Graco Inc PT2000 User Manual

Size:
645.54 Kb
Download

INSTRUCTIONS-PARTSLIST

307–730

This manual contains IMPORTANT

 

Rev G

INSTRUCTIONS and WARNINGS.

 

Supersedes E

READ AND RETAIN FOR REFERENCE.

 

 

 

(and F, not published)

1/4 Gallon Per Minute, 120 V AC, 60 Hz

APPLICATION EQUIPMENT FROM GRACO

 

PT2000

Pressure Roller System

250 psi (17.5 bar) MAXIMUM WORKING PRESSURE

Model 218–938,Series B

with 18 inch Extension and 1/2 and 3/4 inch nap Roller Covers

Model 223–660,Series A

Basic Pressure Roller, without hose, gun, extension or roller

U.S. Patent No. 4,722,230; 4,652,024 Foreign Patents Pending

CONTENTS

Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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

System Description . . . . . . . . . . . . . . . . 5

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

Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Operation . . . . . . . . . . . . . . . . . . . . . . . . 7

Maintenance

Flushing . . . . . . . . . . . . . . . . . . . . . . . 8

Roller Cover . . . . . . . . . . . . . . . . . . . 9

Troubleshooting Chart . . . . . . . . . . . . 10

Repair

Roller Valve . . . . . . . . . . . . . . . . . . . 11

Fuse . . . . . . . . . . . . . . . . . . . . . . . . . 12

ON/OFF Switch . . . . . . . . . . . . . . . 12

Rectifier . . . . . . . . . . . . . . . . . . . . . . 12

Power Supply Cord . . . . . . . . . . . . 12

Pressure Switch . . . . . . . . . . . . . . . 13

Outlet Valve . . . . . . . . . . . . . . . . . . . 13

Inlet Valve . . . . . . . . . . . . . . . . . . . . 13

Diaphragm . . . . . . . . . . . . . . . . . . . . 14

Suction Tube . . . . . . . . . . . . . . . . . . 14

Priming Valve & Tube . . . . . . . . . . 14

Motor, Conn Rod, Bearing . . . . . . 15

Parts Drawing & Lists . . . . . . . . . . . . . 16

Accessories . . . . . . . . . . . . . . . . . . . . . 19

Technical Data . . . . . . . . . . . . . . . . . . . 20

Model 218–938shown

Always Professional Results

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

COPYRIGHT 1985, GRACO INC.

CAUTION

To avoid premature wear of the pressure switch, never use more than 25 ft (7.6 m) of 1/4” ID outlet hose. When longer outlet hose is needed, use 3/8” ID hose at a maximum of 100 ft (30 m) long. Never use 1/4” ID and 3/8” ID hose together.

Do not use lacquer or lacquer thinner in the suction and outlet hoses supplied with this system. These fluids quickly destroy the hose material. Use the optional chemical–resistanthoses.

See ACCESSORIES section of the manual for ordering optional hoses.

TERMS

Be sure you read and understand each of these terms before reading the rest of the manual.

WARNING: Alerts user to avoid or correct conditions which could cause bodily injury.

CAUTION: Alerts user to avoid or correct conditions which could damage or destroy the equipment.

NOTE: Gives additional explanation of a procedure or helpful hints.

WARNING

Be sure all operators of this equipment read, understand, and follow the warnings and instructions in this manual !

GENERAL SAFETY

EQUIPMENT MISUSE HAZARD

Use extreme care not to splash paint, contaminated flushing water, or solvent into your eyes. Wear protective eyewear.

Be sure the area in which you are working is well ventilated, to avoid a buildup of harmful paint fumes.

To reduce the risk of electric shock, do not expose the system to rain. Always store the system indoors. Do not operate the pump with the base cover removed.

ELECTRICAL GROUNDING

Electrical grounding is essential to reduce the risk of an electric shock or other serious bodily injury from static sparking. Read and follow the grounding instructions on page 6 of this manual.

This system is designed to be used at 250 psi (17.5 bar) MAXIMUM WORKING PRESSURE. Use only components or accessories which are designed for use with the PT2000 System.

