Wagner SprayTech Finish 250 User Manual
Airless high-pressure spraying unit
Finish 370
Finish 250
Operating manual 2
0252 882
11 / 2007
Finish 370
Finish 250
WARNING!
Attention, danger of injury by injection!
Airless units develop extremely high spray pressures.
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Never bring ngers, hands or other body parts into contact with the spray jet!
Never point the spray gun at yourself, other persons or animals.
Never use the spray gun without spray jet safety guard.
Do not treat a spray injury as a harmless cut. In case of injury to the skin by coating material
or solvents, consult a doctor for quick and correct treatment. Inform the doctor about the
coating material or solvent used.
The following points are to be observed in accordance with the operating manual
before every start-up:
1. Faulty units may not be used.
2. Secure a Wagner spray gun with the securing lever at the trigger guard.
3. Ensure earthing.
4. Check the permissible operating pressure of the high-pressure hose and spray gun.
5. Check all the connecting parts for leaks.
Instructions for regular cleaning and maintenance of the unit are to be observed
strictly.
Observe the following rules before any work on the unit and at every working
break:
1. Relieve the pressure from the spray gun and high-pressure hose.
2. Secure a Wagner spray gun with the securing lever at the trigger guard
3. Switch the unit o .
Ensure safety!
Finish 370 / 250
Contents
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CONTENTS
1 SAFETY REGULATIONS FOR AIRLESS SPRAYING 4
1.1 Flash point ___________________________________4
1.2 Explosion protection ___________________________4
1.3 Danger of explosion and re from sources of ignition
during spraying work __________________________4
1.4 Danger of injury from the spray jet _______________4
1.5 Secure spray gun against unintended operation ____4
1.6 Recoil of spray gun ____________________________4
1.7 Breathing equipment as protection against solvent
vapors ______________________________________4
1.8 Prevention of occupational illnesses ______________5
1.9 Max. operating pressure ________________________5
1.10 High-pressure hose (safety instructions) ___________5
1.11 Electrostatic charging (formation of sparks or ames) 5
1.12 Use of units on building sites and workshops _______5
1.13 Ventilation when spraying in rooms ______________5
1.14 Suction installations ___________________________5
1.15 Earthing of the object __________________________5
1.16 Cleaning the unit with solvents __________________5
1.17 Cleaning the unit _____________________________5
1.18 Work or repairs at the electrical equipment ________5
1.19 Work at electrical components ___________________5
1.20 Setup on an uneven surface _____________________6
2 GENERAL VIEW OF APPLICATION _____________ 6
2.1 Application __________________________________6
2.2 Coating material ______________________________6
2.2.1 Coating materials with sharp-edged additional materials __________________________________________6
2.2.2 Filtering _____________________________________6
3. DESCRIPTION OF UNIT ______________________ 7
3.1 Airless process ________________________________7
3.2 Functioning of the unit _________________________7
3.3 Explanatory diagram ___________________________8
3.4 Transportation ________________________________8
3.5 Trolley back tting (only Finish 370) _______________8
3.6 Technical data Finish 250 _______________________9
3.7 Technical data Finish 370 _______________________9
4 STARTUP _________________________________ 10
4.1 Unit with suction system _____________________ 10
4.2 unit with upper hopper (5 litres) _______________ 10
4.3 high pressure hose and spray gun ______________ 10
4.4 Connection to the mains network ______________ 10
4.5 Cleaning preserving agent when starting-up of
operation initially ___________________________ 11
4.6 Ventilate unit (hydraulic system) if the sound of inlet
valve is not audible __________________________ 11
4.7 Taking the unit into operation with coating material 11
5 SPRAYING TECHNOLOGY ___________________ 12
6 HANDLING THE HIGHPRESSURE HOSE _______ 12
6.1 High-pressure hose __________________________ 12
7 INTERRUPTION OF WORK ___________________ 12
8 CLEANING THE UNIT _______________________ 13
8.1 Cleaning the unit from the outside _____________ 14
8.2 Suction lter _______________________________ 14
8.3 High-pressure lter __________________________ 14
8.4 Cleaning the Airless spray gun _________________ 15
9 SERVICING ________________________________ 15
9.1 General servicing ___________________________ 15
9.2 High-pressure hose __________________________ 15
10 REPAIRS AT THE UNIT ______________________ 16
10.1 Inlet valve Pusher ___________________________ 16
10.2 Inlet valve _________________________________ 16
10.3 Outlet valve ________________________________ 16
10.4 Pressure control valve ________________________ 17
10.5 Relief valve ________________________________ 17
10.6 Replacing the diaphragm _____________________ 17
10.7 Replacing the power cable ___________________ 18
10.8 Typical wear parts ___________________________ 18
10.9 Connection diagram _________________________ 19
10.10 Remedy in case of faults ______________________ 20
11 SPARE PARTS AND ACCESSORIES ____________ 21
11.1 Finish 370 / 250 accessories ___________________ 21
11.2 Spare parts list Pump head ___________________ 22
11.3 Spare parts list Pump-Aggregate ______________ 23
11.4 Spare parts list high-pressure lter _____________ 25
11.5 Spare parts List Trolley _______________________ 25
11.6 Spare parts list suction system (rigid) ___________ 26
11.7 Spare parts list hopper 5l _____________________ 27
11.8 Spare parts list hopper with TopClean ___________ 27
CE-declaration ____________________________________28
Service network __________________________________ 29
Testing of the unit ________________________________ 30
Important information on product liability_____________ 30
Guarantee declaration _____________________________ 30
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SAFETY REGULATIONS
Finish 370 / 250
1 SAFETY REGULATIONS FOR
AIRLESS SPRAYING
The safety-speci c requirements for Airless spraying are speci ed in:
a) The European Standard „Spray equipment for coating ma-
terials – safety regulations „ (EN 1953: 1998).
