Graco 224826 Manual de usuario

Instructions–Parts List

308069N

ENG

Important Safety Instructions

Read all warnings and instructions in this manual.

Save these instructions.

Overspray Masking Liquid

System

For airspray application of fluids.

7545A

ÄÄ

2700 psi (18.6 MPa, 186 bar) Maximum Working Pressure

80–90 psi (560–630 kPa, 5.6–6.3 bar) recommended regulated air inlet pressure

System

Model 224826

with Stainless Steel Pump*

Pump

Model 224825, Series A

Stainless Steel*

This pump is factory tested in oil. To avoid contami-

nating the masking liquid or the surface being

painted, flush the pump before immersing it in the

masking liquid. Use water only to flush. Paint sol-

vents will damage the seals. Follow the set-up

procedure carefully, and pay special attention to the

Flushing procedure on page 5.

CAUTION

2308069

Warnings

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 operating the equipment.

DUse the equipment only for its intended purpose. If you are uncertain about usage, call your Graco

distributor.

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

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

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

ment has a 2700 psi (18.6 MPa, 186 bar) maximum working pressure.

DUse 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.

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).

DDo not touch the heater during operation; it is very hot.

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

INJECTION HAZARD

High pressure fluid from dispense device, hose leaks or ruptured components will pierce skin. This

may look like just a cut, but it is a serious injury that can result in amputation. Get immediate surgi-

cal treatment.

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

DDo not put your hand or fingers over the fluid outlet.

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

DFollow Pressure Relief Procedure in this manual, when you stop dispensing and before cleaning,

checking or servicing equipment.

DTighten all fluid connections before operating the equipment.

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

3308069

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 and the object being sprayed. Refer to Grounding on page 4.

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.

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.

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.

4308069

Spray Gun Safety

Learn how to use the gun’s trigger safety

latch before operating the system.

The high pressure, airless spray gun supplied with this

system is equipped with a trigger safety latch. When

set, this latch prevents the gun from being triggered

accidentally. Read more about gun safety in the warn-

ing section, FLUID INJECTION on page NO TAG.

Set the trigger safety latch whenever you stop spray-

ing, even for only a minute, or if changing a tip.

TO RELEASE THE LATCH

FOR THE OFF SAFE, or

spraying position, gently

pull up on the latch and

turn it so it is parallel with

the gun body.

Fig. 1

TO SET THE LATCH IN

THE SAFE, or

non–spraying position,

turn it so it is at right

angles to the gun body.

7546A

7547A

Installation

Grounding

WARNING

FIRE AND EXPLOSION HAZARD

Before operating the pump, ground the

system as explained below. Also read

the section FIRE AND EXPLOSION

HAZARD on page 3.

1. Pump: use a ground wire and clamp as shown in

Fig. 2. Remove the ground screw (Z) and insert

through the eye of ring terminal at end of ground

wire (Y). Fasten the ground screw back onto the

pump and tighten securely. Connect the other end

of the ground wire to a true earth ground.

2. Fluid hoses: use only electrically conductive

hoses.

3. Air compressor: follow manufacturer’s recommen-

dations.

4. Spray gun: obtain grounding through connection to

a properly grounded fluid hose and pump.

5. Fluid supply container: according to local code.

6. Object being sprayed: according to local code.

7. Any pails used when flushing: use only metal,

grounded pails when flushing. Make firm metal-to-

metal contact between a metal part of the spray

gun and a pail. Use the lowest pressure possible.

Fig. 2

5308069

Installation

Prepare for installation

You must supply the following equipment to complete

the installation of this system.

1. An adjustable wrench and a screwdriver.

2. A grounding wire and clamp for the air motor.

3. The compressed air supply, with a hose that easily

reaches the air regulator assembly.

4. Two 5 gallon flushing containers, one with warm

soapy water, and one with cool, clean water.

CAUTION

Do not use paint solvents to flush, which will damage

the pump seals.

Setup for initial flushing See Fig. 3.

5. Screw the air regulator assembly into the air inlet

of the motor.