Any misuse of this equipment, such as modifying parts, using incompatible paint or solvent, or using worn or damaged parts, can cause the equipment to rupture and result in serious bodily injury, fire, explosion and property damage.

Never alter or modify any part of this equipment; doing so could cause it to overpressurize or malfunction.

Check all parts of the system regularly and repair or replace any worn or damaged parts immediately.

AVOID POWER LINES

Avoid contacting any power lines with the extension. Contact with power lines could cause extremely serious bodily injury, including burns or electrocution.

EXTENSION MISUSE HAZARD

Do not attempt to modify the extension or roller frame, or to use parts which are not designed for use with this system. Use the extension only with the roller frame provided with this system.

Improper use of the extension, roller frame, hose or roller valve can result in component rupture or explosion and cause serious bodily injury.

HAZARD OF USING FLUIDS CONTAINING HALOGENATED HYDROCARBONS

Never use 1,1,1–trichloroethane,methylene chloride, other halogenated hydrocarbon solvents or fluids containing such solvents in this equipment. Such use could result in a serious chemical reaction, with the possibility of explosion, which could cause death, serious bodily injury and/or substantial property damage.

Consult your material suppliers to ensure that the fluids being used are compatible with aluminum and zinc parts.

307-730

AVERTISSEMENT

Assurez–vousque tous les utilisateurs de cet équipment lisent, comprennent et observent les avertissements et les instructions de ce manuel!

SECURITE GENERAL

Faites extrêmement attention de ne pas éclabousser de peinture, d’eau de rinçage sale ni de solvant dans les yeux. Portez de lunettes de protection.

Assurez-vousque l’endroit où vous travaillez est bien aéré afin d’éviter l’accumulation des vapeurs toxiques de peinture.

Pour réduire le risque de décharge électrique, n’exposez pas le système à la pluie. Rangez toujours le système à l’intérieur.

MISE A LA TERRE

Il est essentiel d’effecteur la mise à la terre pour réduire le risque de décharge électrique et de blessures sérieuses résultant des étincelles d’électricité statique. Lisez et observez les instuctions de mise à la terre, à la page 6 de ce manuel.

DANGERS POUVANT RESULTER DU MAUVAIS USAGE DE LA RALLONGE

N’essayez pas de modifier la rallonge ni la monture du rouleau; n’essayez pas non plus d’utiliser de pièces qui ne sont pas conçues pour aller avec ce système. N‘utilisez la rallonge qu’avec la monture de rouleau fournie avec le système.

L’utilisation incorrecte de la rallonge, de la monture de rouleau, du tuyau ou du robinet du rouleau peut entraîner la rupture de pièces ou une explosion et causer des blessures sérieuses.

DANGERS POUVANT RESULTER DU MAUVAIS USAGES DE L‘EQUIPMENT

Ce système est conçu pour être utilisé à une PRESSION MAXIMUM DE FONCTIONNEMENT de 17.5 bars (250 psi). N’utilisez que des pièces ou accessoires qui sont conçus pour être utilisés avec le système PT2000.

L’utilisation incorrecte de cet équipement, la modification des pièces, l’utilisation de peinture ou de solvant incompatibles, l’utilisation de pièces usées ou abîmées peuvent entrainer la rupture de l’équipement et causer des blessures graves, un incendie, une explosion et des dégâts matériels.

Ne changez et ne modifiez jamais aucune pièce du système et réparez ou remplacez les piéces usées ou abîmées immédiatement.

Vérifiez régulièrement toutes les pièces du système et réparez ou remplacez les pièces usées ou abîmées immédiatement.

EVITEZ LES LIGNES ELECTRIQUES

Evitez tout contact avec les lignes électriques! Ceci pourrait causer des blessures très graves, y compris des brûlures ou l’électrocution.

307-7303

ADVERTENCIA

Asegurarse de que todos los operadores de este equipo lean, entiendan y repeten las precauciones e instrucciones indicadas en este manual.

