Graco 225841 Operation manual

Instructions – Parts List
GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441
Copyright 1973, Graco Inc. is registered to I.S. EN ISO 9001
306472G
President 10:1 Ratio
Powerflo System
5 Gallon (19 Liter) or 10 Gallon (38 Liter) Portable
Cart–Mounted System
1750 psi (121 bar) Maximum Working Pressure
175 psi (12.1 bar) Maximum Air Input Pressure
Model 225841 Spray System
With EvenflorControl and Spray Gun.
Read warnings and instructions.
See page 2 for table of contents.
Related Manuals
Spray Gun 306494. . . . . . . . . . . . . . . . . . . . . . . . .
EvenflorAutomatic Pressure Control 306479. .
10:1 President Pump 306726. . . . . . . . . . . . . . . .
ti5105a
Parts

2 306472
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Information 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
WARNING
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
DThis equipment is for professional use only.
DRead all instruction manuals, tags, and labels before operating the equipment.
DUse the equipment only for its intended purpose. If you are not sure, call your Graco distributor.
DDo not alter or modify this equipment.
DCheck equipment daily. Repair or replace worn or damaged parts immediately.
DDo not exceed the maximum working pressure stated on the equipment or in the Technical Data
for your equipment. Do not exceed the maximum working pressure of the lowest rated component
in your system.
DUse fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.
DHandle hoses carefully. Do not pull on hoses to move equipment.
DRoute hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 66_C (150_F) or below –40_C (–40_F).
DWear hearing protection when operating this equipment.
DDo not move cart during operation or when pressurized to avoid tipping.
DDo not move or lift pressurized equipment.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.

3306472
WARNING
INJECTION HAZARD
Spray from the gun, leaks or ruptured components can inject fluid into your body and cause extremely
serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also
cause serious injury.
DFluid injected into the skin is a serious injury. The injury may look like just a cut, but it is a serious
injury. Get immediate medical attention.
DDo not point the gun at anyone or at any part of the body.
DDo not put your hand or fingers over the spray tip.
DDo not stop or deflect leaks with your hand, body, glove or rag.
DDo not “blow back” fluid; this is not an air spray system.
DAlways have the tip guard and the trigger guard on the gun when spraying.
DCheck the gun diffuser operation weekly. Refer to the gun manual.
DBe sure the gun trigger safety operates before spraying.
DLock the gun trigger safety when you stop spraying.
DFollow the Pressure Relief Procedure on page 8 if the spray tip clogs and before cleaning,
checking or servicing the equipment.
DTighten all fluid connections before operating the equipment.
DCheck the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.
Permanently coupled hoses cannot be repaired; replace the entire hose.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers.
DKeep clear of all moving parts when starting or operating the pump.
DBefore checking or servicing the equipment, follow the Pressure Relief Procedure on page 8 to
prevent the equipment from starting unexpectedly.

4 306472
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and re-
sult in a fire or explosion and serious injury.
DGround the equipment and the object being sprayed. Refer to Grounding on page 5.
DIf there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing immediately. Do not use the equipment until you identify and correct the problem.
DProvide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being sprayed.
DKeep the spray area free of debris, including solvent, rags, and gasoline.
DBefore operating this equipment, electrically disconnect all equipment in the spray area.
DBefore operating this equipment, extinguish all open flames or pilot lights in the spray area.
DDo not smoke in the spray area.
DDo not turn on or off any light switch in the spray area while spraying or while operating if fumes
are present.
DDo not operate a gasoline engine in the spray area.
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
inhaled, or swallowed.
DKnow the specific hazards of the fluid you are using.
DStore hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
DAlways wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.

5306472
Installation
General Information
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and the
parts drawing.
NOTE: Always use Genuine Graco Parts and Acces-
sories, available from your Graco distributor.
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE OR EXPLOSION HAZ-
ARD on page 4.
1. Pump: use a ground wire and clamp as shown in
Fig. 1. Loosen the grounding lug locknut (W) and
washer (X). Insert one end of a 12 ga (1.5 mm@)
minimum ground wire (Y) into the slot in lug (Z)
and tighten the locknut securely. Connect the other
end of the wire to a true earth ground. Order part
number 222011 Grounding Clamp and Wire.
2. Air and fluid hoses: use only electrically conductive
hoses.
3. Air compressor: follow manufacturer’s recommen-
dations.
4. Spray gun or dispensing valve: ground through
connection to a properly grounded fluid hose and
pump.
5. Object being sprayed: follow your local code.
6. Solvent pails used when flushing: follow your local
code. Use only metal pails, which are conductive,
placed on a grounded surface. Do not place the
pail on a nonconductive surface, such as paper or
cardboard, which interrupts the grounding continu-
ity.
7. To maintain grounding continuity when flushing or
relieving pressure, hold a metal part of the spray
gun firmly to the side of a grounded metal pail,
then trigger the gun.
0720
Fig. 1
Y
W
ZX

