Graco 220106, 03695A, 235525, 237000, 307741 User Manual
INSTRUCTIONS-PARTS LIST
307741
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
INSTRUCTIONS
255 mm (10 in.) DIAMETER
Quiet KingR Air Motor
0.6 MPa, 6.2 bar (90 psi) Maximum Working Pressure
Part No. 220106, Series A
Standard Quiet Air Motor
Part No. 235525, Series B
Quiet Air Motor
Part No. 237000, Series A
Reduced Icing Quiet Air Motor
Rev. R
First choice when
quality counts.t
Model 220106 Shown
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
ECOPYRIGHT 1985, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
03695A
Table of Contents
Symbols
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Number 28. . . . . . . . . . . . . . . . . . . . . . . . . .
WARNING
EQUIPMENT MISUSE HAZARD
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.
INSTRUCTIONS
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
D This equipment is for professional use only.
D Read all instruction manuals, tags, and labels before operating the equipment.
D Use the equipment only for its intended purpose. If you are uncertain about usage, call your Graco
distributor.
D Do not alter or modify this equipment. Use only genuine Graco parts and accessories.
D Check equipment daily. Repair or replace worn or damaged parts immediately.
D Do 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.
D Use 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.
D Do not use hoses to pull equipment.
D Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 82_C (180_F) or below –40_C (–40_F).
D Wear hearing protection when operating this equipment.
2 307741
D Do not lift pressurized equipment.
D Do not lift the equipment by the air motor lift ring if the total weight of the equipment exceeds 550 lb
(250 kg).
D Comply with all applicable local, state, and national fire, electrical, and safety regulations.
WARNING
INJECTION HAZARD
Spray from the gun/valve, hose 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.
D Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate medi-
cal attention.
D Do not point the gun/valve at anyone or at any part of the body.
D Do not put your hand or fingers over the spray tip/nozzle.
D Do not stop or deflect leaks with your hand, body, glove or rag.
D Do not “blow back” fluid; this is not an air spray system.
D Always have the tip guard and the trigger guard on the gun when spraying.
D Check the spray gun diffuser operation weekly. Refer to the gun manual.
D Be sure the gun/valve trigger safety operates before spraying/dispensing.
D Lock the gun/valve trigger safety when you stop spraying/dispensing.
D Follow the Pressure Relief Procedure on page 7 whenever you: are instructed to relieve pres-
sure; stop spraying/dispensing; clean, check, or service the equipment; and install or clean the
spray tip/nozzle.
D Tighten all fluid connections before operating the equipment.
D Check the hoses, tubes, and couplings daily. Replace worn, damaged, or loose parts immediately.
Permanently coupled hoses cannot be repaired; replace the entire hose.
D Use only Graco approved hoses. Do not remove any spring guard that is used to help protect the
hose from rupture caused by kinks or bends near the couplings.
MOVING PARTS HAZARD
Moving parts, such as the air motor piston, can pinch or amputate your fingers.
D Keep clear of all moving parts when starting or operating the pump.
D Before servicing the equipment, follow the Pressure Relief Procedure on page 7 to prevent the
equipment from starting unexpectedly.
3307741
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and
result in a fire or explosion and serious injury.
D Ground the equipment and the object being sprayed. Refer to Grounding on page 5.
D If there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing/dispensing immediately. Do not use the equipment until you identify and correct the problem.
D Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being sprayed/dispensed.
D Keep the spray/dispense area free of debris, including solvent, rags, and gasoline.
D Electrically disconnect all equipment in the spray/dispense area.
D Extinguish all open flames or pilot lights in the spray/dispense area.
D Do not smoke in the spray/dispense area.
D Do not turn on or off any light switch in the spray/dispense area while operating or if fumes are
present.
D Do not operate a gasoline engine in the spray/dispense 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.
D Know the specific hazards of the fluid you are using.
D Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
D Always wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.
4 307741
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 Accessories, 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 AND EXPLOSION
HAZARD 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 237569 Grounding Clamp and Wire.
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. Fluid supply container: Follow your local code.
7. 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 continuity.
8. To maintain grounding continuity when flushing or
relieving pressure, hold a metal part of the spray
gun/dispense valve firmly to the side of a grounded
metal pail, then trigger the gun/valve.
Z
X
W
Y
2. Air and fluid hoses: Use only electrically conductive hoses.
3. Air compressor: Follow manufacturer’s recommendations.
Fig. 1
5307741
Installation
Noise Reduction
Instruction Manual 307375 is supplied with this motor.
It provides information on noise reduction.
The following are additional recommendations for
Maximum Noise Reduction:
D The air line should be connected to the air motor
inlet with an electrically conductive flexible hose.
Also, use flexible fluid outlet and suction hoses.
Where possible, avoid using solid plumbing, which
carries noise vibrations.
D Mount the air motor on resilient rubber pads, rather
than sheet metal.