SEGURIDAD EN GENERAL

PELIGRO POR MAL USO DEL EQUIPO

Tener extremo cuidado de no salpicarse los ojos con pintura, agua de enjuague contaminada o solvente. Usar gafas protectoras.

Asegurarse de que el lugar de trabajo tenga buena ventilición, para evitar la acumulación de vapores de pintura nocivos.

Para reducir el riesgo de sufrir un choque eléctrico, no dejar este sistema expuesto a la lluvia. Siempre guardarlo bajo techo.

PUESTA A TIERRA

La puesta a tierra es esencial para reducir el riesgo de sufrir un choque eléctrico u otras lesiones corporales graves debido a chispas estáticas. Leer y seguir las instrucciones dadas en la pàgina 6 de este manual.

PELIGRO POR MAL USO

DE LA EXTENSION

No intentar modificar las extensión o el portarradillo, o usar piezas que no hayan sido diseñadas para usarse en este sistema. Usar la extensión solamente con el portarrodillo provisto con este sistema.

El uso indebido de la extensión, portarrodillo, manguera o gatillo del rodillo podría romper o hacer explotar el componente y causar graves lesiones corporales.

Este sistema está diseñado para una PRESION DE TRABAJO MAXIMA de 17.5 barías (250 lbs/pulg2). Usar componentes o accesorios diseñados para usarse con el sistema PT2000.

El uso indebido de este equipo, tal como modificación de las piezas, uso de pintura o solvente incompatible, o de piezas dañadas o desgastadas, podría causer la rotura del equipo y terminar en graves lesiones personales, incendio, explosión y daños a la propiedad.

Nunca alterar o modificar ninguna pieza del equipo; el hacerlo podría causar sobrepresión o malfuncionamiento.

Revisar con regularidad todas las piezas del sistema y reparar o sustituir de inmediato las que estén dañadas o desgastadas.

PROCURAR NO TOCAR

LOS CABLES ELECTRICOS

¡Procurar no tocar ningún cable elecrico! De llegar a suceder esto se podrían sufrir lesiones corporales sumamente graves, incluso quemaduras o electrocución.

4307-730

PT2000 PRESSURE ROLLER SYSTEM DESCRIPTION

PRIMING TUBE

SUCTION HOSE

INLET VALVE

PRIMING VALVE

MOTOR

PAINT FILTER

POWER SUPPLY CORD

ON/OFF SWITCH

25 FT. (7.6 M) HOSE

ROLLER COVER

ROLLER VALVE

18 INCH EXTENSION

 

9 INCH ROLLER FRAME

 

0285

Motor

Inlet Valve

The motor drives the connecting rod which moves the diaphragm.

Pressure Switch

The pressure switch at the pump outlet turns the motor on and off to control paint pressure.

Diaphragm

The diaphragm is the heart of the pump. Driven by the connecting rod and motor , the movement of the diaphragm draws paint through the suction hose and to the outlet valve.

Priming Valve

The priming valve assists in priming the pump during startup. Turning the priming valve counterclockwise causes the paint to drain directly back into the pail through the priming tube. T urning the knobclockwise causes the paint to flow through the fluid outlet valve and to the hose, roller valve and extension.

Outlet Valve

The outlet valve has a ball check which prevents paint from flowing backwards into the pump. This helps keep an even supply of paint to the roller each time you trigger the roller valve.

As the diaphragm draws paint from the suction tube, the paint passes through the inlet valve which opens to allow paint into the pump.

Outlet Hose

The hose has swivel-typecouplings for easy assembly. A larger diameter outlet hose andchemical-resistantoutlet and suction hoses are available. See ACCESSORIES on page 19.

Roller Valve

The roller valve controls paint flow to the roller by triggering it on and off.

Pressure Roller

The pressure roller has an 18 inch extension. Two roller covers, one 1/2 inch nap for smooth surfaces, and one 3/4” nap for semi–roughsurfaces, are provided. Different lengths and adjustable extensions and different types of roller covers are available. See ACCESSORIES on page 19.

