Graco 310645P Rtx 1500 Users Manual Electric Texture Sprayer, Repair Parts (English)

2015-04-02

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Repair and Parts

RTX 1500 Electric Texture Sprayer

310645P
EN

- For Water-Based Materials Only (Consult your Material Supplier for Warnings and Application Requirements)

Models: Page 2
Maximum Working Air Pressure: 45 psi (3.1 bar)
Maximum Working Fluid Pressure: 100 psi (6.9 bar)

Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.

NOTICE
Use RTX 1500 non-bleeder texture gun 248091.
All other guns will damage sprayer.

ti4305a

Models

Models
Manual
Model

Country

Electric
Requirements

Languages
287328*
Operation

248201

120V, 60 Hz, 15 A

248536

110V, 60Hz, 15A

Gun

N. America

310624

310694

310616

English

310624

310694

310616

English

310616

French

248370 / 248315

230V. 50 Hz, 10 A

Europe

310624

248370

230V. 50 Hz, 10 A

Europe

310624

248370

230V. 50 Hz, 10 A

Europe

310625

248370 / 248315

230V. 50 Hz, 10 A

Europe

310625

Italian

248370

230V. 50 Hz, 10 A

Europe

310625

Portuguese

248370 / 248315

230V. 50 Hz, 10 A

Europe

310625

German

248315

230V. 50 Hz, 10 A

Europe

310697

Swiss

248315

230V. 50 Hz, 10 A

Europe

310697

Danish

Dutch
310616

Spanish

248370

230V. 50 Hz, 10 A

Europe

310697

Norwegian

248370

230V. 50 Hz, 10 A

Europe

310697

Swedish

248370

230V. 50 Hz, 10 A

Europe

310698

Polish

248370

230V. 50 Hz, 10 A

Europe

310698

Russian

248370

230V. 50 Hz, 10 A

Europe

310698

Greek

248315

230V. 50 Hz, 10 A

Asia

310699

Chinese

248315

230V. 50 Hz, 10 A

Asia

310699

Japanese

248315

230V. 50 Hz, 10 A

Asia

310699

Korean

248315

230V. 50 Hz, 10 A

Australia

310699

310694

310616

English

Auxiliary Air Hookup Kit

RELATED MANUALS
Model
ALL

Country
ALL

Manual
310645

Languages
English

The following are general Warnings related to the safe setup, use, maintenance and repair of this equipment.
Additional, more specific warnings may be found throughout the text of this manual where applicable.

310645P

Warnings

Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks.
When these symbols appear in the body of this manual, refer back to these Warnings. Product-specific hazard
symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.

WARNING
Fire and Explosion Hazard
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Use equipment only in well ventilated area.
• Keep work area free of debris, including solvent, rags, and gasoline.
• Ground equipment in the work area. See Grounding instructions.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment
until you identify and correct the problem.

Equipment Misuse Hazard
Equipment misuse can cause death or serious injury.
•

Do not exceed maximum working pressure or temperature rating of lowest rated system component. See Technical Data, in all equipment manuals.

•

Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings.

•

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

•

Do not alter or modify this equipment.

•

Use the equipment only for its intended purpose. Call your Graco distributor for information.

•

For professional use only.

•

Route hoses away from traffic areas, sharp edges, moving parts and hot surfaces.

•

Do not use hoses to pull equipment.‘

•
•

Comply with all applicable safety regulations.
Electric Shock Hazard
Improper grounding, setup, or usage of the system can cause electric shock.
• Turn off and disconnect power cord before servicing equipment.
• Use only grounded electrical outlets.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on sprayer and extension cords.

310645P

Warnings

WARNING
SKIN INJECTION HAZARD
High-pressure fluid from gun, 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 surgical treatment.
• Do not point gun at anyone or at any part of the body.
• Do not put your hand over the spray tip.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Do not spray without tip guard and trigger guard installed.
• Engage trigger lock when not spraying.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.

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 34 of this instruction manual and in all other
equipment manuals. Read fluid and solvent manufacturer’s warnings.
Moving Parts Hazard
Moving parts can pinch or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,
follow the Pressure Relief Procedure in this manual. Disconnect power or air supply.

Personal Protective Equipment
Wear appropriate protective equipment when operating, servicing or when in the operating area of this
equipment to help protect yourself from serious injury, including eye injury, inhalation of toxic fumes,
burns and hearing loss. This equipment includes, but is not limited to:
•

protective eye wear

•

clothing and respirator as recommended by fluid and solvent manufacturer

•

hearing protection

•

gloves

CALIFORNIA PROPOSITION 65
The engine exhaust from this product contains a chemical known to the State of California to cause
cancer, birth defects or other reproductive harm.

NOTICE
Water or material remaining in unit when temperatures are below freezing can damage pump and/or delay startup.
To insure water and material are completely drained out of unit:
• Remove hose from material outlet,
• Tip sprayer forward 45° to allow material (water) to flow out of pump inlet.
• Before adding material or starting unit in cold weather, circulate warm water through pump.

