Graco ProComp HVLP 3800 User manual

Instructions – Parts List

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441

HVLP 3800 and 4900

ProComptTurbine Sprayers

309242K

Important Safety Instructions

Read all warnings and instructions in this manual.

Save these instructions.

TI0875

4900 HVLP ProComp

120V AC 50/60 Hz

HVLP 3800 ProComptwith Three-Stage Turbine

Model 233423

6 psi (41 kPa, 0.4 bar) Maximum Working Pressure

HVLP 4900 ProComptwith Four-Stage Turbine

Model 233455

8 psi (55 kPa, 0.5 bar) Maximum Working Pressure

Model descriptions are in Turbine

Components Table on page 4.

Related Manuals

HVLP–Turbine Gun 309205. . . . . . . . . . . . .

Parts

2 309242

Table of Contents

Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Information 4. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Component Identification and Function 5. . . . . . . . . . . .

Setup 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Shutdown 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repair 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts Drawing 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parts List 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Specifications 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Standard Warranty 22. . . . . . . . . . . . . . . . . . . . . .

Graco Phone Number 22. . . . . . . . . . . . . . . . . . . . . . . . . .

Symbols

Warning Symbol

WARNING

This symbol alerts you to the possibility of serious

injury or death if you do not follow the instructions.

Caution Symbol

CAUTION

This symbol alerts you to the possibility of damage to

or destruction of equipment if you do not follow the

instructions.

WARNING

FIRE AND EXPLOSION HAZARD

Improper grounding, poor ventilation, open flames, or sparks can cause a hazardous condition and

result in a fire or explosion and serious injury.

DGround the equipment. See Grounding on page 6.

DIf there is any static sparking or you feel an electric shock while using this equipment, stop spray-

ing immediately. Do not use the equipment until you identify and correct the problem.

DProvide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid

being sprayed.

DWhen flammable liquid is sprayed or used for flushing or cleaning the equipment, the turbine must

be placed at least 20 feet (6.1 m) away from areas where hazardous concentrations of flammable

vapors are likely to occur.

DUse additional air hose if necessary to ensure that the turbine is operated in a clean, dry, well-ven-

tilated area.

DNever place the turbine inside a spray booth! Use this equipment outdoors or in extremely well-

ventilated areas.

DKeep the spray area free of debris, including solvent, rags, and gasoline.

DElectrically disconnect all equipment in the spray area.

DExtinguish all open flames or pilot lights in the spray area.

DDo not smoke in the spray area.

DDo not turn on or off any light switch in the spray area while operating or if fumes are present.

DDo not operate a gasoline engine in the spray area.

309242 3

WARNING

INSTRUCTIONS

EQUIPMENT MISUSE HAZARD

Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.

DThis equipment is for professional use only.

DRead all instruction manuals, tags, and labels before you operate the equipment.

DUse the equipment only for its intended purpose. If you are not sure, call your Graco distributor.

DDo not alter or modify this equipment. Use only genuine Graco parts.

DCheck equipment daily. Repair or replace worn or damaged parts immediately.

DDo not exceed the maximum working pressure of the lowest-rated system component.

HVLP 3800 ProComptturbine has a working pressure of 6 psi (0.4 bar, 41 kPa).

HVLP 4900 ProComptturbine has a working pressure of 8 psi (0.5 bar, 55 kPa).

DUse fluids and solvents that are compatible with the equipment wetted parts. See Specifications

on page 21 for wetted parts information.

DDo not use hoses to pull equipment.

DRoute hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose

Graco hoses to temperatures above 82_C (180_F) or below –40_C (–40_F).

DWear hearing protection when operating this equipment.

DDo not lift pressurized equipment.

DComply with all applicable local, state, and national fire, electrical, and safety regulations.

DDo not point the gun at anyone or at any part of the body.

DDo not put your hand or fingers over the gun fluid nozzle.

DDo not stop or deflect leaks with your hand, body, glove, or rag.

DDo not “blow back” fluid; this is not an air spray system.

DFollow the Pressure Relief Procedure on page 10 if the fluid nozzle clogs and before you clean,

check, or service the equipment.

DTighten all fluid connections before you operate the equipment.

DCheck the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.

TOXIC FLUID HAZARD

Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,

inhaled, or swallowed.

DKnow the specific hazards of the fluid you are using.

DStore hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,

state, and national guidelines.

DAlways wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and

solvent manufacturer.

DDo not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents, or

fluids containing such solvents in the turbine spray system, which contains aluminum and/or galva-

nized-coated parts. Such use could result in a serious chemical reaction, with the possibility of

explosion, which could cause death, serious injury, and/or substantial property damage.

