Graco ProComp HVLP 3800 User manual

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2004, Graco Inc. is registered to I.S. EN ISO 9001
309907P
Instructions
HVLP 3800 ProComp™,
Huarun 3800 ProComp™, and
4900 ProComp™Turbine Sprayers
Models 246857, 249524, and 249590
6 psi (41 MPa, 0.4 bar) Maximum Working Pressure
Model 249768
8 psi (55 kPa, .5 bar) Maximum Working Pressure
Related Manuals:
309205 - HVLP Turbine Gun
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
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4900 HVLP ProComp
3800 HVLP ProComp

Table of Contents
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Manual Conventions . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General Information . . . . . . . . . . . . . . . . . . . . . . . . . 4
Component Identification . . . . . . . . . . . . . . . . . . . . 5
Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 20
Manual Conventions
The following are general Warnings related to the safe setup, use, maintenance and repair of this equipment. Addi-
tional, more specific warnings may be found throughout the text of this manual where applicable.
WARNING
This symbol alerts you to the possibility of serious injury
or death if you do not follow the instructions.
CAUTION
Alerts you to the possibility of damage or destruction
of equipment if you do not follow the instructions.

Warnings
309907P 3
Warnings
WARNINGS
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Use equipment only in well ventilated area.
• When flammable liquid is sprayed or used for flushing or cleaning, keep sprayer at least 20 feet (6 m)
away from explosive vapors.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.
• Ground equipment and conductive objects in work area. See Grounding instructions.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.
ELECTRIC SHOCK HAZARD
Improper grounding, setup, or usage of the system can cause electric shock.
• Turn off and disconnect power cord before servicing equipment.
• Use only grounded electrical outlets.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on sprayer and extension cords.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swal-
lowed.
• Read MSDS’s to know the specific hazards of the fluids you are using.
Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system com-
ponent. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings.
• Check equipment daily. Repair or replace worn or damaged parts immediately.
• Do not alter or modify equipment.
• For professional use only.
• Use equipment only for its intended purpose. Call your Graco distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not use hoses to pull equipment.
• Comply with all applicable safety regulations.

Warnings
4309907P
WARNINGS
PRESSURIZED ALUMINUM PARTS HAZARD
Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids
containing such solvents in pressurized aluminum equipment. Such use can cause serious chemical
reaction and equipment rupture, and result in death, serious injury, and property damage.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating
area of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic
fumes, burns, and hearing loss. This equipment includes but is not limited to:
• Protective eyewear
• Clothing and respirator as recommended by the fluid and solvent manufacturer
•Gloves
• Hearing protection

General Information
309907P 5
General Information
ProComp Turbine Sprayers
The 3800 ProComp turbine, compressor and spray gun
can spray most coatings or finishes currently being used
for automotive refinish, industrial, aerospace, marine,
wood, plastic, and architectural applications.
To produce high-quality paint finishes, the spray gun typ-
ically utilizes inbound air pressure of 6 psi (0.4 bar, 41
MPa) for the HVLP 3800 ProComp and 8 psi (.5bar 55
KPa) for the HVLP 4900 ProComp. A cone of air, pro-
duced by the gun, carries and directs the paint from the
gun to the surface, minimizing overspray and increasing
transfer efficiency. This enables painters to comply with
new, clean air laws that are designed to reduce VOC
(volatile organic compounds) emissions, eases paint
application by requiring fewer paint passes to obtain
coverage and saves on both material and clean-up time.
See HVLP-Turbine Gun manual 309205 (310750
Korean) for more information on the operation and use
of the turbine spray gun.
Unpacking Turbine
Unpack the Graco Turbine Sprayer from the shipping
carton. Inspect for any possible shipping damage. If
there is any damage, call your distributor.
ProComp Turbine Configuration
The Graco 3800 ProComp is a three-stage turbine
sprayer. The Graco 4900 ProComp is a four-stage
turbine sprayer.
3800 ProComp Turbine Component Table
System Model
2-qt Remote
Pressure Pot
30-ft (9 m) Turbine Air Hose
30-ft (9 m) Compressor Air
Hose Gun/Fluid Set
Extra Fluid
Sets
HVLP 3800 Pro-
Comp
Nippon 3800
246857
249590
287819
241413
240071
244118
non-bleeder style
pressure fed bun
with 244124 (#3)
244125 (#4)
244126 (#5)
Huarun 3800
ProComp 249524 287819
241413
240071
244118
non-bleeder style
pressure fed bun
with 244124 (#3)
287752
(0.5 mm, #2)
4900 ProComp 249768 287300 241413
240071
244118 287752
(0.5 mm, #2)

Component Identification
6309907P
Component Identification
FIG. 1
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FN Item Description
A
Turbine air outlet Connection for turbine air supply to HVLP-turbine Gun (HVLP 4900
ProComp units include quick connector)
BTurbine power switch On/Off switch for sprayer turbine
CStorage compartment Provides storage for fluid set components
DTurbine handle Folds flat for minimum storage space
ETurbine cover Houses air filter and provides dual air flow to motor and turbine
FAIr filters (pre-filter and main) Provides filtered air for turbine spray gun and turbine motor
G
Two-speed switch Allows two-speed operation of turbine sprayer motor (used on HVLP
4900 ProComp™units)
HAir filter indicator light Indicates air filter performance and maintenance
JConnector and power cord Provides power for turbine sprayer (power cord provided with turbine)
KResettable circuit breaker Provides protection for turbine motor
LCompressor air outlet Connection for compressor air supply to 2-quart remote pressure pot
MCompressor power switch On/Off switch for compressor

