Graco AA2000 User Manual
INSTRUCTIONS-PARTS LIST
307-947
<3
ORACO
■mmucnoNt
This manual contains important
warnings and information.
READ AND RETAIN FOR REFERENCE
Model AA2000
High Efficiency Low Pressure"” System
Air-Assisted Airiess Spray Gun
Part Number 222-615, Series C
950 psi (66 bar) Maximum Working Fluid Pressure
100 psi (7 bar) Maximum Working Air Pressure*
10 psi (0.7 bar) Maximum Operating Air Pressure**
* The Maximum Working Air Pressure indicates the maxi
mum air pressure the gun was designed to operate safely
under.
Rev. E
Supersedes D
** The Maximum Operating Air Pressure indicates the maxi
mum air pressure the air cap supplied with this gun was
designed to operate at or below to comply with California
Wood Rule 1136. To guarantee compliance to rule 1136,
the gun must be used with Air Regulator Part No. 110-776.
This regulator limits the operating pressure to 10 psi (0.7
bar), using an air supply pressure of 100 psi (7 bar).
U.S. Patent Nos. 3,843,052; 4,386,739
United Kingdom Patent No. 2 111 406 B
Patented 1984 Canada
Brevete 1984
French Patent No. 82-21202
Foreign Patents Pending
GRACO INC.
P.O. BOX 1441 MINNEAPOLIS, MN
©COPYRIGHT 1988, GRACO INC.
55440-1441
Table of Contents
Safety Warnings..................................................... 3
Installation
Ventilate the Spray Booth
Required Accessories ................................................. 6
Connect the Air Line .................................................... 7
Connect the Fluid Line ................................................ 7
Grounding
.....................................................................
............................................
Operation
How Air-Assisted Airless Spray Gun Operates ... 7
Select A Spray Tip........................................................ 8
Install a Spray Tip
Adjust the Spray Pattern and Apply the Fluid
Flush the Gun Daily
Clean the Spray Gun and System Daily
........................................................
______
...................................................
...................
10
10
Troubleshooting.................................................... 11
Service
Air Valve Service
6
7
Fluid Packing Replacement
Parts
......................................................................
Optional Parts ...................................................... 15
........................................................
......................................
12
12
14
Accessories .......................................................... 16
Spray Tip Selection Charts
Technical Data
8
8
Dimensions
.....................................................
...........................................................
................................
18
19
19
Warranty ....................................................... Back Cover
2 307-947
WARNINGS
High Pressure Spray Can Cause Serious Injury. For Professional Use Only.
Observe All Warnings. Read and understand all instruction manuals before operating equipment.
FLUID INJECTION HAZARD
General Safety
This equipment generates very high fluid pressure.
Spray from the gun, leaks or ruptured components
can inject fluid through your skin and into your body
and cause extremely serious injury, including the
need for amputation. Also, fluid injected or splashed
into the eyes or on the skin can cause serious dam
age.
Never point the spray gun at anyone or at any part of
the body. Never put hand or fingers over the spray tip.
Never try to stop or deflect leaks with your hand or body.
Never try to “blow back" paint; this is not an air spray
gun.
Always follow the Pressure Relief Procedure, at
right, before cleaning or removing the spray tip or
servicing any system equipment.
Check operation of all equipment safety devices
before each use.
Diffuser
The gun diffuser breaks up spray and reduces the
risk of fluid injection when the tip is not installed.
Check diffuser operation regularly. Follow the Pres
sure Relief Procedure, below, then remove the spray
tip. Aim the gun into a grounded metal pail, holding
the gun firmly to the pail. Using the lowest possible
pressure, trigger the gun. If the fluid emitted is not
diffused into an irregular stream, replace the diffuser
immediately.
Spray Tip Safety
Use extreme caution when cleaning or changing
spray tips. If the spray tip clogs while spraying,
engage the gun safety latch immediately. Always fol
low the Pressure Relief Procedure, below, and then
remove the spray tip to clean it.
Never wipe off build-up around the spray tip or air cap
until pressure is fully relieved and the gun safety latch
is engaged.
Pressure Relief Procedure
To reduce the risk of serious injury, including fluid
injection, splashing in the eyes or on skin, or injury
from moving parts, always follow this procedure
whenever pump is shut off, when checking or servic
ing any part of system, when installing or changing
spray tips and whenever you stop spraying.
Medical Alert - Airless Spray Wounds
If any fluid appears to penetrate your skin, get emer
gency medical care at once. Do not treat as a sim
ple cut. Tell the doctor exactly what fluid was injected.
NOTE TO PHYSICIAN: Injection into the skin is a
traumatic injury. It is important to treat the injury
surgically as soon as possible. Do not delay treat
ment to research toxicity. Toxicity is a concern with
some exotic coatings injected directly into the blood
stream. Consultation with a plastic surgeon or
reconstructive hand surgeon may be advisable.
