Graco 2K device EcoMix 2000 Operation manual

USER INFORMATION
6000303E
KEEP FOR FUTURE USE Rev. C
B.8.20.60
2K device EcoMix
®
2000
ND 85 20
ND 85 35
ND 85 50
ND 85 85
HD 50 20
HD 50 35
HD 50 50
GRACO
®
GRACO N.V.
Industrieterrein “Oude Bunders”
Loc. 2206 - Slakweidestraat 31
3630 Maasmechelen - Belgium
Tel.: [phone] Fax: [phone]

REGULAR TESTING OF THE APPLIANCES
Person responsible
Test certificate No. Test date Company Name
The fluid spraying equipment is intended in particular for surfacing (e.g. airless paint spraying
equipment, two-component coating equipment).
The operator must ensure that fluid spraying equipment is tested for proper operation after an
operating pause of more than 6 months, and at least every 12 months by a competent person1).
The operator must ensure that the test results are properly recorded in writing for every fluid spraying
equipment 2) and kept until the next test.
The operator must ensure that the test certificate is available at the place of use 3) of the fluid
spraying equipment.
1) A competent person is somebody that has sufficient knowledge in the field of fluid spraying
equipment based on professional training and experience; and is sufficiently conversant with
the relevant national health and safety regulations, accident prevention regulations,
recommendations and generally accepted rules and industrial norms to evaluate fluid spraying
equipment.
2) Written records (test results) can be for exemple test certificates.
3) At the place of use, a copy of the test certificate or a test stamp on the appliance is considered
as in compliance with the requirements.
-Extract from: Arbeiten mit Flüssigkeitsstrahlern (VBG 87)
Issued on: 10th October 1993
§ 23 (1), (3) and (4)
Durchführungsanweisung VBG 87
to § 1 Para. 1 and to §23 Para. 1, Para. 3, Para. 4

1
Subject to change Cont’d 1of 38
Prepared by
Checked by
25.07.96
B 8.20.60-B
Issued
06.02
USER INFORMATION
OPERATING INSTRUCTIONS
29.07.96
GRACO
ECOMIX 2000
BASIC VERSION, BASIC APPLIANCE, COMPLETE APPLIANCE
The original manufacturer's nameplate is on the 2K device.
Please compare all specifications and supplement, if
necessary.
CONTENTS OF USER INFORMATION
OPERATING INSTRUCTIONS Page
CORRECT USE 2
FUNCTIONAL DIAGRAM 2
DESCRIPTION OF FUNCTIONS 4
EQUIPMENT COMPONENTS – IMPORTANT INFORMATION 4
LIST OF TOOLS 9
INSTALLATION 9
START UP 12
IMPORTANT INFORMATION CONCERNING COMMISSIONING AND OPERATION 17
OPERATION 18
MAINTENANCE AND INSPECTION, REPAIR 19
TORQUES 30
SHUT DOWN 32
COMPONENTS FOR ND MODELS ONLY – IMPORTANT INFORMATION 33
TROUBLE SHOOTING 36
NOTES 37
Self-monitoring system
Important directives, regulations and rules to comply with; user information;
Customer Service
TECHNICAL PRODUCT DESCRIPTION Page
DESCRIPTION OF THE 2K DEVICE 01
SUITABILITY, FLUID 02
TECHNICAL DATA 03
Key
Construction kit; data; sound emission
Construction materials of wetted parts
Dimensions, threaded screw connection, rated diameters
NOTES 07
LIST OF REPLACEMENT PARTS (KITS)
REPLACEMENT – LOWER PUMPS, REPLACEMENT ACCESSORIES (extract from sales catalogue)
The following are included separately:
TEST CERTIFICATE (Final acceptance)
EC – DECLARATION OF CONFORMITY (to be attached to 2K device)
BRIEF OPERATING INSTRUCTIONS, WARNING SIGNS
Read and follow up the operator
manual and the safety instructions
before taking the pump into
operation
In this manual important information is
marked with the following symbols:
Information affecting your safety
Important operational directions
Ensure that all other users know and
understand all safety directions.

