Graco BLACK MAX Operation manual

307–821

Rev. F

Supersedes D

and PCN E

First

choice when

quality counts.



INSTRUCTIONS-PARTS

LIST

INSTRUCTIONS

This

manual contains important

warnings and information.

READ AND KEEP FOR REFERENCE.

BLACK

MAX



Airless Spray Gun

3600 psi (24.8 MPa, 248 bar) Maximum Working Pressure

Model

220–730, Series D

Include

s g

, R

everse-A-Clea

n I

V D

ripLessTi

p G

uard

(par

t n

. 2

20–422)

, a S

witchTip

pra

y t

(par

t n

. 2

21–413) for us

e w

h m

ediu

m v

iscosit

y f

luid

suc

h a

s l

atex

, a

d a

n i

nle

t f

lui

d f

ilter.

GRACO INC. P.O. BOX 1441

MINNEAPOLIS, MN

55440–1441

Graco

Inc. is registered to I.S. EN ISO 9001



Table

of Contents

Warnings 2.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation/Operation

Gun 6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RAC

IV and SwitchT

ip 7.

. . . . . . . . . . . . . . . . . . . . . .

Operation

Gun 10

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RAC

IV and SwitchT

ip 10.

. . . . . . . . . . . . . . . . . . . . . .

Maintenance 11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repair 11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Available Tips 12.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco

Standard W

arranty 16.

. . . . . . . . . . . . . . . . . . . . .

Graco

Phone Number

16.

. . . . . . . . . . . . . . . . . . . . . . . . .

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

INSTRUCTIONS

EQUIPMENT MISUSE HAZARD

Equipment

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

This equipment is for professional use only

Read all instruction manuals, tags, and labels before operating the equipment.

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

Do not alter or modify this equipment.

Check equipment daily

. Repair or replace worn or damaged parts immediately

Do not exceed the maximum working pressure of the lowest rated system component. This product

has a 3600 psi (24.8 MPa, 248 bar)

Maximum W

orking Pressure

Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the

Tech-

nical Data

section of all equipment manuals. Read the fluid and solvent manufacturer

’

s warnings.

Do not use 1,1,1–trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or

fluids containing such solvents in pressurized aluminum equipment. Such use could result in a

chemical reaction, with the possibility of explosion.

Do not use hoses to pull equipment.

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

Graco hoses to temperatures above 66

C (150

F) or below –40

C (–40

_F).

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

The wallet-sized warning card provided with this gun should be kept with the operator at all times.

The card contains important information on reducing the risk of a fluid injection, and tratment

information if a fluid injection injury occurs. Extra cards are available free of charge; contact your

Graco distributor

 

WARNING

INJECTION HAZARD

Spray

from the gun, leaks or ruptured components can inject fluid into your body and cause extremely

serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also

cause serious injury



Fluid injected into the skin might look like just a cut, but it is a serious injury

Get immediate medi

cal attention.



Do not point the gun at anyone or at any part of the body



Do not put your hand or fingers over the spray tip.



Do not stop or deflect leaks with your hand, body

, glove or rag.



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



Always have the tip guard and the trigger guard on the gun when spraying.



Be sure the gun trigger safety operates before spraying.



Lock the gun trigger safety when you stop spraying.



Follow the

Pressure Relief Procedure

on page 9 if the spray tip clogs and before cleaning,

checking or servicing the equipment.

T

ighten all fluid connections before operating the equipment.



Check the hoses, tubes, and couplings daily

. Replace worn or damaged parts immediately.

Do not repair high pressure couplings; you must replace the entire hose.



Fluid hoses must have spring guards on both ends, to help protect them from rupture caused by

kinks or bends near the couplings.

RECOIL HAZARD

Due

to the high pressure fluid emitted, a strong recoil action may occur when you trigger this gun. If

you are unprepared, your hand could be forced back toward your body or you could lose your balance

and fall, resulting in serious injury



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



If 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.



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

being sprayed.



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



Electrically disconnect all equipment in the spray area.



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



Do not smoke in the spray area.



Do not turn on or of

f any light switch in the spray area while operating or if fumes are present.



Do not operate a gasoline engine in the spray area.



Ground the equipment and the object being sprayed. Refer to your pump instruction manual.

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.



Know the specific hazards of the fluid you are using.



Store hazardous fluid in an approved container

. Dispose of hazardous fluid according to all local,

state and national guidelines.



