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Setup

III.

Unpack the system.

1.

In addition to the assembled components, the air
and fluid hoses, gun and instruction manuals are
packaged separately in the main shipping con-
tainer. These are the manuals you should receive:

308–106

30:1 ratio President pump

308–176

Air-assisted airless spray gun

307–273

Fluid filter

308–167

Air regulator

308–861

Ball valve

308–136

Cart

IV.

Connect the hoses and gun to the
system.     

See Fig. 1.

1.

Connect the blue fluid hose (6) between the fluid
filter and the fluid inlet of the spray gun (3). These
are 1/4–18 npsm(f) swivel fittings.

2.

Connect the red air hose (7) between the gun air
regulator (8b) and the air inlet of the spray gun (3).
These are 1/4–18 npsm(f) swivel fittings.

3.

Verify that all fittings throughout the system are
tightened securely.

V.

Ground the system.

WARNING

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. 

Ground all of this equipment.

Also read FIRE OR EXPLOSION HAZARD on
page 4.

1.

Pump: one end of the ground wire (30) is already
connected to the air motor grounding lug. Connect
the clamp end of the ground wire to a true earth
ground.

2.

Air and fluid hoses: use only grounded hoses with
a maximum of 500 ft. (150 m) combined hose
length to ensure grounding continuity.

3.

Air compressor: according to manufacturer’s 
recommendations.

4.

Spray gun: grounding is obtained through connec-
tion to properly grounded fluid hoses and pump.

5.

Fluid supply container: according to local code.

6.

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-conductive
surface, such as paper or cardboard, which inter-
rupts the grounding continuity.

Summary of Contents for 237-421

Page 1: ...kage includes pump AA200hs air assisted airless gun with 411 spray tip portable cart 25 ft 7 6 m air and fluid hoses air and fluid controls and fluid feed IMPORTANT This manual provides basic safety installation and operation information for the package For your safety also read the component manuals supplied with this package before operating it GRACO INC P O BOX 1441 MINNEAPOLIS MN 55440 1441 CO...

Page 2: ...rts 12 Technical Data 16 Warranty 16 Graco Phone Numbers 16 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 corresponding instructions ...

Page 3: ...have the tip guard and the trigger guard on the spray gun when spraying D Check the gun diffuser operation weekly Refer to the gun manual D Be sure the gun trigger safety operates before spraying the gun D Lock the gun trigger safety when you stop spraying D Follow the Pressure relief procedure on page 8 if the spray tip clogs and before cleaning checking or servicing the equipment D Tighten all f...

Page 4: ...t D Use the equipment only for its intended purpose If you are in doubt about this call Graco Techni cal Assistance at 1 800 543 0339 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 3000 psi 210 bar maximum working pressure at 100 psi 6 9 bar maxi mum incoming air pr...

Page 5: ...r valve 14 is supplied with the package When the bleed type master air valve is closed and the pump air regulator 8a is opened the valve relieves all air pressure to the system 4 Have a grounded metal waste pail available to use when draining the fluid filter 5 Ventilate the spray booth WARNING To prevent hazardous concentrations of toxic and or flammable vapors spray only in a properly venti late...

Page 6: ...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 Ground all of this equipment Also read FIRE OR EXPLOSION HAZARD on page 4 1 Pump one end of the ground wire 30 is already connected to the air motor grounding lug Connect the clamp end o...

Page 7: ...idth of the spray pattern 2 To unlock the gun trigger safety turn the safety so it is parallel with the trigger To lock the gun trigger safety turn the safety to a right angle with the trig ger See Fig 2 Fig 2 UNLOCKED gun trigger safety LOCKED gun trigger safety 0795A 1 2 1 2 E II How to change the spray pattern direction 1 Relieve the air and fluid pressure 2 Install a spray tip in the gun Rotat...

Page 8: ... tip retaining nut or hose end cou pling and relieve pressure gradually Clean the tip or hose obstruction II Flush the pump before the first use Flush with a solvent compatible to your fluid Consult the fluid manufacturer s literature for recommenda tions See Flushing on page 10 III Prime the system See Fig 5 1 Remove the air cap and spray tip from the gun 2 Close the filter drain valve 26 3 Put t...

Page 9: ...d outlet pressure by about 100 psi 6 9 bar and try again Continue to raise the fluid pressure in 100 psi 6 9 bar increments until the pattern is full and clean Do not exceed 100 psi 6 9 bar incoming air pressure or 3000 psi 210 bar fluid working pressure NOTE Always use the lowest fluid and air pres sure required for good atomization and spray pat tern for maximum fluid efficiency Air pressure ove...

Page 10: ...ded metal waste pail Trigger the gun Slowly increase the pump air regulator setting until the fluid flows freely Some air will spit from the gun until the fluid arrives 9 Keeping the gun triggered decrease the pump air regulator 8a pressure as much as possible without stalling the pump and pump out the solvent until air comes through the gun 10 Repeat the procedure with clean solvent if needed 11 ...

Page 11: ...11 308 460 Notes ...

Page 12: ...ADAPTER UNION 1 2 npt m x 1 2 npsm f swivel 1 13 158 491 NIPPLE 1 2 npt 1 625 41 mm long 1 14 107 142 BLEED TYPE AIR VALVE 1 2 npt f 1 15 112 941 FLUID PRESSURE GAUGE 1 16 166 999 ELBOW reducing street 1 2 npt m x 1 4 npt f 1 17 162 453 NIPPLE 1 4 npt x 1 4 npsm 1 18 236 075 SUCTION HOSE 3 4 npt mbe 3 4 ID x 3 5 19 mm ID x 1 1 m 1 19 112 191 SUCTION TUBE 3 4 npt f 1 20 112 192 FLUID INTAKE ELBOW 3...

Page 13: ...13 308 460 Parts 04095 1 2 3 4 6 7 5 34 8 9 9 8 10 15 14 16 18 19 17 20 22 26 27 27 33 29 12 13 30 33 23 25 28 11 10 21 Model 237 421 Series A Includes items 1 to 34 ...

Page 14: ...14 308 460 Notes ...

Page 15: ... Notes ...

Page 16: ...ctive to an authorized Graco distributor for verification of the claim If the claimed defect is verified Graco 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 fluid or workmanship repairs will be made at a reasonable charge which charges may inclu...

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