DeVilbiss JGA User manual

1 ©ITW Ltd 2001

Operation Manual

JGA – Suction Feed Spraygun

EP 2 - 8

SB-E-2-252-I

2©ITW Ltd 2001

Operation Manual

JGA – Suction Feed Spraygun

Important

Read and follow all instructions and Safety Precautions before using this

equipment

Description

The JGA Suction Feed Spraygun Kit is suitable for use with most solvent

based coating materials. Nozzles and Needles are available in Stainless

Steel.

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.

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.

B.Holt,General Manager

Model Part Number

Example: JGA-614FWH-186B

Fluid Tip Size

Aircap No

Kit Number

Nozzle Material

H = 303 Stainless

3 ©ITW Ltd 2001

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

4©ITW Ltd 2001

Parts List

Ref. No Description Part Number Qty

1 Air Cap/Retaining ring See Chart 1 1

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

+*2 Nozzle AV-645-** 1

3 Baffle & Seal JGD-402-K 1

Baffle seal - Kit of 5 GTI-33-K5 1

+4 Packing GTI-439-K2 1

5 Spreader Valve GTI-405-K 1

6 Stud and Screw GTI-408-K5 1

+7 Needle See Chart 2 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 JGS-108-1 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 JGA-159-K 1

18 Fluid Tube KR-456-B 1

19 Yoke KR-77-1 1

20 Washer - kit of 5 KS-48-K5 2

21 Cam KR-130 1

22 Washer - Kit of 5 KR-40-K5 1

23 Lid Gasket - kit of 3 KR-11-K3 1

24 Nut - kit of 5 KR-94-K5 1

25 Drip free diaphragm—kit of 5 KR-115-K5 1

26 Cup KR-466-K 1

27 Cup lid assembly KR-4001-B 1

28 Cup and Lid assembly Kit KR-566-1-B 1

29 Seal + Pin Kit ( + SST-8434-K5) GTI-428-K5 2

30 Circlip - Kit of 5 SST-8434-K5 2

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

+32 Seal - Kit of 5 JGS-72-K5 2

+3a

33 Spanner SPN-5 1

34 Air valve stem assembly JGS-431-1 1

35 Spring JGV-262-K5 1

* - ** Denotes Nozzle Size - see chart 1 below for available sizes

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

5 ©ITW Ltd 2001

Specification

Air supply connection - Universal 1/4 BSP and NPS

Fluid Supply Connection - Universal 3/8 BSP and NPS

Maximum static inlet pressure - P1= 9 bar (130 psi)

Maximum static fluid pressure - P1= 14 bar (203 psi)

Gun Weight - 695 g

Cup Weight - 460g

Materials of Construction

Gun body - Polished Aluminium

Nozzle - Stainless Steel

Needle - Stainless Steel

Cup - Aluminium with Brass Nickel plated pins

Lid Assembly - Aluminium, Brass and Steel Nickel plated

Cup Lid Gasket - Polyethylene

Diaphragm - Polyethylene

Chart 1. Aircap and Nozzle Size combinations

Aircap

Aircap Part

Number

1.6

1.4

1.8

30 AV-4239-30 X X X

43 AV-4239-43 X X X

80 MB-4039-80 X X X

186 AV-4239-186 X X X

Nozzle

Size

Needle Order

Number

FW JGA-421-FF

FF JGA-421-FF

EX JGA-421-EX

Chart 2. Nozzle and Needle Combinations

Nozzle Order

Number

AV-645 FW

AV-645-FF

AV-645-EX

6©ITW Ltd 2001

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 air supply should be

filtered and regulated.

2. Attach the Cup Lid assembly (27)

to the Fluid Inlet connector (17).

3. Position the Yoke at right angles

to the Gun with the Cam lever to

the front (see picture). Make sure

the vent hole in the lid is

positioned under the Yoke and

the hole in the diaphragm is 180°

to the Lid vent hole.

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 to the Lid assembly.

4. Turn needle adjusting screw (10)

on the spraygun clockwise to

prevent movement.

5. Turn pattern valve (5) counter-

clockwise to fully open

6. Adjust inlet air pressure to give

3.5 bar (50psi) 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 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.

9. The pattern size can be reduced

by turning adjusting valve (5)

clockwise.

10.Hold gun perpendicular to surface

being sprayed. Arcing or tilting

may result in uneven coating.

11.The recommended spray distance

is 150-200 mm (6”-8”).

12.Spray edges first. Overlap each

stroke a minimum of 50%. Move

gun at a constant speed.

13.Always turn off air supply and

relieve pressure when gun is not

in use.

Air Flow Valve (14)

1. If the airflow valve (14) is fitted

this can be used to reduce the

inlet pressure through the gun.

Screw the Adjusting Knob in to

reduce pressure.

7 ©ITW Ltd 2001

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

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, 29, 30, 32

Pressure gauge Attachment – order GA-515

Gun Mounted Regulator – order DVR-501

Lubricant - order GL-1-K10

8©ITW Ltd 2001

January 03

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 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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