DeVilbiss JGA Series User manual

Operation Manual

JGA – Pressure Feed Spraygun

EP 2 - 8

SB-E-2-251 ISS.05

EC Declaration of Conformity

We: ITW Finishing UK, Ringwood Rd, Bournemouth, Dorset, BH11 9LH, UK, as the

manufacturer of the Spraygun model JGA, 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/EEC 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.

Model Part Number

Example: JGA-558FWH-797

Fluid Tip Size

Aircap No

Gun Number

Operation Manual

JGA – Pressure Feed Spraygun

Important

Read and follow all instructions and Safety Precautions before using

this equipment

Description

The JGA Pressure Feed Spraygun Kit is approved 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 most solvent based coating materials.

Nozzles and Needles are manufactured in Stainless Steel. 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.

ITW Finishing Systems and Products reserve the right to modify equipment specification without prior notice.

B. Holt, General Manager

30th June 2003

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 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.

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.

Parts List

Ref. No Description Part Number Qty

1 Air Cap/Retaining ring See Chart 2 1

1a Spring Clip - Kit of 5 JGA-156-K5 1

+2 Nozzle See Chart 3 1

3 Baffle + Seal JGD-402-K 1

+3a Baffle seal—Kit of 5 GTI-33-K5 1

+4 Spring Adjusted Needle Packing GTI-445-K2 1

5 Spreader Valve GTI-405-K 1

6 Stud and Screw - Kit of 5 GTI-408-K5 1

+7 Needle See Chart 3 1

+8 Spring - Kit of 5 GTI-409-K5 1

9 Bushing JGA-17 1

10 Needle Adjusting Screw GTI-414-K 1

11 Valve Assembly JGK-449 1

12 Trigger GTI-108 1

13 Connector JGA-158 1

14 Airflow Valve GTI-415-K 1

15 Lock Nut - Kit of 5 JGA-51-K5 1

16 Seal 23165-001 1

17 Fluid Inlet Connector and seal Kit JGA-159-K 1

18 Seal + Pin kit ( + SST-8434-K5) GTI-428-K5 2

19 Circlip - Kit of 5 2

20 Circlip - Kit of 5 25746-007-K5 1

+21 Seal - Kit of 5 JGS-72-K5 2

22 Air valve stem assembly 1

23 Spring JGV-262-K5 1

+ - Parts included in service Kit KK-4502 (see accessories)

No Order No.

0.7

1.1

1.2

1.4

1.6

1.8

2.0

2.2

2.8 Air-

flow

Pressure

bar

30+ AV-4239-30 999301 3.0

43 AV-4239-43 99307 3.0

62 MB-4039-62 9449 3.0

64 MB-4039-64 9432 3.0

78 MB-4039-78 99457 3.0

80 MB-4039-80 9311 3.0

186 AV-4239-186 99344 3.0

704 AV-4239-704 9418 3.0

765 AV-4239-765 999476 3.0

777 AV-4239-777 99462 3.0

797 AV-4239-797 9999463 3.0

Aircap number and Nozzle size combinationsChart 2

Nozzle and Needle combinations

High Grade Stainless Steel (H) High Grade Stainless

Steel—Soft Seat Nitralloy (N)

Nozzle

size Nozzle Order No. Needle Order No. Nozzle

Order No. Needle Order No. Nozzle Order

No. Needle Order No.

2.8 AV-645-AC JGA-421-C-K —— —— AV-611-AC JGA-402-NAC-K

2.2 AV-645-D JGA-421-DEX-K AV-651-D JGA-421-DEX-K AV-611-D JGA-402-NADEX-K

2.0 —— —— —— —— AV-611-DE JGA-402-NADEEE-K

1.8 —— —— —— —— AV-611-EE JGA-402-NADEEE-K

1.8 AV-645-E JGA-421-E-K AV-651-E JGA-421-E-K —— ——

1.8 AV-645-EX JGA-421-DEX-K —— ——

1.6 AV-645-FW JGA-421-FW-K —— ——

1.4 AV-645-FF JGA-421-FFK AV-651-FF JGA-421-FZ-K AV-611-FF JGA-402-NAFF-K

1.2 AV-645-FZ JGA-421-FZ-K AV-651-FZ JGA-421-FZ-K AV-611-FZ JGA-402-NAFZ-K

1.1 AV-645-FX JGA-421-FX-K AV-651-FX JGA-421-FZ-K —— ——

0.7 AV-645-G JGA-421-G-K AV-651-G JGA-421-G-K —— ——

Chart 3

Specification

Air supply connection -

Universal

1/4 BSP/NPS

Fluid Supply Connection -

Universal

3/8 BSP/NPS

Maximum static inlet pressure -

P1 = 9 bar (130 psi)

Maximum static fluid pressure -

P2 = 14 bar (200psi)

Gun Weight - 695 g

Maximum Service temperature - 40°C

Materials of Construction

Gun body- Polished Aluminium

Nozzle - See chart 3

Needle - See chart 3

Installation

Operation

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 106Ωis recommended. The air

supply should be filtered and

regulated.