6. Remove the quick disconnect coupler from the

nipple. To disconnect, pull back on the sleeve of

the coupler and pull it away from the nipple. Screw

the coupler onto the air line. Do not connect the air

line to the pump until you are instructed to in the

Initial flushing or OPERATION section.

7. Screw the swivel fitting of the spray hose onto the

pump outlet nipple, and tighten it securely with a

wrench.

8. Follow the grounding instructions in the Ground-

ing section on page 4.

6308069

Installation

Fig. 3

AIR REGULATOR & GAUGE

AIR LINE

QUICK DISCONNECT NIPPLE

QUICK DISCONNECT COUPLER

SPRAY HOSE

SPRAY GUN

RAC V

TIP GUARD

GROUND WIRE & CLAMP

purchase separately

OUTLET NIPPLE

7549A

Initial flushing

CAUTION

This pump is factory tested in oil. To avoid contami-

nating the masking liquid or the surface being

painted, flush the pump before immersing it in the

masking liquid.

1. Mount the pump in a 5 gallon pail of warm, soapy

water.

2. Be sure there is no spray tip in the gun. See Fig. 7

if the tip needs to be removed.

3. Set the trigger safety latch. See Fig. 1.

4. Be sure the air regulator handle is turned to zero

(fully left as you look at it).

5. Connect the air line to the pump.

6. Release the trigger safety latch.

7. Aim the gun into the flushing pail and squeeze the

gun trigger and hold it open.

8. Slowly open the air regulator until the pump is

running slowly and smoothly.

9. Using very low pressure, direct the spray from the

gun back into the flushing container. Circulate the

soapy water in this way for several minutes. Then

release the trigger, set the trigger safety latch, and

disconnect the air line to the pump.

10. Switch the pump to the clean container of water.

Connect the air line, release the trigger safety

latch, and repeat Step 9, above.

11. Raise the pump out of the pail. Trigger the gun to

force the water from the system. DO NOT run the

pump dry for more than 10 seconds to avoid

damaging the pump packings.

7308069

Installation

ÄÄ

Fig. 4

AIR REGULATOR & GAUGE

AIR LINE

QUICK DISCONNECT NIPPLE

QUICK DISCONNECT COUPLER

SPRAY GUN

RAC V

TIP GUARD

GROUND WIRE & CLAMP

purchase separately

16 GALLON DRUM

Note how suction tube curls around the

sides and bottom of the drum.

VENT HOLE

BUNG HOLE

DISPLACEMENT PUMP

HOSE CLAMP

SUCTION TUBE

STRAINER

DRAIN

VALVE

5 GALLON PAIL

BUNG ADAPTER

THUMBSCREW

7550A

Setup for operation

NOTE: Be sure the system has been thoroughly

flushed.

1. Loosen the hose clamp on the suction hose. Slide

the suction hose as far as possible onto the pump

intake valve.

2. Slide the clamp up and tighten its screw

snugly! A loose clamp prevents the pump from

getting adequate fluid supply, which results in low

fluid flow and/or spitting air from the gun.

3. Remove the bung cover from the drum and open

the vent hole.

4. Loosen the thumbscrew on the bung adapter.

5. Slide the suction hose and pump through the bung

hole in the drum cover. Before the final positioning

of the pump, screw the bung adapter firmly into the

bung hole. Now position the pump as follows.

a. For 55 gallon drums: slide the pump into the

drum until you sense that the strainer is at the

bottom of the drum. Tighten the thumbscrew

snugly.

b. For 16 gallon drums: slide the pump into the

drum and allow the suction hose to curl around

the side and rest on the bottom of the drum.

Tighten the thumbscrew snugly.

c. For 5 gallon demo pails: Remove the suction

hose and strainer. Install the accessory pail

cover, p/n 222058. Slide the pump into the pail

until the intake valve is 1/2” off the bottom of

the pail. Tighten the bung adapter thumbscrew

snugly.

NOTE: Go to Prime the system on page 9.