Spray Gun Safety Devices
Be sure all gun safety devices are operating properly
before each use. Do not remove or modify any part of
the gun; this can cause a malfunction and result in
serious injury.
Safety Latch
Whenever you stop spraying, even for a moment,
always set the gun safety latch in the closed or
“on safe” position, making the gun inoperative. See
Fig. 3, page 8. Failure to set the safety latch can result
in accidental triggering of the gun.
1. Engage the spray gun safety latch.
2. Shut off the power to the pump.
3. Close the bleed-type master air valve (required in
system).
4. Disengage the gun safety latch.
5. Hold a metal part of gun firmly to the side of a
grounded metal container and trigger the gun to
relieve fluid pressure.
6. Engage the gun safety latch again.
7. Open pump drain valve (required in system)to
help relieve fluid pressure in the displacement
pump. In addition, open the drain valve con
nected to the fluid pressure gauge (in a system
with fluid regulation) to help relieve fluid pressure
in the hose and gun. Triggering the gun to relieve
pressure may not be sufficient. Have a container
ready to catch the drainage.
8. Leave drain valve(s) open until you are ready to
spray again.
If you suspect that the spray tip or hose is completely
clogged or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
hose end coupling and relieve pressure gradually,
then loosen completely. Now clear the tip or hose
obstruction.
307-947 3
FIRE OR EXPLOSION HAZARD
static electricity is created by the flow of fluid through
the pump and hose. If every part of the equipment is
not properly grounded, sparking may occur, and the .
system may become hazardous. Sparks can ignite
fumes from solvents and the fluid being sprayed, dust
particles and other flammable substances, whether
you are pumping indoors or outdoors, and cause a
fire or explosion, serious injury, and property damage.
Sparks may also occur when plugging in or unplug
ging a power supply cord. Do not plug in or unplug
any power supply cords in the spray area when there
is any chance of igniting fumes still in the air.
If you experience any static sparking or feel even a
slight shock while using this equipment, stop spray
ing immediately. Check for proper grounding of the
entire system. Do not use the system again until the
cause of the problem is identified and corrected.
Grounding
To reduce the risk of static sparking, ground the
pump and all other equipment used or located in the
spray area. Check your local electrical code for
detailed grounding instructions for your area and type
of equipment and be sure to ground all of the
following equipment:
3. Air compressors and hydraulic power supplies:
ground according to the manufacturer’s recom
mendations.
4. Spray gun: obtain grounding through connection
to a properly grounded fluid hose and pump.
5. Fluid supply container: according to local code.
6. Object being sprayed: according to local code.
7. All solvent pails used when flushing, according to
local code. Use only metal pails, which are con
ductive. Do not place the pail on a non-conduc
tive surface, such as paper or cardboard, which
interrupts the grounding continuity.
8. To maintain grounding continuity when flushing or
relieving pressure, always hold a metal part of the
gun firmly to the side of a grounded metal pail,
then trigger the gun.
Flushing Safety
To reduce the risk of fluid injection injury, static spark
ing, or splashing, follow the Pressure Relief Proce
dure on page 3, and remove the spray tip before
flushing. Hold a metal part of the gun firmly to the
side of a grounded metal pail and use the lowest pos
sible fluid pressure during flushing.
1. Pump-, use a ground wire and clamp as instructed
in your separate pump instruction manual.
2. Air, fluid, and hydraulic hoses connected to the
pump: use only grounded hoses with a maximum
of 500 feet (150 m) combined hose length to
ensure grounding continuity. Refer also to Hose
Grounding Continuity, below.
HOSE SAFETY
High pressure fluid in the hoses can be very danger
ous. If the hose develops a leak, split or rupture due
to any kind of wear, damage or misuse, the high pres
sure spray emitted from it can cause a fluid injection
injury or other serious injury or property damage.
All fluid spray hoses must have a spring guard on
both endsi The spring guards help protect the hose
from kinks or bends at or close to the coupling which
can result in hose rupture.
Tighten all fluid connections securely before each
use. High pressure fluid can dislodge a loose cou
pling or allow high pressure spray to be emitted from
the coupling.
Never use a damaged hose. Before each use, check
the entire hose for cuts, leaks, abrasion, bulging
cover, or damage or movement of the hose couplings.
If any of these conditions exist, replace the hose
immediately. Do not try to recouple high pressure
hose or mend it with tape or any other device. A
repaired hose cannot contain the high pressure fluid.
4 307-947
Ventilate the Spray Booth
To prevent hazardous concentrations of toxic and/or
flammable vapors, spray only in a properly ventilated
spray booth.
Never operate the spray gun unless the ventilating
fans are operating.