310645P

Component Identification

C
R

P
K

A
E

ti4500a

S
W

U
V

L
T

310645P

Component Identification

Component Identification
ITEM

COMPONENT

Main Power Switch

Nozzle Storage

Hopper

Hopper Connect/Disconnect

Graco RotoFlex™ HD Pump

Material Outlet

Air Outlet

Fluid Flow Regulator and Pressure Gauge

Gun Nozzle (5 sizes)

Gun (see manual 310616)*

Prime Switch

Power Cord

Pump Access Screw

Hose - 25-ft.

Material Thickness Gauge

Cleaning Ball

Spare Hose Gaskets

310645P

Preparation

Preparation
Pressure Relief Procedure

Grounding and Electric
Requirements

1. Turn Main Power Switch
(A) OFF.

The sprayer must be grounded. Grounding reduces the
risk of electrical shock by providing an escape wire for
the electrical current.

2. Turn fluid flow regulator
(K) all the way down to
reduce pressure.
•
K

The sprayer cord includes a
grounding wire with an appropriate grounding prong.

Ground

ti4303a

3. Open gun air valve (aa).

ti4295a

•

The plug must be plugged
into an outlet that is properly
installed and grounded in
accordance with all local
codes and ordinances.
ti4296a

ti4000a

•

Do not modify plug! If it will
not fit in outlet, have
grounded outlet installed by a
qualified electrician.

•

Sprayer model electric
requirements are provided on
page 2.

4. Trigger gun, spraying material back
into hopper (C).

ti4294a

310645P

ti4297a

Extension Cords
•

Only use an extension cord
with an undamaged 3-prong
plug.

•

For up to 100 ft (30.48 m) cord,
use 3-wire, 12 AWG (2.5 mm2)
minimum.

Ground

ti4295a

Preparation

Auxiliary Air Compressor

Hose Lengths

•

Use Auxiliary Air Hookup Kit 287328 when additional atomization air is necessary.

NOTICE
Attaching auxiliary air to sprayer without using the
Auxiliary Air Hookup Kit will damage sprayer.

Generators

The system comes with a twin line hose set consisting of a 1 in. ID x 25 ft (25 mm x 7.6 m) material
hose and a 3/8 in. ID air hose. Additional hose sections can be added. Total final length of hose used
should not exceed 100 feet in length.
NOTICE
Sprayer air hose fitting can get hot! Allow sprayer to
cool down 5 minutes before removing air hose.

7500 W (7.5 KW) minimum.
Tips for Using Generators

•

Before running sprayer, make sure it is at room temperature. This will reduce startup current.

•

Run generator at full throttle.

310645P

Removing and Replacing Hopper, Front and Back Covers

Removing and Replacing Hopper, Front and Back
Covers
Front Cover

Before performing any service on sprayer
always:
•

Read all warnings, page 3.

Removing Cover

•

Read operating instructions manual, page 2.

1. Remove hopper.

•

Relieve Pressure, page 7.

•

Turn main power switch (A) OFF.

2. Unscrew
and remove
knob (S).

•

Unplug sprayer from outlet.

•

Remove air and material hoses.

•

Clean sprayer. See Operation Manual 310624 or
310625.

Hopper
Removing Hopper
1. To remove hopper loosen fitting. Fittings are
hand-tightened
and should not
require tools to
loosen.

3. Place you
hand under
front, bottom edge of
cover.
(3a) Lift
cover up,
(3b) then
S
pull bottom
toward you
and out to remove cover.

ti4408a

Replacing Cover

2. Lift hopper
straight up, off
frame.

ti4503a

1. Place your
hand under
front, bottom
edge of
cover. (1a)
Position top
1a
edge of
cover under
top metal lip
1b
on sprayer
frame.
(1b) Then
S
push up on
cover so
lower plastic edge of cover has room to clear front
metal frame and slide cover into place. To position
cover correctly, it will go in at an angle.

ti4411a

Replacing Hopper
1. To replace hopper, position
drain over fitting as far as it
will
go, making sure
identification
label faces out.
2. Hand tighten fitting.

310645P

2. Replace knob (S). Hand tighten fitting.
ti4504a

3. Replace hopper.

Removing and Replacing Hopper, Front and Back Covers

Back Cover
To access the motor and all other components, it is necessary to remove the hopper, front and back covers.

Removing Cover
1. Completely
remove 6
screws (2 on
top and each
side) from
cover.
ti4430a

2. Lift cover up
and then tilt it
back and off
sprayer frame.

Replacing Cover
1. To reposition
cover on sprayer
frame, tip the
cover back,
toward you and
slide it down, into
place in the base
of the frame. Then
push the top back
into place. Align
screw holes in
side and top of
cover with holes in
frame.

ti4432a

2. Replace and
tighten screws.

ti4431a

ti4433a

310645P

RotoFlex™ HD Pump

RotoFlex™ HD Pump
Use RotoFlex HD Pump Replacement Kit 287314.
NOTE: After replacing RotoFlex HD Pump hose, always
follow Hose Break-In Procedure, page 13, before operating sprayer.