B.8.20.60-B
- 2 -
3.1
9, 10, 23
11, 12,
13, 14
15, 16
2.1
CORRECT USE
ECOMIX 2000 equipment is exclusively manufactured for common applications in surfacing
technology, for spraying or discharging or similar work with 2K fluids.
Any other purpose above and beyond this is considered as incorrect use. We are not liable for any
damage or injury resulting from this; the user will bear sole liability in such cases.
Correct use includes observing operating, maintenance and inspection conditions and regulations laid
down by us.
The ECOMIX 2000 may only be operated, maintained and repaired by personnel familiar with, and
trained to recognize the inherent dangers.
The relevant accident prevention regulations as well as safety and medical rules must be respected.
Unauthorized modifications to the appliance releases us from any liability for damages arising from
this.
The user is responsible for the correct installation of the appliance.
FUNCTIONAL DIAGRAM
See figure on the page
D2K-DEVICE
ECOMPRESSED AIR SUPPLY
FAIR EXHAUST SOUND SUPPRESSION
GFLUID SUCTION SYSTEM
HFLUID PRESSURE SYSTEM
ISUPPORT (not shown)
JFLUSHING PUMP
KFLUID PRESSURE SYSTEM (ND MODELS ONLY) see page 33
1Compressed air container Fluid container
2Pipeline or hose Suction pipe
Air filter Hydraulic unit
3Pressure regulation valve High-pressure screen
Manometer bs Valve unit
4Ball valve bt Static mixer
5Ball valve bu Hose line
6Safety valve cl Spray gun
7Safety valve cm Strainer
8Silencer cq Wet cup
cr Pressure regulation valve with manifold for
bursting disc

B.8.20.60-B
- 3-
For ND models only

B.8.20.60-B
- 4 -
2.1
DESCRIPTION OF FUNCTIONS
Compressed air is fed from a pressure tank 1to the 2K device Dvia a tube or hose line 2and a
pressure regulation valve 3, if possible through a separate air filter .
The air supply from the pressure tank to the 2K device can be interrupted by the ball valve 5.
The ball valve 4is used to release condense manually, - an automatic moisture trap is
recommended here.
The safety valve 6protects the pressure tank against unacceptable air pressure increases (e.g.
when heated).
Because it is required and the compressed air supply Eis usually not installed for the 2K device
alone, the piston pump also features a safety valve 7.
During operation of the piston pump air motor, the compressed air escapes into the atmosphere via
the silencer 8, thus relieving its pressure.
The fluids (A = base and B = hardener ) are sucked out of the containers (A = 9and B = bl) into the
piston pump bo and bp through suction lines bm and bn and supplied separately under high pressure
through the high-pressure screen bq and br the valve unit bs and the static mixer bt. Here they are
mixed well and the fed over the hose line bu to the spray gun cl.
The strainers cm protect the 2K device against foreign substances that might have accidentally
entered the fluid.
A wet cup (flushing agent tank) cq is indispensable for hydraulic units
as well as for valve units of this design and is decisive for its installation.
If the equipment is not operated for a longer period of time (exceeding the processing time), it must be
flushed from the valve unit bs to the spray gun cl. This is done with the flushing pump Jalong the
suction line cn from container co.
During the flushing procedure the pressurized solvent is led to the valve unit bs, then to the mixer bt,
along the suction line bu to the spray gun cl.
The ND models have a pressure regulation valve with a manifold for a bursting disc bt behind the
mixer cr, that protects the hose line bu and the spray gun cl against overpressure.
EQUIPMENT COMPONENTS – IMPORTANT INFORMATION
The following components are required in an operational system:
DTHE 2K DEVICE
The functional description of the 2K device can be found in the corresponding section in the
"Technical Product Description B. 8.20.60-P".
ETHE COMPRESSED AIR SUPPLY
The compressed air supply consists of the compressor, the pressure tank with moisture trap, possibly
a compressed air drier and pipeline. The compressed air supply is generally already available to the
user.