307-7305

SETUP

PRIMING TUBE

SUCTION HOSE

INLET VALVE

MOTOR

POWER SUPPLY CORD

ON/OFF SWITCH

SPRING GUARD MUST BE

AT ROLLER VALVE INLET

USE TWO WRENCHES

TO TIGHTEN

ROLLER VALVE

TRIGGER

18 INCH EXTENSION

9 INCH ROLLER FRAME

Fig 1

PRIMING VALVE

PAINT FILTER

USE TWO WRENCHES

TO TIGHTEN

25 FT. (7.6 M) HOSE

BE SURE GASKETS ARE

INSTALLED AT THESE JOINTS

USE TWO WRENCHES

TO TIGHTEN

ROLLER COVER

HAND TIGHTEN ONLY

 

TO AVOID CRACKING

 

ROLLER COVER

0285

1.Remove all parts from the boxes and assemble them as shown in Fig 1, following the notes on the drawing.

2.Prepare the paint according to the manufacturer ’s recommendations. Remove any skin that may have formed on the top of the paint. If necessary, thin the paint.

WARNING

Never remove the third (grounding) pin of the power supply cord. Be sure the outlet is properly grounded. In the event of an electrical short circuit, grounding reduces the risk of an electric shock by providing an escape wire for the electric current.

Inspect the power supply cord and extension cord before each use. Be sure they are in good condition and have undamaged three-pinplugs. Replace immediately if either cord shows signs of wear or damage.

3.Plug the power supply cord into a properly grounded, 120 V electrical outlet. See Fig 2. Do not use an adapter. All extension cords must have three wires. Use the chart below for selecting the appropriate

wire gauge for the extension cord.

6307-730

Cord Length

Extension

feet

(meters)

Wire Gauge

1–100

(1–30)

18

100–200

(30–61)

16

200–300

(61–92)

14

over 300

(over 92)

12

GROUNDED

OUTLET

Fig 2

GROUNDING PIN

0286

 

 

 

 

STARTUP

WARNING

Pressure Relief Procedure

To reduce the risk of serious bodily injury, including injury from moving parts, or electric shock, always follow this procedure whenever you shut off the system, when checking or servicing any part of the system and whenever you stop painting.

1.Turn the ON/OFF switch to OFF.

2.Unplug the power supply cord.

3.Trigger the roller valve to relieve pressure.

If you suspect that pressure is not fully relieved after following the steps above, open the priming valve 2 turns counterclockwise.

1.Place the suction hose in the pail of paint.

2.Plug in the sprayer.

3.Open the priming valve 2 turns counterclockwise.

4.Turn the ON/OFF switch ON.

5.You can see the paint being drawn into the suction hose (if the hose is clean). As soon as you see paint flow through the priming tube, close the priming valve. This usually takes less than 30 seconds.

CAUTION

Failure to completely close the priming valve after the system is primed will cause the valve to erode, greatly shortening the valve life.

NOTE: If your system is hard to prime, first try to force feed the suction tube. Hold the suction tube in a vertical position and pour paint into it. Turn on the system. If the system does not prime within one minute, shut it of f. Heavy viscosity paint may need to be thinned. Be sure to follow the paint manufacturer’s recommendations on thinning.

6.Trigger the roller valve to prime the outlet hose and extension. Once primed, the motor will run when there is paint demand, but appears to shut itself of f when there is no paint demand.

NOTE: An occasional start and stop of the motor when the roller valve is not triggered is normal.

OPERATION

WARNING

To reduce the risk of electric shock, do not expose the system to rain. Always store the system indoors. Do not operate the pump with the base cover removed.

CAUTION

Always allow cold equipment to warm to room temperature before using it to prevent damaging the system.

1.With the system fully primed, trigger the roller valve briefly until paint comes to the roller.

2.Experiment with triggering and rolling the paint until you determine just how often you need to trigger the roller valve to keep an even flow of paint to the roller.

3.Whenever you stop painting, turn the ON/OFF switch to OFF, and trigger the roller valve. Then elevate the roller end of the extension to prevent paint from draining out the roller end.

