AIRLESSCO Pro-Light 500 17N201 Operating instructions

3A4133B
EN
Operation, Repair
500 Spray Guns (Airlessco)
For the application of architectural paints and coatings.
Model: 17N201
3600 psi (25 MPa, 248 bar) Maximum Fluid Working Pressure
Important Safety Instructions
Read all warnings and instructions in this manual. Refer to your sprayer instruction
manual for Pressure Relief, priming and spray instructions. Save these instructions.
Important Medical Information
Keep the wallet-sized medical alert card provided with this gun with the operator at all
times. The card contains important treatment information for the physician should a
skin injection injury occur. Additional cards are available at no charge.
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Warnings
23A4133B
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 or on
warning labels, 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.
SKIN INJECTION HAZARD
High-pressure spray is able to inject toxins into the body and cause serious bodily
injury. In the event that injection occurs, get immediate surgical treatment.
•Do not aim the gun at, or spray any person or animal.
•Keep hands and other body parts away from the discharge. For example, do not
try to stop leaks with any part of the body.
•Always use the nozzle tip guard. Do not spray without nozzle tip guard in place.
•Use Airlessco nozzle tips.
•Use caution when cleaning and changing nozzle tips. In the case where the
nozzle tip clogs while spraying, follow the Pressure Relief Procedure for turning
off the unit and relieving the pressure before removing the nozzle tip to clean.
•Equipment maintains pressure after power is shut off. Do not leave the
equipment energized or under pressure while unattended. Follow the Pressure
Relief Procedure when the equipment is unattended or not in use, and before
servicing, cleaning, or removing parts.
•Check hoses and parts for signs of damage. Replace any damaged hoses or
parts.
•This system is capable of producing 3600 psi. Use Airlessco replacement parts
or accessories that are rated a minimum of 3600 psi.
•Always engage the trigger lock when not spraying. Verify the trigger lock is
functioning properly.
•Verify that all connections are secure before operating the unit.
•Know how to stop the unit and bleed pressure quickly. Be thoroughly familiar
with the controls.

Warnings
3A4133B 3
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or
explode. Paint or solvent flowing through the equipment can cause static sparking.
To help prevent fire and explosion:
•Use equipment only in well ventilated area.
•Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric
lamps, and plastic drop cloths (potential static sparking).
•Ground all equipment in the work area. See Grounding instructions.
•Never spray or flush solvent at high pressure.
•Keep work area free of debris, including solvent, rags and gasoline.
•Do not plug or unplug power cords, or turn power or light switches on or off when
flammable fumes are present.
•Use only grounded hoses.
•Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail
liners unless they are anti-static or conductive.
•Stop operation immediately if static sparking occurs or you feel a shock.Do
not use equipment until you identify and correct the problem.
•Keep a working fire extinguisher in the work area.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
•Always wear appropriate gloves, eye protection, and a respirator or mask when
painting.
•Do not operate or spray near children. Keep children away from equipment at
all times.
•Do not overreach or stand on an unstable support. Keep effective footing and
balance at all times.
•Stay alert and watch what you are doing.
•Do not operate the unit when fatigued or under the influence of drugs or alcohol.
•Do not kink or over-bend the hose.
•Do not expose the hose to temperatures or to pressures in excess of those
specified by Airlessco.
•Do not use the hose as a strength member to pull or lift the equipment.
•Do not spray with a hose shorter than 25 feet.
•Do not alter or modify equipment. Alterations or modifications may void agency
approvals and create safety hazards.
• Make sure all equipment is rated and approved for the environment in which you
are using it.

Warnings
43A4133B
PRESSURIZED ALUMINUM PARTS HAZARD
Use of fluids that are incompatible with aluminum in pressurized equipment can
cause serious chemical reaction and equipment rupture. Failure to follow this
warning can result in death, serious injury, or property damage.
•Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated
hydrocarbon solvents or fluids containing such solvents.
•Do not use chlorine bleach.
•Many other fluids may contain chemicals that can react with aluminum. Contact
your material supplier for compatibility.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent
serious injury, including eye injury, hearing loss, inhalation of toxic fumes, and
burns. This protective equipment includes but is not limited to:
•Protective eyewear, and hearing protection.
•Respirators, protective clothing, and gloves as recommended by the fluid and
solvent manufacturer.
CALIFORNIA PROPOSITION 65
This product contains a chemical known to the State of California to cause cancer,
birth defects or other reproductive harm. Wash hands after handling.