B.8.20.60-B
- 5-
3.1
−When compressed air supply needs to be installed, the relevant accident prevention regulations,
safety rules and user information must be respected, in particular the information supplied by the
compressor manufacturer.
The connection between the 2K device and the compressed air line must be flexible to avoid rupture
caused by vibration.
A hose line is most suitable
−Rated diameter DN16 or more
−Working pressure = maximum system pressure, preferably > 16 bar (for max.
system pressure on the 2K device, see pages 22 and 23).
−Air and ambient temperatures -20° to +50 °C
In areas with a danger of explosion compressed air lines and hose lines must be electrically
conductive to avoid electrostatic charging.
The pressure regulation valve and the manometer in the functional diagram
are part of the 2K device.
Every 2K device features a shut-off mechanism (a ball valve)
- This enables a quick and safe shut-off of the 2K device for operational breaks, maintenance work
and in cases of errors.
The rule for ball valves: wings transverse to flow direction means that the line is shut off
Do not use PTFE tape hemp to seal connections, this leads to pressure regulation valve malfunction
due to residue from the compressed air supply.
The following special requirements apply to the quality of the compressed air supplied to the 2K
device. −Condense and residue oil from the compressor are separated mechanically
(pressure tank, compressed air filter)
−Lubrication of compressed air not necessary
−Temperature of compressed air < 50 °C
In painting processes the compressed air must be free of substances (oil, silicone) that can lead to the
formation of pits.
−This also applies to all components of the compressed air supply.

B.8.20.60-B
- 6 -
FAIR EXHAUST SILENCER
The sound emission of an air powered 2K device is damaging to hearing in the absence of a silencer
[> 115 dB(A)].
As there is a relation between sound absorption and the formation of ice on the air motor control
system, the sound level cannot be reduced with a silencer as much as would be desired [not to
70 dB(A)].
All basic and complete ECOMIX 2000 systems are therefore fitted with correctly proportioned
silencers.
For detailed information on the sound pressure level, see the
corresponding section in the "Technical Product Description
B. 8.20.60-P"
Do not remove the silencer of the flushing pump when the 2K equipment is operating.
−The necessity to wear hearing protection depends on the working pressure and the
resulting sound pressure level.
GFLUID SUCTION SYSTEM
The suction connections of ECOMIX 2000 equipment are constructed to allow that a swivel unit
(angular or T-shaped) and a connector can be screwed in.
Connection units 1 and 2 are used to connect the suction system, the suction line and the suction cup.
All wetted metal parts of the suction unit are made from
austenitic stainless steel (- suitable for water-based paints).
Most of the 2K devices are equipped with a connector 1and a suction
system 2(suction hose, tube and suction sieve).
The swivel connector enhances the flexibility of the suction hose so an
almost empty fluid container will not be turned over by the recoil force of
the suction hose.

B.8.20.60-B
- 7 -
The diameter of the suction line is designed to enable suction of fluids with a kinematic viscosity of up
to 750 mm²/s (cSt) by the 2K device without difficulty. A higher viscosity rating can result in reduced
suction performance, or even interrupted suction, that can be identified by an increasing pressure drop
during the change of direction (pulsating pressure).
−Measures for improvement are:
keeping the suction line as short as possible or a short suction hose with a larger diameter, or a
suction cup.
Specifications of suction assembly:
•Electrically conductive, maximum permissible resistance 3 x 104Ohm/m (tested to ISO 8031) or
leakage resistance to earth < 106Ω•
(- Suitable for use in locations with an explosion hazard.)
•The individual parts of the suction line are designed to withstand an overpressure of 12 bar
(- suitable for suction heights of up to 8.5 m).
•The suction hose and the strainer are resistant to solvents commonly used in surface coating, and
are silicone-free.
•Minimum rated width DN 19
•Fluid temperature 10 to 85 °C
•Mesh size of screen 1.8
In case of a fixed installation, the connection between the 2K device >
fluid circulation line or between the 2K device > pressure tank must be
flexible (- to avoid rupture caused by vibration).
The suction line 3therefore consists of the connector 1, a nipple 4
and the smooth, stainless steel braided suction hose 5and threaded
connection on the side of the pressure tank. A threaded connection
G 1/2 A with 60° sealing core is required.
The inlet pressure (pressure in a supply system, e.g. in the circulation line), acting on the
hydraulic units and the suction line must not exceed 10 bar.
It is recommended to install a small container 6to the connector 1on the
hardener side to mix smaller amounts of fluid.
The container, the connector, the cover and the inserted screen are made of
austenitic stainless steel (- suitable for water-based paints).
* The container can be protected with an additional burst disc (Part No. 76188 020002) against
rupture by vibration.
•The capacity of the container is 5 l
•Design certification for highly inflammable liquids of classes AI and AII is not required, since the
container is made entirely from stainless steel.
•Suitable for use in areas with explosion hazards, because electrostatic charging cannot be
generated.