b) The regulations of the German employer‘s liability insu-
rance association („Berufsgenossenschaft“) „Using liquid
jets“ (BGV D15) and „Processing coating materials „ (BGV
D25).
c) Guidelines for construction and implementation require-
ments for liquid jets (spraying units) of the German industrial employer‘s liability insurance association (ZH1/406).
The following safety regulations are to be observed in order
to ensure safe handling of the Airless high-pressure spraying
unit.
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1.1 FLASH POINT
1.4 DANGER OF INJURY FROM THE SPRAY JET
Attention, danger of injury by injection!
Never point the spray gun at yourself, other
persons or animals.
Never use the spray gun without spray jet
safety guard.
The spray jet must not come into contact
with any part of the body.
In working with Airless spray guns, the high
spray pressures arising can cause very dangerous injuries. If contact is made with the
spray jet, coating material can be injected
into the skin. Do not treat a spray injury as a
harmless cut. In case of injury to the skin by
coating material or solvents, consult a doctor
for quick and correct treatment. Inform the
doctor about the coating material or solvent
used.
1.5 SECURE SPRAY GUN AGAINST UNINTENDED
OPERATION
Only spray coating materials with a ash point
of 21 °C or higher.
The ash point is the lowest temperature at
which vapors develop from the coating material. These vapors are su cient to form an
in ammable mixture over the air above the
coating material.
1.2 EXPLOSION PROTECTION
Do not use the unit in work places which are
covered by the explosion protection regulations.
The unit is not designed to be explosion protected.
1.3 DANGER OF EXPLOSION AND FIRE FROM
SOURCES OF IGNITION DURING SPRAYING
WORK
Always secure the spray gun when mounting or dismounting
the tip and in case of interruption to work.
1.6 RECOIL OF SPRAY GUN
When using a high operating pressure, pulling
the trigger guard can e ect a recoil force up
to 15 N.
If you are not prepared for this, your hand can
be thrust backwards or your balance lost. This
can lead to injury.
1.7 BREATHING EQUIPMENT AS PROTECTION
AGAINST SOLVENT VAPORS
Wear breathing equipment during spraying work.
A breathing mask is to be made available to the user (regulations of the German employer‘s liability insurance association
(„Berufsgenossenschaft“) „Rules for the use of breathing masks“ (BGR 190), „Using liquid jets“ (BGV D15) and „Processing
coating materials „ (BGV D25).
There must be no sources of ignition such as,
for example, open res, lit cigarettes, cigars or
tobacco pipes, sparks, glowing wires, hot surfaces, etc. in the vicinity.
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Finish 370 / 250
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SAFETY REGULATIONS
1.8 PREVENTION OF OCCUPATIONAL ILLNESSES
Protective clothing, gloves and possibly skin protection cream
are necessary for the protection of the skin.
Observe the regulations of the manufacturer concerning coating materials, solvents and cleaning agents in preparation,
processing and cleaning units.
1.9 MAX. OPERATING PRESSURE
The permissible operating pressure for the spray gun, spray
gun accessories, unit accessories and high-pressure hose
must not fall short of the maximum operating pressure of 25
MPa (250 bar or 3625 psi).
