Graco Inc 311772H User Manual

Repair

Interior Texture Sprayers

RTX 900 & RTX 1250

For Water-Based Materials Only

Models: 254974 and 254975

70 psi (0.49 MPa, 4.9 bar) Maximum Fluid Working Pressure

311772H

Important Safety Instructions

Read all warnings and instructions in this manual. Save these instructions.

Related Manuals

311777

311768

ti8867a

Model 254975 Shown

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441

Conforms to ANSI/UL standard 1450

Warnings

The following are general warnings related to the setup, use, grounding, maintenance and repair of this equipment. Additional, more specific warnings may be found throughout the body of this manual where applicable. Symbols appearing in the body of the manual refer to these general warnings. When these symbols appear through the manual, refer back to these pages for a description of the specific hazard.

Warnings

Fire and Explosion Hazard

Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and result in fire or explosion and serious injury.

• The system is for use with water-based materials only. Only use fluids compatible with the equipment. Refer to Technical Data of all equipment manuals. Read fluid and solvent manufacturers warnings.

• Ground all equipment in the work area. See Grounding and Electrical Requirements, page 6.

• If there is any static sparking or you feel an electric shock while using this equipment, stop spraying immediately. Do not use the equipment until you identify and correct the problem.

• Keep work area free of debris, including solvent, rags and gasoline.

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

• Keep a fire extinguisher in the work area.

Equipment Misuse Hazard

Equipment misuse can cause equipment to rupture, malfunction, or start unexpectedly and cause serious injury.

• Before operating this equipment, read all manuals, tags, and labels, including material labels and instructions.

• Do not expose system to rain. Always store system indoors.

• Do not alter or modify equipment.

• Do not spray cementitious materials.

• Do not exceed maximum working pressure of lowest rated component in your system.

• Check equipment daily. Repair or replace worn or damaged parts immediately.

• To reduce risk of serious injury, including electric shock and splashing fluid in eyes, follow Pressure Relief Procedure on page 6 before servicing the unit.

• Do not kink or over bend hoses or 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 130° F (55° C) or below -35° F (-37° C).

• Air hoses at the compressor end, can get very hot! Allow sprayer to cool down 15 minutes before removing air hose.

• Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local, state and national guidelines.

• Never directly inhale compressed air. Compressed air may contain toxic vapors.

2 311772G

Warnings

Electric Shock Hazard

To reduce the risk of electric shock:

• Be sure sprayer is adequately grounded through electrical outlet, page 6.

• Use only 3-wire, extension cords.

• Make sure ground prongs are intact on sprayer and extension cords.

• Do not operate with cover removed.

• Turn off sprayer. Follow Pressure Relief Procedure, page 6, and unplug unit, before removing any parts.

Pressurized Equipment Hazard

Fluid from gun, leaks or ruptured components can splash in the eyes or on skin and cause serious injury.

• Follow Pressure Relief Procedure, page 6 when you stop spraying and before cleaning, checking or servicing.

• Do not point spray gun at anyone; put hand, fingers or rag over nozzle, or stop or deflect leaks with your hand, body, glove, or rag.

• Wear protective clothing, gloves, and eyewear.

Cleaning Solvent Hazard with Plastic Parts

Use only compatible water-based solvents to clean plastic structural or pressure-containing parts. Many solvents can degrade plastic parts to the point where they could fail. Such failure could cause serious injury or property damage. See Technical Data on page 33 of this instruction manual and in all other equipment manuals. Read fluid and solvent manufacturer’s warnings.

Burn Hazard

Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe burns, do not touch hot fluid or equipment. Wait until equipment/fluid has cooled completely.

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

311772G 3

Warnings

CAUTION

Water or material remaining in unit when temperatures are below freezing can damage motor and/or delay pump startup.

To insure water and material are completely drained out of unit:

1. Remove material line from sprayer.

ti9016a

ti9010a

2. Tip sprayer up as shown.

Before adding material or starting unit in cold weather, run warm water through pump.

Before adding material to hopper, install burp guard. When only a small amount of material remains in the hopper, the burp guard prevents material from shooting out when the unit is turned off. This material could splash in the operator’s eyes or on skin, or into the air.

4 311772G

Component Identification

Model 254975 Shown

Component Identification

Item Component Item Component

A Handle N Burp Guard

B Toolbox P Material/Air Hose

C Power Cord (120V, 25 ft) Q Accessories Bag

D Side Pump Access Panel (RTX 1250 Only) R Material Thickness Gauge

RotoFlex

F Pump Hose Outlet T Hose Plug

G Air Hose Outlet U Touch-Up Hopper (3/4 gallon)

H Material Flow Gauge V Gun Plug

J Material Flow Control W Air Control

K ON/OFF Switch bb Hopper Clamp

L Selector Switch (Hopper Gun/Sprayer) cc Gun Plug Clip

M Material Hopper - 10 gallon, RTX 900

Material Hopper - 12 gallon, RTX 1250

™

II Pump (inside)

SNozzle (4 Total)

dd Hopper Gun

ti8939a

311772G 5

Component Identification

Pressure Relief Procedure

To reduce risk of injury, follow this procedure whenever you see this symbol throughout this manual, Also, perform this procedure whenever you:

• Stop spraying

• Check or repair any part of this system

• Install or clean spray nozzle

1. Turn Power Switch OFF.

ti9221a

2. Trigger gun into material hopper.

Grounding and Electrical Requirements

This sprayer must be grounded. Grounding reduces the risk of electrical shock by providing an escape wire for the electrical current. The sprayer cord includes a grounding wire with an appropriate grounding plug. The plug must be plugged into an outlet that is properly installed and grounded in accordance with all local codes and ordinances.