B.8.20.60-B
- 8 -
HFLUID PRESSURE SYSTEM
The fluid pressure system consists of the hose line and the discharge or spray gun. In some cases a
pressure regulation valve has been installed as well.
A pressure regulation valve 7(mechanically or pneumatically controlled) can be
fitted at the fluid outlet of the 2K device.
Follow the relevant user information.
If we supply the pressure-regulation valve, the user information has been provided.
The hose line 8connects the 2K device with the spray gun.
The hose line is connected to the 2K device without seal rings (sealed head
screwed joint).
For surface coating applications, the hose line must have the following
specifications:
•Electrically conductive, max. resistance 3 •104Ohm/m (tested to ISO 8031)
•The inside pipeline coating must be resistant to normal solvents, the outer coating resistant under
certain conditions.
•Silicone-free
•Operating temperature -40 to +80 °C
•Complies with relevant standards (dimensioning, marking)
•The sealing head nipples of the hose fittings are made from austenitic stainless steel or zinc plated
and yellow chrome plated steel.
•Working pressure must be higher than the pressure of the 2K device (approx. 250 bar)
•Connection thread normally G1/4.
The nozzle or spray gun 9is installed at the end of the hose line (thread size
G 1/4).
Follow the relevant user information.
The user information has also been provided when we supplied the
nozzle/spray gun.
ISUPPORT
The equipment support (trolley) is a regular part of every 2K device.
The trolley has four wheels.
Since the trolley wheels cannot be locked, the floor surface must incline as little
as possible. Secure with wedges, if necessary.
The wheels are not electrically conductive.
This means that the 2K device can only be used in locations with explosion
hazards (i.e. Zone 1), when specific safety measures are taken. There are no
objections to its use in Zone 2.
The label on the right is affixed to the trolley and refers to
the guidelines to be respected.

B.8.20.60-B
- 9-
gTHE FLUSHING PUMP
The flushing pump is a regular part of the 2K device.
It is supplied with the appropriate user information.
Pressure range
2K device Flushing pump Model User Information
ND
MD
HD
005.035-DP
020.035-DP
030.020-DP
See section B.8.20.60-E410
See section B.8.20.60-E410
See section B.8.20.60-E410
LIST OF TOOLS
Double spanner
DIN 895 Allen Screw DIN 911 Sickle spanner, adjustable Pliers DIN 5256-D Phillips screwdriver DIN 5262
7 x 8 3
8 x 10 4Ø 35 up to Ø 60
Part No. 70620 100003 for retaining ring Ø 19 up to Ø 60 Gr. 2
(for thread M4)
10 x 11 5
11 x 13 6Ø 60 up to Ø 90
Part No. 70620 100004
12 x 14 8
13 x 17 10*
17 x 19 14
19 x 22 17 Tubular socket wrench DIN 659 Screwdriver for slotted screws DIN 5265
22 x 24 SW 12
30 x 32 Bolts* Part No. 76161 057001 Thread cutter 1.6 x 8
(for MS thread)
32 x 36 * supplied with each 2K device
INSTALLATION
The 2K device must be installed on an even surface that is strong enough.
Do not install in narrow, enclosed spaces.
(- danger of malfunction due to icing of the air motor control).
When installing in locations with an explosion hazard, zone 1, you should respect the guidelines for
explosion prevention (EX-RL) ZH1/10 (chapter 2), as regards assembly materials.
The 2K device must not be transported with a hoist
VENTILATION OF THE WORK AREA
Must be provided.
GROUNDING
In locations with an explosion hazard, the appliances must be grounded.
In accordance with the directive on "Static Electricity" ZH1/200, the following applies:
The grounding connection must be mechanically resistant and corrosion-proof to withstand all
conditions to which it may be subjected during operation. The conductors that establish the grounding