1.10 HIGHPRESSURE HOSE SAFETY
INSTRUCTIONS
An electrostatic charging of spray guns and the high-pressure
hose is discharged through the high-pressure hose. For this
reason the electric resistance between the connections of the
high-pressure hose must be equal to or lower than 1 MΩ.
Only use WAGNER original-high-pressure
hoses in order to ensure functionality, safety
and durability.
1.14 SUCTION INSTALLATIONS
The are to be provided by the unit user in accordance with the
corresponding local regulations.
1.15 EARTHING OF THE OBJECT
The object to be coated must be earthed.
(Building walls are usually earthed naturally)
1.16 CLEANING THE UNIT WITH SOLVENTS
When cleaning the unit with solvents, the
solvent should never be sprayed or pumped
back into a container with a small opening
(bunghole). An explosive gas/air mixture can
arise. The container must be earthed.
1.17 CLEANING THE UNIT
Danger of short-circuits caused by water ingression!
Never spray down the unit with high-pressure or high-pressure steam cleaners.
1.11 ELECTROSTATIC CHARGING FORMATION OF
SPARKS OR FLAMES
Electrostatic charging of the unit may occur
during spraying due to the ow speed of
the coating material. These can cause sparks
and ames upon discharge. The unit must
therefore always be earthed via the electrical
system. The unit must be connected to an
appropriately-grounded safety outlet.
1.12 USE OF UNITS ON BUILDING SITES AND
WORKSHOPS
The unit may only be connected to the mains network via a
special feeding point with a residual-current device with INF
≤ 30 mA.
1.13 VENTILATION WHEN SPRAYING IN ROOMS
Adequate ventilation to ensure removal of the solvent vapors
has to be ensured.
1.18 WORK OR REPAIRS AT THE ELECTRICAL
EQUIPMENT
These may only be carried out by a skilled electrician. No liability is assumed for incorrect installation.
1.19 WORK AT ELECTRICAL COMPONENTS
Unplug the power plug from the outlet before carrying out
any repair work.
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SAFETY REGULATIONS
1.20 SETUP ON AN UNEVEN SURFACE
The front end must always point downwards in order to avoid
sliding away.
If possible do not use the unit on an inclined surface since the
unit tends to wander through the resulting vibrations.
Finish 370 / 250
Both units are able for all common varnishing jobs like
doors, door frames, balustrades, furniture, woodencladding,
fences, radiators (heating) and steel parts.
2.2 COATING MATERIAL
Diluting lacquers and paints or those containing solvents, twocomponent coating materials, dispersion and latex paints.
No other materials should be used for spraying without
WAGNER‘s approval.
Pay attention to the Airless quality of the coating materials to be processed.
The unit is able to process coating materials with up to
15,000 mPas. If highly viscous coating materials cannot be taken in or the performance of the unit is to low, the paint must
be diluted in accordance with the manufacturer‘s instructions.
Attention: Make sure, when stirring up with
motor-driven agitators that no air bubbles
are stirred in. Air bubbles disturb when spraying and can, in fact, lead to interruption of
operation.
2 GENERAL VIEW OF APPLICATION
2.1 APPLICATION
Finish 370 / 250 is an electric driven unit for the airless atomization of di erent painting materials. Also it is able to feed the
internal feeded paint roller, which is available as accessory.
Finish 370 /250 is made for jobs in the workshop and on the
building site
The unit performance is conceived so that its use is possible
on building sites for small- to middle-area dispersion work.
Finish 250 is designed for varnishing jobs. Small jobs with dispersion work are possible.
2.2.1 COATING MATERIALS WITH SHARPEDGED
ADDITIONAL MATERIALS
These particles have a strong wear and tear e ect on valves
and tips, but also on the heating hose and spray gun. This impairs the durability of these wearing parts considerably.
2.2.2 FILTERING
Su cient ltering is required for fault-free operation. To this
purpose the unit is equipped with a suction lter (Item 1) and
an insertion lter in the spray gun (Item 2). Regular inspection
of these lters for damage or soiling is urgently recommended.
A high-pressure lter (Item 3) -available as accessory- is rising
up the ltering surface and will make the work more comfortable.
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Finish 370 / 250
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GENERAL VIEW OF APPLICATION
3.2 FUNCTIONING OF THE UNIT
The following section contains a brief description of the technical construction for better understanding of the function:
Finish 370 / 250 is an electrically driven high-pressure paint
spraying equipment.
The motor (Item 1) drives directly the hydraulic pump.
A piston (2) is moved up and down so that hydraulic oil is moved under the diaphragm (3) which then moves.
