Graco ULTRA MAX 795 User Manual

308842
Rev. H
First choice when
quality counts.
INSTRUCTIONS-REPAIR
INSTRUCTIONS
KEEP FOR REFERENCE.
Read this and all related manuals for
important warnings and instructions.
ULTRAMAX 795 and 1095
Airless Paint Sprayers
3000 psi (210 bar, 21 MPa ) Maximum Working Pressure
230 VAC
Model Series Description
232144 A Ultra Max 795
Hi-boy with RAC IV tip, gun and hose
232145 A Ultra Max 795
Lo-boy with RAC IV tip, gun and hose
232154 A Ultra Max 1095
Hi-boy with RAC IV tip, gun and hose
110 VAC
Model Series Description
232148 A Ultra Max 795
Hi-boy with RAC IV tip, gun and hose
232158 A Ultra Max 1095
Hi-boy with RAC IV tip, gun and hose
100 VAC
Model Series Description
232156 A Ultra Max 1095 Hi-boy
232157 A Ultra Max 1095 Lo-boy
Table of Contents
Component Function and Identification 2. . . . . . . . . . . .
Grounding 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spin Test 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Repair Information 3. . . . . . . . . . . . . . . . . . . . . .
Motor Brush Replacement 9. . . . . . . . . . . . . . . . . . . . . .
On/Off Switch Replacement 11. . . . . . . . . . . . . . . . . . . .
Pressure Control Repair 12. . . . . . . . . . . . . . . . . . . . . . .
Bearing Housing & Connecting Rod Replacement 14.
Drive Housing Replacement 15. . . . . . . . . . . . . . . . . . . .
Motor Replacement 16. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement Pump Repair 17. . . . . . . . . . . . . . . . . . . . .
Parts Drawing – Sprayer 18. . . . . . . . . . . . . . . . . . . . . . .
Parts List – Sprayer 19. . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Diagram 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Number 24. . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Warranty 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
COPYRIGHT 1998, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001
Model 232144
8050A
Related Manuals
Operator 308840. . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement Pump 308798. . . . . . . . . . . . . . . . .
Spray Gun 307614. . . . . . . . . . . . . . . . . . . . . . . . .
Spray Tip 308644. . . . . . . . . . . . . . . . . . . . . . . . . . .
PC Board 308816. . . . . . . . . . . . . . . . . . . . . . . . . .
All models are not available in all countries
U.S. PATENT NO. 4,323,741; 4,397,610 PATENTED
1983, CANADA AND OTHER PATENTS PENDING

Graco ULTRA MAX 795 Specifications

General

Maximum Pressure	3300 PSI
Maximum Working Pressure	3300 PSI
Power Source	Electric
Voltage	120V
Amperage	15A

Summary

Sprayer Instructions and Repair Guide

ULTRA MAX 795/1095 Sprayer Overview

Introduces the Graco Ultra Max 795 and 1095 airless paint sprayers, including model identification.

Sprayer Component Identification

Key Sprayer Component Identification

Identifies and describes the main components of the Graco airless paint sprayer, illustrated with a diagram.

General Sprayer Repair Information

Repair, Safety, and Grounding Procedures

Covers essential repair guidelines, safety precautions, tool lists, grounding, and pressure relief procedures.

Troubleshooting Motor Operation

Diagnosing Motor Won't Operate Issues

Provides guidance on diagnosing and resolving issues when the sprayer motor does not operate.

Troubleshooting Electrical and Mechanical Issues

Basic Electrical & Mechanical Troubleshooting

Addresses common electrical problems, including loose connections, brush issues, and motor control board diagnostics.

Troubleshooting Output and Performance

Low Output and Performance Troubleshooting

Offers solutions for low output problems, worn parts, and motor stall conditions in the sprayer.

Troubleshooting Pump and Pressure Issues

No Output and Pressure Fluctuations

Covers troubleshooting steps for zero output, pump stroke issues, and excessive pressure variations.

Troubleshooting Motor and Electrical Faults

Intermittent Motor & Electrical Short Troubleshooting

Details causes and solutions for motors that run intermittently and electrical shorts that trip breakers.

Motor Spin Test and Brush Replacement

Spin Test for Armature and Motor Continuity

Explains how to perform a spin test to check armature, motor winding, and brush continuity.

Motor Brush Replacement Procedure

Provides a step-by-step guide for removing and replacing worn motor brushes.

Motor Brush Installation and Testing

Installing and Breaking-In Motor Brushes

Details the process for installing new motor brushes and a break-in procedure.

On/Off Switch Replacement Procedure

Replacing the Sprayer's ON/OFF Switch

Guides users through the safe removal and installation of the ON/OFF switch.

Pressure Control System Repair

Motor Control Board Replacement & Diagnostics

Covers replacing the motor control board and interpreting diagnostic LED blink codes.

Pressure Control Components and Diagnostics

Digital Display Messages & Troubleshooting

Explains digital display error codes and their corresponding actions for pressure control issues.

Pressure Transducer & Potentiometer Replacement

Details removal/installation for the pressure control transducer and potentiometer.

Bearing Housing & Connecting Rod Replacement

Replacing Bearing Housing & Connecting Rod

Provides instructions for removing and installing the bearing housing and connecting rod assembly.

Drive Housing Replacement Procedure

Drive Housing Replacement Steps

Outlines steps to remove/replace drive housing, including greasing and alignment.

Motor Replacement Procedure

Steps for Replacing the Sprayer Motor

Details removing the old motor and installing a new one, including lubrication and wiring.

Displacement Pump Repair Guide

Pump Removal and Installation

Guides users through the removal and installation of the displacement pump, including safety warnings.

Hi-Boy Sprayer Parts Drawing

Exploded View of Hi-Boy Sprayer Components

Illustrates the assembly of Graco Ultra Max Hi-Boy sprayers with numbered parts.

Hi-Boy Sprayer Parts List

Detailed Parts List for Hi-Boy Models

Provides a comprehensive list of parts, part numbers, and quantities for Hi-Boy sprayers.

Lo-Boy Sprayer Parts Drawing

Exploded View of Lo-Boy Sprayer Components

Shows the assembly of Graco Ultra Max Lo-Boy sprayers with a diagram of all parts.

Lo-Boy Sprayer Parts List

Detailed Parts List for Lo-Boy Models

Lists all components, part numbers, and quantities for Lo-Boy sprayers.

Combined Sprayer Models Parts Drawing

Exploded View of Various Sprayer Components

Presents an illustrated breakdown of components common to multiple sprayer models.

Combined Parts List & Wiring Diagram

Parts List and Wiring Schematic for Sprayers

Provides a comprehensive parts list and a wiring diagram for Graco Ultra Max sprayers.

Sprayer Accessories & Technical Data

Sprayer Accessories & Safety Labels

Lists available accessories and DANGER labels for the sprayer, with placement guidance.

Sprayer Technical Specs & Dimensions

Details technical data, power requirements, performance ratings, and physical dimensions.