DeVilbiss SB-2-546 User Manual
Service Bulletin
SB-2-546
OPERATION MANUAL
ADVANCED-CONVENTIONAL GRAVITY FEED SPRAYGUN
English: Pages 2-9
MANUAL DE OPERACIÓN
COMPACT– PISTOLA PULVERIZADORA CONVENCIONAL
AVANZADO CON ALIMENTACIÓN POR GRAVEDAD
Español: Páginas 10-17
Page 2 SB-2-546
IMPORTANT: Read and follow all instructions and SAFETY PRECAUTIONS before
using this equipment.
DESCRIPTION
The Compact Gravity feed Spraygun Kit
complies to ATEX regulations 94/9/EC,
protection level; II 2 G X, Suitable for use
in Zones 1 and 2.
IMPORTANT: These Sprayguns are suit-
able for use with solvent and waterbased
materials. If there is any doubt regarding
the suitability of a specific material contact
your local Distributor or ITWIF direct.
EC DECLARATION OF CONFORMITY
We: ITW Finishing UK, Ringwood Rd,
Bournemouth, Dorset, BH11 9LH, UK, as
the manufacturer of the Spraygun model
Compact, declare, under our sole respon-
sibility, that the equipment to which this
document relates is in conformity with
the following standards or other normative documents:
BS EN 292-1 PARTS 1 & 2: 1991, BS EN
1953: 1999; and thereby conform to the
protection requirements of Council
Directive 98/37/EC relating to Machinery
Safety Directive, and; EN 13463-1:2001,
council Directive 94/9/EC relating to
Equipment and Protective Systems
intended for use in Potentially Explosive
Atmospheres protection level II 2 G X.
B. Holt, General Manager
30th June 2003
ITWIF reserve the right to modify equipment specification without prior notice.
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 through
hoses, by the spraying process and by cleaning non- conductive parts
with cloths. To prevent ignition sources from static discharges, earth
continuity must be maintained to the spraygun and other metallic
equipment used. It is essential to use conductive air and/or fluid hoses.
PERSONAL PROTECTIVE EQUIPMENT
Toxic vapors – 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.
OPERATING
Spray Equipment using high pressures may be subject to recoil forces.
Under certain circumstances, such forces could result in repetitive
strain injury to the operator.
Page 3SB-2-546
Patent No. 2372465 (GB)
MODEL PART NUMBER
Example: COM-G430-14-02
Aircap
Fluid nozzle size
(14 = 1.4 mm)
00 = No cup
02 = Gravity cup
Ref.
No. Description Part Number Qty. Options
1 Air Cap/Retaining ring COM-430 SP-100-430-K 1
+2 Nozzle SP-200S-**-K 1 14, 18, 22 e.g ** =14 =1.4 mm
+3 Separator SP-626-K5 5
+4 Packing GTI-445-K2 2
5 Spreader Valve SP-403-K 1
6 Stud and Screw GTI-408-K5 5
7 Needle Adjusting Screw SP-614-K 1
+8 Spring SP-622-K5 1
+9 Needle SP-300S-**-K 1 14, 18, 22 e.g ** =14 =1.4 mm
10 Airvalve housing & seal SP-612-K 1
+11 Spindle 1
12 Trigger SP-617-K 1
13 Connector SP-611-K 1
14 Plug SP-637 1
+16 Air Valve Service Kit SPK-101-K 1
17 Retaining Ring and Seals SPK-102-K 1
+18 Clip, Seal and Pin Kit GTI-428-K5 5
23 Air Valve assembly Tool 1
24 Spanner SPN-5 1
Spraygun Service Kit SPK-401-** 1 14, 18, 22 e.g ** =14 =1.4 mm
(parts included marked + )
PARTS LIST
Page 4 SB-2-546
INSTALLATION
Important: To ensure that this
equipment reaches you in first
class condition, protective
coatings have been used. Flush
the equipment through with a
suitable solvent before use.
1. Attach air hose to connector (13).
Recommended hose size 8 mm
bore. The hose must be conductive
and electrical bond from the
spraygun to earth should be checked
with an ohmeter. A resistance of less
than 106Ohms is recommended.
2. Air supply should be filtered and
regulated.
3. Attach Cup assembly (22) by
screwing into the Fluid Inlet of the
spraygun. Tighten with a wrench.
OPERATION
1. Mix coating material to manufacturers instructions.
2. Fill the cup with the required amount
of material. Fill to no more than
25mm (1") from the top of the cup.
