Graco RTX 1500 Use and care manual

310645L
Repair and Parts
RTX 1500 Electric Texture Sprayer
U.S. Patent No. D580,517S
Europe Patent No. 1511575
- 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
ENG

Models
2310645L
Models
*Auxiliary Air Hookup Kit
RELATED MANUALS
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.
Manual
Model Electric
Requirements
Country
Operatio n
287328*
Gun
Languages
248201 120V, 60 Hz, 15 A N. America 310624 310694 310616 English
248370 / 248315 230V. 50 Hz, 10 A Europe 310624 310616 French
248370 230V. 50 Hz, 10 A Europe 310624 Dutch
248370 230V. 50 Hz, 10 A Europe 310625 310616 Spanish
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
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
Model Country Manual Languages
ALL ALL 310645 English

Warnings
310645L 3
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 compo-
nent. 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.

Warnings
4310645L
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
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.

Component Identification
310645L 5
Component Identification
A
C
F
H
K
L
E
B
D
P
T
U
S
R
V
W
M
ti4500a

Component Identification
6310645L
Component Identification
ITEM COMPONENT
A Main Power Switch
B Nozzle Storage
C Hopper
D Hopper Connect/Disconnect
E Graco RotoFlex™ HD Pump
F Material Outlet
H Air Outlet
K Fluid Flow Regulator and Pressure Gauge
L Gun Nozzle (5 sizes)
M Gun (see manual 310616)*
PPrimeSwitch
RPowerCord
S Pump Access Screw
T Hose - 25-ft.
U Material Thickness Gauge
V Cleaning Ball
W Spare Hose Gaskets

Preparation
310645L 7
Preparation
Pressure Relief Procedure
1. Turn Main Power Switch
(A) OFF.
2. Turn fluid flow regulator
(K) all the way down to
reduce pressure.
3. Open gun air valve (aa).
4. Trigger gun, spray-
ing material back
into hopper (C).
Grounding and Electric
Requirements
The 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 appro-
priate grounding prong.
• The plug must be plugged
into an outlet that is properly
installed and grounded in
accordance with all local
codes and ordinances.
• 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.
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.
ti4303a
K
ti4000a
A
ti4294a
Ground
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ti4296a
ti4297a
Ground
ti4295a

Preparation
8310645L
Auxiliary Air Compressor
• Use Auxiliary Air Hookup Kit 287328 when addi-
tional atomization air is necessary.
Generators
7500 W (7.5 KW) minimum.
Tips for Using Generators
• Before running sprayer, make sure it is at room tem-
perature. This will reduce startup current.
• Run generator at full throttle.
Hose Lengths
• The system comes with a twin line hose set consist-
ing 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 sec-
tions can be added. Total final length of hose used
should not exceed 100 feet in length.
NOTICE
Attaching auxiliary air to sprayer without using the
Auxiliary Air Hookup Kit will damage sprayer.
NOTICE
Sprayer air hose fitting can get hot! Allow sprayer to
cool down 5 minutes before removing air hose.

Removing and Replacing Hopper, Front and Back Covers
310645L 9
Removing and Replacing Hopper, Front and Back
Covers
Before performing any service on sprayer
always:
• Read all warnings, page 3.
• Read operating instructions manual, page 2.
•Relieve Pressure, page 7.
• Turn main power switch (A) OFF.
• Unplug sprayer from outlet.
• Remove air and material hoses.
• Clean sprayer. See Operation Manual 310624 or
310625.
Hopper
Removing Hopper
1. To remove hop-
per loosen fit-
ting. Fittings are
hand-tightened
and should not
require tools to
loosen.
2. Lift hopper
straight up, off
frame.
Replacing Hopper
1. To replace hop-
per, position
drain over fitting
as far as it will
go, making sure
identification
label faces out.
2. Hand tighten fit-
ting.
Front Cover
Removing Cover
1. Remove hopper.
2. Unscrew
and remove
knob (S).
3. Place you
hand under
front, bot-
tom edge of
cover.
(3a) Lift
cover up,
(3b) then
pull bottom
toward you
and out to remove cover.
Replacing Cover
1. Place your
hand under
front, bottom
edge of
cover. (1a)
Position top
edge of
cover under
top metal lip
on sprayer
frame.
(1b) Then
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.
2. Replace knob (S). Hand tighten fitting.
3. Replace hopper.
ti4503a
ti4504a
ti4408a
S
3a
3b
ti4411a
S
1a
1b