4.Thoroughly flush the system immediately after each use to keep it in good working order. See page 8.

307-7307

MAINTENANCE

CAUTION

Thorough flushing and proper maintenance are essential to keep your system working properly.

Improper flushing or maintenance may prevent the system from working the next time you need it, and may result in costly damage to the system.

Always flush your system thoroughly and immediately after each use.

Always drain all water out of the roller valve and extension and leave the system filled with mineral spirits to prevent corrosion.

NOTE: A Garden Hose Flush Adapter, P/N220–231,is included. This adapter is placed at the pump inlet and uses a standard city water supply to aid in flushing. Instructions on how to use it are included with the adapter.

Flushing Procedure (Latex Paint Only)

1.Turn the ON/OFF switch to OFF.

2.Trigger the roller valve and roll out the excess paint from the roller onto a wall or newspaper. Remove the roller cover and dif fuser, and soak these parts in a pail of warm, soapy water.

3.Put the suction tube in a pail of warm, soapy water. Hold the roller frame over the paint pail, turn on the system, and trigger the roller valve to drain and save the paint in the hoses. See Fig 3. Release the trigger and shut of f the pump as soon as all the paint is drained. This avoids contaminating the paint with the flushing water.

4.Now hold the roller frame over the flushing pail. Turn on the pump and trigger the roller valve. Circulate the solution for three to five minutes (five to ten minutes if using a cold solution). Open the priming valve for a few seconds to clean the priming tube. Close the priming valve.

5.Raise the suction hose above the water and run the pump for a few seconds to drain the flushing solution. Shut off the pump.

6.Wash off all external parts of the hoses, extension, roller frame, roller valve and pump.

7.Flush again with clean, clear water. Change the water as necessary , until the system is thoroughly cleaned.

8.Finally, flush the system with clean mineral spirits for just a few seconds. Open the priming valve and turn off the pump. Some mineral spirits must be left in the system to prevent corrosion.

CAUTION

Never leave water or water-basedpaint (latex) in the system. To prevent corrosion in the pump, extension, roller valve and roller frame, your final flush must be with mineral spirits.

9.Thoroughly rinse the roller cover inside and out. Clean the diffuser as explained on page 9.

10.Oil the needle in the roller valve and trigger the valve a few times to distribute the oil. See Detail A, Fig 3.

DETAIL A

 

OIL

 

 

REGULARLY

0287

Fig 3

 

0288

8307-730

Flushing Procedure (Oil-basedPaint Only)

NOTE: Follow the instructions on page 8, except use mineral spirits.DO NOT heat the mineral spirits.

Installing and Removing a Roller Cover (See Fig 4.)

1.To install a cover, hold the diffuser and unscrew the retainer nut. Pull the diffuser off the frame. Slide the cover over the dif fuser. Install the dif fuser on the frame and reinstall the nut. Be careful not to over tighten the nut.

2.To remove a cover, hold the cover and unscrew the retainer nut. Slide the cover and diffuser off the roller frame, and press on the end of the diffuser to separate it from the cover.

3.To clear an obstruction in the frame, or for more thorough cleaning, remove the setscrew. Be sure to reinstall the setscrew after cleaning.

RETAINER

DIFFUSER

NUT

SEGMENT

ДДДДДДДДДДД

ДДДДДДДДДД

 

SETSCREW

U–CUPPACKING

FRAME

 

Lips must face diffusers,

 

as shown.Grease lightly

 

with petroleum jelly.

 

Fig 4

0244

Cleaning the Roller Diffuser (See Fig 5.)

1.For water-basepaint (latex), vigorously shake the diffuser in a pail of hot, soapy water to remove wet paint. Foroil-basepaint, use unheated mineral spirits. Use a soft brass bristle brush to remove dried paint.