4. Rotate pump assembly sideways. Pull
entire assembly out of
front of sprayer frame.

Disassembly
First read and follow instructions in the Before performing any service on sprayer section, page 9.
ti4376a

Then remove hopper and front cover, page 9.
1. Loosen and remove
hose extension.

ti4377a

5. Separate the inner and
outer hose brackets.

ti4378a

2. Loosen and remove
knob.

ti4374a

6. Slide hose ends out of
slots in outer hose
bracket (slide out of
short slot first).

7. Pull hose out of inner
hose bracket.

3. Slide RotoFlex HD
hose off rollers.

ti4519a

8. Discard pump hose.

ti4379a

310645P

RotoFlex™ HD Pump

Reassembly
1. Bend and kink new
pump hose from kit in
the middle as shown,
making sure dots on
hose fittings face each
other.

5. Replace bracket
assembly in housing
making sure the
mounting screw
hole, located in the
top center of the
inner plate, faces up.

DOTS

ti4383a

6. Slide pump hose
around rollers. Make
sure the rollers are
horizontally parallel
to each other.

ti3127a

2. Insert hose ends
through holes in inner
hose bracket, keeping
dots on fittings facing
each other and kinked
portion of hose horizontal to the underside of bracket.

ti4520a

7. Slide feet on the bottom of hose bracket, into
the slot on the bottom of
sprayer.

alignment
holes

ti4429a

3. Slide hose ends into
outer hose bracket,
making sure dots on
fittings face each other
and alignment holes
are together (slide into
long slot first).

8. Replace knob. Hand
tighten.
9. Reattach hose extension.
10. Replace front cover and
hopper. See Removing
and Replacing Hopper,
Front and Back Cover,
page 9.

4. Slide plates together,
inserting inner plate in
outer plate, matching
alignment holes.

ti4381a

ti4386a

310645P

RotoFlex™ HD Pump

Hose Break-In Procedure
3. Turn power switch (A)
on.

1. Make sure fluid flow regulator (K) is turned all the way
down.

ti4653a

4. Hold in prime switch
(P).
P

ti4303a

2. Pour approximately 1 gallon
hot water in
sprayer hopper
to lubricate the
pump.

WATER
ti4364a

5. Turn fluid flow regulator (K) up to full pressure.
ti4301a

6. Run sprayer dry for 1 to
1-1/2 minutes.
K

ti4655a

310645P

Compressor and Motor Repair

Compressor and Motor Repair
For 120 V sprayer use Compressor and Motor Replacement Kit, 287315.

4. Loosen 4 bolts (2 each
side) to loosen tension
on belt.

For 230 V sprayer use Compressor and Motor Replacement Kit, 287344.
Kits include motor/compressor and mounting hardware.

Disassembly

ti4388b

First read and follow instructions in the Before performing any service on sprayer section, page 9.

5. Slide belt off motor
pully.

Then remove hopper, front and back covers, page 9.
Remove hose extension and RotoFlex HD Pump
assembly from frame, page 11.
1. Remove two screws and
access cover on the left
side of the motor.

ti4459a

6. Disconnect air line from
compressor to cooler
and remove.

ti4457a

2. Remove ground nut and
disconnect green ground
wire.

ti4460a

7. Remove 3 screws on
right side of cover and
remove cover.

ti4458a

3. Disconnect black and
white wires to motor.

ti4479a

ti4405a

ti4478a

310645P

Compressor and Motor Repair

Reassembly

8. Loosen 2 shoulder
bolts about 2-3 turns.
Do not remove them.

1. Using two new shoulder
bolts and rubber mounts
included in your kit, insert
bolts into openings until
they start to snug up on
rubber mounts.

ti4463a

ti4465a

Remove single shoulder bolt on other side
of motor completely.

2. Slide new motor into
sprayer frame, aligning
motor frame opening
under bolts. Tighten
bolts.

ti4425a

ti4468a

3. Replace shoulder
bolt on left side with
new bolt from your
kit. Tighten bolt.

10. Slide out motor
assembly.

ti4424a

4. Replace end cover.
Replace and tighten 3
screws.

ti4462a

11. Completely remove
old shoulder bolts and
rubber mounts.

ti4484a

ti4464a

12. Thoroughly clean inside housing to remove dust
and debris.
ti4485a

5. Reattach air line to
cooler and compressor.
Tighten fitting.
6. Slide belt over pulleys
and set tension. See
Replacing Belt, page 19.
ti4516a

310645P

Compressor and Motor Repair

9. Replace cover plate and
screws.

7. Reattach black and white
wires to motor.

10. Replace RotoFlex HD
Pump and hose extension, page 12.

NOTE: Wires are not polarity sensitive.

ti4412a

8. Replace reattach green
ground wire and grounding
nut.

11. Replace front and back
covers and hopper. See
Removing and Replacing Hopper, Front and
Back Cover, page 9.

ti4471a

ti4470a

310645P

Compressor Rebuild Kit

Compressor Rebuild Kit
To replace piston, seals and sleeve.
For 120 V sprayer use Compressor Rebuild Kit 287330.