6 306472
Installation
Typical Installation
Slide the truck handle (206) through the elevator (304)
slide tubes and into the truck base sockets. Tighten
the setscrews (205) it the sockets as shown in Fig. 4.
Mount the Evenflo Control (1) to the pump, using the
screws supplied with it to attach the mounting plate to
the pump base. Remove the screw and lockwasher
from the bottom of the control. Position the control
over the small hole of the mounting plate and reinstall
the lockwasher and screw.
Connect the air and fluid hoses to the Evenflo Control
and the gun as shown in Fig. 2 and Fig. 4. Tape the air
and fluid hoses every 18 in. (457 mm) for easier han-
dling.
For automatic air motor lubrication, install an air line
lubricator between the pump air inlet and hose (E).
Otherwise, just connect the 18 in. (457 mm) hose (E)
from the Evenflo Control to the swivel air inlet of the
pump. For manual air motor lubrication, see MAINTE-
NANCE, page 10.
On the main air supply line, install an air line filter (B)
to remove harmful dirt and contaminants from your
compressed air supply. Also install a bleed-type master
air valve (A).
WARNING
A bleed-type master air valve (A) is required in your
system to reduce the risk of serious bodily injury,
including fluid injection, splashing in the eyes, and
injury from moving parts, if you are adjusting or
repairing the pump. Order Part No. 107142
This valve relieves air trapped between the valve
and the pump after the air supply is shut off.
Trapped air may cause the pump to cycle unex-
pectedly. Locate the valve within easy access of
the pump.
Connect the air hose (12*†) from the 1/2 npt(f) Evenflo
swivel air inlet to the main air supply line. Then con-
nect the hose’s ground wire (C) to a true earth ground.
Remove the cover from a 5 or 10 gallon supply pail.
Secure the pail to the truck base using the long
clamps (305) for 5 gallon (19 liter) pails and the short
clamps (208) for 10 gallon (38 liter) pails as shown in
Fig. 2. Secure the thumbnuts (207).
Unhook the elevator and lower the pump into the pail.
Ground the pump as explained on page 5.

7306472
Installation
Key
Bleed-type Master Air Valve
Air Filter
Air Hose Ground Wire
18” Hose
Evenflo Control
3/4” Union
3/8” Union
Swivel Union
Nipple
1” ID Fluid Hose
3/4” ID Fluid Hose
3/4 x 1” Union
Air Supply Hose
Gun Air Hose
Pump
Hand Spray Gun
Screw
Handle
Nut
Clamp
Screw
Lock washer
Frame
Clamp
A
B
C
E
1
5
6
7
8
9
Fig. 2
10
11
12
13
14
15
205
206
207
208
302
303
304
305
AB C
12
15
5
6
10
13
11
E
14
8
7
9
1
304
205
302,303
ti5106a
206
5 GAL. PAIL
10 GAL. PAIL
207
305
208
Bottom bead of drum
Points of clamp
above drum
bead

8 306472
Operation
Pressure Relief Procedure
With the Evenflo control, its bypass valve, and the
pump Relax-A-Valve properly set, fluid pressure is
relieved from the pump and hose each time you re-
lease the gun trigger. Always engage the gun trigger
safety when you stop spraying. To relieve air pressure,
close the Evenflo regulators and open the bleed-type
master air valve.
WARNING
INJECTION HAZARD
If you suspect that the Evenflo system is
not properly set, or that pressure is not
fully relieved, the system pressure must
be manually relieved to prevent the system from
starting or spraying accidentally. Fluid under high
pressure can be injected through the skin and
cause serious injury. To reduce the risk of an injury
from injection, splashing fluid, or moving parts, fol-
low the Pressure Relief Procedure whenever you:
Dare instructed to relieve the pressure,
Dstop spraying,
Dcheck or service any of the system equipment,
Dor install or clean the spray tips.
1. Close the air regulators.
2. Open the bleed-type master air valve.
3. Hold a metal part of the gun firmly to the side of a
grounded metal pail, and trigger the gun to relieve
pressure.
4. Lock the gun trigger safety.
5. Carefully loosen a fluid hose fitting and relieve
pressure gradually.
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
tip guard retaining nut or hose end coupling and relieve
pressure gradually, then loosen completely. Now clear
the tip or hose.
Relax-A-Valve Automatic Position
To set the pump Relax-A-Valve (G) in the automatic
position, loosen the locknut (H), turn the T-handle (J)
clockwise as far as possible, and then back-off the
handle four turns and tighten the nut. See Fig. 3.
NOTE: Every time you resume spraying, ensure that
the Relax-A-Valve is in the automatic position.
05960
Fig. 3
G
J
Drain back tube
H

