Graco NOVA - User Manual

824191
Rev. C
REPAIR
INSTRUCTIONS
KEEP FOR REFERENCE.
Read this and all related manuals for
important warnings and instructions.
NOVA/ NOVApro/ SuperNOVApro
Airless Paint Sprayers
3000 psi (210 bar, 21 MPa ) Maximum Working Pressure
120 VAC
Type Series Stand Lo-Boy Hi-Boy
NOVA B 824920
A 824922
NOVApro B 824932
A 824930
SuperNOVApro B 824940 824942
A 824941
Table of Contents
Component Function and Identification 3. . . . . . . . . . . .
Grounding 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Repair Information 4. . . . . . . . . . . . . . . . . . . . . .
Spin Test 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Motor Brush Replacement 10. . . . . . . . . . . . . . . . . . . . .
On/Off Switch Replacement 12. . . . . . . . . . . . . . . . . . . .
Pressure Control Repair 13. . . . . . . . . . . . . . . . . . . . . . .
Drive Housing Replacement 15. . . . . . . . . . . . . . . . . . . .
Motor Replacement 16. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement Pump Replacement 17. . . . . . . . . . . . . . .
Technical Data 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sherwin–Williams Standard Warranty 19. . . . . . . . . . . .
Phone Number 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The SHERWIN–WILLIAMS COMPANY, CLEVELAND, OHIO 44115
COPYRIGHT 1999, GRACO INC.
824920
309054. . . . . . .
309053. . . . . . .
309055. . . . . . .
Related Manuals
309070. . . . . . .
824190. . . . . . .
9546A
824192. . . . . . .

Graco NOVA Specifications

General

Brand	Graco
Model	NOVA
Category	Sprayer
Language	English

Summary

Component Identification and Function

Component Identification

Identifies and describes the various parts of the sprayer system.

General Repair Information

Pressure Relief Procedure

Steps to safely relieve pressure before servicing the sprayer.

General Safety Warnings

Covers electrical shock, hot surfaces, and explosion hazards during operation.

Troubleshooting

Grounding

Explains proper grounding procedures and hazards of improper grounding.

Motor Wont Operate Troubleshooting

Diagnoses and resolves issues when the motor fails to start or run.

Basic Electrical Problems Troubleshooting

Addresses issues with motor leads, brushes, springs, and commutator.

Low or Fluctuating Output

Low Output Troubleshooting

Diagnoses and resolves problems causing reduced or inconsistent fluid output.

Motor Runs and Pump Strokes Troubleshooting

Motor Runs But Pump Does Not Stroke Troubleshooting

Motor is Hot and Runs Intermittently

Intermittent Motor Operation Troubleshooting

Diagnoses causes for the motor overheating and running intermittently.

Electrical Short

Electrical Short Troubleshooting

Resolves issues caused by electrical shorts, breaker trips, or wiring damage.

Sprayer Quits After Operation Troubleshooting

Addresses issues where the sprayer stops working after 5-10 minutes of operation.

Spin Test

Armature, Brushes, and Motor Wiring Open Circuit Test

Armature Short Circuit Test

Motor Brush Replacement

Motor Brush Removal

Motor Brush Installation

Pressure Control Repair

Motor Control Board Removal

Motor Control Board Installation

Motor Control Board Diagnostics

Drive Housing Replacement

Drive Housing Disassembly

Drive Housing Assembly

Motor Replacement

Motor Disassembly

Motor Assembly

Displacement Pump Replacement

Displacement Pump Removal

Displacement Pump Installation