4. Remove 3/8 in. bolt
holding piston to
motor shaft.

For 230 V sprayer use Compressor Rebuild Kit 287331.
ti4707a

Disassembly
First read and follow instructions in the Before performing any service on sprayer section, page 9.
Then remove back cover, page 9.

5. Loosen 4 bolts on
top of motor housing.

1. Disconnect air line to
motor.

ti4708a

ti4460a

6. Remove bolts and
housing from
motor.

2. Remove 3 screws in
side of motor cover.
Remove cover.

ti4479a

ti4709a

ti4478a

7. Remove piston rod
from motor.
8. Using parts in kit
replace piston,
seals and sleeve.

3. Remove fan bolt from
center of fan and
remove fan from housing.

ti4710a

ti4706a

310645P

Compressor Rebuild Kit

Reassembly

5. Replace motor
fan and center fan
bolt.

1. Insert new piston rod
from kit in motor housing.

6. Tighten bolt.

ti4704a

ti4700a

7. Replace motor
cover and
screws.

2. Replace and
tighten piston bolt.
3. Replace top motor
hosing and 4 bolts.

ti4485a

ti4701a

8. Reconnect air
line from motor to
cooler.
9. Replace back cover.
See Removing and
Replacing Hopper,
Front and Back
Cover, page 9.

4. Tighten bolts.

ti4703a

310645P

Removing and Replacing Belt

Removing and Replacing Belt
Use Belt Replacement Kits 118845.

Replacing Belt

First read and follow instructions in the Before performing any service on sprayer section, page 9.

1. Using new belt from Kit,
position new belt
around pulleys making
sure the teeth in the
belt are properly
engaged with teeth on
pulleys.

Then remove hopper, front and back covers, page 9.
Remove hose extension and RotoFlex HD Pump
assembly from frame, page 11.

Removing Belt

ti4392a

2. Replace support rod.
Tighten 2 bolts (1 each
side) to secure supporting rod.

1. Loosen 4 bolts (2 each
side) to loosen tension on
belt.

ti4393a

ti4388b

2. Loosen 2 bolts (1 each
side) holding down support rod.

3. Insert crow bar under
assembly as shown
and raise motor
assembly until desired
belt tension is
achieved.
ti4469a
ti4388a

3. Using a screw driver for
leverage, lift up on
motor support rod on
one side of motor and
ease it out of the holding bracket far enough
to remove old belt. Discard old belt.

4. While holding motor
assembly in place with
crow bar. Spin pulley to
assure proper belt
engagement. Adjust
motor assembly position
as necessary.

At the same time, slide
in the new belt.

ti4472a

ti4391a

ti4459a

310645P

Removing and Replacing Belt

NOTE: A correctly tensioned belt will feel very tight. To
measure correct tension apply 4-5 lbs pressure at belt
midpoint with thumb. Belt should have approximately
1/8 in (3.175 mm) deflection.

5. Tighten all 4 bolts.

ti4394a

6. Turn belt one more
time with your hand
to make sure teeth
are properly engaged
and tension is correct.
ti4477a

NOTE: A loose belt will not last long. If in doubt, tighten
more.

7. Replace RotoFlex
HD Pump and hose
extension, page 12.
8. Replace back and
front covers and hopper. See Removing and Replacing Hopper, Front
and Back Cover, page 9.
ti4473a

310645P

Roller Replacement

Roller Replacement
Use Roller Replacement Kit 287321.

Reassembly

Kit includes 2 rollers, 4 nylon washer, and 2 retaining
rings.

1. Replace roller assembly.

Disassembly

ti4398a

First read and follow instructions in the Before performing any service on sprayer section, page 9.
Then remove hopper, front and back covers, page 9.
Remove hose extension and RotoFlex HD Pump
assembly from frame, page 11.
1. Remove snap ring.

ti4396a

2. Reinstall snap ring.
3. Replace RotoFlex HD
Pump and hose extension,
page 12.
4. Replace back and front
covers and hopper. See
Removing and Replacing
Hopper, Front and Back
Cover, page 9.

ti4399a

2. Remove roller assembly
from rotor pins (a).
3. Clean rotor pins (a) and
check for damage. If
pins are worn or damaged, replace rotor
assembly, (Rotor
Assembly Replacement, page 22).

310645P

ti4397a

Rotor Assembly Replacement

Rotor Assembly Replacement
Use Pump Assembly Replacement Kit 287255.

Reassembly

Disassembly

1. Put new rotor assembly from kit on shaft.

First read and follow instructions in the Before performing any service on sprayer section, page 9.

