DeVilbiss JGX-502 - User Manual

DEVILBISS
JGX-502
SPRAY GUN OPERATION MANUAL
SB-E-301-C
Description
The JGX-502 Spray Gun is a conventional air spray
gun, patterned after the JGA series, whose functions
are similar to standard air spray gun models. The gun
is available in three types:gravity feed, suction feed,
and pressure feed, in order to cover the widest range
of applications.
With all areas of the fluid passages made from stain-
less 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 thorough cleaning and
frequent part replacement.
Any questions regarding the operation of the JGX
Spray Gun should be directed to us or our distribu-tors
BEFORE use.
Types and Specifications
The JGX are specified when ordering as follows;
JGX-502
Aircap No. Tip Size
<Example> JGX-502-143-FF-G
Feed Type.
This represents a gun with a number 143 Aircap, a
Size FF Fluid Tip, and set up for Gravity Feed.
Operations
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 in counter-
clockwise so that the needle moves freely.
Adjust the atomizing air pressure to the lowest level
possible and commensurate with proper atomization
quality desired, to minimize overspray and maximize
paint transfer efficiency.
The spray gun should be used at all times perpen-
dicular to the surface to be coated at a distance of
150-200mm.
Maintenance
The gun should be cleaned and lubricated daily to
maintain its optimum performance. Clean the paint
passages 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 gnu 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 to avoid damage to the fine holes,
which will cause the spray pattern to become dis-
torted.
A drop of lubricant should be applied regularly to the
trigger bearing stud(#25), the stem of the air valve
assembly(#21), and the 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 in order 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 removed, and also en-
sure 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 the Spreader
Valve(#13)and the Cheater Valve(#27).
Specifications
Air and Fluid Inlet Threads:
Fluid:
Air Inlet:
Weight:
Suction/Pressure Feed
PF3/8 Male, standard
PF1/4 Male, Optional
PF1/4
Suction/Pressure Feed
440g
Accessory Items
• TLC-555 1 Litre Suction Cup(with Teflon* Coated
Inner Lining)
• KG-503-1 400cc Side Cup(Gravity Feed)
• KG-503-1 -T 400cc Side Cup(with Teflon* Coated Inner
Lining, Gravity Feed)
• KG-400 400cc Side Cup With Stand(Gravity Feed)
• KG-400-T 400cc Side Cup With Stand(With Teflon*
Coated Inner Lining, Gravity Feed)
• KB-II KB-555 2 Litre Pressure Feed Remote Cup
• KR-470-1 700cc Suction Cup Assembly
• HD-505 5 Litre Gun & Hose Cleaner
• JGX-101 Repair Kit
• SSL-10 Spray Gun Lubricant. Sylicone-free,
Non-petroleum product
• HAF-507 Disposable Air Line Filter
• Teflon, and Delrin are both the registered marks of
E.I. Du Pont de Nemours and Company.

Summary

Spray Gun Description

Spray Gun Types and Specifications

Spray Gun Operations

Needle Packing Adjustment

Adjust the needle packing gland clockwise until the needle returns smoothly to the closed-position.

Air Pressure Adjustment

Set atomizing air pressure to the lowest level for proper atomization and maximum paint transfer efficiency.

Spraying Technique

Use the spray gun perpendicular to the surface at a distance of 150-200mm for optimal results.

Spray Gun Maintenance

Daily Cleaning and Lubrication

Clean paint passages daily by spraying solvents and lubricate trigger bearing, air valve stem, and packing gland.

Aircap Cleaning

Use toothpicks to clean aircap holes, avoiding metal objects to prevent damage.

Spring Lubrication

Lightly grease needle and air valve springs; avoid excessive lubrication to prevent clogging.

Exterior Surface Cleaning

Wipe the exterior surface with solvent-dampened rags; do not soak the gun body.

Aircap Soaking

Detach air caps and soak them in solvent for thorough cleaning.

Replacement of Parts

Fluid Tip Replacement

Remove Fluid Needle Adjustment Screw and ensure Spreader Valve is fully open before replacing fluid tips.

Nipple Replacement and Sealant

Apply sealant (Loctite 242) to threads of Fluid/Air Inlet Nipples and Spreader/Cheater Valves when replacing.

Spray Gun Specifications

Air and Fluid Inlet Threads

Specifies thread types for fluid and air inlets: PF3/8 Male (standard) and PF1/4 Male (optional).

Weight

Specifies the weight of the suction/pressure feed model as 440g.

Accessory Items

Aircap-Fluid Tip Combination

Fluid Tip and Needle Selection

Fluid Inlet Description

JGX-502 Parts List

Contact Information

DeVilbiss JGX-502 Specifications

General

Fluid Nozzle Size	1.4mm
Recommended Air Pressure	40-60 psi
Material	Aluminum
Air Inlet Size	1/4 inch NPT
Maximum Fluid Delivery	10.0 oz/min