Service Bulletin
SB-2-540
OPERATION MANUAL
TRANS-TECH® GRAVITY FEED SPRAYGUN
English: Pages 2-9
MANUAL DE OPERACIÓN
COMPACT– PISTOLA PULVERIZADORA POR GRAVEDAD TRANS-TECH®
Español: Páginas 10-17
Page 2 |
SB-2-540 |
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 suitable for use with both waterbased and solvent based coating materials. The design uses Devilbiss Trans-Tech® atomizing technology to reduce overspray and improve coating efficiency. 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 responsibility, 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 nonconductive 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.
SB-2-540 |
Page 3 |
Patent No. 2372465 (GB)
MODEL PART NUMBER |
PARTS LIST |
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Example: COM-G510G-14-02 |
Ref. |
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Aircap |
No. |
Description |
Part Number |
Qty. |
Options |
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1 |
Air Cap/Retaining ring COM-510 |
SP-100-510-K |
1 |
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Green anodized |
+2 |
Nozzle |
SP-200S-**-K |
1 |
14, 18, 22 e.g ** =14 =1.4 mm |
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+3 |
Separator |
SP-626-K5 |
5 |
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Fluid nozzle size |
+4 |
Packing |
GTI-445-K2 |
2 |
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5 |
Spreader Valve |
SP-403-K |
1 |
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(14 = 1.4 mm) |
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6 |
Stud and Screw |
GTI-408-K5 |
5 |
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00 = No cup |
7 |
Needle Adjusting Screw |
SP-614-K |
1 |
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+8 |
Spring |
SP-622-K5 |
1 |
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02 = Gravity cup |
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+9 |
Needle |
SP-300S-**-K |
1 |
14, 18, 22 e.g ** =14 =1.4 mm |
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10 |
Airvalve housing & seal |
SP-612-K |
1 |
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+11 |
Spindle |
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1 |
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12 |
Trigger |
SP-617-K |
1 |
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13 |
Connector |
SP-611-K |
1 |
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14 |
Plug |
SP-637 |
1 |
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+16 |
Air Valve Service Kit |
SPK-101-K |
1 |
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17 |
Retaining Ring and Seals |
SPK-102-K |
1 |
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+18 |
Clip, Seal and Pin Kit |
GTI-428-K5 |
5 |
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23 |
Air Valve assembly Tool |
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1 |
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24 |
Spanner |
SPN-5 |
1 |
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Spraygun Service Kit |
SPK-401-** |
1 |
14, 18, 22 e.g ** =14 =1.4 mm |
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(parts included marked + ) |
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SB-2-540 |
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:
2 bar (29 psi) 510 Trans-Tech Air Cap
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
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 106 Ohms 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.
SB-2-540 |
Page 5 |
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1.Remove Adjusting Knob (7), Spring (8), and Needle (9).
4.Remove Valve (11).
7.Push out the Front Airvalve Seal with a finger.
2.Loosen Housing (10).
5.Using Service Tool SPN-7, engage groove behind the Valve Seat.
8.Turn the Gun upside down and let the Seal fall out.
3.Remove Housing (10) and Airvalve Spring.
6.Remove Valve Seat.
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.
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SB-2-540 |
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12. Fit Valve Seat to Gunbody.
15. Fit Seal to Housing (10).
18. Tighten Housing.
13.Remove Rear Airvalve Seal from housing (10) with a hooked instrument.
16. Replace Valve (11).
19. Fit Needle (9).
14. Fit new Seal to Service Tool.
17.Replace Valve Spring and screw in Housing (10).
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.