Setup
3A4133B 5
Setup
Pressure Relief Procedure
Follow the Pressure Relief
Procedure whenever you see this
symbol.
1. Turn sprayer OFF.
2. Engage the trigger lock. Always engage
the trigger lock when sprayer is stopped
to prevent the gun from being triggered
accidentally.
3. Turn pressure control knob to lowest
setting.
4. Put drain tube into a waste pail and turn
Prime/Spray valve in PRIME position
(drain) to relieve pressure.
5. Hold the gun firmly to a pail. Point gun
into pail. Disengage the trigger lock and
trigger the gun to relieve pressure.
6. Engage the trigger lock.
7. If you suspect the spray tip or hose is
clogged or that pressure has not been
fully relieved:
a. VERY SLOWLY loosen the tip
guard retaining nut or the hose end
coupling to relieve pressure
gradually.
b. Loosen the nut or coupling
completely.
c. Clear airless hose or spray tip
obstruction. See Clear Tip Clog,
page 8.
Gun Trigger Lock
Two or Four Finger
Trigger Conversion
This gun easily converts from a 4–finger
trigger to a 2–finger trigger. Choose the
trigger that feels and works the best for you.
To change the trigger:
1. Lift trigger guard out of the guard
retainer.
2. Swing trigger guard out of the way.
3. Remove trigger stud from fluid housing
by removing lock nut.
4. Remove trigger.
5. Slide the other trigger into position on
fluid housing.
6. Align holes in trigger with hole in fluid
housing.
7. Insert trigger stud through trigger and
fluid housing.
8. Install and tighten lock nut.
This equipment stays pressurized until
pressure is manually relieved. To help
prevent serious injury from pressurized
fluid, such as skin injection or splashed
fluid, follow the Pressure Relief
Procedure whenever sprayer is stopped
and before sprayer is cleaned or checked,
and before equipment is serviced.
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To prevent injury when the gun is not in
use, always engage the gun’s trigger lock
if unit is being shut down or left
unattended.
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Setup
63A4133B
9. Attach two or four finger trigger.
a. Two-finger trigger:
•Unscrew gun handle from gun.
•Slide two-finger trigger rest onto
handle.
•Tighten set screw to hold two-finger
trigger rest in place as shown.
•Reattach handle to gun. Tighten
securely.
b. Four-finger trigger:
•Unscrew gun handle from gun.
•Loosen set screw that holds
two-finger trigger rest in place.
•Slide two-finger trigger rest off of the
handle.
•Reattach handle to gun. Tighten
securely.
10. Attach trigger guard to the guard
retainer.
TWO FINGER
FOUR FINGER
TIGHTEN
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LOOSEN