In detail:
The downwards movement of the machine opens the disk inlet valve (4) automatically and coating material is sucked in.
During the upwards movement of the diaphragm, the coating
material is displaced and the outlet valve opens while the inlet
valve is closed.
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3. DESCRIPTION OF UNIT
3.1 AIRLESS PROCESS
The main area of application are thick layers of highly viscous
coating material.
At the Finish 370 / 250 unit a diaphragm pump takes in the
coating materials and transports it via a high-pressure hose
to the spray gun with the airless tip. Here the coating material
atomizes since it is pressed through the tip core at a maximum
pressure of 25 MPa (250 bar, 3625 psi). This high pressure has
the e ect of micro ne atomisation of the coating material.
As no air is used in this process, it is described as an AIRLESS
process.
This method of spraying has the advantages of nest atomisation, cloudless operation (depending of a correct unit adjustment) and a smooth, bubblefree surface. As well as these,
the advantages of the speed of work and convenience must
be mentioned.
The coating material ows under high pressure through the
high-pressure hose to the spray gun and is atomized when it
exists from the tip.
The pressure control valve limits the set pressure in the hydraulic oil circuit and thus also the pressure of the coating
material.
A pressure change when the same tip is used also leads to a
change in the amount of paint atomized.
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DESCRIPTION OF UNIT
3.3 EXPLANATORY DIAGRAM
1 Tip guard with airless tip
2 Spray gun
3 High-pressure hose
4 Connection for high-pressure hose
5 Pressure gage
6 Pressure control valve
7 Pressure relef valve
Finish 370 / 250
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Symbols: Spraying
Circulation
8 ON / OFF switch
9 Return tube
10 Suction tube
11 Connection for cleaning with the spray gun
12 Hopper
13 Cleaning ring (TopClean) for hopper (accessory)
14 Inlet valve button
15 Outlet valve
16 Oil measuring stick under the oil screw plug
3.4 TRANSPORTATION
Unroll high-pressure hose and lay it over the shaft.
Pull the locking pins (Item 1) on both sides of shaft. The locking pins can be arrested by a small turn (left or right). Pull
the shaft out and deblock the locking pins. A light pull or push
will help to lock the pins well.
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3.5 TROLLEY BACKFITTING ONLY FINISH 370
Transportation in vehicle
Secure the unit in the vehicle by means of suitable fasteners.
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Pull locking pins (Item 1) on both sides of frame. The locking
pins can be arrested by a small turn (left or right). Move frame
into the other position. Deblock both locking pins so that they
t well in the rest position.
Finish 370 / 250
plug of socket, disassemble suction system
and high pressure hose
GB
DESCRIPTION OF UNIT
3.7 TECHNICAL DATA FINISH 370Before start with the back tting, pull of main
Voltage : 230 V AC, 50 Hz
Fuses : 16 A time-lag
Unit connecting line : 6 m long, 3 x 1.5 mm
Max. current consumption
hose heating : 6.0 A
Degree of protection : IP 54
3.6 TECHNICAL DATA FINISH 250
Voltage : 230 V AC, 50 Hz
Fuses : 16 A time-lag
Unit connecting line : 6 m long, 3 x 1.5 mm
Max. current consumption
hose heating : 4,6 A
Degree of protection : IP 54
Acceptance capacity : 1,1 kW
Max. operating pressure : 25 MPa (250 bar)
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Acceptance capacity : 1.3 kW
Max. operating pressure : 25 MPa (250 bar)
Max. volume ow : 2.9 l/min
Volume ow at 12 MPa
(120 bar) with water : 2.3 l/min
Max. temperature of the
coating material : 43 °C
Max. viscosity : 15,000 mPas
Empty weight pump : 29.5 kg
Hydraulic oil lling
quantity : 0.65 liter
Max. vibration at the spraygun: lower than 2.5 m/s
Max. sound pressure level: 74 dB (A)*
*Place of measurement: 1 m distance from unit and 1.60
m above oor, 12 Mpa (120 bar) operating pressure,
reverberant oor
Max. volume ow : 2.2 l/min
Volume ow at 12 MPa
(120 bar) with water : 1.8 l/min
Max. temperature of the
coating material : 43 °C
Max. viscosity : 15,000 mPas
Empty weight pump : 28 kg
Hydraulic oil lling
quantity : 0.65 liter
Max. vibration at the spraygun: lower than 2.5 m/s
Max. sound pressure level: 74 dB (A)*
*Place of measurement: 1 m distance from unit and 1.60
m above oor, 12 Mpa (120 bar) operating pressure,
reverberant oor
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