Check with a qualified electrician or if grounding instructions are not completely understood, or if in doubt as to whether the product is properly grounded. Do not modify plug provided; if it will not fit the outlet, have proper outlet installed by a qualified electrician.

120V AC Systems

• This equipment requires a 120V AC, 60 Hz, 15A circuit with a grounding receptacle. Do not use an adapter with this product.

3. Open gun air valve.

ti8528a

ti9084a

Extension Cords

• Use only an extension cord with an undamaged, 3-prong plug.

• For 25 to 50 ft (7.6 to 15.2 m) cords, use 3-wire, 14 AWG (1.5 mm

• For up to 100 ft. (30.48 m) cord, use 3-wire, 12 AWG (2.5 mm

) minimum.

Auxiliary Air Compressor

Do not use an auxiliary air compressor with this spray system.

Generator Requirements

3500 W (3.5 KW) minimum.

Hose Size and Length

The system comes with a hose set consisting of a 3/4 in. ID x 25 ft (25 mm x 7.6 m) material hose and a 3/8 in-ID air hose.

6 311772G

Shroud Removal

Disassembly

1. Relieve Pressure, page 6.

2. Unplug sprayer from outlet.

ti2810b

3. Loosen bottom hopper fitting by hand and pull hopper up and off from handle.

ti8871a

4. Loosen and remove 2 knobs (14) on sprayer handle (12).

8. Loosen and remove screw (70) from lower right corner of side access panel (RTX1250) only.

ti8874a

9. Loosen knob (42) on side access panel and swing open door.

ti8875a

5. Spread handle bars apart and pull up to remove from sprayer.

6. Loosen screws (30) and screw (31) from toolbox and remove toolbox (2) from sprayer.

ti8884a

7. Loosen screws (31) on shroud.

ti8872a

10. Use screwdriver to remove second screw (30).

ti9283a

11. Remove two shroud halves (5 and 7) from sprayer.

ti8883a

ti8882a

311772G 7

Shroud Removal

Reassembly

1. Angle left shroud half (5) into base and push down into place. Then replace right shroud half (7).

ti9015a

2. Replace and tighten second screw (30).

ti9283a

5. Replace toolbox (2) and tighten screws (30) and screw (31).

ti8884a

6. Tighten screws (31) on shroud.

ti8882a

7. Spread handle bars apart and slide handle down into place.

8. Tighten 2 knobs (14) on sprayer handle (12).

3. Swing access door down (RTX 1250) and tighten knob (42).

ti8938a

4. Tighten screw (70) into lower right corner of side access plate.

ti8874a

ti8875a

9. Replace hopper and tighten hopper fitting by hand until snug.

8 311772G

RotoFlex™ II Pump (RTX 900)

Disassemble

1. Relieve Pressure, page 6.

2. Unplug sprayer from outlet.

ti2810b

3. Remove Shroud, page 7.

4. Loosen and remove screw (28) on hose bracket.

ti9009a

5. Remove hose bracket (25).

7. Grab pump hose (16) from side of unit and remove pump hose by hand.

ti8949a

Reassemble

1. Bend hose (16) so colored dots on hose fittings face each other.

ti9331a

2. Slide new pump hose (16) over rollers. Move pump rollers by hand until or flip power switch to rotate rollers until they are positioned correctly with pump hose.

ti8881a

ti8868a

3. Feed pump fittings through front access panel

6. Slide pump fittings over and push through keyhole

keyhole slots and slide into place.

slots.

4. Replace hose bracket (25) to lock pump hose fittings into place.

5. Replace hose bracket (25) and tighten screw (28).

6. Replace Shroud, page 7.

7. Break in new pump by adding 1 cup of water to pump and running dry for 3 minutes.

ti8869a

311772G 9

RotoFlex™ II Pump (RTX 1250)

Disassemble

1. Relieve Pressure, page 6.

2. Unplug sprayer from outlet.

ti2810b

3. Loosen knob (42) on side access panel.

ti8870a

4. Remove screw (70) from side access panel.

6. Loosen and remove knob (42) on hose bracket (25).

ti8945a

7. Remove hose bracket (25).

ti9288a

8. Slide pump fittings over and through keyhole slots.

ti8874a

5. Pull access panel (13) out to release 3 fastening tabs and flip up to expose side access to pump.

ti8872a

ti8869a

9. Grab pump hose (16) from side access panel and remove pump hose from unit.

ti9333a

10 311772G

RotoFlex™ II Pump (RTX 1250)

Reassemble

1. Bend hose (16) so colored dots on hose fittings face each other.

ti9331a

2. Slide new pump hose (16) in from side access panel. Move pump rollers by hand until or flip power switch to rotate rollers until they are positioned correctly with pump hose.

ti8868a

3. Replace hose bracket (25) to lock pump hose into place.

5. Flip side access panel (13) down and tighten knob (42).

ti8938a

6. Replace and tighten screw (70) from side access panel.

ti8874a

7. Break in new pump by adding 1 cup of water to pump and running dry for 3 minutes.

ti9288a

4. Tighten hose bracket knob (42).

ti8945a

311772G 11

+ 23 hidden pages