2. Insert a wrench in the
pulley to prevent it from
moving.

Then remove hopper, front and back covers, page 9.
Remove hose extension and RotoFlex HD Pump
assembly from frame, page 11.
ti4714a

1. To prevent rotor assembly
from moving, insert a long
screw driver or pry bar in
the pulley.

3. Replace bolt. Torque to
40 ft. lb.

ti4714a

4. Replace RotoFlex HD
Pump and hose extension,
page 12.
ti4712a

5. Replace back and front
covers and hopper. See
Removing and Replacing
Hopper, Front and Back
Cover, page 9.

2. Remove large bolt and
washer in center of rotor
assembly.
3. Pull rotor assembly off
shaft.
ti4711a

310645P

Air Cylinder and Solenoid Valve

Air Cylinder and Solenoid Valve
Use Cylinder Replacement Kit, 287323.
For 120 V sprayer use Solenoid Replacement Kit
15D560.

4. Gently push cylinder
forward, relieving
tension on pin. Pull
out pin.

For 230V sprayer use Solenoid Replacement Kit
287351.
ti4409a

Disassembly
First read and follow instructions in the Before performing any service on sprayer section, page 9.
Then remove hopper, front and back covers, page 9.
Remove hose extension and RotoFlex HD Pump
assembly from frame, page 11.
1. Remove hose from quick
release fitting by using your
fingers on one hand to push
in on ring while at the same
time, using the other hand,
gently pull the hose out of
the fitting.

NOTE: If replacing solenoid valve only, it can be
done at this time.
a. Use adjustable wrench to rotate entire
solenoid valve assembly counterclockwise from
cylinder.
b. Replace solenoid valve and continue with step 4
of reassembly.
5. Lift cylinder up and pull it
back.
6. Remove dampening
grommet.
ti4518a

7. Using a 15/16 in.
wrench, loosen nut,
located inside sprayer
frame at the end of the
air cylinder.

ti4406a

2. Remove electric wire terminal connections.

ti4415a

ti4416a

8. Using a 15/16 in. wrench,
loosen nut on the other
side of the sprayer
frame.

3. Remove cotter key
located on the end of the cylinder pin, by using a pliers to
straighten the ends and pull
it out of the hole.

9. Pull cylinder out of
sprayer frame.
If replacing cylinder only,
remove solenoid valve
(see a and b above) and
reinstall on new cylinder.
ti4453a

ti4414a

310645P

Air Cylinder and Solenoid Valve

Reassembly

6. Replace cotter pin
through hole in pin,
bending ends to
secure.

1. Insert crowned backing
nut on shaft of cylinder.
2. Using new cylinder from
kit, position cylinder in
sprayer frame, inserting
end of cylinder through
pump bracket mounting
hole.

ti4456a
ti4421a

7. Reattach electric wire
terminals. Terminals are
not polarity sensitive
and can be connected to
either post.

3. Install locking nut flush to end of shaft.
4. Install dampening grommet.

ti4417a

8. Gently push hose in
quick release fitting.

5. Align hole in end of air cylinder and replace pin.

9. Replace RotoFlex HD
Pump and hose
extension, page 12.
ti4407a

ti4410a

10. Replace front cover
and hopper. See
Removing and Replacing Hopper, Front and Back
Cover, page 9.

ti4455a

310645P

Relief Valve and Flow Sensor Manifold

Relief Valve and Flow Sensor Manifold
For 120 V sprayer use Relief Valve Replacement Kit
15D559.

5. Remove Relief Valve
from sprayer frame.

For 230 V sprayer use Relief Valve Replacement Kit
287350.

Disassembly
ti4419a

First read and follow instructions in the Before performing any service on sprayer section, page 9.
Then remove hopper, front and back covers, page 9.
1. Remove air line to
regulator.

Reassembly
1. Position new relief valve from Kit in back of sprayer.
2. Replace and tighten screws.

2. Remove air line from
cooler to manifold.
ti4423a

3. Disconnect wires to
Relief Valve. Pay attention to their location to insure
they are reattached correctly.
4. Remove 2 nuts securing Relief Valve to
sprayer.

3. Reattach wires to Relief Valve.
4. Reattach air line from cooler to manifold.
5. Reattach air line to regulator.Replace RotoFlex HD
Pump and hose extension, page 12.
6. Replace front cover and hopper. See Removing and
Replacing Hopper, Front and Back Cover, page 9.

ti4418a

310645P

Air Flow Sensor Replacement

Air Flow Sensor Replacement
For 120 V sprayer use Sensor Replacement Kit 287326.
For 230 V sprayer use Sensor Replacement Kit 287345.

