Graco 231-311 Instructions-Parts List Manual
  1. Manuals
  2. Brands
  3. Graco Manuals
  4. Paint Sprayer
  5. 231-311
  6. Instructions-parts list manual
Graco 231-311 Instructions-Parts List Manual

Graco 231-311 Instructions-Parts List Manual

490st airless paint sprayer
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
INSTRUCTIONS-PARTS LIST
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
INSTRUCTIONS
ELECTRIC, 100 VAC/50 or 60 HZ
490 st Airless Paint Sprayer
19.5 MPa, 195 bar (2750 psi) Maximum Working Pressure
Model 231–311, Series C
Basic sprayer
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
http://www.graco.com
COPYRIGHT 1994, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
308–343
Supersedes Rev. A
First choice when
quality counts.
Rev. B
and PCN B

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 231-311 and is the answer not in the manual?

Questions and answers

Related Manuals for Graco 231-311

Summary of Contents for Graco 231-311

  • Page 1 490 st Airless Paint Sprayer 19.5 MPa, 195 bar (2750 psi) Maximum Working Pressure Model 231–311, Series C Basic sprayer GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 http://www.graco.com COPYRIGHT 1994, GRACO INC. Graco Inc. is registered to I.S. EN ISO 9001...
  • Page 2 ......Graco Warranty .......
  • Page 3 Read all instruction manuals, tags, and labels before operating the equipment. Use the equipment only for its intended purpose. If you are not sure, call your Graco distributor. Do not alter or modify this equipment. Use only genuine Graco parts.
  • Page 4 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. Fluid injected into the skin may look like just a cut, but it is a serious injury.
  • Page 5 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. If there is any static sparking or you feel an electric shock while using this equipment, stop spray- ing immediately.
  • Page 6 Setup General Information Pressure Relief Procedure NOTE: Reference numbers and letters in parentheses in the text refer to the callouts in the figures and the WARNING parts drawing. INJECTION HAZARD WARNING Fluid under high pressure can be in- jected through the skin and cause seri- FIRE AND EXPLOSION HAZARD ous injury.
  • Page 7 WARNING Fill the wet–cup (102). Pry off the wet–cup seal. Fill the cup 1/3 full with Graco Throat Seal Liquid (TSL), supplied. Install the seal. If you supply your own hoses and spray gun, be...

  • Page 8: Operation

    Setup 1/4 npsm(m): Do not install any shutoff device here Fill 1/3 full with TSL Fig. 2 03172 Operation Refer to the IMPORTANT note on page 7. How to use the pressure drain valve Use the pressure drain valve (45) to relieve fluid pres- How to use the gun safety latch sure from the pump and to help prime the pump.
  • Page 9 Operation How to use the pressure control The tip guard alerts you to the risk and helps prevent placing any part of the body close to the spray tip. The The pressure control controls the motor operation so tip guard also adjusts the vertical or horizontal spray the sprayer maintains constant fluid pressure at the pattern.
  • Page 10 Startup Refer to the IMPORTANT note on page 7. Don’t install the spray tip until the pump is primed! Use this procedure each time you start the sprayer to Put the suction hose (32) into the paint. help ensure the sprayer is ready to operate and that you start it safely.
  • Page 11 Startup Adjust the spray pattern. Tip guard; shown in vertical position Tip guard: shown in a. Increase the pressure just until spray from the horizontal position gun is completely atomized. To avoid exces- sive overspray and fogging, and to extend tip and sprayer life, always use the lowest pres- sure needed to get the desired results.

  • Page 12: Shutdown And Care

    Shutdown and Care Refer to the IMPORTANT note on page 7. Coil the hose when storing it, even for overnight, to help protect the hose from kinking, abrasion, cou- pling damage, etc. WARNING WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the See the WARNINGS on page 3 for information on Pressure Relief Procedure on page 6.
  • Page 13 Notes...

  • Page 14: When To Flush

    Flushing Refer to the IMPORTANT note on page 7. How to flush When to flush WARNING Before using a new sprayer, flush out the oil which To reduce the risk of serious injury whenever you was left in to protect pump parts. are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 6.

  • Page 15: Troubleshooting

    Flushing Lower the pressure setting. Turn on the sprayer. Remove the pump from the pail. Disengage the Maintaining metal–to–metal contact, trigger the gun safety latch. Trigger the gun to force solvent gun into the flushing pail. Slowly increase the pres- from the hose and run the sprayer a few seconds sure just until the pump operates.
  • Page 16 Troubleshooting Basic Problem Solving (continued) TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK, refer to this column Mechanical (continued) 2. Check pump connecting rod pin (17). It must be 2.
  • Page 17 Troubleshooting Basic Problem Solving (continued) TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK, refer to this column Electrical, continued 11. Check ON/OFF switch (52). Disconnect the 11.
  • Page 18 Troubleshooting Intermediate Problem Solving TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK, refer to this column 6. Check motor brushes. See What To Check, 6. See page 22. item 4, on page 16.
  • Page 19 Troubleshooting Intermediate Problem Solving TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK, refer to this column 1. Spray tip worn beyond sprayer pressure capa- 1. Replace spray tip. Spray Pattern Variations bility.

  • Page 20: General Repair Information

    General Repair Information Refer to the IMPORTANT note on page 7. Route wires carefully through the drive housing and motor. Avoid pinching the wires between the junction box and the motor. WARNING To reduce the risk of serious injury whenever you CAUTION are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 6.