D Determine minimum air inlet pressure and pump
cycle rate to achieve desired spray/dispensing
results or minimum fluid pressure and flow. This will
result in less system wear and less overall noise.
Air Motor Icing
Moisture in the compressed air can collect in the air
motor and freeze, causing the motor to stall. This is
called icing. If icing occurs, shut off the air supply and
allow the ice to thaw.
To minimize icing, reduce the moisture in your compressed air supply by using an air dryer or a filter
which traps water.
Slope the main air line slightly downward so water will
collect at the end of the line, where it can be drained.
Additionally, plumb each drop line from the top of the
main air line. Install an automatic drain or a drain valve
at the bottom of each drop.
Model 237000 Reduced Icing Air Motor allows you to
divert a stream of air over the air valves. This flow of
warm air prevents water from collecting and freezing.
The amount of air is adjustable with a needle valve
(88, see the parts drawing on page 22).
For additional help in designing your system, contact
your Graco distributor.
6 307741
Troubleshooting
Pressure Relief Procedure
WARNING
INJECTION HAZARD
To reduce the risk of serious injury, including fluid injection, splashing in the
eyes or on the skin, or moving parts,
always follow the Pressure Relief Procedure
whenever you
D are instructed to relieve the pressure
D shut off the pump
D stop spraying/dispensing
D check or service any of the system equipment
D install or clean the spray tips/nozzles
1. Lock the gun/valve trigger safety.
2. Turn off the air to the motor.
3. Close the bleed-type master air valve (required in
your system).
4. Unlock the gun/valve trigger safety. Hold a metal
part of the gun/valve firmly to a grounded metal
pail. Trigger the gun/valve to relieve pressure.
Stalled Motor
To restart a stalled motor, close the bleed-type master
air valve to bleed off all trapped air pressure. Turn the
air back on. This will trip the air valve of the air motor,
causing the piston to go to the top or bottom of its
stroke.
WARNING
MOVING PARTS HAZARD
The piston in the air motor moves when
air is supplied to the motor. Moving parts
can pinch or amputate your fingers or
other body parts. Relieve the pressure before
servicing the motor.
If Motor Will Not Operate
Check the following areas for damage or wear and
replace parts as needed.
5. Lock the gun/valve trigger safety.
6. Open the fluid drain valve. Leave the fluid drain
valve open until you are ready to spray/dispense
again.
If you suspect that the spray tip/nozzle 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
to relieve pressure gradually, then loosen completely.
Now clear the tip/nozzle or hose obstruction.
Air valving mechanism: director valve (3), spring (4),
air valve housing (5), valve plate (2), valve plate seal
(1).
Trip rod: check for broken spring or bent rod (40). Do
not attempt to repair the trip rod.
Damaged toggle mechanism: guide (16), spring (17),
housing (18), pin (19).
7307741
Troubleshooting
Air Leaks
Air leaks are caused by worn or damaged gaskets or
seals. To locate the leaks, first shut off the air supply to
the pump and open the bleed-type master air valve to
relieve air pressure. Disconnect the main air supply
line from the air inlet. Remove the shield (27) as
explained on page 10, then reinstall the other parts
and connect the main air line to the inlet.
Open the bleed-type master air valve and adjust the air
pressure to .07–0.1 MPa, 0.7–1.0 bar (10–15 psi). Stall
the pump on both the up and down stroke as indicated
in the Check Chart below. Use the methods listed in
the Check Chart to find where air is leaking. See Fig.
2.
your fingers. Reinstall the air motor shield before
resuming normal operation of the pump.
Check for air leaks by feeling, listening, or squirting oil
around the suspected area. The oil will bubble if there
is a leak.
CHECK CHART
Stroke Position Letter Ref. Points Check Method Cause of Leakage
UP stroke only F By listening for air leak at
exhaust outlets
B By feel Blown air cylinder gasket
C Squirt oil around wiper (44) Worn throat packing (46).
G By feel Damaged cylinder gasket
DOWN stroke only D By feel. Damaged air manifold gas-
BOTH strokes E By feeling exhaust, or
hearing a high-pitched
sound
F By feel, or hearing a high-
pitched sound
D or G By feel Blown manifold gaskets
H Squirt oil around o-ring
(15)
K By feel Damaged o-ring (26).
WARNING
MOVING PARTS HAZARD
Keep you fingers away from all moving
parts while performing this test, to
reduce the risk of pinching or amputating
Worn trip rod packing (65).
(35).
(38).
ket (30).
Worn director valve (3).
Replace, or lap faces with
no. 500 grit sandpaper.
Worn piston o-ring (33).
(38 and 30).
Damaged housing o-ring
(15).
8 307741
K (26)
Troubleshooting
Pack cavity with light
1
waterproof grease.
2
Grease packing (46*).
Lips of packing (46*)
3
must face up.
29
H (15)
*65
B (*35)
D (30*)
E (3)
G (38*)
F (33*)
C (44*)
Fig. 2
*45, *46
1 2 3
Model 220106 Shown
03705A
9307741
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