Removing and Replacing Hopper, Front and Back Covers
10 310645L
Back Cover
To access the motor and all other components, it is nec-
essary to remove the hopper, front and back covers.
Removing Cover
1. Completely
remove 6
screws (2 on
top and each
side) from
cover.
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.
2. Replace and
tighten screws.
ti4430a
ti4431a
ti4432a
ti4433a

RotoFlex™ HD Pump
310645L 11
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 oper-
ating sprayer.
Disassembly
First read and follow instructions in the Before perform-
ing any service on sprayer section, page 9.
Then remove hopper and front cover, page 9.
1. Loosen and remove
hose extension.
2. Loosen and remove
knob.
3. Slide RotoFlex HD
hose off rollers.
4. Rotate pump assem-
bly sideways. Pull
entire assembly out of
front of sprayer frame.
5. Separate the inner and
outer hose brackets.
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.
8. Discard pump hose.
ti4377a
ti4378a
ti4374a
ti4519a
ti4376a
ti4379a

RotoFlex™ HD Pump
12 310645L
Reassembly
1. Bend and kink new
pump hose from kit in
the middle as shown,
making sure dots on
hose fittings face each
other.
2. Insert hose ends
through holes in inner
hose bracket, keeping
dots on fittings facing
each other and kinked
portion of hose hori-
zontal to the under-
side of bracket.
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).
4. Slide plates together,
inserting inner plate in
outer plate, matching
alignment holes.
5. Replace bracket
assembly in housing
making sure the
mounting screw hole,
located in the top
center of the inner
plate, faces up.
6. Slide pump hose
around rollers. Make
sure the rollers are
horizontally parallel
to each other.
7. Slide feet on the bot-
tom of hose bracket, into
the slot on the bottom of
sprayer.
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.
ti3127a
DOTS
ti4386a
alignment
holes
ti4383a
ti4520a
ti4429a
ti4381a

RotoFlex™ HD Pump
310645L 13
Hose Break-In Procedure
1. Make sure fluid flow regula-
tor (K) is turned all the way
down.
2. Pour approxi-
mately 1 gallon
hot water in
sprayer hopper to
lubricate the
pump.
3. Turn power switch (A) on.
4. Hold in prime switch
(P).
5. Turn fluid flow regula-
tor (K) up to full pressure.
6. Run sprayer dry for 1 to
1-1/2 minutes.
ti4303a
K
ti4301a
WATER
ti4653a
ti4364a
P
K
ti4655a

Compressor and Motor Repair
14 310645L
Compressor and Motor Repair
For 120 V sprayer use Compressor and Motor Replace-
ment Kit, 287315.
For 230 V sprayer use Compressor and Motor Replace-
ment Kit, 287344.
Kits include motor/compressor and mounting hardware.
Disassembly
First read and follow instructions in the Before perform-
ing 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 two screws and
access cover on the left
side of the motor.
2. Remove ground nut and
disconnect green ground
wire.
3. Disconnect black and
white wires to motor.
4. Loosen 4 bolts (2 each
side) to loosen tension
on belt.
5. Slide belt off motor
pully.
6. Disconnect air line from
compressor to cooler
and remove.
7. Remove 3 screws on
right side of cover and
remove cover.
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ti4458a
ti4405a
ti4388b
ti4459a
ti4460a
ti4478a
ti4479a