2. Rotate counter-clockwise
to remove sensor from
manifold.

NOTE: If you are just replacing the sensor, you do not
have to remove the motor first.
ti4480a

Reassembly
1. Rotate new sensor
from kit clockwise, all
the way into opening in
Relief Valve housing.
Lightly tighten nut.
ti4486a

1. Disconnect all
wire connections.

2. Reconnect all wires.
3. Replace RotoFlex HD
Pump and hose
extension, page 12.
ti4481a

ti4482a

WHITE WIRE

4. Replace back and
front covers and hopper. See Removing
and Replacing Hopper, Front and Back
Cover, page 9.

ti4487a

ti4488a

WHITE WIRE

310645P

Troubleshooting

Problem
Sprayer won’t run or stops intermittently

Pump won’t pump material or low
output

Cause

Solution

Power switch not on

Turn switch on.

No power at wall outlet

Check outlet by plugging in another
appliance. If appliance does not
work, try another outlet.

Wrong size generator

Use a 7500 watt or larger generator.
Refer to Generator Requirements,
page 8.

Temperature too cold

Allow unit to warm up.

Too many items on same circuit

Unplug other items from circuit.

Internal thermal switch tripped

Self-resetting. Allow unit to cool down
15 minutes and restart. Usually
occurs when wrong size extension
cord is used.

Extension cord too long or wrong
gauge

Use a 12 gage extension cord or
remove extension cord. Refer to
Grounding and Electric Requirements, page 7.

Breaker tripped

Reset breaker.

Air lock

Open air valve on gun.

Mix too thick

Add water to thin material. Use Material Thickness Gauge.

Loose fittings

Check and retighten all fittings.

Plugged gun

Relieve Pressure, page 7. Remove
gun from hose. Clean gun.

RotoFlex HD Pump worn out

Replace hose.

Pump cold or material frozen in pump Move pump to warm room and allow
it to warm up or run hot water through
sprayer.

310645P

Sensor is bad

Replace, page 26

Check air system for leaks

Remove shroud and examine for air
leaks

Loose wire

Remove shroud and examine wiring

No air pressure

Rebuild compressor

Troubleshooting

Problem
Soft start won’t work/pump, always
loaded

Cause
Sensor is bad

Change sensor, page 26

Air leak due to bad seal keeps valve
open

Replace seal

Normal soft start system delay

Release trigger for 10-15 seconds.
Retry.

Switch is not operating properly

Replace switch

Damaged solenoid valve on cylinder

Check gun supply, hose and sprayer
for leaks

AIr leak
Material runs out of bottom of sprayer RotoFlex HD Pump worn out
No air from compressor

Speed of application too slow

Speed of application too slow (cont.)

Solution

Replace hose.

Loose fittings

Check and retighten all fittings.

Gun air valve closed

Open gun air valve.

Gun needle plugged

Clean needle and retry.

Lines not connected

Check all quick disconnect connections to gun and hoses.

Damaged hose

Replace hose.

Worn compressor

Service compressor. Contact a qualified Graco Service Center.

Material too thick

Thin material.

Nozzle too small

Change nozzles to a larger size. See
Operation Manual, Recommended
Nozzle Selection Chart, page 20.

Flow control set too low

Increase flow control setting

Plugged or dirty gun

Relieve Pressure, page 7. Clean
gun.

Kinked hose

Unkink hose.

Gun fluid flow adjustment set too low Increase flow adjustment with flow
adjustment nut.
Intermittent flow/sputtering or air in
material

Hopper connection not tight

Check gasket. TIghten connection.

Debris in system

Clean

Air quick disconnect does not stay
connected.

Dirty or corroded fitting

Clean thoroughly. Soak in oil. Apply a
few drops of light oil.

Gun will not shut off

Worn nozzle or needle.

Relieve Pressure, page 7. Replace
worn parts.

Debris in needle passage

Relieve Pressure, page 7. Clean.

Fluid leaking at Flow Adjustment Nut Damaged seal.

Relieve Pressure, page 7. Replace
seal.