2.Disassemble the dif fuser if further cleaning is needed.

a.Remove the two screws. Pull off the outside end cap. Disassemble all parts and clean thoroughly in water or mineral spirits.

b.Install the inside end cap on the frame. Lightly grease the u–cuppacking with petroleum jelly . Slide the diffuser segments onto the roller frame. Twist and press the last diffuser segment to snap the pieces together.

c.Install the outside end cap and the two screws. Holding the inside end cap, press on the two screws and rotate the diffuser segments to seat the screws. Tighten the screws evenly into the inside end cap. Be sure there is no binding and that the diffuser segments move freely.

INSIDE END CAP

SCREW

Ç

 

DIFFUSER

OUTSIDE

 

END CAP

Fig 5

SEGMENT

0245

307-7309

TROUBLESHOOTING GUIDE

WARNING

Pressure Relief Procedure

To reduce the risk of serious bodily injury, including injury from moving parts, or electric shock, always follow this procedure whenever you shut off the system, when checking or servicing any part of the system and whenever you stop painting.

1.Turn the ON/OFF switch to OFF.

2.Unplug the power supply cord.

3.Trigger the roller valve to relieve pressure.

If you suspect that pressure is not fully relieved after following the steps above, open the priming valve 2 turns counterclockwise.

CAUTION

Thoroughly flush the system after each use to reduce down time and costly repair bills.

NOTE: If you are not able to determine the cause of the problem, or the problem and solution is not discussed in this chart, return the system to an authorized service agency for repair.

PROBLEM

CAUSE

SOLUTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pump will not prime, or takes long time to prime

Clogged suction tube filter

Clean.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Paint too thick

Thin; try pouring paint into suction tube.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outlet valve spring worn or damaged

Pour paint into suction tube and try to prime system.

 

 

If it doesn’t prime in one minute, replace the outlet

 

 

spring. See Outlet Valve, page 13.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Inlet valve stuck or damaged

Depress valve gently and pour in about 1 teaspoon

 

 

mineral spirits. Try to prime pump. Replace valve if

 

 

necessary. See Inlet Valve, page 13.

 

 

 

 

 

 

 

 

DEPRESS LIGHTLY.

 

 

 

 

 

 

 

 

POUR IN 1 TEASPOON

 

 

 

 

 

 

 

 

MINERAL SPIRITS.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0289

 

 

 

 

 

 

Loose inlet hose nut

Tighten

 

 

 

 

 

Pump will not start

Power cord unplugged

Plug in.

 

 

 

 

 

 

ON/OFF switch turned off

Turn on.

 

 

 

 

 

 

Damaged motor

Replace. See page 15.

 

 

 

 

 

 

Fuse burned out.

Replace. See page 12. If it burns out again soon, re-

 

 

 

turn the system to an authorized repair agency for re-

 

 

 

pair.

 

 

 

 

 

Low or no paint flow

Clogged roller cover , diffuser, roller frame,

Clean thoroughly after each use. See Flushing on

 

 

roller valve, or hose

page 8.

 

 

 

 

 

 

Using more than 25 ft. (7.6 m) of 1/4” ID hose

Use up to 100 ft. (30 m) of 3/8” ID hose. See CAU-

 

 

 

TION on page 2.

 

 

 

 

 

 

Loose inlet hose nut

Tighten.

 

 

 

 

 

 

Worn or damaged priming valve

Replace. See page 14.

 

 

 

 

 

 

Priming valve is open

Close.

 

 

 

 

 

 

Paint too thick

Thin: Follow manufacturer‘s recommendations.

 

 

 

 

 

 

Damaged pressure switch

Replace. See page 13.

 

 

 

 

 

 

Worn inlet and/or outlet valve

Replace. See page 13.

 

 

 

 

 

Pump runs after roller valve trigger is released

Worn or damaged pressure switch

Replace. See page 13.

 

 

 

 

 

 

Worn or damaged inlet valve

Replace. See page 13.

 

 

 

 

 

 

Worn or damaged outlet valve

Replace. See page 13.

 

 

 

 

 

 

Worn or damaged priming valve

Replace. See page 14.

 

 

 

 

 

 

Worn roller valve packings or needle

Repair. See page 11.

 

 

 

 

 

10 307-730