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Graco EM 390 User Manual

Graco EM 390
28 pages
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Graco EM 390 Specifications

General IconGeneral
Motor0.65 hp DC
Hose Length50 ft
Voltage120 V
TypeAirless
Flow Rate0.47 GPM
Weight34 lb
Maximum Tip Size0.021 inch
Tip Size0.021 in

Summary

DANGER Warnings

Fire and Explosion Hazard

High pressure spray, flammable liquids, confined areas can cause fire or explosion.

Skin Injection Hazard

High pressure fluid can be injected into the body by leaks, causing serious injury.

Safety Warnings and Procedures

Fluid Injection Hazard and Safety Precautions

Covers general injection risks, medical alerts, gun safety devices, and tip/guard safety.

Pressure Relief Procedure

Critical steps to relieve system pressure before servicing or cleaning to prevent injury.

Equipment Safety and Hose Handling

Hose Safety and Grounding Requirements

Proper hose use, strain reliefs, connections, and grounding continuity are vital for safety.

Sprayer Components and Setup

Electrical Setup and Grounding

Extension Cords and Grounding

Guidelines for selecting and using extension cords and ensuring proper grounding.

Sprayer Operation - Startup

Startup and Priming Procedure

Step-by-step guide for safely starting the sprayer and priming the pump.

Sprayer Operation - Spraying

Shutdown and Care

Flushing Guidelines

Application Methods

Troubleshooting Guide - Motor and Pump

Motor Operation Issues

Solutions for problems like electric motor not running or stopping during spraying.

Pump Output and Stroking Problems

Diagnosing and fixing issues with low paint output or the pump not stroking.

Troubleshooting Guide - Spray and Leaks

Spray Pattern and Leak Issues

Solutions for tails/fingers in spray pattern, paint runs/sags, and leaks into wet-cup.

Surging, Spitting, and Static Sparking

Troubleshooting for surging, spitting from the gun, and static sparking.

Component Repair - Rod and Bearing

Displacement Pump Removal and Disassembly

Displacement Pump Reassembly

Wiring Diagram

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