B.8.20.60-B
-
10
-
should be connected to appliances and the earth by soldering, welding or stable screw fittings. Do not
use chains. When making connections or during repair work, in particular to pipelines, ensure that the
conductive path is not interrupted by non-conductive parts.
The grounding connection must be tested for correct working conditions
by a qualified engineer.
−Grounding points on the appliances are appropriately marked:
Portable, conductive vessels or appliances that can be electrically charged must also be grounded
This is usually achieved by means of a flexible connection, secured e.g. by a clip.
−Do not use chains.
COMPRESSED AIR SUPPLY
The compressor and compressed air container (pressure tank) must have adequate dimensions.
Check
−Also refer to page 5, "Quality of Compressed Air"
CONNECTIONS
Compressed air line 2K device. Suction line 2K device.
Compressed air line 2K device
flexible and electrically conductive in locations with an explosion hazard.
−see pages 4 to 8
COMPRESSED AIR LINE
When a compressed air line needs to be installed, it must have a gradient of 3 to 5 mm per meter
down to the compressed air tank or the moisture trap. When a branch line has to be installed from an
existing compressed air line, it should connect above the line axis.
When installing curved metal airlines, they should be selected
with a bend radius on the tube axis not smaller than 2.5x the
outside diameter of the line.
- Plastic lines in locations with an explosion hazard must have a
conducting resistance to earth of < 106Ω.
SILENCER
see page 6
−Check by hand that the silencer is fixed in position.
Main line
Auxiliary line
to user

B.8.20.60-B
- 11 -
FLUID SUCTION UNIT
See pages 6 and 7
Screw the connection piece 1or 2into the piston
pump as far as it will go.
Next, back it out 1 to 1.5 turns, to allow the device to swivel.
Respect the following when attaching the suction assembly to the connection 1:
•Insert the tube end of the suction assembly into the connector and press it against the stop in the
internal taper.
When the end of the tube does not touch the stop, the installation is incorrect.
•Continue until clear resistance is felt
−Hold the connector.
Assembly check
Loosen union nut and check whether there is no clearance
between the seal ring and the retaining ring. After loosening, the
nut must be reassembled and tightened with the same tightening
torque as was used in the initial assembly.
Hold the connector.
GENERAL ASSEMBLY INSTRUCTIONS
•Always use the recommended torque
•Grease thread lightly.
•Do not use PTFE tape or hemp
•Components not supplied by us must have dimensions that correspond to the specified
dimensions of the 2K device.
−Follow the manufacturer’s instructions
•Follow the manufacturer's assembly instructions when using cutting rings or double conical rings.
The wetted parts of the suction and pressure system should not have zinc-plated surfaces nor
be made of aluminum when liquids are to be pumped that contain chlorinated hydrocarbons
(halogenated hydrocarbons), e.g. trichloro-ethane or dichloromethane.
−Metal organic reactions can be generated which are explosive and extremely caustic.

B.8.20.60-B
-
12
-
Cover Close
Open
Close
Open
START UP
FILLING THE WET CUP
Fill the coupling housing aup to the middle of the filling
tube bwith solvent.
See manual 6000354 section B.13.50.01-B for the
start up of the hydraulic valves
The solvent used must be compatible with
materials to be used later; we recommend
consulting your material supplier.
In 2K devices with covered filling tubes, the cap must be moved to the side first and returned to its
original position after filling.
INSTALLING THE FILTER INSERT
The integrated filters of the 2K devices are supplied without inserts. The screen inserts (choice of
mesh size depends on the nozzle used) must be fitted later.
−Remove the union nut and take off filter housing. Place the filter insert over the support spring
into the housing and re-install the housing.

B.8.20.60-B
- 13 -
FLUSHING THE 2K DEVICE
Each every 2K device is factory-tested after
assembly with an anti-corrosion liquid. It is
necessary to flush out the rest of this liquid
and any other contaminants that might have
entered during installation thoroughly with
solvent (flushing agent).
The solvent must be compatible with
the fluid to be processed later; we
recommend that you consult the fluid
supplier.
1. For the flushing procedure of the flushing
pump (including the hydraulic valves) refer
to the section “Flushing from the valve
unit”
2. Flushing all the rest of the 2K device
1. Suction installations “A” and “B” in
solvent.
2. Turn lever bearing in position “O”
(mixing ration 1:1); adjustment, see
page 15.
3. Open fluid pressure valves bo and bp,
when installed (turn left).
4. Hang discharge units bm and bn in an
empty vessel.
5. Engage the spray gun (without tip).
6. Move the lever 8of the hydraulic valve unit
up to the “SPRAY” position – Run the
device slowly (air pressure valve 1and
“SPRAY” switch ON) until clear solvent is
discharged from the gun. Move the lever 8
down to the “MEASURING CONTENT”
position until
the discharge units have been cleaned.
Remove the solvent from the equipment by air-drying into the drain containers using the suction
installations “A” and “B”.
FLUSHING WITH THE FLUSHING PUMP
Flushing from the valve unit:
1. Suction installation of the flushing pump in solvent
2. Move the lever 8up to the “SPRAY” position
3. Engage the spray gun (without tip)
4. Move “FLUSH” switch br to position “A”
Turn on the flushing pump using air regulation valve bq. Move the switch br to “B”, once the “A”
system has been cleaned. Move the switch to the “O” position, once the “B” system has been cleaned.
Spray
Discharge Spraying
Measuring contents
Hardening
agent Basic
material
Flush
Clamp

