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INSTRUCTIONS-PARTS LIST
This manual contains important
warnings and information.
READ AND KEEP FOR REFERENCE.
INSTRUCTIONS
ELECTRIC, 110 VAC
390 st Airless Paint Sprayer
2750 psi (195 bar) Maximum Working Pressure
Model 231–298, Series A
Complete sprayer with 50 ft hose, contractor gun, RAC
IV DripLess
Tip Guard and SwitchTip
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1997, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
308–683
Rev. A
02821A
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Table of Contents
Related Manuals for Graco 231-298
Summary of Contents for Graco 231-298
- Page 1 Model 231–298, Series A Complete sprayer with 50 ft hose, contractor gun, RAC IV DripLess Tip Guard and SwitchTip 02821A GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 COPYRIGHT 1997, GRACO INC. Graco Inc. is registered to I.S. EN ISO 9001...
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Page 2: Table Of Contents
..... Graco Warranty and Disclaimers .... -
Page 3: Warnings
WARNING WARNING INJECTION HAZARD Spray from the gun, leaks or ruptured components can inject fluid into your body and cause ex- tremely 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 is a serious injury. - 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 not sure, call Graco Technical Assis- tance at 1–800–543–0339. Do not alter or modify this equipment.
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Page 5: Component Identification And Function
Component Identification and Function Model 231–298 Shown 02823A Fig. 1 Motor DC motor, 120 Vac, 15A, 1 phase Drive Assembly Transfers power from DC motor to the displacement pump Pressure Adjusting Knob Controls fluid outlet pressure ON/OFF Switch Power switch that controls 120 Vac power to sprayer Fluid Outlet Hose and spray gun is connected here Displacement Pump... -
Page 6: Setup
Setup 2. Fill the wet–cup (102). Pry off the wet-cup seal. WARNING Fill the cup 1/3 full with Graco Throat Seal Liquid (TSL), supplied. Install the wet-cup seal. If you supply your own hoses and spray gun, be sure the hoses are electrically conductive, that the 3. -
Page 7: Operation
Operation How to use the gun trigger safety Open or drain, position When engaged, the gun safety latch prevents the gun Closed, or spray position from accidental triggering. See Fig. 3. WARNING INJECTION HAZARD If the gun still sprays when the gun trig- ger safety is locked, repair the gun. - Page 8 Operation How to use the RAC IV tip guard. WARNING INJECTION HAZARD To reduce the risk of serious injury, Tip handle shown in whenever you are instructed to relieve spraying position. pressure, follow the Pressure Relief Turn handle 180 , Procedure on page 9.
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Page 9: Startup
Startup NOTE: Refer to Fig. 2 and the other figures referenced WARNING in the text as you start the sprayer. INJECTION HAZARD 1. Open the pressure drain valve (42). See Fig. 7. The system pressure must be manually relieved to prevent the system from 2. - Page 10 Startup b. If more coverage is needed, use a larger tip WARNING rather than increasing the pressure. FIRE AND EXPLOSION HAZARD To reduce the risk of static sparking and c. Adjust the direction of the spray pattern. See splashing when priming or flushing the Fig.
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Page 11: Shutdown And Care
Shutdown and Care WARNING WARNING INJECTION HAZARD INJECTION HAZARD See the warning section INJECTION To reduce the risk of serious injury, HAZARD on page 3 for information on whenever you are instructed to relieve the hazard of using damaged hoses. pressure, follow the Pressure Relief Procedure on page 9. -
Page 12: Flushing
Flushing When to Flush 3. Pour one-half gallon (2 liters) of compatible solvent into a grounded metal flushing pail. Put the suction 1. Before using a new sprayer: flush out the oil hose in the pail. which was left in to protect pump parts. 4. -
Page 13: Troubleshooting
Troubleshooting WARNING INJECTION HAZARD To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief Procedure on page 9. Basic Problem Solving Check everything in the troubleshooting table before disassembling the sprayer. TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check... - Page 14 Basic 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 Electrical 5. Check motor armature commutator for burn 5. Remove motor and have motor shop (continued) spots, gouges and extreme roughness.
- Page 15 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 Low output 3. Release gun trigger. Observe resting position of 3. If pump consistently comes to rest with (continued) pump rod (107).
- Page 16 Intermediate Problem Solving TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO When check is not OK, refer to this column If check is OK, go to next check 1. Spray tip worn beyond sprayer pressure capa- 1. Replace spray tip. Spray Pattern Variations bility.
