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REPAIR
KEEP FOR REFERENCE.
Read this and all related manuals for
important warnings and instructions.
INSTRUCTIONS
190ES
Airless Paint Sprayers
3000 psi (207 bar, 20.7 MPa ) Maximum Working Pressure
120 VAC
232900, A
100-120 VAC
232903, A
220-240 VAC
232906, A
Related manuals
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General Repair Information
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GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
Table of Contents
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ECOPYRIGHT 1999, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
First choice when
quality counts.t
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309059
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309061
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309065
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Graco Warranty
309063
232900
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309064
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Rev. A
TI0051
309060
308644
15
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Table of Contents
Related Manuals for Graco 232903
Summary of Contents for Graco 232903
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Page 1: Table Of Contents
....... GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441 ECOPYRIGHT 1999, GRACO INC. Graco Inc. is registered to I.S. EN ISO 9001... - Page 2 WARNING ADVERTÊNCIA Poderá ocorrer incêndio e explosão quando for pulverizado ou injetado Fire and explosion hazard: Solvent and paint fumes can ignite or líquido inflamável numa área onde houver má circulação de ar; vapores explode. inflamáveis poderão incendiar-se a partir de uma chama ou fagulhas a To help prevent a fire and explosion: descoberto.
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Page 3: Component Function And Identification
Component Identification and Function TI0051 8050A Fig. 1 Motor DC motor, permanent magnet, fan cooled Drive Assembly Transfers power from DC motor to displacement pump Displacement Pump Transfers fluid to be sprayed from source through spray gun Fluid Outlet Spray gun is connected here Prime Valve Used to prime and drain sprayer (also relieves fluid outlet pressure) when open... - Page 4 General Repair Information Pressure Relief Procedure 1. Keep all screws, nuts, washers, gaskets, and electrical fittings removed during repair proce- dures. These parts are not normally provided with WARNING replacement assemblies. INJECTION HAZARD WARNING System pressure must be manually relieved to prevent system from starting ELECTRIC SHOCK HAZARD or spraying accidentally.
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Page 5: Grounding
Grounding WARNING Grounded Grounding Plug Outlets Improper installation or alteration of grounding plug results in risk of electric shock, fire or explosion that could cause serious injury or death. 1. 220–240 Vac models require a 50 Hz, 10A circuit with a grounding receptacle. 100–120 Vac models 240 Vac model shown require a 50/60 Hz, 15A circuit with a grounding Fig. - Page 6 Troubleshooting MOTOR WON’T OPERATE (Continued) WHAT TO CHECK WHAT TO DO TYPE OF PROBLEM If check is OK, go to next check When check is not OK refer to this column Basic Electrical Problems 5. That motor leads are securely fastened and 5.
- Page 7 Troubleshooting LOW OR FLUCTUATING OUTPUT WHAT TO CHECK WHAT TO DO TYPE OF PROBLEM If check is OK, go to next check When check is not OK refer to this column Low Output 1. For worn spray tip. 1. Follow Pressure Relief Procedure Warn- ing, then replace tip.
- Page 8 Troubleshooting LOW OR FLUCTUATING OUTPUT WHAT TO CHECK WHAT TO DO TYPE OF PROBLEM If check is OK, go to next check When check is not OK refer to this column Motor runs and pump strokes 1. Paint supply. 1. Refill and reprime pump. 2.
- Page 9 Troubleshooting MOTOR IS HOT AND RUNS INTERMITTENTLY WHAT TO CHECK WHAT TO DO TYPE OF PROBLEM If check is OK, go to next check When check is not OK refer to this column Motor is hot and runs intermit- 1. Determine if sprayer was operated at high 1.
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Page 10: Spin Test
Spin Test Setup Armature, Brushes, and Motor Wiring Open Circuit Test (Continuity) 1. Connect red and black motor leads together with Electric Shock Hazard; page 4. test lead. Turn motor fan by hand at about two revolutions per second. 2. If uneven or no resistance, check for: broken brush To check armature, motor winding and brush electrical springs, brush leads, motor leads;... - Page 11 Motor Brush Replacement 6. Fig. 5. Insert brush (B). Push clip (A) until it snaps 8. Inspect commutator for excessive pitting, burning into place and secures brush. or gouging. A black color on commutator is normal. Have commutator resurfaced by a motor repair shop if brushes wear too fast.
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Page 12: On/Off Switch Replacement
On/Off Switch Replacement 120 Vac (232900) Removal Installation 1. Install new ON/OFF switch (23). Install locking ring Relieve pressure; page 4. (24) and toggle boot (25). 2. Fig. 6. Remove four screws (18) and pressure control cover (39). 2. Connect two wires (A) to ON/OFF switch. 3. - Page 13 On/Off Switch Replacement 100 Vac (232903) Removal Installation 1. Install new ON/OFF switch (23). Install locking ring (24) and toggle boot (25). Relieve pressure; page 4. 2. Connect four wires (A) to ON/OFF switch (23). 2. Fig. 7. Remove four screws (18) and pressure 3.
- Page 14 On/Off Switch Replacement 240 Vac (232906) Removal Installation 1. Install new ON/OFF switch (23). Install locking ring Relieve pressure; page 4. (24) and toggle boot (25). 2. Fig. 8. Remove pressure control cover (39). 2. Connect four wires (A) to ON/OFF switch. 3.
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Page 15: Pressure Control Repair
Pressure Control Repair Motor Control Board Removal Installation 1. Clean pad on rear of motor control board. Apply Refer to Fig. 7, 8 or 9 depending on sprayer voltage. small amount of thermal compound 073019 to pad. 2. Fig. 6. Install motor control board (35) with five screws (36). - Page 16 Pressure Control Repair Pressure Control Transducer Pressure Adjust Potentiometer Removal Removal Refer to Fig. 7, 8 or 9 depending on sprayer voltage. Refer to Fig. 7, 8 or 9 depending on sprayer voltage. Relieve pressure; page 4. Relieve pressure; page 4. 2.
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Page 17: Drive Housing Replacement
Drive Housing Replacement 5. Remove two back screws (22). CAUTION 6. Pull drive housing (10) off of motor (1). Do not drop gear cluster (7) when removing drive housing (10). Gear cluster may stay engaged in Assembly motor front end bell or drive housing. 1. -
Page 18: Motor Replacement
Motor Replacement Disassembly 6. Remove strain relief (37, page 12, 13, 14). 7. Remove three screws (22) behind board and remove control housing (21). Relieve pressure; page 4. 8. Remove four screws (22) and motor (1) from frame (63). 2. Remove pump (13); Displacement Pump Re- Assembly placement, page 19. -
Page 19: Displacement Pump Replacement
1. Fig. 13. Extend pump piston rod fully. Apply grease to top of pump rod at (A) or inside connecting rod. Fig. 14 TI0063 7. Fig. 15. Fill packing nut with Graco TSL until fluid flows onto top of seal. TI0062 Fig. 13 2. -
Page 20: Technical Data
1–888–541–9788 to identify the nearest distributor. All written and visual data contained in this document reflects the latest product information available at the time of publication. Graco reserves the right to make changes at any time without notice. Sales Offices: Minneapolis, Detroit Foreign Offices: Belgium, Korea, Hong Kong, Japan www.graco.com...