DeVilbiss GTI User manual

1 © ITW Ltd 2000
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OPERATION MANUAL
GTi —Gravity Spraygun

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© ITW Ltd 2000
Operation Manual
GTi – Gravity Spraygun
Important
Read and follow all instructions and Safety Precautions before using this
equipment
Description
This product is suitable for use with both waterbased and solvent based
coating materials. The design uses EPA compliant atomising technology to
reduce overspray and improve coating efficiency.
Important: These guns are not designed for use with highly corrosive and/
or abrasive materials and if used with such materials it must be expected
that the need for cleaning and/or replacement of parts will be increased. If
there is any doubt regarding the suitability of a specific material contact
your local Distributor or ITW Finishing direct.
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Declaration of Conformity
We, ITW Finishing UK, Ringwood Road Bournemouth Dorset England
declare under our sole responsibility that this product is in conformity with BS
EN 292: parts 1 and 2 :1991 and BS EN 1953:1999, following the provisions
of the Machinery Directive 89/392/EEC. This product also complies with the
requirements of the EPA guidelines, PG6/34. Transfer efficiency certificates
are available on request.
B.Holt,General Manager
Model Part Number
Example: GTI-G110B-14
Aircap Fluid nozzle size
(14 = 1,4 mm)
Gunbody Finish
M= Multi Colour (colours may vary), B= Blue Anodised

3 © ITW Ltd 2000
SAFETY WARNINGS
Fire and explosion
Solvents and coating materials
can be highly flammable or
combustible when sprayed. ALWAYS
refer to the coating material suppliers
instructions and COSHH sheets
before using this equipment
Users must comply with all local
and national codes of practice and
insurance company requirements
governing ventilation, fire precautions,
operation and house-keeping of working
areas
This equipment, as supplied, is
NOT suitable for use with
Halogenated Hydrocarbons.
Static Electricity can be generated by
fluid and/or air passing though hoses. To
prevent such a risk, earth continuity to
the spray equipment and the object
being sprayed should be maintained.
Personal Protective
Equipment
Toxic vapours – When sprayed,
certain materials may be
poisonous, create irritation or be
otherwise harmful to health.
Always read all labels and safety data
sheets for the material before spraying
and follow any recommendations. If In
Doubt, Contact Your Material Supplier
The use of respiratory protective
equipment is recommended at all
times. The type of equipment
must be compatible with the
material being sprayed
Always wear eye protection when
spraying or cleaning the spraygun
Gloves must be worn when
spraying or cleaning the
equipment
Training – Personnel should be given
adequate training in the safe use of
spraying equipment.
Misuse
Never aim a spraygun at any part of the
body
Never exceed the max. recommended
safe working pressure for the equipment
The fitting of non-recommended or non-
original spares may create hazards
Before cleaning or maintenance, all
pressure must be isolated and relieved
from the equipment
The product should be cleaned using a
gun washing machine. However, this
equipment should not be left inside gun
washing machines for prolonged periods
of time.
Noise Levels
The A-weighted sound level of
sprayguns may exceed 85 dB
(A) depending on the set-up
being used. Details of actual
noise levels are available on request. It is
recommended that ear protection is worn
at all times when spraying
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© ITW Ltd 2000
* - * Denotes Aircap Number - Available Aircaps No’s 105 and 110
** - ** Denotes Fluid Tip Size—Available Sizes;
GTI-213 0.85, 1.0, 1.1, 1.2, 1.3,1.4,1.5 mm
GTI-214 1.6, 1.8, 2.0 and 2.2 mm
+ - Parts included in service Kit (see accessories)
Parts List
Ref. No Description Part Number Qty
*1 Air Cap/Retaining ring GTI-407-* 1
1a Spring Clip JGA-156-K5 1
+**2 Nozzle (up to 1.5 mm) GTI-213-**-K 1
Nozzle (1.6 mm to 2.2 mm) GTI-214-**-K 1
Baffle & Seal GTI-425-K 1
Baffle Seal - Kit of 5 GTI-33-K5 1
+4 Packing GTI-439-K2 1
5 Spreader Valve GTI-404-K 1
6 Stud and Screw GTI-408-K5 1
+7 Needle (for GTI-214 Tip) GTI-420-K 1
Needle (for GTI-213 Tip) GTI-413-K 1
+8 Spring and Pad GTI-409-K5 1
9 Bushing GTI-402-K 1
9a Seal kit of 5 JGS-72-K5 1
11 Valve Assembly JGK-449 1
12 Trigger GTI-108 1
13 Connector JGA-158 1
14 Gun Hook GFG-6 1
15 Airflow Valve GTI-415-K 1
16 1/2 Ltr Gravity Cup Kit GFC-501 1
17 Cup Lid GFC-402 1
18 Drip Check Lid kit of 5 GFC-2-K5 1
19 Filter KGP-5 1
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20 Circlip 25746-007-K5 1
21 Circlip SST-8434-K5 2
22 Seal & Pin Kit ( + SST-8434-K5) GTI-428-K5 2
10 Needle Adjusting Screw GTI-414-K 1
23 Washer GFC-17-K5 1
24 Air valve stem assembly JGS-431-1 1
25 Spring JGV-262-K5 1