DO NOT OVERFILL.
3. Attach Cup Lid.
4. Turn needle adjusting screw (7)
clockwise to prevent movement.
5. Turn spreader valve (5) counterclockwise to fully open.
6. Adjust inlet air pressure (For recommended figures see Specifications)
at the gun inlet with the gun triggered. (pressure gauge attachment
shown under Accessories is recommended for this).
7. Turn needle adjusting screw counter
clockwise until first thread shows.
8. Test spray. If the finish is too dry
reduce airflow by reducing air inlet
pressure or by the optional Airflow
Valve (14). Screw the Adjusting
Knob (14) in to reduce pressure.
9. If finish is too wet reduce fluid flow
by turning needle screw (7) clockwise. If atomization is too coarse,
increase inlet air pressure. If too fine
reduce inlet pressure.
10. The pattern size can be reduced by
turning adjusting valve (5) clockwise.
11. Hold gun perpendicular to surface
being sprayed. Arcing or tilting may
result in uneven coating.
12. The recommended spray distance is
150-200 mm (6"-8").
13. Spray edges first. Overlap each
stroke a minimum of 50%. Move gun
at a constant speed.
14. Always turn off air supply and
relieve pressure when gun is not in
use.
PREVENTATIVE MAINTENANCE
1. Turn off air and relieve pressure in
the supply lines, or if using QD
system, disconnect from airline.
2. Remove Cup Lid (20) and empty
coating material into a suitable
container. Clean the gun and cup,
preferably in a gun wash machine.
Clean the cup.
3. Check the breather hole in the Lid
and the Drip Check Lid is not
blocked.
4. Remove air cap (1) 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
5. Ensure the tip of the nozzle (2) is
clean and free from damage. Build
up of dried paint can distort the
spray pattern.
6. Lubrication – stud/screw (6), needle
(9) and air valve (11) should be oiled
each day.
REPLACEMENT OF PARTS
Nozzle (2) and Needle (9) – Remove parts
in the following order: 7, 8, 9, 1 and 2.
Replace any worn or damaged parts and
re-assemble in reverse order.
Recommended tightening torque for
nozzle (2) 9.5-12 Nm (80-100 lbf in).
Packing – Remove parts 7, 8, 9. Unscrew
cartridge (4). Fit new cartridge finger
tight. Re-assemble parts 9, 8, and 7 and
tighten cartridge (4) with spanner sufficient to seal but to allow free movement
of needle. Lubricate with gun oil.
Air Valve Seal Kit (16) – (Refer to photos
1 to 28 and fig 2)
Spreader valve (5) – Caution: always
ensure that the valve is in the fully open
position by turning screw fully counterclockwise before fitting to body.
SPECIFICATION
Air supply connection:
Universal 1/4" BSP and NPS
Maximum static Air inlet pressure:
P1= 12 bar (175 psi)
Nominal gun Air inlet pressure
with gun triggered:
3 bar (44 psi)
Maximum Service temperature: 40°C
Gun Weight: 412 g
MATERIALS OF CONSTRUCTION
Gun body: Anodized Aluminum
Nozzle: Stainless Steel
Needle: Stainless Steel
Fluid Inlet / Fluid Passages:
Anodized Aluminum
Trigger: Nickel Plated Steel
Page 5SB-2-546
1. Remove Adjusting Knob (7),
Spring (8), and Needle (9).
2. Loosen Housing (10). 3. Remove Housing (10) and
Airvalve Spring.
4. Remove Valve (11). 5. Using Service Tool SPN-7,
engage groove behind the
Valve Seat.
6. Remove Valve Seat.
7. Push out the Front Airvalve
Seal with a finger.
8. Turn the Gun upside down
and let the Seal fall out.
9. Fit New Front Seal to Service
Tool.
10. Fit new Seal to gunbody and
press firmly to ensure Seal is
engaged.
11. Fit New Valve Seat to
Service Tool. Groove must
face outwards.
Page 6 SB-2-546
12. Fit Valve Seat to Gunbody. 13. Remove Rear Airvalve Seal
from housing (10) with a
hooked instrument.
14. Fit new Seal to Service Tool.
15. Fit Seal to Housing (10). 16. Replace Valve (11). 17. Replace Valve Spring and
screw in Housing (10).
18. Tighten Housing. 19. Fit Needle (9). 20. Fit Spring (8) and Knob (7).
21. Adjust Needle Packing (4)
with Spanner sufficient to
seal but to allow free movement of needle. Lubricate
with gun oil.
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