Always wear protective eyewear

, gloves, clothing and respirator as recommended by the fluid and

solvent manufacturer

 

Installation

Grounding

WARNING

FIRE AND EXPLOSION HAZARD

Proper electrical grounding is essential

to reduce the risk of fire or explosion

which can result in serious injury and

property damage. Also read

FIRE OR

EXPLOSION HAZARD

on page 4

o reduce the risk of static sparking, ground the spray

er and all other spray equipment used or located in the

spray area. Check your local electrical code for de

tailed grounding instructions for your area and type of

equipment. Be sure to ground all of this spray equip

ment:



Pump or sprayer:

as instructed in your separate

pump or sprayer manual.



Air compressor or hydraulic power supply:

accord

ing to local code and manufacturer

’

s recommenda

tions.



Fluid hoses:

use only grounded hoses with a maxi

mum of 500 ft (150 m) combined hose length to

ensure grounding continuity



Spray gun:

obtain grounding through connection to

a properly grounded fluid hose and sprayer



Object being sprayed:

according to local code.



Fluid supply container:

according to local code.



All solvent pails used when flushing

, according to

local code. Use only metal pails, which are conduc

tive. Do not place the pail on a non-conductive

surface, such as paper or cardboard, which inter

rupts the grounding continuity



o maintain grounding continuity when flushing or

relieving pressure

, always hold a metal part of the

gun firmly to the side of a grounded metal pail, then

trigger the gun.



Installation

Gun

This gun includes an inlet filter suitable for latex

paint. Contact your Graco distributor to order a

stain/enamel filter

. T

o install, screw out the filter

cap. Push the filter into the fluid tube. Reinstall the

gasket with the lips facing into the gun. Reinstall

the cap and tighten with a wrench. See Fig 1.

Connect a grounded fluid hose from your pump or

sprayer to the gun’

s 1/4–18 npt(m) inlet.

Remove the RAC IV DripLess tip guard from the

gun (Model 220–730 only).

Flush and then prime the pump or sprayer as

instructed in the separate pump or sprayer manu

al. Relieve fluid pressure and engage the gun

safety lever

If you have a RAC IV DripLess T

ip Guard and

SwitchT

ip,

refer to the installation instructions

below.

For any other type of tip guard,

refer to the instruc

tions supplied with it for installation and operation.

Fig 1

GASKET

FILTER

CAP

FIL

TER

1/4–18 npt(m)

FLUID INLET

 

Installation

Reverse-A-Clean IV and SwitchTip

WARNING

Failure

to install or use the RAC IV tip guard assembly

correctly may result in an undirected spray of paint

into the eyes or on the skin of the operator. Be sure

you:

Use

the appropriate gasket for the solvent used.

See page 8.



Fully insert the SwitchT

ip into the guard.



Fully tighten the guard onto the gun nozzle

using a wrench.

T

urn the SwitchTip handle so it is parallel to the

gun nozzle. See Fig. 2.



When replacing a worn spray tip, always install

a new gasket and seat.

RETAINING

NUT

Fig 2

SwitchTip

HANDLE

RAC

IV DripLess

TIP GUARD

FULL SPRA

Y POSITION

FULL CLEAN POSITION

YES



Installation

black and yellow gasket

are supplied with each Switch

Tip.

The solvent you use determines which gasket to use

with

the RAC IV

. The new flat-backed seat accepts either

gasket.

If you have an older RAC IV which you plan to use

with

this gun, you must install the new style seat.

When to use the black rubber gasket

The black rubber gasket is for use ONLY with latex and

oil-based paints, stoddard solvents, mineral spirits, tur-

pentine

and water

. When using this gasket, the SwitchT

can

be removed and replaced without using tools.

When to use the yellow plastic gasket

The yellow plastic gasket can be used with the same

fluids as the black rubber gasket AND with most other

solvents. When using this gasket, you must loosen the

RAC

IV retaining nut to remove the SwitchT

ip.

WARNING

o reduce the risk of fluid splashback in to the eyes

or on the skin:

USE THE BLACK RUBBER GASKET ONL

Y with

latex and oil-based paints, stoddard solvents,

mineral spirits, turpentine, and water

. Never use it

with any other solvents.

USE THE YELLOW PLASTIC GASKET with the

same solvents as the black rubber gasket and with

lacquer thinner

, tricholorethylene, MEK, acetone,

brush cleaner

, xylol, and any unknown solvents.

To install the RAC IV and SwitchTip

WARNING

Always follow the Pressure Relief Procedure

Warning on page 9 before installing, cleaning or

changing

tips.