  • Page 21: Motor Test

    Motor Test WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 6. For checking armature, motor winding and brush elec- trical continuity. Setup Remove the drive housing. See page 30. This is to ensure that any resistance you notice in the arma- ture test is due to the motor and not to worn gears in the drive housing.

  • Page 22: Motor Brush Replacement

    Motor Brush Replacement NOTE: Replace the brushes when they have worn to Push in the spring clip (G) and release its hooks less than 10 mm. Refer to Fig. 16. Note that the from the brush holder (B). Pull out the spring clip. brushes wear differently on each side of the motor, so See Fig.
  • Page 23 Motor Brush Replacement Test the brushes. WARNING a. Remove the pump connecting rod pin. Do not touch the brushes, leads, springs, or brush holders while the sprayer is plugged in to reduce b. With the sprayer OFF, turn the pressure con- the risk of electric shock and serious injury.

  • Page 24: Displacement Pump

    Displacement Pump Clean and inspect the parts for wear or damage. WARNING Replace parts as needed. Use a new o–ring (119*). Reassemble the pump, or for additional To reduce the risk of serious injury whenever you pump repair, go to page 25. are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 6.

  • Page 25: Disassembling The Pump

    Displacement Pump Use a plastic mallet to tap the piston rod (107) down, and then pull the rod out through the bottom of the cylinder. Remove the throat packings (104*,105*) and glands (103*,106*). Loosen the jam nut (117). Remove the cylinder (115) and the o-ring (116*).

  • Page 26: Reassembling The Pump

    Displacement Pump Reassembling the pump CAREFULLY tighten the nut (110) against the pis- ton rod to 25 N.m. See Fig. 22. NOTE: Alternate plastic and leather packings. See Fig. 20. The lips of the throat V-packings face down, Use two wrenches to maintain the alignment men- against pressure.
  • Page 27 Displacement Pump Coat the piston rod and packings with oil. Carefully Tighten the cylinder jam nut (117) to 98 N.m. See slide the assembly INTO THE TOP OF THE CYL- Fig. 23. INDER (115). See Fig. 23. Install the pump. See page 24. Put the manifold in a vise.
  • Page 28 Motor Turn the displacement pump rod (107) so the pin WARNING hole aligns with the bottom drive housing screw (19). See the DETAIL below. Remove the three To reduce the risk of serious injury whenever you drive housing screws and lockwashers (19,6). are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 6.

  • Page 29: Motor Start Board

    Motor Start Board Install the new motor start board. Reconnect all WARNING wires. Mount the junction box. See Fig. 26. To reduce the risk of serious injury whenever you NOTE: Route wires through the gasket (50) before are instructed to relieve pressure, always follow the making connections.
  • Page 30 Drive Housing, Connecting Rod, Crankshaft Tap the lower rear of the drive housing (11) with a WARNING plastic mallet to loosen the motor. Pull the drive housing straight off the motor. To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Remove and inspect the crankshaft (12) and the Pressure Relief Procedure on page 6.
  • Page 31 Drive Housing, Connecting Rod, Crankshaft Torque to 9 N.m DETAIL REF A 01068 34 (x 3) Fig. 27 03181...

  • Page 32: Pressure Control

    Pressure Control Install the junction box. Be sure no leads are WARNING pinched against the motor or by the motor start board. To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 6. NOTE: The pressure control (64) cannot be repaired or adjusted.

  • Page 33: Pressure Transducer

    Pressure Transducer Install the displacement pump. See page 24. WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 6. Remove the displacement pump. See page 24. Use a pull–twist motion to remove the transducer (29) from the pump manifold (101).

  • Page 34: Drain Valve

    Drain Valve Coat the o–ring (42d) with grease. Press the stem WARNING into the valve body. Install the spring, washers and spring retainer into the valve body. To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Place the seat (42b) in the valve body so the Pressure Relief Procedure on page 6.

  • Page 35: Displacement Pump Parts

    Displacement Pump Parts Model 235–699, Series A Includes items 101 to 126 Part No. Description Qty. 103* 187–611 MANIFOLD, pump 176–758 NUT, packing 176–757* GLAND, female. throat 109* *105 176–997* V–PACKING, plastic, throat 176–755* V–PACKING, leather, throat 104* 176–754* GLAND, male. throat 235–709 ROD, displacement 218–197...

  • Page 36: Complete Sprayer Parts

    Complete Sprayer Parts LABEL REF 32 LABEL REF 33 SEE DETAIL ON PAGE 37 35,14 LABELS REF 24 LABEL 04786...
  • Page 37 Complete Sprayer Parts Model 231–311, Series C 110–037 SCREW, mach, pnhd, 10–24 x 5/8” 187–963 GASKET, junction box Includes items 3 to 85 as listed below 236–524 FILTER, power inlet 107–262 TERMINAL, 1/4” F, 18 AWG Ref. 107–504 TERMINAL, 3/16” F, 18 AWG Part No.
  • Page 38 Technical Data Dimensions Weight (dry w/o packaging) ....16.6 kg Power Requirements ... 100 VAC, 50/60 Hz, Height .
  • Page 39 Notes...

  • Page 40: Graco Phone Number

    Graco’s written recommendations. This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or sub- stitution of non–Graco component parts.

Table of Contents