Handle and route hoses carefully. Do not pull on
hoses to move equipment. Do not use fluids or sol
vents which are not compatible with the inner tube
and cover of the hose. Do not expose Graco hose to
temperatures above 180° F (82° C) or below -40°
F(-4 0 ° C ).
Hose Grounding Continuity
Proper hose grounding continuity is essential to main
taining a grounded spray system. Check the electrical
resistance of your air and fluid hoses at least once a
week. If your hose does not have a tag on it which
specifies the maximum electrical resistance, contact
the hose supplier or manufacturer for the maximum
resistance limits. Use a resistance meter in the appro
priate range for your hose to check the resistance. If
the resistance exceeds the recommended limits,
replace it immediately. An ungrounded or poorly
grounded hose can make your system hazardous.
Also read FIRE OR EXPLOSION HAZARD.
EQUIPMENT MISUSE HAZARD
General Safety
Any misuse of the equipment or accessories, such as
overpressurizing, modifying parts, using incompatible
chemicals and fluids, or using worn or damaged
parts, can cause them to rupture and result in serious
injury, including fluid injection and splashing fluid in
the eyes or on the skin, or in fire, explosion or prop
erty damage.
Never alter or modify any part of this equipment;
doing so could cause it to malfunction.
Check the gun and all spray equipment regularly and
repair or replace worn or damaged parts immediately.
Read and follow the fluid and solvent manufacturer’s
literature regarding the use of protective eyewear,
gloves, clothing, respirator and other equipment.
Fluid Compatibility
Be sure all fluids and solvents used are chemically
compatible with the “Wetted Parts” shown in the
Technical Data on page 19. Always read the fluid
and solvent manufacturer’s literature before using
them in this gun.
System Pressure
The High Efficiency Low Pressure System 2500
AA2000 spray gun has a 950 psi (66 bar) Maximum
Fluid Working Pressure and 100 psi (7 bar) Maximum
Working Air Pressure (indicates the maximum air pres
sure the gun was designed to operate safely under).
Never exceed these pressures!
The Maximum Operating Air Pressure is 10 psi (0.7
bar). This indicates the maximum air pressure the air
cap supplied with this gun was designed to operate
at or below to comply with California Wood Rule 1136.
To guarantee compliance to rule 1136, the gun must
be used with Air Regulator Part No. 110-776. This
regulator limits the operating pressure to 10 psi (0.7
bar), using an air supply pressure of 100 psi (7 bar).
Be sure that ail spray equipment and accessories
added to the spray system are properly rated to with
stand the maximum working pressure of your system.
Do not exceed maximum working pressure of any
component or accessory used in the system.
IMPORTANT
United States Government safety standards have been adopted under the Occupational Safety and Health Act. These standards •
particularly the General Standards, Part 1910, and the Construction Standards, Part 1926 - should be consulted.
307-947 5
Installation
KEY
Gun Air Inlet
A
Gun Fluid Inlet
B
Bleed-Type Master
c
Air Vaive
Main Air Supply Line
D
Pump Air Regulator
E
Gun Air Regulator,
F
p/n 110-776, lOpsI
(0.7 bar)Maximum
Outlet Pressure
Pump Ground Wire
G
Air Line Filter
H
Fluid Drain Vaive
J
Gun Air Hose
K
Gun Fluid Hose
L
Fluid Regulator Kit
M
Fluid Filter
N
Air Pressure
P
Relief Vaive
Fig.1
The typical installation shown in Fig.1 is only a guide
for selecting and installing air-assisted airless spray
systems. It is not an actual system design. Contact
your Graco representative for assistance in designing
a system to meet your needs.
The Graco fluid pump Model 217-523 is designed for
use in air-assisted airless systems. It has a maximum
working pressure of 950 psi (66 bar). See instruction
manual 307-595 for information on this pump.
Ventilate the Spray Booth
-----------------------
To prevent hazardous concentrations of toxic and/
or flammable vapors, spray only in a properly ven
tilated spray booth.
Never operate the spray gun unless ventilation
fans are operating.
Check and follow all of the National, State and
Local codes regarding air exhaust velocity
requirements.
WARNING
----------------------------
Required Accessories
■WARNING
Two accessories, the bleed-type master air valve
(C), and the fluid drain valve (J) are required for
your system to reduce the risk of serious injury
from moving parts, splashing, or fluid injection
when shutting off the pump.
The bleed-type master air valve (located down
stream of the pump air regulator) relieves air
trapped between the valve and the pump, after
the pump is shut off. Trapped air can cause the
pump to cycle unexpectedly and result in serious
injury if you are adjusting or repairing the pump.
The fluid drain valve(s) helps relieve fluid pressure
in the displacement pump, hose and gun when
shutting off the pump. Triggering the gun to relieve
pressure may not be sufficient, especially if there
is a clog in the hose, gun, or tip.
6 307-947
Loading...