B.8.20.60-B
- 14 -
Flushing the measuring installation:
1. Suction installation of the flushing pump in solvent
2. Move the lever 8up to the “MEASURING” position
3. Hang discharge units bm and bn in an empty vessel
4. Open the fluid pressure valves, when installed (turn left) Flush sections “A” and “B” as described
above.
STARTING UP THE 2K DEVICE
Because the AIR MOTOR OF THE 2K device works automatically with back pressure, it can only be
started (i.e. fluid be conveyed) when fluid is discharged from the pressure system, e.g. by using the
spraying equipment.
BLEEDING THE AIR FROM 2K DEVICE
The air that has entered the 2K device and the system after flushing must be thoroughly removed.
Move the lever 8of the hydraulic valve unit down to the measurement position and return both
discharge units to the container (circulation).
Start the bleeding by moving the “SPRAY” switch to the ON position and opening the “air” pressure
valve 1slowly from its closed position, until the equipment runs slowly.
Bleed the system completely (reduce air pressure).
Finish by flushing the measuring installation, see above.
−Operate the 2K device without hydraulic counterpressure, until no more air is
pumped.
Finish by flushing the measuring installation, see above.
Bleeding the fluid hose (from the valve unit) and the spray unit without tip: Move the lever 8of the
hydraulic valve unit up to the “SPRAY” position and discharge the mixed material into an empty
vessel. Start the equipment as described above.
−Spraying equipment without nozzle, discharge engaged, until no more air is
discharged
PREPARING FOR SPRAYING
−Adjust spray unit, installing tip.
ADJUST (PLACE) THE PACKING
Slowly increase the fluid pressure to the maximum value. Operate the 2K device at this pressure for a
short time. Then set the required working pressure.
−2K device is ready for use
LOW AMBIENT TEMPERATURES
If starting up or operation is carried out at a ambient temperatures around 10 °C the compressed air
should be supplied with anti-freeze from a dosing apparatus (compressed air oilier). We recommend
ethylene glycol,diluted,with high-pressure additives,1000 ml,part no.6789257).
It is recommended to cover the device loosely with a plastic foil cover before operation (the protection
of the brief operating instructions and the command devices against setting paint).

B.8.20.60-B
- 15 -
ADJUST THE MIXING RATIO
Run the device slowly and stop it at the
end of its upward stroke (“SPRAY” switch
“OFF”).
Insert the bolts 2into opening 3.
Run the machine slowly until the lever
recess touches the bolt; switch off. To set
the mixing ratios, loosen the retaining
screws 4(4 in all) and 5(1 in all) one
turn.
Set the lever bearing (see page 25) using
the Allen screw 6in accordance with the
value table 7(described on page 16) and
tighten the cylinder screws 4and 5. Pry
up the bolts and pull them from the
opening.
MEASURING
Basic condition:
The system up the closed spray gun, the
fluid must be under maximum fluid
pressure. To achieve this, move the lever
8of the hydraulic valve unit up (SPRAY) and increase the fluid
pressure.
Next, turn back the pressure regulation valve “Air”
1and move the lever down again (MEASURE).
1. Measuring with free discharge (standard
version)
Hang discharge units bm and bn in containers
with base material and hardener.
Run the machine, set to approx. 15 double
strokes per minute and stop it. (“SPRAY”
switch to OFF).
Insert measuring nozzle bt in holder cl and
insert the discharge unit bm and bn in retainer
bu. To measure,the devise must be engaged
and disengaged with the “SPRAY” switch.
2. Measuring under working pressure (special accessory)
Hang discharge units bm and bn in containers with base material and hardener.
Run the machine slowly; increase the speed of the system by alternately using the “Air” pressure
regulation valve 1and pressure regulation valves bo and bp (base material and hardener), until
the operating conditions have been reached (maximum pressure and double stroke frequency).
Switch off the device (“SPRAY” switch to OFF).
Insert measuring nozzle bt in holder cl and insert the discharge units bm and in retainer bn. To
measure, the devise must be engaged and disengaged with the “SPRAY” switch.
To prevent unauthorized use, the lever bu can be removed (turn left) for safety reasons.
Flush the measuring section after the measurement.
Spray
Discharge Spray
Measuring contents
Flush
Clamp
Hardener Basic material