NOTE:

The spray tip supplied with this gun is for use

with medium viscosity fluid, such as latex paint. See

AILABLE TIPS,

page 12, or contact your Graco

distributor to help you select the right tip for your job.

Install the SwitchT

ip in the tip guard. The flange on the

cylinder fits into the slots at the base of the tip guard.

See Fig 3.

Place the seat on the end of a pencil, curved side out.

Guide the seat into the retaining nut and turn it until it

straddles the cylinder

. Drop in the appropriate gasket

and press it down. If using the yellow plastic gasket, be

sure the flat side faces out.

Screw the RAC IV retaining nut snugly onto the gun,

holding the orange tip guard in the desired position.

Finish tightening with a wrench.

CAUTION

Never use a wrench to turn the plastic tip guard, to

avoid damage to the guard.

Fig 3

YELLOW

PLASTIC

GASKET

BLACK

RUBBER

GASKET

221–XXX

SwitchTip

SPRA

Y TIP

RAC IV

DripLess

TIP GUARD

RETAINING

NUT

FLAT-BACKED

SEAT

 

Operation

Pressure Relief Procedure

WARNING

INJECTION

HAZARD

The system pressure must be manually

relieved to prevent the system from

starting or spraying accidentally

. Fluid

under high pressure can be injected through the

skin and cause serious injury

. T

o reduce the risk of

an injury from injection, splashing fluid, or moving

parts, follow the

Pressure Relief Procedure

whenever you:



are instructed to relieve the pressure,



stop spraying,



check or service any of the system equipment,



or install or clean the spray tips.

Shut of

f the power to the pump or sprayer

. For an

air powered pump, also close the bleed-type

master air valve. For an electric sprayer

, also

unplug it.

Hold a metal part of the gun firmly to the side of a

grounded metal pail, and trigger the gun into the

pail to relieve pressure.

Engage the gun safety lever

Open the pump or sprayer drain valve or other

fluid relief valve.

If you suspect that the spray tip or hose is completely

clogged, or that pressure has not been fully relieved

after following the steps above, very slowly loosen the

tip guard retaining nut of hose end coupling to relieve

pressure gradually

, then loosen completely

. Now clear

the tip or hose.

 

Operation

Gun

Be sure you know how to operate the trigger

safety lever

Set the lever in the “ON SAFE” posi

tion

whenever

you stop spraying. T

o set the safety

lever

, point the gun down so the trigger falls for

ward, then flip the safety lever to the right or left so

it is perpendicular to the trigger

. This is the “SAFE”

of inoperative position. To release the safety lever

flip the lever to the center

, so it is parallel to the

trigger

. This is the “OFF SAFE” or spraying posi

tion. See Fig 4.

Fig 4

SAFETY

LEVER IN

“OFF SAFE” OR

SPRAYING

POSITION

SAFETY LEVER IN

“ON SAFE” OR

INOPERATIVE

POSITION

TRIGGER

iew from front of gun

WARNING

reduce the risk of a serious fluid injection injury

, do

not operate the gun with the tip guard, gun body, or

trigger

safety lever removed.

Always use the lowest pressure necessary

obtain good atomization. Higher pressures cause

premature wear of the tip, gun and pump or spray

er.

Reverse-A-Clean

Be sure the arrow of the cylinder handle is in the

FULL

SPRAY

position before operating the gun.

WARNING

Keep clear of the nozzle. High pressure fluid from

leaks

or spray can penetrate

the sking and cause ex

tremely

serious injury

, including the need for

amputa

tion. The tip guard provides extra protection against

fluid injection, but does not prevent it. Never cut off

the

tip guard.

CAUTION

The openings in the tip guard are designed to reduce

paint buildup on the guard while spraying. Any

damage to the sharp edges of the tip guard openings

causes paint to collect at that area. T

o reduce the

risk of damage, do not hang the gun by the tip guard.

To Clear a Clogged SwitchTip

the SwitchT

ip clogs while spraying, engage the gun

safety latch. T

urn the arrow handle to the

FULL

SPRAY

position. Disengage the safety latch and

trigger the gun into a waste container

. Fluid pressure

should force out the clog. Engage the safety latch and

return the arrow to the

FULL SPRA

position. See Fig

If the SwitchTip is still clogged,

shut of

f the power

to the pump/sprayer

. VER

Y SLOWL

Y loosen the

retaining nut to relieve pressure gradually

. Clean or

replace the tip.

Fig 5

RETAINING

NUT

FULL SPRA

POSITION

FULL CLEAN

POSITION

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