Needle adjustment won’t adjust

Dirty threads

Clean threads

Nozzle not on gun

Put nozzle on gun

Flow nut set to maximum adjustment Turn flow nut adjustment the other
way

310645P

Air Diagram

Air Cylinder

Air Compressor

Air Cooler
Gun

Regulator

Guage

One Way Valve

One Way Valve
Air Flow Control

ti4369a

Wiring Diagram
Air Compressor

Air Cylinder

51
32
Prime
Switch

8
Power
Switch

150/151
Air Flow
Control

50
Green
White
Black
ti4370d

310645P

Parts

Parts
49A

102

49C

49B
22
1E

1B
40

1A
53

42
52

62
52

36
45

88
38A
38B
37

101

13
62
88
63
4

55
56

310645P

Parts List

Parts List
Ref.
1

1A
1B
1D
1E
4
9
13
16
19
21
22
31
32
33
34
36
37
38

38A
38B
39

Part

Description

287315 KIT, compressor replacement
(includes 1A and 1B-1E),
120V sprayers
287330 KIT, compressor rebuild,
120V sprayers
287344 KIT, compressor replacement
(includes 1A, and 1B-1D),
230V sprayers
287331 KIT, compressor rebuild,
230V sprayers
119872 SCREW, shoulder
118886 GROMMET, isolator
119381 COVER, terminal
121479 CAPACITOR, start
118845 BELT
117728 FITTING, compression, union
15D156 PULLEY, rotor
118888 HOSE, air (includes 1/4 in. tubing
and one-way valve)
15D862 NUT, hand
118876 TUBE, air, aluminum
117637 NUT, compression
112395 SCREW, cap
15D633 WIRE, jumper
103473 STRAP, tie, wire
15B815 COOLER
101242 RING, retaining, ext.
287255 ROTOR, pump, assbly
(includes 38, 38A, 38B)
287321 KIT, roller replacement
(includes 38A, 38B and two rollers)
113983 RING, retaining, ext
117726 WASHER, nylon
15D628 CONDUCTOR, ground

310645P

Qty
.
1

3
3
1
1
1
2
1
1
1
1
1
4
1
2
1
2
1
2

2
4
1

Ref.
40
41

Part

Description

103785 RIVET
287327 KIT, repair, shaft, bracket, pump
assbly.
42
287256 BRACKET, compressor
43
118869 TUBE
45
15D610 SHAFT, motor, mount
49
287346 SHIELD, rear, assbly
(includes 19, 49A, 49B, 49C)
49A
15D561 COVER, tool tray
49B▲ 15D939 LABEL, warning, English, French,
Spanish
287336 KIT, label, warning, all languages
except those included in 15D939
49C▲ 15D940 LABEL, identification
51
15D634 WIRE, jumper
52
116937 BEARING, flanged, bronze
53
117633 SCREW, slot hex wash hd
54
116666 TUBE, air
55
287304 HOSE SET, twin line, 1 in. x 25-ft
56
15C090 GAUGE, thickness, fluid
57
183401 KEY, parallel
58
116720 COUPLER, air, quick disconnect
62
108851 WASHER, plain
63
106276 SCREW, cap, hex head
67
248515 BALL, sponge, 30 mm (5 pk)
73
112785 SCREW, flanged, hex head
74
115498 SCREW, mach, slot, hex, wash hd
82
118887 HOSE, air (includes 1/4 in. tubing
and one-way valve)
88
118866 WASHER, flat
101
248091 GUN, non-bleeder
102
122104 VALVE PLATE, compressor

Qty
.
2
1
1
1
1
1
1

1
2
8
1
1
1
2
1
2
2
2
2
1
1
1
1
1

▲ Replacement Danger and Warning labels, tags and
cards are available at no cost.

Parts

Parts
18
91

154

A
30

12
90
81

6
3

29
93

26
10

70
71

ti4372C

8
60

59
83
58
72
14

5B
5A

5
15

55
23

93
19
28
153
151

152a

152b

152c

152d

152e

150a

150b

150c

310645P

Parts List

Parts List
Ref.

Part

3
5

118844
287323

5A
5B
6
7
8▲
10
12
14

15D576
118871
117720
115244
186620
117693
119064
15D559
287350

15
16

15D560
287351
118888

17
18

15C968
287347

19
20

15D862
287326
287345
287348
108471
15D589
15D588
287314
189286
118885

23
24
25
26
27
28▲
29
30
32
35
49B▲

287254
15D633
116478
15D939
287336

310645P

Description
REGULATOR, air, 1/8 in. NPT
KIT, cylinder, replacement,
(includes 5A, 5B, 89)
SPACER, crowned
NUT, lock, 1/2-20
GAUGE, pressure
NUT, regulator
LABEL, ground, symbol
SWITCH, power
SWITCH, power, prime
VALVE, assembly, 120V (includes
sensor) sprayer
VALVE, assembly, 230V (includes
sensor) sprayer
VALVE, cylinder, 120V sprayer
VALVE, cylinder, 230V sprayer
HOSE, air (includes 1/4 in. tubing
and one-way valve)
TUBE, air
HOPPER, texture (includes
bracket)
NUT, hand
KIT, sensor only, 120V
KIT, sensor only, 230V
SHIELD, front (includes 28)
KNOB, pronged
BRACKET, hose, outer
BRACKET, hose, inner
KIT, RotoFlex HD Pump
LABEL, warning
HOSE, coupled (includes grommet)
FRAME, texture, blue
WIRE, jumper
WHEEL, pneumatic
LABEL, warning, English, French,
Spanish
KIT, label, warning, all languages
except those included in 15D939

Qty
.
1
1
1
1
1
1
1
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2

Ref.

