Table of Contents
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REPAIR
KEEP FOR REFERENCE.
Read this and all related manuals for
important warnings and instructions.
INSTRUCTIONS
NOVAt/ NOVAprot/ SuperNOVAprot
Airless Paint Sprayers
3000 psi (210 bar, 21 MPa ) Maximum Working Pressure
120 VAC
Type
Series
NOVA
B
A
NOVApro
B
A
SuperNOVApro
B
A
Related Manuals
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309070
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824190
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309054
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824192
Component Function and Identification
Grounding
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Troubleshooting
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General Repair Information
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The SHERWIN-WILLIAMS COMPANY, CLEVELAND, OHIO 44115
Stand
Lo-Boy Hi-Boy
824920
824922
824932
824930
824940
824942
824941
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Table of Contents
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ECOPYRIGHT 1999, GRACO INC.
309053
309055
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5
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10
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824191
824920
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Rev. C
9546A
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Table of Contents
Related Manuals for Graco NOVA
Summary of Contents for Graco NOVA
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Page 1: Table Of Contents
....... . The SHERWIN–WILLIAMS COMPANY, CLEVELAND, OHIO 44115 ECOPYRIGHT 1999, GRACO INC. - 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.
- Page 3 Component Identification and Function 8050A Fig. 1 Motor DC motor, permanent magnet, totally enclosed, 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...
- Page 4 General Repair Information Pressure Relief Procedure 1. Keep all screws, nuts, washers, gaskets, and electrical fittings removed during repair procedures. These parts are not normally provided WARNING with replacement assemblies. INJECTION HAZARD WARNING System pressure must be manually relieved to prevent system from starting ELECTRIC SHOCK HAZARD or spraying accidentally.
- Page 5 Grounding WARNING Improper installation or alteration of grounding plug Grounded Grounding Plug results in risk of electric shock, fire or explosion Outlets that could cause serious injury or death. 1. All models require a 60 Hz, 15A circuit with a 120 Vac grounding receptacle.
- Page 6 Troubleshooting MOTOR WON’T OPERATE (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 Basic Electrical Problems 1. That motor leads are securely fastened and 1.
- Page 7 Troubleshooting LOW OR FLUCTUATING OUTPUT 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 1. For worn spray tip. 1. Follow Pressure Relief Procedure Warn- ing, then replace tip.
- Page 8 Troubleshooting LOW OR FLUCTUATING OUTPUT 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 Motor runs and pump strokes 1. Paint supply. 1. Refill and reprime pump. 2.
- Page 9 Troubleshooting MOTOR IS HOT AND RUNS INTERMITTENTLY 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 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. To check armature, motor winding and brush electrical 2. - Page 11 Motor Brush Replacement 4. Fig. 5. Push in spring clip (A) to release hook (B) from brush holder (C). Pull out spring clip (A). 5. Fig. 5. Pull brush lead (D) out of terminal (E). Remove brush (F). Motor lead; do not disconnect Minimum 0.5”...
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Page 12: On/Off Switch Replacement
On/Off Switch Replacement Removal Installation 1. Install new ON/OFF switch (23). Install locking ring Relieve pressure; page 4. (24) and toggle boot (25). 2. Fig. 7. Remove four screws (18) and pressure control cover (39). 2. Connect two wires (A) to ON/OFF switch. 3. -
Page 13: Pressure Control Repair
Pressure Control Repair Motor Control Board Removal Installation Refer to Fig. 7. 1. Clean pad on rear of motor control board. Apply small amount of thermal compound 073019 to pad. 2. Fig. 7. Install motor control board (35) with five Relieve pressure;... - Page 14 Pressure Control Repair Pressure Control Transducer Pressure Adjust Potentiometer Removal Removal Refer to Fig. 7. Refer to Fig. 7. Relieve pressure; page 4. Relieve pressure; page 4. 2. Remove four screws (18) and cover (39). 2. Remove four screws (18) and cover (39). 3.
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Page 15: Drive Housing Replacement
Drive Housing Replacement Assembly CAUTION 1. Push drive housing (10) onto motor (1) Do not drop gear cluster (7) when removing drive housing (10). Gear cluster may stay engaged in 2. Install two front screws (22). motor front end bell or drive housing. Disassembly 3. -
Page 16: 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 Assembly Replacement, page 17. -
Page 17: Displacement Pump Replacement
Displacement Pump Replacement See manual 309053 for pump repair instructions. See manual 309057 or 309058 for sprayer part number references. Removal 1. Flush pump (13). 4. Cycle pump until pump pin (9a) is in position to be removed. Remove pump pin (9a). 5. -
Page 18: Technical Data
Motor HP Cycles per Delivery gpm Maximum Fluid Outlet ∅, A, Hz Model gallon (liter) (lpm) Tip size npsm NOVA 1, 15, 60 3000 1/2 (373) 680 (180) 0.38 (1.25) 0.019 1/4 in. NOVApro 1, 15, 60 3400 5/8 (466) 680 (180) 0.46 (1.74) -
Page 19: Sherwin-Williams Standard Warranty
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. -
Page 20: Phone Number
Phone Number TO PLACE AN ORDER OR FOR SERVICE, contact your Graco distributor, or call 1–800–690–2894 to identify the nearest distributor. All written and visual data contained in this document reflect the latest product information available at the time of publication.