Setup
3A4133B 7
Connect Gun to Sprayer
Make sure sprayer is turned off and
unplugged from power source. Refer to your
sprayer instruction manual for priming and
spray instructions.
1. Attach supply hose to sprayer fluid
outlet.
2. Attach other end of supply hose to gun
swivel. Use two wrenches (one on the
swivel and one on the hose), to tighten
all connections securely.
3. Refer to sprayer instruction manual for
priming instructions.
Install Tip and Tip Guard on Gun
To prevent spray tip leaks make certain spray
tip and tip guard are installed properly.
1. Perform Pressure Relief Procedure,
page 5.
2. Engage trigger lock.
3. Verify spray tip and tip guard parts are
assembled in the order shown.
a. Use spray tip to align gasket and
seal in the tip guard.
b. Spray tip must be pushed all the
way into the tip guard. Turn spray tip
to push down.
c. Turn the arrow shaped handle on
the spray tip forward to the spray
position.
4. Screw spray tip and tip guard assembly
onto the gun and tighten.
0 0
To avoid serious injury from skin injection
do not put your hand in front of the spray tip
when installing or removing the spray tip
and tip guard.
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Operation
83A4133B
Operation
Spray
1. Disengage trigger lock.
2. Be sure the arrow shaped tip faces for-
ward (spray).
3. Hold gun perpendicular and approxi-
mately 12-inches (30 cm) from surface.
Move gun first, then pull gun trigger to
spray a test pattern.
4. Slowly increase pump pressure until
coverage is uniform and even (see
sprayer instruction manual for addi-
tional information).
Align Spray
1. Perform Pressure Relief Procedure,
page 5.
2. Loosen tip guard retaining nut.
3. Align tip guard horizontally to spray a
horizontal pattern.
4. Align tip guard vertically to spray a ver-
tical pattern.
5. Tighten tip guard retaining nut.
Clear Tip Clog
In the event that particles or debris clog the
spray tip, this sprayer is designed with a
reversible spray tip that quickly and easily
clears the particles without disassembling the
sprayer.
1. Engage trigger lock. Rotate spray tip to
unclog position. Disengage trigger lock.
Trigger gun at waste area to clear clog.
UNCLOG
NOTE: If spray tip is difficult to rotate when
turning to the unclog position, perform
Pressure Relief Procedure, page 5, then
turn Prime/Spray valve to spray position and
repeat step 1.
2. Engage trigger lock. Rotate spray tip
back to spray position. Disengage trig-
ger lock and continue spraying.
SPRAY
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HORIZONTAL VERTICAL
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Operation
3A4133B 9
Cleanup
Flush gun and clean paint off the outside after
each work shift. Store in a dry location. Refer
to your sprayer manual for flushing
instructions.
Maintenance
Clean/Replace Filter
1. Perform Pressure Relief Procedure,
page 5, and engage trigger lock.
2. Disconnect fluid hose from gun at
swivel.
3. Disconnect trigger guard from guard
retainer.
4. Unscrew handle from gun.
5. Remove filter through top of handle.
6. Clean filter. Use a soft brush to loosen
and remove excess debris.
7. Insert clean filter into handle.
8. Reattach handle to gun. Tighten
securely.
9. Reconnect trigger guard to guard
retainer.
NOTICE
To prevent damage to gun parts, do not
leave the gun or any parts, except the tip, in
water or cleaning solvents. Your gun is NOT
compatible with harsh cleaners, such as
cleaning solvents that contain methylene
chloride.
To avoid injury always read all warnings in
this manual and the sprayer manual,
before performing any maintenance on
the gun.

Parts
10 3A4133B
Parts
15
17
1a
7
6
5
38
1b
21
10
8
1c
3
32
39
33
2
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Ref. Part Description Qty.
1 288817 DIFFUSER/SEATKIT
(includes 1a, 1b, 1c)
1
1a SEAT, valve 1
1b NEEDLE 1
1c NUT, lock 1
2 855052 REV-GUARD, tip 1
3 255126 TRIGGER, 4 finger 1
255127 TRIGGER, 2 finger 1
4 195495 GUARD, trigger 1
5 17M532 HANDLE, gun 1
6 17P312 FILTER, mesh 50 1
17P313 FILTER, mesh 100 1
7 179733 SEAL, sleeve 1
8 195395 CAP, end 1
10 115484 PIN, actuator 2
15 ARV517 TIP, reversible, 517 1
17 858029 SEAL, w/ o-ring 1
21 17M269 HOUSING, fluid
(includes 7)
1
32 177538 STUD, trigger 1
33 105334 NUT, lock, hex 1
38 15K101 GUARD, 2 finger (with
2 finger trigger only)
1
39 100002 SCREW, set (with 2
finger trigger only)
40222385 CARD, medical alert
(not shown)
Replacement Warning labels, tags and
cards are available at no cost.
Ref. Part Description Qty.

