JGX-502 Spray Gun
Operation Manual
Important：Read and follow all instructions and SAFETY PRECAUTIONS before using this equipment

Description
The JGX-502 Spray Gun is a conventional air spray gun, patterned after the JGA series, whose functions are similar tostandard air spray gun models. The gun is available in three types: gravity feed, suction feed, and pressure feed, in order tocover the widest range of applications.
With all areas of the fluid passages made from stainless steel, the JGX-502 can be used with a wide range of paints, with the
only exception being those of a highly corrosive and/or abrasive nature. The use of such materials will require thoroughcleaning and frequent part replacement.
Any questions regarding the operation of the JGX Spray Gun should be directed to us or our distributors BEFORE use.

MODELS
JGX-502 - Air Cap No. - Fluid Tip Size – Type of Feed(Ex.)： JGX-502-143-FF-GThis represents a gun with a number 143 Aircap, a Size FF Fluid Tip, and set up for Gravity Feed.

SPECIFICATIONS
Air and Fluid Inlet Threads：
FluidSuction/Pressure Feed
PF3/8 Male, standard
PF1/4 Male, Optional

Air Inlet

PF1/4

WeightSuction/Pressure Feed

440g

OPERATION
Before using the gun, the needle packing, which is shipped loose to avoid binding, should be adjusted.
The packing gland (Part#7) should be gradually screwed clockwise while triggering the gun up to the point where the needle
does not smoothly return to the closed-position. At this point the packing gland should be slightly loosened by screwing it incounter-clockwise so that needle moves freely.
Adjust the atomizing air pressure to the lowest level possible and commensurate with proper atomization quality desired, tominimize overspray and maximize paint transfer efficiency.
The spray gun should be used at all times perpendicular to the surface to be coated at a distance of 150-200mm.

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Maintenance
The gun should be cleaned and lubricated daily to maintain daily to maintain its optimum performance. Clean the paintpassages thoroughly by spraying solvents through the gun after use.
The gun body should never be soaked in the solvent for cleaning. Exterior surface should only be wiped with solvent
dampened rags.
The air caps should be detached from the gun and soaked in the solvent.
Use toothpicks to remove any paint build up from the aircap holes. NEVER use metal objects to clean the aircaps in order toavoid damage to the fine holes, which will cause the spray pattern to become distorted.
A drop of lubricant should be applied regularly to the trigger bearing stud (#25), the stem of the air valve assembly(#21), andthe needle packing gland (#7). For optimum results use SSL-10 Spray Gun Oil.
The Needle Spring (#11) and the Air Valve Spring (#22) should be lightly greased. Do not lubricate or grease excessively inorder to avoid clogging in the air passages.

REPLACEMENT OF PARTS
A wrench (JGX-34) is provided with the gun.
When replacing the fluid tips, ensure that the Fluid Needle Adjustment Screw is moved, and also ensure that the Spreader
Valve is in the fully open (counterclockwise) position.
Whenever the Fluid Inlet Nipple (#23) or the Air Inlet Nipple (#28) are replaced, a sealant material such as Loctite 242, should
be applied to the thread before inserting it into the gun body. The same sealant should also be used on the body thread of theSpreader Valve (#13) and the Cheater Valve (#27).
Chart 1 : Aircap-Fluid Tip Combination
AircapFluid Tip Size

No. on CAP

CodePart No.

Gun Type

GY

103
146
165

803737803739803740JGX-3-103
JGX-3-143
JGX-3-165

S,GS,GP

V

FX

FF

EX

V
V

V
V

V

Chart 2 :Selection of the Fluid Tip and the Needle
Fluid Tips

Fluid Needles

No. on CAP

Size(mm)

CodePart No.

CodePart No.

GY
FX
FX
FF
FF
EX

0.8
1.1
1.1
1.4
1.4
1.8

803775803786803747803787803748803749JGX-4-GY
JGX-401-FX
JGX-4-FX
JGX-401-FF
JGX-4-FF
JGX-4-EX

803750803751803751803752803752803753

JGX-41-GX
JGX-41-FX
JGX-41-FX
JGX-41-FF
JGX-41-FF
JGX-41-EX

Gun Type

S,G
G,P
S
G,P
S
G,S

Notice : The fluid tip of Suction Feed gun and GY Tip (0.8m/m) is not with soft-seat.
Chart 3 :Fluid Inlet Description
Paint Supply

ThreadCodePart No.

Remarks

S,PS,P
G

PF3/8
PF1/4
PF1/4

803767803768803769

JGX-1
JGX-35JGX-2-----optional------2

PARTS LIST
#CodePart No.

1803736

JGX-5803735

Description

pcs#CodePart No.

Description

pcs

Retaining Ring

113803760

JGX-44

Spreader Valve Assy.

1

JGX-6

Retaining Ring, brass(Optional)

117803764

JGX-43

Air Valve Assy.

12

See Chart1

Air Cap

119*----------Packing

13

See Chart2

Fluid Tip

120*

-----

-----O-Ring

1803778

JGX-25

Spring1

See Chart3

Fluid Inlet Nipple

14803741

JGX-7

Baffle1225*803783

JGX-8-K5Gasket (a set of 5 pcs.)

123

6*803855

JGV-463

Needle Packing (2piece)124803916

JGS-108-1

Trigger

17803784

JGX-11-K3

Packing Gland (a set of 3pcs.)

125803567

JGX-45-K5

Bearing Stud (a set of 5pcs.)

18*----------Gasket

126*805281

JGX-46-K10

Circlip (a set of 10pcs.)

19803745

JGX-12

Bushing

127803771

JGX-42Cheater Valve Assy.

1See Chart2

Fluid Needle

128803772

JGX-30Air Inlet Nipple

129803773

JGX-34Wrench

1803733

JGX-101

Repair Kit

11011803785

JGX-14-K3

Needle Spring (a set of 3pcs.)

112803759

JGX-13Adjusting Screw

1* JGX-101 Repair Kit includes maintenance parts marked.

ACCESSORIESPart No.

Description

Part No.

TLC-555

1 Suction Cup (with PTFE Coated Inner Lining)

HD-505-W

5 Gun & Hose Cleaner

KG-400400cc Side Cup with Stand (Gravity Feed)

JGX-101

Repair Kit

KG-400-T
KB-II
KR-470-1

400cc Side Cup with Stand (with PTFE Coated
SSL-10Inner Lining, Gravity Feed)
HAF-507
KB-555 2 Pressure Feed Remote Cup
700cc Suction Cup Assembly

Description

Spray Gun Lubricant. Silicone-free,
Non-petroleum productDisposable Air Line Filter

DIVISIONRansburg Japan KK
HP http://www.carlisleft.co.jps.
®DEVILBISS is a registered trademark of Carlisle Fluid Technologie®Jupiter is a registered trademark of CFT Ransburg Japan KK.

©2017 Carlisle Fluid Technologies.
2017-07- JGX-502

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