Compressor and Motor Repair
310645L 15
8. Loosen 2 shoulder
bolts about 2-3 turns.
Do not remove them.
9. Remove single shoul-
der bolt on other side
of motor completely.
10. Slide out motor
assembly.
11. Completely remove
old shoulder bolts and
rubber mounts.
12. Thoroughly clean inside housing to remove dust and
debris.
Reassembly
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.
2. Slide new motor into
sprayer frame, aligning
motor frame opening
under bolts. Tighten
bolts.
3. Replace shoulder
bolt on left side with
new bolt from your
kit. Tighten bolt.
4. Replace end cover.
Replace and tighten 3
screws.
5. Reattach air line to
cooler and compressor.
Tighten fitting.
6. Slide belt over pulleys
and set tension. See
Replacing Belt, page 19.
ti4463a
ti4425a
ti4462a
ti4464a
ti4465a
ti4468a
ti4424a
ti4484a
ti4485a
ti4516a

Compressor and Motor Repair
16 310645L
7. Reattach black and white
wires to motor.
NOTE: Wires are not polar-
ity sensitive.
8. Replace reattach green
ground wire and grounding
nut.
9. Replace cover plate and
screws.
10. Replace RotoFlex HD
Pump and hose exten-
sion, page 12.
11. Replace front and back
covers and hopper. See
Removing and Replac-
ing Hopper, Front and
Back Cover, page 9.
ti4412a
ti4470a
ti4471a

Compressor Rebuild Kit
310645L 17
Compressor Rebuild Kit
To replace piston, seals and sleeve.
For 120 V sprayer use Compressor Rebuild Kit 287330.
For 230 V sprayer use Compressor Rebuild Kit 287331.
Disassembly
First read and follow instructions in the Before perform-
ing any service on sprayer section, page 9.
Then remove back cover, page 9.
1. Disconnect air line to
motor.
2. Remove 3 screws in
side of motor cover.
Remove cover.
3. Remove fan bolt from
center of fan and
remove fan from hous-
ing.
4. Remove 3/8 in. bolt
holding piston to
motor shaft.
5. Loosen 4 bolts on
top of motor hous-
ing.
6. Remove bolts and
housing from
motor.
7. Remove piston rod
from motor.
8. Using parts in kit
replace piston,
seals and sleeve.
ti4460a
ti4478a
ti4479a
ti4706a
ti4707a
ti4708a
ti4709a
ti4710a

Compressor Rebuild Kit
18 310645L
Reassembly
1. Insert new piston rod
from kit in motor housing.
2. Replace and
tighten piston bolt.
3. Replace top motor
hosing and 4 bolts.
4. Tighten bolts.
5. Replace motor
fan and center fan
bolt.
6. Tighten bolt.
7. Replace motor
cover and
screws.
8. Reconnect air
line from motor to
cooler.
9. Replace back cover.
See Removing and
Replacing Hopper,
Front and Back
Cover, page 9.
ti4700a
ti4701a
ti4703a
ti4704a
ti4485a

Removing and Replacing Belt
310645L 19
Removing and Replacing Belt
Use Belt Replacement Kits 118845.
First read and follow instructions in the Before perform-
ing 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.
Removing Belt
1. Loosen 4 bolts (2 each
side) to loosen tension on
belt.
2. Loosen 2 bolts (1 each
side) holding down sup-
port rod.
3. Using a screw driver for
leverage, lift up on
motor support rod on
one side of motor and
ease it out of the hold-
ing bracket far enough
to remove old belt. Dis-
card old belt.
At the same time, slide
in the new belt.
Replacing Belt
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.
2. Replace support rod.
Tighten 2 bolts (1 each
side) to secure support-
ing rod.
3. Insert crow bar under
assembly as shown
and raise motor
assembly until desired
belt tension is
achieved.
4. While holding motor
assembly in place with
crow bar. Spin pulley to
assure proper belt
engagement. Adjust
motor assembly position
as necessary.
ti4388b
ti4388a
ti4459a
ti4391a
ti4392a
ti4393a
ti4469a
ti4472a

Removing and Replacing Belt
20 310645L
5. Tighten all 4 bolts.
6. Turn belt one more
time with your hand
to make sure teeth
are properly engaged
and tension is cor-
rect.
7. Replace RotoFlex
HD Pump and hose
extension, page 12.
8. Replace back and
front covers and hop-
per. See Removing and Replacing Hopper, Front
and Back Cover, page 9.
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) deflec-
tion.
A loose belt will not last long. If in doubt, tighten
more.
ti4477a
ti4394a
ti4473a