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INSTRUCTIONS–PARTS LIST
30:1 PRESIDENT, CARBON STEEL, CART MOUNTED
Heated Air-Assisted Airless
Electrostatic Package
See the Data Sheet, 305–669, for application information
3000 psi (210 bar) Maximum System Working Pressure
100 psi (6.9 bar) Maximum Air Inlet Pressure
Model 237–426, Series A
This complete package includes a pump,
an electrostatic air-assisted airless–spray gun with size a 411 spray tip,
a portable cart, 25 ft. (7.6 m) air and fluid hoses,
air and fluid controls, and a fluid feed.
IMPORTANT
This manual provides the basic safety, installation and
operation information for the spray system. For your
safety, also read the component manuals supplied with
this system before operating it.
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
This manual contains important
warnings and information.
READ AND RETAIN FOR REFERENCE
COPYRIGHT 1994, GRACO INC.
308–465
Rev. B
Supersedes A
04133
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Summary of Contents for Graco 237-426
- Page 1 This manual provides the basic safety, installation and operation information for the spray system. For your safety, also read the component manuals supplied with this system before operating it. 04133 GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 COPYRIGHT 1994, GRACO INC.
- Page 2 ........Graco Phone Numbers .
- Page 3 Handle and route hoses and tubes carefully. Keep hoses and tubes away from moving parts and hot surfaces. Do not use the hoses to pull equipment. Do not expose Graco hoses to tempera- tures above 180 F (82 C) or below –40 F (–40 C).
- Page 4 This equipment is for professional use only. Read all instruction manuals, tags, and labels before operating the equipment. 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.
- Page 5 Setup Prepare the operator. 4. Have a grounded waste pail available to use when draining the fluid filter. All persons who operate the system should be trained in the safe, efficient operation of all system compo- nents as well as the proper handling of the chemical 5.
- Page 6 Setup III. Unpack the system. 3. Connect the whip hose (19) to the fluid inlet of the spray gun (55). These are 1/4–18 swivel fit- 1. In addition to the assembled unit, these compo- tings. nents are packed separately: suction assembly, hose set, gun.
- Page 7 5. Electrostatic spray gun: grounding is obtained through connection to a properly grounded air supply hose. Use only Graco electrically conduc- tive air supply hose (34) as supplied with this system. Loosen the grounding lug locknut (W) and Fig. 5 washer (X).
- Page 8 System Component Information How to use the air-assisted airless electrostatic spray gun. The air hose supplies air to the spray gun. Part of the air operates the turbine and the rest of the air assists in the atomization of the fluid being sprayed. The turbine generates power which is converted by the power cartridge to supply high voltage current to the gun’s ionizing electrode.
- Page 9 System Component Information III. How to use the 3–way valve. How to adjust the air and back pressure regulators. See Fig. 9. See Fig. 10. This system has two air regulators. As you look at the Heated systems require that the fluid circulate system, the regulator (31a) on the left of the pump constantly when the heater is turned on.
- Page 10 Operation Pressure relief procedure Flush the pump before the first use. Flush with a solvent compatible to your fluid. Consult WARNING the fluid manufacturer’s literature for recommenda- tions. See Flushing on page 14. To reduce the risk of serious injury, including splashing fluid or solvent in the eyes or on the skin, always follow the procedure below when you stop spraying or shut off the pump, check or service any...
- Page 11 Operation NOTE: In the next steps, the pump will cycle quickly 13. Turn the heater dial to 3. When adjusting the until air is purged. heater, always allow the fluid to circulate and stabi- lize (about 10 minutes) before checking the tem- perature.
- Page 12 Operation How to set the fluid and air pressure. 7. If there are stripes or spots in the spray pattern, raise the pump air pressure until you raise the fluid 1. Install the spray tip and air cap on the gun. outlet pressure by about 100 psi (7 bar) and try again.
- Page 13 Operation WARNING ES indicator light ES On–Off lever I is ON and 0 is OFF Never trigger the gun without a grounded work Air control valve piece in front of the gun. If you body is the best Electrode ground or if you are holding the gun too far from Air cap the work piece, the material will be attracted to and cover you instead of the work piece.
- Page 14 Operation When to flush. WARNING Before the first time use Turn the E/S valve OFF before flushing to reduce the risk of static sparking, fire or explosion and When changing colors serious injury. Before fluid can dry or settle out in a dormant sys- tem (observe the recommended fluid pot life on cat- 1.
- Page 15 Operation 8. Put the suction tube into a grounded metal pail 14. For a first–time flush: trigger the gun and circulate with about 1 gal. (4 liters) of a compatible solvent. the solvent for 30 seconds. For flushing after spraying fluid: trigger the gun 9.
- Page 16 Parts Model 237–426, Series A Includes items 1 to 72 Part No. Description Part No. Description 223–586 PRESIDENT PUMP 222–297 45 ADAPTER UNION, See 308–106 for parts 1/2 npt(m) x 1/2 npsm(f) swivel 220–522 VISCON FLUID HEATER, 120V 158–491 NIPPLE, 1/2 npt, 1 5/8” (41 mm) long 1 See manual 307–805 for parts 166–999 ELBOW, reducing street,...
- Page 17 Parts Model 237–426, Series A Includes items 1 to 72 60 53 55,56 Ref 12 04132...
- Page 18 Notes...
- Page 19 Notes...
- Page 20 WARRANTY Graco warrants all equipment manufactured by it and bearing its name to be free from defects in fluid and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. As purchaser’s sole remedy for breach of this warranty, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment proven defective.