4 309242

General Information

HVLP ProComptTurbine Sprayers

The HVLP 3800 ProComptand the HVLP 4900

ProComptturbines, compressor and spray guns 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

typically utilizes inbound air pressure of 6 psi (0.4 bar,

41 kPa) for the HVLP 3800 ProComptand 8 psi (0.5

bar, 55 kPa) for the HVLP 4900 ProCompt. A cone of

air, produced 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 for more

information on the operation and use of the turbine

spray gun.

Unpacking Turbine

Unpack the Graco Turbine Sprayer from the shipping

carton, and inspect for any possible shipping damage.

If there is any damage, call your distributor.

HVLP ProComptTurbine Configurations

Graco turbines come in the following basic configura-

tions:

DHVLP 3800 ProComptthree-stage turbine sprayer

DHVLP 4900 ProComptfour-stage turbine sprayer

HVLP 3800 and 4900 ProComptTurbine Components Table

System Model 2–qt Remote

Pressure Pot

30-ft (9 m) Turbine

Air Hose

30-ft (9 m) Com-

pressor Air Hose

Gun /

Fluid Set

Extra/Fluid

Sets

HVLP 3800

ProCompt

233423 287819 241413

240071

244118 non-

bleeder style

pressure–fed gun

with 244124 (#3)

244125 (#4)

244126 (#5)

HVLP 4900

ProCompt

233455 287819 241413

240071

244118 non-

bleeder style

pressure–fed gun

with 244124 (#3)

244123 (#2)

244125 (#4)

244126 (#5)

244127 (#6)

309242 5

Component Identification and Function

Fig. 1

TI0876

ATurbine air outlet Connection for turbine air supply to HVLP–Turbine Gun (HVLP 4900

ProComptunits 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) Provide filtered air for turbine spray gun and turbine motor

GTwo-speed switch Allows two-speed operation of turbine sprayer motor (used on HVLP

4900 ProComptunits)

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

6 309242

Setup

Grounding

WARNING

Improper installation or alteration of the grounding

plug will result in a risk of electric shock, fire, or

explosion that could cause serious injury or death.

This equipment requires a 120V AC, 60 Hz, 15A circuit

with a grounding receptacle. See Fig. 2.

Fig. 2

grounding prong

grounded outlets

Extension cord must be 3-wire, 12 AWG, 50 ft (15 m)

or shorter.

Do not alter the ground prong or use an adapter.

Setup/Use Options

HVLP Turbine Sprayers have a variety of user options.

See Fig. 3.

DSee HVLP–Turbine Gun manual 309205 for in-

formation on turbine spray gun setup and operation.

Prepare the Fluid

DAlways strain the fluid before you spray; this

includes color, reducer, and hardeners if used.

DWhen using a turbine spray system, use a slow-

er drying reducer or thinner to compensate for the

faster drying time caused by the warm air of the

turbine. Do not over reduce.

CAUTION

The performance of the turbine sprayer varies with

the viscosity of the material and the length of the

hose. Keep the hose short to prevent pressure drop.

Paint Reduction — Automotive Type Finishes

Reduce and catalyze all paint to manufacturer’s speci-

fications. To compensate for the faster drying time of

turbine systems, use a reducer that is one step slower

than what is used for conventional air spray.

Paint Reduction — Industrial or Domestic

Coatings

Reduce and catalyze all paint to manufacturer’s speci-

fications. If no reductions are given, first thoroughly

mix the 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.

Fig. 3

cup-over option

(see manual 309205)

cup setup for spray gun

HVLP 4900 ProCompt

Turbine

remote pressure pot setup for spray gun

TI0875

309242 7

Setup

Connect the Fluid and Air Supply

See Fig. 3

DThe compressor provides the air supply for the

remote pressure pot.

DThe circled letters in Fig. 3 indicate hose line con-

nections.

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.

The HVLP 4900 ProComptturbine uses a quick

connector at outlet (B). A wrench is not required

for hose connection.

2. If using a spray gun cup (D):

Connect the cup to the gun fluid inlet (E).

If using accessory remote pressure pot (F): Con-

nect fluid supply hose (G) between remote pres-

sure pot fluid outlet (H) and gun fluid inlet (E).

Connect pressure pot air hose (J) between pres-

sure pot air regulator inlet (K) and the compressor

air outlet (L).

Connect to Electric Supply

Plug turbine power cord into grounded outlet.

NOTE: Extension cord must be 3-wire, 12 AWG, 50 ft

(15 m) or shorter.

4958C

compressor

2-quart remote pressure pot

ti7064a

8 309242

Setup

Fill the Cup or Remote Pressure Pot

Spray Gun Cup

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 the gun,

always turn off the air supply to the gun before you

remove the spray gun cup.