2. Attach fluid supply hose to the Fluid

Inlet connector (17).

Mix, prepare and filter the coating

material to be sprayed to the

manufacturer’s instructions. Adjust the

spray gun controls, air and coating

material pressures before filling the cup

or turning on the material supply.

1. Needle adjustment. Fully open

needle adjusting screw (10) by turning

counter-clockwise until the first thread

shows.

2. Fan pattern adjustment. Turn

adjusting screw (5) to fully open

position, by turning counter-clockwise.

3. Air control valve. Open air adjusting

screw (14) fully by turning counter-

clockwise (JGA-558 models only).

4. Air supply pressure. Regulate to 3.0

bar (43 - 45 lbf/in²).

5. Pressure feed coating material

supply. Regulate pressure to 0.5 bar

(7 lbf/in²).

6. Turn on coating material and air

supplies.

7. Test spray. If the finish is too dry or

application too slow, reduce air

pressure or increase coating material

supply pressure. If the finish is too

wet, reduce the coating material

supply pressure, or turn the needle

adjusting screw (10) fully clockwise

then gradually open until the desired

pattern is achieved.

8. If the atomisation is too coarse

increase the air pressure, if too fine,

reduce the air supply pressure or turn

air control valve (14) gradually

clockwise.

9. NOTE: The spray width can be

reduced from fan to round by turning

fan adjusting screw (5) clockwise.

10. Using the spray gun. Hold the gun

perpendicular to the spray surface

always. Arcing or tilting the gun will

result in an uneven deposit of coating

material. The recommended spray

distance is 150- 200 mm (6" - 8").

Spray the corners and edges first.

Overlap each stroke 50% as you coat

the area. Trigger just before the edge

of the surface to be sprayed. Move

the gun at a constant speed across

the surface and release the trigger.

Repeat the same method on the

return stroke.

11. To prevent accidental discharge of

coating material when the gun is not

in use, always turn off and release air

and fluid pressure.

1. Turn off air and relieve pressure in

the supply lines, or if using QD

system, disconnect from airline.

2. Release Cup and raise the tube out of

the material. Trigger the Gun and

allow material to drain back into the

cup.

3. Dispose of the surplus material and

clean the cup.

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

(7) and air valve (11) should be oiled

each day.

Preventative Maintenance

Replacement of Parts

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 (11) – Remove Trigger, parts

6 and 12. Unscrew valve assembly. Re-

assemble, fitting spring to valve head

before fitting valve.

Spreader valve (5) – Caution: always

ensure that the valve is in the fully open

position by turning screw fully counter-

clockwise before fitting to body.

Accessories

Spanner – order SPN-5

Cleaning Brush – order 4900-5-1-K3

Service Kit – order KK-4502 add nozzle size as required

(i.e. KK-4502-FF-H)

Seal Kit - order KK-4558. Contains 3a, 4, 18, 19, 21

Pressure gauge Attachment – order GA-515

Gun Mounted Regulator – order DVR-501

Lubricant - order GL-1-K10

ITW Finishing Systems and Products

Ringwood Road,

Bournemouth,

BH11 9LH,

England.

Tel. No. (01202) 571111

Telefax No. (01202) 581940,

Website address http://www.itweuropeanfinishing.com

ITW Automotive Finishing UK

Anchorbrook Industrial Estate

Lockside

Aldridge,

Walsall,

UK.

Tel. No. (01922) 423700

Telefax No. (01922) 423705,

Website address http://www.itweuropeanfinishing.com

ITW Finishing Systems and Products is a Division of ITW Ltd. Reg. Office:

Admiral House,

St Leonard’s Road,

Windsor,

Berkshire,

SL4 3BL,

Registered in England: No 559693 Vat No 619 5461 24

ITW Oberflächentechnik GmbH & Co. KG

Justus-von-Liebig-Straße 31

63128 Dietzenbach

Tel (060 74) 403-1

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. (33) 475-75-27-00

Télex 345 719F DVILBIS

Téléfax: (33) 475-75-27-99

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