8308069

Operation

Pressure Relief Procedure

WARNING

INJECTION HAZARD

Fluid under high pressure can be in-

jected through the skin and cause

serious injury. To reduce the risk of an

injury from injection, splashing fluid, or moving

parts, follow the Pressure Relief Procedure

whenever you:

Dare instructed to relieve the pressure,

Dstop spraying,

Dcheck or service any of the system equipment,

Dor install or clean the spray tip.

1. Engage the gun’s trigger safety latch.

2. Close the air regulator and disconnect the air

supply hose.

3. Disengage the trigger safety latch. Hold a metal

part of the gun firmly to the side of a grounded

metal waste pail and trigger it to relieve the fluid

pressure.

4. Engage the trigger safety latch.

5. Place a pail under the drain valve and open the

drain valve to be sure all fluid pressure is relieved.

If you suspect that the tip guard or hose is clogged, or

that pressure has not been fully relieved after following

the steps above, very slowly loosen the tip guard

retaining nut or hose end coupling to relieve pressure

gradually, then loosen completely.

9308069

Operation

ÄÄ

Fig. 5

AIR REGULATOR & GAUGE

AIR LINE

QUICK DISCONNECT NIPPLE

QUICK DISCONNECT COUPLER

SPRAY

GUN

TIP GUARD

TIGHTEN TO

DRAIN VALVE DETAIL

Prime the system

1. Set the trigger safety latch. See Fig. 1.

2. Remove the spray tip from the gun, if it is installed.

See Changing spray tips on page 11.

3. Be sure the air regulator handle is turned to zero

(fully left as you look at it).

4. Connect the air line to the pump.

5. Release the trigger safety latch.

6. Hold a metal part of the gun firmly against and

aimed into a grounded metal pail. See Fig. 6.

Squeeze the gun trigger and hold it open.

Fig. 6

MAINTAIN FIRM

METAL-TO-METAL

CONTACT BETWEEN

GUN AND

GROUNDED METAL

CONTAINER

GROUND

WIRE

7. Slowly open the air regulator until the pump is

running slowly and smoothly.

8. Dispense about 1 pint of masking liquid to be sure

all air is pushed out of the system and the liquid

flows freely.

9. Release the trigger and set the trigger safety latch.

See Fig. 1.

10. Check all fluid connections for leaks; relieve pres-

sure before tightening connections.

Select a tip

Two tips are provided with the gun. The size is marked

on the cylinder handle. The size 621 tip comes in-

stalled in the tip guard. Each tip comes with a square

ring and a seal. Refer to Changing spray tips and

Fig. 7.

11. Use the 211 size tip for narrow surfaces such as

door jambs.

12. Use the 621 size tip for wide or large surfaces.

10 308069

Operation

Installing the spray tip

1. Be sure the trigger safety latch is engaged.

2. Install the tip cylinder. Hold the cylinder with the

arrow handle straight up. Push the cylinder into the

tip guard so the flange on the cylinder fits into the

slots at the base of the tip guard. See Fig 7. Then

turn the arrow handle in the direction of the tip

guard, which is the spraying position. See Fig. 8.

If the tip guard was removed from the gun and

you are are reinstalling it:

3. Be sure the seal and square ring are in place as

shown in Fig. 7. If not, place the seal on the end of

a pencil with the curved side out. Guide the seal

into the retaining nut and turn it until it straddles

the cylinder. Drop in the square ring and press it

down.

4. Screw the retaining nut snugly onto the gun,

holding the tip guard in the desired direction while

tightening the nut. See Step 4 of Adjusting the

spray pattern and spraying pressure on

page 12 for more information on adjusting the

direction of the spray pattern.

CAUTION

To avoid damaging the tip guard:

DNever use a wrench to turn the plastic tip guard,

which causes internal damage.

DNever hang the gun by the tip guard.

Fig. 7

TIP GUARD

TIP CYLINDER

ARROW HANDLE

RETAINING NUT

SEAL

SQUARE RING

FLANGE

curved side faces retaining nut

SLOT

TIP SIZE MARKED HERE

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