Only fill the cup 3/4 full to help keep the air pressure

tube clean, then install the cover. The under-cup cover

has a latch (H) to secure it to the cup. The over-cup (J)

has threads that keep the lid in place when tightened in

place on the cup.

Fig. 4

02845

Accessory Remote Pressure Pot

WARNING

The accessory remote pressure pots remain pres-

surized until pressure is manually relieved. To

reduce the risk of serious injury from pressurized

fluid or accidental spray from the gun, always

relieve pressure in the pressure pot before you

loosen or remove the cover.

1. Relieve pressure from remote pressure pot as

follows (see Fig. 5):

a. Turn off air supply to pressure pot.

b. Turn pressure relief knob (133). Wait until

pressure is completely relieved before you

remove cover. Close knob.

Fig. 5

2 quart

2. Remove pressure pot cover and fill. Secure cover.

NOTE: Lightly coat the cover threads with petroleum

jelly.

CAUTION

If the 2-quart remote pressure pot is accidentally

tipped over or held at too great of an angle, fluid may

leak into the air regulator and cause damage. Take

precautions to avoid this. If fluid does get into the

regulator, clean it immediately.

NOTE: Always spray with the least amount of pot

pressure required to provide the desired spray pattern

and rate of application, typically 10 psi. Spraying at

pot pressures higher than necessary wastes paint and

can result in an orange peel finish.

309242 9

Setup

Prepare Surface to be Sprayed

To get proper adhesion, make sure surface is com-

pletely clean.

Operating Turbine

WARNING

Sparks can be expected in the normal operation of

the turbine motor. These sparks can ignite fumes

from flammable liquids, dust particles, and other

flammable substances in the spray area. This can

cause serious injury and property damage. Be sure

to follow the precautions below:

DWhen flammable liquid is sprayed or used for

flushing or cleaning equipment, the turbine must

be placed at least 20 feet (6.1 m) away from

areas where hazardous concentrations of

flammable vapors are likely to occur.

DUse additional air hose if necessary to ensure

that the turbine is operated in a clean, dry, well

ventilated area.

DNever place the turbine inside a spray booth!

Use this equipment outdoors or in extremely

well ventilated areas.

DAvoid all ignition sources such as: static elec-

tricity from plastic drop cloths, open flames like

pilot lights, hot objects like cigarettes, arcs from

connecting or disconnecting power cords, and

turning light switches on and off. Extinguish or

remove all sources of ignition.

1. Turn turbine ON a few minutes before spraying to

allow warm-up.

NOTE: When the turbine is not in use for an extended

period of time, turn it off. The turbine does not shut off

automatically.

2. Be sure turbine filter is clean before operating. See

page 11 to check and clean filter.

NOTE: To adjust the spray gun pattern see the turbine

gun manual.

HVLP ProComptCompressor Cold

Weather Operation

The HVLP ProComptuses a diaphragm compressor.

A new diaphragm may be stiff in cold weather. If cold

enough, the diaphragm is too stiff to allow the com-

pressor motor to start (the unit hums). If this occurs,

follow these steps:

1. Turn compressor OFF. Turn turbine ON and allow

to warm up for a few minutes.

2. Turn compressor ON. If compressor does not

start, proceed to step 3.

3. Turn turbine and compressor OFF.

4. Unplug turbine from power source.

5. Loosen four thumbscrews (16), remove filter

retainer (15), prefilter (22), and main filter (21).

See Fig. 7.

6. Hand spin cooling fan on compressor for a few

revolutions.

7. Reinstall filters and filter retainer.

8. Plug in turbine.

9. Turn turbine and compressor ON. If necessary,

repeat steps 3–9 above.

10 309242

Shutdown

Pressure Relief Procedure

WARNING

PRESSURIZED EQUIPMENT HAZARD

The equipment stays pressurized until pressure is

manually relieved. To reduce the risk of a serious

injury from pressurized fluid, accidental spray from

the gun, or splashing fluid, follow the Pressure

Relief Procedure whenever you:

DAre instructed to relieve the pressure

DStop spraying

DCheck or service any of the system equipment

DInstall or clean the fluid nozzles

1. Turn off air supply to gun.

2. Turn off turbine sprayer.

WARNING

The turbine hose outlet may be hot. Carefully check

the hose end before you remove the hose.

3. If using remote pressure pot, relieve pressure by

following the pressure relief procedure on page 8.

NOTE: Elevate spray gun and pull trigger. This will

allow fluid in fluid hose to drain back into remote

pressure pot.

4. If using a spray gun cup, unlatch cup cover;

loosen or remove cup from cover to relieve cup

pressure.

5. Clean spray gun and cup as instructed in the

HVLP–Turbine Gun manual 309205.

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