Setup
309907P 7
Setup
Grounding and Electric
Requirements
This equipment requires a 220V AC, 50 Hz, 8A circuit,
with a grounding receptacle.
Do not alter the ground prong or use an adapter.
Use 3-wire, 12 AWG, 50 ft (15 m) or short, extension
cords with ground prong.
Setup/Use Options
Turbine sprayers have a variety of user options. Fig. 2.
Fluid Preparation
• Always strain fluid before you spray. This includes
color, reducers and hardeners, if used.
• When using a turbine spray system, use a slower
drying reducer or thinner to compensate for the
faster drying time caused by the warm air of the tur-
bine. Do not over reduce!
Paint Reduction
Automotive Finishes
Reduce and catalyze all paint to manufacturer’s specifi-
cations. To compensate for the faster drying time of tur-
bine systems, use a reducer that is one step slower than
what is used for conventional air spray.
Industrial or Domestic Coatings
Reduce and catalyze all paint to manufacture’s specifi-
cations. If no reductions are given, first thoroughly mix
fluid to be sprayed. Then, gradually mix in the proper
reducer, testing the fluid until you have the correct
spraying consistency.
To test the consistency, remove the stir stick from the
thinned paint. When the paint stream running off the stir
stick breaks into droplets, the first few drops should be
about one second apart.
WARNING
Page 3
CAUTION
Turbine sprayer performance varies with the viscosity
of the material sprayed and the length of the hose.
To prevent pressure drop, use a short hose.

Setup
8309907P
Connect Fluid and Air Supply
Connect Fluid and Air Supply (Fig. 2)
• The Cart/Compressor provides the air supply for the
remote pressure pot.
• Circled letters indicate hose line connections.
1 Connect gun air supply hose (A) between turbine air
outlet (B) and gun air inlet (C). DO NOT use wrench
to tighten connections; hand tighten only.
2 If using a spray gun cup (D): Connect cup to gun
fluid inlet (E).
If using accessory remote pressure pots (F): Con-
nect fluid supply hose (G) between remote pressure
pot fluid outlet (H) and gun fluid inlet (E), or connect
pressure pot air hose (J) between pressure pot air
regulator inlet (K) and the cart compressor air outlet
(L).
Connect to Electric Supply
Plug turbine power cord into grounded outlet. Grounding
and Electric Requirements, page 7.
FIG. 2
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Setup
309907P 9
Pressure Relief Procedure
1 Turn off air supply to pressure pot or gun
2 Turn off turbine sprayer.
3Remote Pressure Pot: Tu r n out pressure relief
knob (113) one turn. Wait until pressure is
completely relieved before removing cover. Close
knob.
Spray Gun Cup:
Note: Elevate spray gun and pull trigger. This will
allow fluid in hose to drain back into remote
pressure pot.
a. Unlatch cup cover; loosen or remove cup from
cover to relieve pressure.
b. Clean spray gun and cup as instructed in
HVLP-Turbine Gun manual 309205 (310750
Korean)
FIG. 3
Accessory Remote Pressure Pot
1 Follow Pressure Relief Procedure, page 9.
2 Remove pressure pot cover and fill. Secure cover.
Note: Lightly coat cover threads with petroleum jelly.
Note: Always spray with the least amount of pot pres-
sure required to provide the desired spray pattern and
rate of application, typically 10 psi. Spraying at pot pres-
sures higher than necessary wastes paint and can result
in an orange peel finish.
Fill Cup or Remote Pressure Pot
Spray Gun Cup
Fill cup 3/4 full to keep air pressure tube clean. Install
cover. Latch the under-cup cover (H) to secure it to cup.
Fig. 4. The overcup (J) has threads to secure it in place
on the cup.
FIG. 4
WARNING
The accessory remote pressure pot remains
pressurized until pressure is manually relieved.
To reduce the risk of serious injury from pressur-
ized fluid or accidental spray from gun, always
relieve pressure in the pressure pot before loos-
ening or removing the cover. Also, relieve pres-
sure if the fluid nozzle clogs; and before
cleaning, checking or servicing equipment.
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CAUTION
If the 2-quart remote pressure pot is accidentally
tipped over or held at too great of an angle, fluid may
leak into air regulator and cause damage. Take pre-
cautions to avoid this. If fluid does get into regulator,
clean immediately.
CAUTION
Only hand-tighten pressure pot cover. Excessive tight-
ening may damage cover gasket.
WARNING
The spray gun cup is pressurized by the gun’s air
supply. To reduce the risk of serious injury from
pressurized fluid or accidental spray from gun,
always turn off the air supply to the gun before
removing the spray gun cup.
02845
HJ

Setup
10 309907P
Preparing the Spray Surface
To get proper adhesion, ensure surface is completely
clean.
1 Turn turbine On a few minutes before spraying to
allow warm-up.
Note: When turbine is not in use for an extended period
of time, turn it off. The turbine does not shut off automat-
ically.
2 Ensure turbine filter is clean before operating. Clean
filter, page 11.
Note: To adjust spray gun pattern, see HVLP-Turbine
Gun manual 309205 (310750 Korean).
WARNING
Page 3
Sparks can be expected during normal operation
of turbine motor. These sparks can ignite fumes
from flammable liquids, dust particles, and other
flammable substances in the spray area.
• Use additional hose if necessary, and ensure
the turbine is operated in clean, dry, well ven-
tilated area.
• Never use turbine inside spray booth!