B.8.20.60-B
-
16
-
APPROXIMATE VALUES (A GUIDE)
−for approximate setting of mixing ratios
The middle scales show the theoretical mixing ratios
Base material components (A) in accordance with the combinations of the displacement pump
Hardener components (B)
(specified in the matrix).
The upper and lower scales are auxiliary values and are used to ease renewed adjustment, e.g. after
repair.

B.8.20.60-B
- 17 -
IMPORTANT INFORMATION CONCERNING STARTING UP AND OPERATION
Only work in well-ventilated areas in view of health hazards, fires and explosions.
The 2K device should only be operated dry for short periods of time under supervision and only
with low air inlet pressure. Dry operation after the fluid has passed through must be strictly
avoided. It will damage or destroy important component parts.
Do not run the 2K device without wet cup (solvent in the gear housing and the hydraulic
valves). - This will result in increased wear of the packing and a substantial reduction of the
service life
•Continuous operation with high stroke frequency leads to extensive icing of control system (see
technical product description B. 8.20.60-P, page 04).
−Increased pulsation until the 2K device stalls.
•During operation, do not take the suction hose out of the fluid and push it back in.
−If air enters the system, this will result in reduced painting results
−Can lead to incorrect mixing ratios.
Never unscrew any parts from the flushing pump during operation e.g. the silencer.
Wear personal safety equipment (breathing apparatus, goggles, gloves, etc.), when working
with fluid that has a health hazard.
Be aware of the rebound forces that are released (keep a tight grip on the gun, use a secured
stand, work with care) when the spray system is activated.
Because of the risk of fluid injection into the skin, never place the spraying equipment (gun)
directly on any part of the body (thumb, flat of the hand, etc.
Do not point the spray nozzle at people or animals.
Never run the 2K device without its guard. Danger of injury
Do not adjust the contact indicator of the manometer without reason.

B.8.20.60-B
-
18
-
OPERATION
(Also refer to manual 6000354 section B.13.50.01-B)
Start up Open ball valve for air pressure
Turn air pressure regulation valve "FLUSH" up to 3 or 7 bar respectively
Turn air pressure regulation valve "SPRAY" up to spraying pressure
Shut down
The section of the 2K device containing the mixed material (valve unit, mixer, fluid pressure hose,
spray gun) must be flushed for longer stops (also refer to page 32) exceeding the processing time,
overnight and during the weekend.
Turn the“SPRAY” switch to OFF
Engage the gun and press the "RESET" button (21 on page 13) until spraying pressure is
reached.
Trigger the spray gun without the tip and flush, with the “FLUSH’ switch in position “A”, until clean
solvent is discharged from the gun. Repeat the flushing procedure with the switch in position “B”.
Close the air pressure regulation valves for spraying and flushing. Close ball valve for air supply.
It is also recommended that the flushing agent is drained off and that the equipment is filled again
when work recommences (the next day), provided it has not been contaminated.
In order to drain the detergent, turn the detergent filling connector to the left (max. 180°).
Return to the original position before pouring in the solvent.
Do not tighten with a tool (lever)
−Risk of breaking
When 2K devices are not used for a longer period (also refer to page 32), they must be flushed
completely (including the suction hoses for the base fluid and the hardener with solvent). To prevent
paint residue to settle, the solvent must be left in the 2K device during the period the device is not
used. We recommend the use of a “ASE” phenol alkylsulphon acid ester or MESAMOL.
Please consult the fluid supplier about the flushing agent and the compatibility of the flushing
agent.
Do not use nitro thinners or solvents as flushing agents.