5 © ITW Ltd 2000
Specification
Air supply connection - Universal
1/4 BSP and NPS
Maximum static inlet pressure - P1= 9 bar (130 psi)
Nominal gun inlet pressure with gun triggered - 2 bar (29 psi)
Gun Weight - 580 g
Materials of Construction
Gun body - Anodised Aluminium
Nozzle - Stainless steel
Needle - Stainless Steel
Cup - Acetal and Stainless Steel
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© ITW Ltd 2000
Installation
Important: To ensure that this
equipment reaches you in first class
condition, protective coatings have
been use. Flush the equipment
through with a suitable solvent
before use.
1. Attach air hose to connector (13).
Recommended hose size 8 mm
bore.
2. Air supply should be filtered and
regulated.
1. Turn off air supply and relieve
pressure in the airline, or if using
QD system, disconnect from
airline.
2. Empty coating material into a
suitable container and clean,
preferably in a gun wash
machine.
3. Remove air cap and clean. If any
of the holes in the cap are
blocked with coating material use
a toothpick to clean. Never use
metal wire which could damage
the cap and produce distorted
spray patterns
4. Ensure the tip of the nozzle is
clean and free from damage.
Build up of dried paint can distort
the spray pattern.
5. Lubrication – stud/screw (6),
needle (7) and air valve (11)
should be oiled each day.
Preventative Maintenance
Operation
1. Mix coating material to
manufacturers instructions
2. Turn needle adjusting screw (10)
counter-clockwise until first thread
shows
3. Turn pattern valve (5) counter-
clockwise to fully open
4. Adjust inlet air pressure to give 2
bar (29psi) at the gun inlet with
the gun triggered. (pressure
gauge attachment shown under
Accessories is recommended for
this)
5. Test spray. If the finish is too dry
reduce airflow by reducing inlet
pressure. If finish is too wet
reduce fluid flow by turning needle
screw (10) clockwise. If
atomisation is too coarse,
increase inlet air pressure. If too
fine reduce inlet pressure.
6. The pattern size can be reduced
by adjusting valve (5)
7. Hold gun perpendicular to surface
being sprayed. Arcing or tilting
may result in uneven coating.
8. The recommended spray distance
is 150-200 mm (6”-8”).
9. Spray edges first. Overlap each
stroke a minimum of 50%. Move
gun at a constant speed.
10.Always turn off air supply and
relieve pressure when gun is not
in use.
Air Flow Valve (15)
1. If the airflow valve (15) is fitted
this can be used to reduce the
inlet pressure through the gun.
Screw the Adjusting Knob in to
reduce pressure.
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Nozzle (2) and Needle (7) –
Remove parts in the following order:
10, 8, 7, 1 and 2. Replace any worn
or damaged parts and re-assemble
in reverse order. Recommended
tightening torque for nozzle (2) 17-
20 Nm (150-180 lbf in)
Packing – Remove parts 10, 8, 7.
Unscrew cartridge (4). Fit new
cartridge finger tight. Re-assemble
parts 7, 8, and 10 and tighten
cartridge (4) with spanner sufficient
to seal but to allow free movement
of needle. Lubricate with gun oil.
Air valve – Remove parts 6 and 12.
Unscrew valve assembly. Re-
assemble fitting spring to valve head
Spreader valve – Caution: always
ensure that the valve is in the fully
open position by turning screw fully
counter-clockwise before fitting to
body.
Air cap / Nozzle Selection
Refer to coating material
manufacturers recommendations or
ITW Finishing UK Website:
www.itweuropeanfinishing.com
Replacement of Parts
Accessories
Spanner – order SPN-5
Cleaning Brush – order 4900-5-1-K3
Service Kit – order GTi-416 add nozzle size as required (i.e. GTi-416-14)
Pressure gauge Attachment – order GA-515
Gun Mounted Regulator – order DVR-501
Lubricant - order GL-1-K10
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© ITW Ltd 2000
January 03
ITW Finishing Systems and Products
Ringwood Road,
Bournemouth,
BH11 9LH,
England.
Tel. No. [phone]
Telefax No. [phone],
Website address http://www.itweuropeanfinishing.com
ITW Oberflächentechnik GmbH & Co. KG
Justus-von-Liebig-Straße 31
63128 Dietzenbach
Tel [phone]
Telefax: (060 74) 403300
Website address http://www.itw-finishing.de
ITW Surfaces Et Finitions
163-171 avenue des Auréats B.P. 1453
26014 VALENCE CEDEX FRANCE
Tél. [phone]
Télex 345 719F DVILBIS
Téléfax: (33) 475-75-27-99