DeVilbiss EGA-503 Service Manual
SERVICE MANUAL
*Repair Kit No. KK-5044
(190681)
EGA-503 SPRAY GUN
(SPRAY PISTOL)
Important: Before using this equipment,
read all safety precautions and instructions.
Keep for future use.
DESCRIPTION
The EGA-503 is an external mix, touch-up
gun. The gun has a long needle taper making detail work easy. The forefinger trigger
gives added control for delicate application. Can be used for touch-up, shading,
edging or any type of precision painting.
Use as either suction or pressure feed
application.
Note
Wetted surfaces are stainless steel
and aluminum. Please see Warning on Page 2 regarding explosion
hazard.
SPECIFICATIONS
Air Inlet: 1/4" NPS (M)
Fluid Inlet: 1/4" NPS (M)
Type Feed: Suction or Pressure
Wetted Parts: Aluminum & Stainless Steel
P1 = Maximum Air Pressure 100 PSI (7 bar)
P2 = Maximum Fluid Pressure 10 PSI (.68 bar)
OPERATION
Prepare and strain material according to the
paint manufacturer's instructions. Attach
container to fluid inlet and tighten. Adjust
incoming air pressure to gun to achieve
desired spray results.
Note
To minimize overspray, only use as
much pressure as required to atomize material.
PREVENTIVE MAINTENANCE
To clean fluid passages, remove excess
material at source, then flush with a suitable solvent.
To clean air cap and fluid tip, brush with a
stiff bristle brush. If necessary, use a broom
straw or toothpick. Never use a wire or hard
instrument. This may scratch or burr holes
causing a distorted spray pattern.
Note
Worn parts can cause fluid leakage.
When replacing fluid tip or fluid
needle, replace both at the same
time. Lapped sets are available.
Also replace the fluid tip gasket and
needle packing at this time.
To prevent damage to the fluid tip or
fluid needle, be sure to either 1) push
the trigger and hold while tightening
the fluid tip or 2) remove the fluid
needle adjusting screw to relieve
spring pressure.
*Government NSN No. 4940-01-182-6975
= KK-5044
LUBRICATION
For best results, lubricate the points indicated in Figure 1 daily using Gun Lube
SSL-10.
A. Trigger points
B. Packings
C. Adjusting valves
D. Needle/Air valve springs
(occasionally)
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Figure 1
A
B
C
D
SAFETY PRECAUTIONS
This manual contains information that is important for you to know and understand. This information relates to USER SAFETY and
PREVENTING EQUIPMENT PROBLEMS. To help you recognize this information, we use the following symbols. Please pay particular
attention to these sections.
NOTE
Important safety information – a hazard
that may cause serious injury or loss of
life.
Important information that tells how to prevent damage to equipment, or how to avoid
a situation that may cause minor injury.
CA PROP
Information that you should pay special
attention to.
65
PROP 65 WARNING
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
The following hazards may occur during the normal use of this equipment. Please read the following chart.
CAUSE SAFEGUARDSHAZARD
Fire
Solvents and coatings can be highly
flammable or combustible, especially
when sprayed.
1. Adequate exhaust must be provided to keep the
air free of accumulations of flammable vapors.
2. Smoking must never be allowed in the spray area.
3. Fire extinguishing equipment must be present in
the spray area.
4. Static discharges must be prevented. Ground
(earth) all conductive objects in the spray
area, such as a cleaning solvent bucket, fire
extinguisher, etc.
5. When using solvents for cleaning:
• Those used for equipment flushing must have
a flash point equal to or higher than that of the
coating.
• Those used for general cleaning must
have flash points above 100°F (37.8°C).
Inhaling Toxic Substances
Explosion Hazard –
Incompatible Materials
Certain materials may be harmful if
inhaled or if there is contact with the
skin.
Halogenated hydrocarbon solvents,
for example" methylene chloride and
1, 1, 1, - Trichloroethane, are not
chemically compatible with the
aluminum that might be used in many
system components. The chemical
reaction caused by these solvents
reacting with aluminum can become
violent and lead to an equipment
explosion.
1. Follow the requirements of the Material
Safety Data Sheet supplied by your coating
manufacturer.
2. Adequate exhaust must be provided to keep the
air free of accumulations of toxic materials.
3. Use a mask or respirator whenever there is a
chance of inhaling sprayed materials. The mask
must be compatible with the material being
sprayed and its concentration.
This spray gun (spray pistol) has aluminum
passages and cannot be used with these solvents.
Aluminum is also widely used in other spray
application equipment – such as material pumps,
regulators, valves, etc. Check all other equipment
items before use. Read the label or data sheet for
the material you intend to spray. If in doubt as to
whether or not a coating or cleaning material is
compatible, contact your material supplier.
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SAFETY PRECAUTIONS (Continued)
CAUSE SAFEGUARDSHAZARD
General Safety
Solvent Spray
Misuse:
• All spray guns (spray pistols) project particles at high velocity and must never be aimed at any part of the body.
• Never exceed the recommended safe working pressures for any of the equipment used.
• The use of non-recommended or non-original accessories or spare parts may create hazardous conditions.
• Before dismantling the equipment for cleaning or maintenance, all pressures, air and fluid, must be isolated and released.
The disposal of waste materials must be carried out in an approved manner. Burning may generate toxic fumes. The removal or
waste solvents and coating materials should be carried out by an authorized local waste disposal service.
Improper operation or maintenance of
equipment.
During cleaning and flushing, solvents
can be forcefully expelled from fluid
and air passages. Some solvents can
cause eye injury.
Operators should be given adequate training in
the safe use and maintenance of the equipment
(in accordance with the requirements of NFPA-33,
Chapter 15 in U.S.). Users must comply with all
local and national codes of practice and insurance
company requirements governing ventilation,
fire precautions, operation, maintenance and
housekeeping (in the U.S., these are OSHA Sections
1910.94 and 1910.107 and NFPA-33).
Wear eye protection.
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