Part

49C▲
51
54
55
58
59
60
66
70
71
72
74
77
81▲
82

15D940
15D634
116666
287304
116720
104641
116658
116171
116411
116477
101242
115498
102040
198492
118887

83▲
89
90▲
91▲
92▲
93
150
150a
150b

15D089
801012
15D951
15D953
15D952
118872
15D630
15E056

150c
151

15E061
15D902

152
152a
152b,c,d
152e
153
154

242001
287121
242005
195551
15F966

Description
LABEL, identification
WIRE, jumper
TUBE, air
HOSE SET, twin line, 1 in. x 25-ft
COUPLER, air, quick disconnect
FITTING, bulkhead
FITTING, tube, male, 1/4 NPT
BUSHING, strain relief
SPRING, compression
WASHER, flat, nylon
CAP, end
SCREW, mach, slot, hex, wash hd
NUT, lock, hex
LABEL, warning
HOSE, air (includes 1/4 in. tubing
and one-way valve)
LABEL, warning, hot surface
GROMMET
LABEL, identification
LABEL, identification
LABEL, identification
GASKET
CORD, power
Americas/Canada, 120V, 60 Hz
Europe/Asia, 230V, 50 Hz
(hardwired, rubber cord)
United Kingdom, 110V, 60, Hz
CORD, power, Europe/Australia/China, 230V, 50 Hz (requires
cordset adapter, 152, following)
ADAPTER, cordset, (for 15D902),
Europe
Italy, Denmark, Switzerland
Australia/China
RETAINER, (for 15D902)
BAFFLE, hopper

Qty
.
1
1
1
1
1
1
1
2
2
4
1
2
2
1
1
1
1
1
1
4
1
1
1
1

1
1
1
1
1

Technical Data

Technical Data
Maximum working fluid pressure
Maximum working air pressure
Material pressure operating range

100 psi (6.9 bar)
45 psi (3.1 bar)
0-100 psi (0 to 6.9 bar)

Compressor
Type
Air delivery

Oilless
6.5 CFM @ 40 psi (184.1 lpm @ 2.8 bar)

Motor
120V, 60 Hz 15A
230V, 50 Hz 10A
Hopper capacity
Maximum delivery with texture material

15 US gallons (57 liters)
2.0 gpm (7.57 lpm)

Dimensions
Length

27 in. (685.8 mm) with handles

Width

26 in. (660.4 mm)

Height

40 in. (1016 mm)

Weight
With hoses and gun

147 lb (66.68 kg)

Without hoses and gun

131 lb (59.47 kg)

Wetted parts

PVC, Buna-N, anodized aluminum, powder coat
aluminum, brass, polyethylene, SST, UHMW

Sound data
Sound pressure level*
Sound power level#

85.8 db(A)
100.1 db(A)

Generator (minimum size requirement)

7500W (7.5 kW)

Maximum external working air pressure (must use
External Air Hookup Kit 287328 ONLY)

120 psi (8.3 bar)

*Measured while spraying at 1 m.
#Measured per ISO-3744

310645P

Notes

310645P

Graco Standard Warranty
Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in
material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty
published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by
Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.
This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or
maintenance of structures, accessories, equipment or materials not supplied by Graco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will
be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.
THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.
Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy
(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.
GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT
MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to
the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these
warranties.
In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the
negligence of Graco, or otherwise.
FOR GRACO CANADA CUSTOMERS
The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite
de ou en rapport, directement ou indirectement, avec les procédures concernées.

Graco Information
For the latest information about Graco products, visit www.graco.com.
TO PLACE AN ORDER, contact your Graco distributor or call 1-800-690-2894 to identify the nearest distributor.

All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
For patent information, see www.graco.com/patents.
Original instructions. This manual contains English. MM 310645

Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 2004, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
www.graco.com
Revised March 2014

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XMP Toolkit                     : 3.1-701
Copyright                       : 2004, Rev P, 3/2014
Marked                          : True
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Producer                        : Acrobat Distiller 7.0.5 (Windows)
Web Statement                   : 310645N - RTX 1500 Electric Texture Sprayer (English)
Keywords                        : 310645, 310645P, 310645EN, 310645EN-P,  RTX 1500, Electric, Texture, Sprayer, 248201, 248315, 248370, 248536
Modify Date                     : 2014:04:01 11:52:33-05:00
Creator Tool                    : FrameMaker 9.0
Create Date                     : 2004:10:01 10:23:19Z
Metadata Date                   : 2014:04:01 11:52:33-05:00
Format                          : application/pdf
Title                           : 310645P - RTX 1500 Electric Texture Sprayer, Repair-Parts (English)
Creator                         : Cindy Schmitz
Description                     : RTX 1500 Electric Texture Sprayer (English)
Subject                         : 310645, 310645P, 310645EN, 310645EN-P, RTX 1500, Electric, Texture, Sprayer, 248201, 248315, 248370, 248536
Document ID                     : uuid:798ea679-0361-4771-98a1-a86b78cecc35
Instance ID                     : uuid:3efa5378-63f0-4c82-a3ae-c0327f0eae75
Page Count                      : 36
Author                          : Cindy Schmitz

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Graco 310645P Rtx 1500 Users Manual Electric Texture Sprayer, Repair Parts (English)

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