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Page 17: Motor Test
Motor Test WARNING INJECTION HAZARD To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief Procedure on page 9. For checking armature, motor winding and brush electrical continuity. Setup Remove the drive housing. See page 24. This is to ensure that any resistance you notice in the armature test is due to the motor and not to worn gears in the drive housing. -
Page 18: General Repair Information
General Repair Information WARNING WARNING INJECTION HAZARD HOT SURFACE HAZARD During operation, the motor and drive To reduce the risk of serious injury, housing become very hot and could burn whenever you are instructed to relieve your skin if touched. Flammable materi- pressure, follow the Pressure Relief als spilled on the hot, bare motor could cause a fire Procedure on page 9. -
Page 19: Motor Brush
Motor Brushes NOTE: Replace brushes when worn to about 0.5 in. Motor lead; do not disconnect (12.5 mm). Always check both brushes. Brush Repair Minimum 0.5” (12.5 mm) Kit 236–967, which includes spring clip 112–766, is available for motors manufactured by Pacific Scientific. Included in Brush Repair Kit 236–967 NOTE: Replacement brushes may last only half as... - Page 20 Motor Brushes Test the brushes. WARNING a. Remove the pump connecting rod pin (17). MOVING PARTS HAZARD See Fig. 17, page 21. Do not touch the brushes, leads, springs or brush holders while the sprayer is b. With the sprayer OFF, turn the pressure con- plugged in to reduce the risk of electric trol knob fully counterclockwise to minimum shock and serious injury.
- Page 21 Fill the packing nut/wet-cup marked with an asterisk, i.e., (121*). For the best 1/3 full with Graco TSL. Push the plug (123) into results, use all the new parts in the kit, even if the old the wet-cup.
- Page 22 Motor 9. Align the new motor with the base and reinstall the WARNING screws (46). INJECTION HAZARD 10. Assemble the drive housing to the motor. Follow To reduce the risk of serious injury, steps 8 to 10 on page 24. whenever you are instructed to relieve 11.
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Page 23: Motor Start Board
On/Off Switch Motor Start Board NOTE: See Fig. 21 for this procedure. WARNING 1. Relieve pressure. 2. Remove the junction box screws (56) and lower INJECTION HAZARD the junction box (59). To reduce the risk of serious injury, 3. Remove the nut and rubber boot (55). whenever you are instructed to relieve pressure, follow the Pressure Relief 4. -
Page 24: Drive Housing, Connecting Rod, Crankshaft
Drive Housing, Connecting Rod, Crankshaft WARNING CAUTION INJECTION HAZARD Do not allow the gear (16) to fall; it may stay attached to the drive housing or to the motor. To reduce the risk of serious injury, whenever you are instructed to relieve Do not lose the thrust balls (11a or 4a) or let them pressure, follow the Pressure Relief fall between the gears, which will damage the drive... - Page 25 Drive Housing, Connecting Rod, Crankshaft REF A Torque to 80 in–lb (9 N.m) Quantity of three Quantity of one Apply a total of 3 fl. oz.(29 cc) of grease to gears. Note: Filter not shown 02815 Fig. 23...
- Page 26 Suction Hose WARNING CAUTION INJECTION HAZARD Misalignment or cross-threading will damage the parts and/or create shavings which can cause the To reduce the risk of serious injury, o–ring (27) to leak. whenever you are instructed to relieve pressure, follow the Pressure Relief Procedure on page 9.
- Page 27 Drain Valve Repair WARNING 1. Unscrew the spring retainer from the valve body. INJECTION HAZARD Remove the spring, washers and stem/ball. Clean any debris from the ball or seat area. To reduce the risk of serious injury, whenever you are instructed to relieve 2.
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Page 28: Pressure Control
Pressure Control 7. Loosely install the screws (63) and then torque WARNING them to 21 in–lb (2.4 N.m). INJECTION HAZARD 8. Install the front cover (13). Connect the harness To reduce the risk of serious injury, (A) to the motor start board (47). whenever you are instructed to relieve pressure, follow the Pressure Relief 9. -
Page 29: Sprayer Parts Drawing
Sprayer Parts Drawing Model 231–298, Series A Label See detail on page 30 REF 33 REF 32 OUTSIDE LABEL INSIDE LABEL... -
Page 30: Sprayer Parts List
Sprayer Parts List Model 231–298, Series A Ref. Ref. Part No. Description Qty. Part No. Description Qty. 111–700 GRIP, handle 235–008 MOTOR START BOARD includes items 47a and 47b 236–965 MOTOR KIT Includes items 4a to 4f 186–620 LABEL, ground terminal 100–069 . -
Page 31: Technical Data
......620 (164) Order the labels directly from Graco, free of Delivery ...... - Page 32 Graco distributor to the original purchaser for use. With the exception of any special extended or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.