Repair
3A4133B 11
Repair
Clean/Replace Filter
1. Perform Pressure Relief Procedure,
page 5. Engage trigger lock.
2. Disconnect hose.
3. Disconnect trigger guard from guard
retainer.
4. Unscrew handle from gun.
5. Remove filter through top of handle.
6. Clean filter using a soft brush.
7. Insert clean filter into handle.
8. Reattach handle to gun. Tighten securely.
9. Reconnect trigger guard to guard retainer.
Replace Needle
1. Perform Pressure Relief Procedure,
page 5.Engage trigger lock.
2. Disconnect hose. Remove tip and guard.
3. Disengage trigger lock.
4. Squeeze trigger while unscrewing
diffuser/seat.
5. Remove locknut and end cap.
6. Tap out needle using a plastic hammer.
7. Use a soft brush to clean internal
passages of gun.
8. Grease o-rings of new needle using a
non-silicon grease.
9. Guide new needle into front of gun.
10. Install end cap and locknut, loosely.
11. For needle housing, apply medium
strength (blue) thread sealant to threads.
12. Squeeze trigger while installing needle
housing. Torque to 26-32 ft-lb (35-43 N·m).
13. Perform Needle Adjustment .
Needle Adjustment
1. Perform Pressure Relief Procedure,
page 5.Engage trigger lock.
2. Remove tip and guard. Disconnect hose.
3. Engage trigger lock.
4. Hold gun with nozzle pointing up. Turn
locknut clockwise until you see and feel
trigger raise slightly.
5. Turn locknut 3/4 turn counterclockwise.
When properly adjusted, trigger will
move freely.
NOTE: When needle is properly adjusted,
trigger will move freely.
6. Connect hose. Install tip guard. Prime
sprayer.
7. Trigger gun into pail until fluid flows from
gun.
8. Release trigger. Fluid flow should stop
immediately.
9. Engage trigger lock. Try to trigger gun.
No fluid should flow.
10. If the gun fails either test, repeat steps 1-9.
To avoid injury always read all warnings in
this manual and the sprayer manual,
before performing any repairs on the gun.
15a
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15b 17
16
a
CW 3/4 CCW
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Technical Data
12 3A4133B
Technical Data
* Measured at 3.1 ft (1 m) while spraying water-based paint, specific gravity 1.36, through a 517
tip at 3000 psi (20.7 MPa, 207 bar) per ISO 3744.
500 Spray Guns
US Metric
Maximum fluid working pressure 3600 psi 25 MPa, 248 bar
Fluid orifice size 0.125 in. 3.18 mm
Weight 22 oz. 163 g
Inlet 1/4 npsm swivel
Maximum material temperature 120°F 49°C
Wetted parts Stainless steel, polyurethane, nylon,
aluminum, tungsten carbide,
solvent resistant elastomer, brass
Noise Level*
Sound power
Sound pressure
87 dBa
78 dBa

Notes
3A4133B 13
Notes

Notes
14 3A4133B
Notes

Airlessco Standard Warranty
3A4133B 15
Airlessco Standard Warranty
Airlessco warrants all equipment referenced in this document which is manufactured by Airlessco 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 Airlessco, Airlessco will, for a
period of twelve months from the date of sale, repair or replace any part of the equipment determined by
Airlessco to be defective. This warranty applies only when the equipment is installed, operated and maintained
in accordance with Airlessco’s written recommendations.
This warranty does not cover, and Airlessco 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-Airlessco component parts. Nor shall
Airlessco be liable for malfunction, damage or wear caused by the incompatibility of Airlessco equipment with
structures, accessories, equipment or materials not supplied by Airlessco, or the improper design, manufacture,
installation, operation or maintenance of structures, accessories, equipment or materials not supplied by
Airlessco.
This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized
Airlessco distributor for verification of the claimed defect. If the claimed defect is verified, Airlessco 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.
Airlessco’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.
AIRLESSCO 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
Airlessco. These items sold, but not manufactured by Airlessco (such as electric motors, switches, hose, etc.),
are subject to the warranty, if any, of their manufacturer. Airlessco will provide purchaser with reasonable
assistance in making any claim for breach of these warranties.
In no event will Airlessco be liable for indirect, incidental, special or consequential damages resulting from
Airlessco 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 Airlessco, or otherwise.
FOR AIRLESSCO 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.

TO PLACE AN ORDER OR FOR SERVICE, contact your Airlessco distributor,
or call 1–800–223-8213 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.
Airlessco reserves the right to make changes at any time without notice.
Original Instructions. This manual contains English. MM 3A4133
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 2016, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
Revision B, May 2017
Airlessco Information
For the latest information about AIRLESSCO products, visit www.airlessco.com.
For patent information, see www.graco.com/patents.