (1) does not require pneumatic oil. The com-
pressed air is fed to the motor over the air regulator (2) and the ball valve (3).
The air motor is fitted with a safety valve. The safety valve has been set and sealed at the
factory. With pressures over and above the permissible operating pressure the valve, which
is held with a spring, automatically opens and releases the excess pressure.

19
Cobra.
B_01205
"?
B_01207
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
Vertical set-up Horizontal set-up
CAUTION
Over-head operating or storage (Air motor with pressure regulator downstairs)
Air could get into the hydraulic oil circuit which would lead to malfunction
Avoid over-head operating or over-head storage.
Deaerate, see service instructions.
SIHI_0071_GB
Set-up
The Cobra pump may only be operated in horizontal set-
up or in vertical set-up as shown in pictures. Over head
operating is not permitted.
Over-head set-up
Material pump (9)
The material pump has been designed as a double diaphragm pump with exchangeable
inlet valves and outlet valves. Change between spraying mode and circulation mode with
the return valve (7).
WARNING
Overpressure!
Risk of injury from bursting components
Never change the safety valve setting.
SIHI_0026_GB

20
Cobra.
224
1
5
B_01208
B_01235
2
3
1
B_02946
1
4
5
2
3
6
2
33
1
OPERATING MANUAL
EDITION 01/2012 PART NUMBER DOC322851
1 Air pressure regulator
2 Ball valve
3 Pressure gauge
4 Compressed air connection
5 Filter pressure regulator AirCoat (Option)
The AirCoat regulator (5) must mounted in all mounting variants
of diaphragm pump in vertical position.
Positions of the ball valve:
1 Closed: Operating pressure in the air motor will be vented.
(Control pressure is available)
2 Closed: The air motor can still be under pressure.
3 Open: Working position.
4.4.2 PRESSURE REGULATOR UNIT COBRA 40-10
4.4.3 PRESSURE REGULATOR UNIT COBRA 40-25
1 Pressure regulator
2 Ball valve
3 Pressure gauge
4 Compressed air connection
5 Safety valve
6 Filter pressure regulator
AirCoat (Option)
Positions of the ball valve
1 Open: Working position
2 Closed:The air motor can still be under pressure.
3 Closed:The operating pressure in the air motor is aired out by
pulling on the ring
(Control pressure (6) is available).