9306472
Operation
Fig. 4
E
12
L
1
13
F
9
KGJ
Mixing by Circulation (Fig. 4)
1. Close the Evenflo bypass valve (K) by turning the
valve handle clockwise.
2. Turn both air regulator handles counterclockwise
to the free position.
3. Disconnect the gun air atomizing hose (13*) from
the left air regulator.
4. Open the Relax-A-Valve handle (J) fully counter-
clockwise.
5. Open the bleed-type master air valve (A).
6. Turn the left regulator handle clockwise until air
bleeds slightly through the open union (F).
7. Turn the right regulator handle clockwise to start
the pump. Increase the air pressure until the pump
circulates fluid through the Relax-A-Valve return
(drain back) tube at the desired rate.
8. After mixing, turn both regulator handles counter-
clockwise to the free position, connect the air
atomization hose (13*) to the left regulator, and set
the pump Relax-A-Valve in the automatic position.
Pump Operation (Fig. 4)
NOTE: Fluid can be mixed by circulating it before
spraying. See Mixing by Circulation.
1. Engage the gun trigger safety. Remove the gun air
cap; this prevents fluid from being forced back into
the gun’s air passages.
2. Turn the Evenflo bypass valve (K) fully in to close
it.
3. Set both regulators in the free position by turning
the handles fully counterclockwise.
4. Set the Relax-A-Valve (G) to automatic.
5. Open the Evenflo ball valve (L) (handle parallel to
body), and the bleed-type master air valve (A).
6. Set the atomizing air pressure to the gun at 40 psi
(2.8 bar) by turning the left regulator handle clock-
wise.
7. Direct the gun back into the pail. Release the
trigger safety and trigger the gun. Set the right air
regulator to 30 psi (2.1 bar). The pump will oper-
ate, filling the hose and gun.
8. Adjust the right regulator to the lowest pressure
necessary for the desired delivery rate; this varies
according to the fluid being pumped and other
system characteristics.
9. Release the gun trigger, engage the trigger safety,
and install the air cap.
10. Release the trigger safety and trigger the gun.
Adjust the left regulator until the fluid is properly
atomized. To minimize overspray, use the lowest
pressure necessary for good atomization.
11. Adjust the Evenflo bypass valve (K).
a. Be sure the Relax-A-Valve (G) is set in the
automatic position.
b. Be sure regulated air pressure is being sup-
plied to the gun and pump.
c. Open the bypass valve (K) four full turns
counterclockwise from the closed position.
d. Trigger the gun, directing the spray into the
pail. If the pump does not operate, release the
trigger and close the bypass valve 1/4 turn
clockwise.
e. Trigger the gun again. Repeat step d until the
pump starts when the gun is triggered.

10 306472
Maintenance
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
1. Remove and clean the strainer in the Evenflo
body, add light oil to the screen cavity and re-
assemble every day.
2. If the pump was not flushed and has not been
operated for more than one day, disconnect the
spray gun fluid hose, turn on the pump, and pump
out a small quantity of fluid. This removes any fluid
that has set-up in the hose.
3. Whenever you are done spraying for the day,
relieve the pressure. Cover the pail to protect it
from contaminants and air, which may cause the
fluid to harden.
NOTE: Be sure you flush the system thoroughly before
any fluid has a chance to set-up or harden.
Air Motor Lubrication
If your system does not include an automatic lubrica-
tor, remove the hose (E) to the pump air inlet. Place 15
drops of light machine oil in the inlet. Reattach the
hose and turn on the air to blow the oil into the motor.
Repeat this process every day.
Flushing
WARNING
FIRE AND EXPLOSION HAZARD
Before flushing, read the section FIRE
OR EXPLOSION HAZARD on page 4.
Be sure the entire system and flushing
pails are properly grounded. Refer to
Grounding on page 5.
Flush with a fluid that is compatible with the fluid you
are pumping and with the wetted parts in your system.
Check with your fluid manufacturer or supplier for
recommended flushing fluids and flushing frequency.
Always flush the pump before fluid dries on the dis-
placement rod.
CAUTION
Never leave water or water-base fluid in the pump
overnight. If you are pumping water-base fluid, flush
with water first, then with a rust inhibitor such as
mineral spirits. Relieve the pressure, but leave the
rust inhibitor in the pump to protect the parts from
corrosion.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 8.
1. Relieve the pressure.
2. Remove the spray gun and clean it according to
the supplied instructions.
3. Raise the pump out of the supply pail and hook the
elevator on the truck handle.
4. Remove the supply pail. Wipe excess fluid off of
the pump. Place the pump in a grounded metal
flushing container, with enough compatible solvent
for flushing the entire system.
5. Open the bleed-type master air valve, the pump
Relax-A-Valve, and start the pump. Circulate the
solvent for at least 15 minutes.
6. Close the Relax-A-Valve. DIrect the fluid hose into
the fluid supply pail. Start the pump. When the
solvent appears at the hose end, quickly transfer
the hose to the flushing pail and allow the pump to
circulate solvent through the pump and hose until
clean.
7. Relieve the pressure.