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Graco True Airless LTS15 - User Manual

Graco True Airless LTS15
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3A3529C
EN
FIRE AND EXPLOSION HAZARD
LTS 15/LTS 17 Models:
• Use only non-flammable or water-based materials, or non-flammable paint thinners. Do not use
materials having flash points lower than 100° F (38° C). This includes, but is not limited to, acetone,
xylene, toluene, or naphtha. For more information about your material, request Safety Data Sheet
(SDS) from the supplier.
• Spraying flammable or combustible materials in a factory or fixed location must comply with NFPA
33 and OSHA 1910.94(c) requirements in the USA and with all similar local regulations in other
countries.
Not approved for use in explosive atmospheres or hazardous locations.
For portable airless spraying of architectural paints and coatings.
Important Safety Instructions
Read all warnings and instructions in this manual, related manuals, and on the unit.
Be familiar with the controls and the proper usage of the equipment. Save these
instructions.

Table of Contents

Questions and Answers

  • K
    Keith SosaAug 2, 2025
    Why does my Graco Paint Sprayer run but not prime?
    • K
      Kristen HernandezAug 2, 2025
      If your Graco Paint Sprayer runs but the pump doesn't prime or loses prime while in use, it could be due to several reasons. First, ensure the Prime/Spray valve is in the PRIME position until paint exits the drain tube. Check if the inlet strainer is clogged or the suction tube isn't immersed in paint; clean the strainer and ensure the tube is fully immersed. Also, the inlet valve ball might be stuck or dirty; try dislodging it with an Allen wrench or power flushing the sprayer. Thick paint can also cause this issue; try momentarily turning the ON/OFF switch off and on. Inspect the suction tube for leaks, and clean the outlet valve if it's stuck or dirty. Finally, strain the paint to remove any debris.
  • T
    Tammy KellyAug 10, 2025
    Why is paint leaking from the pump of my Graco Paint Sprayer?
    • D
      Dwayne RogersAug 10, 2025
      If paint is leaking down the outside of the pump of your Graco Paint Sprayer, it's likely that the pump packings are worn. You should replace the pump packings. If you have a ProLTS model, replace the pump packings with a new ProXChange module.
  • W
    William BlevinsAug 15, 2025
    How to prevent paint from running or sagging when using my Graco True Airless LTS15 Paint Sprayer?
    • C
      Chelsea PierceAug 15, 2025
      If your Graco Paint Sprayer is spraying paint that runs down the wall or sags, it's likely because the material is going on too thick. To resolve this, move the gun faster. You may also need to choose a spray tip with a smaller hole size or a wider fan, and ensure the gun is far enough from the surface.
  • B
    Becky ReillyAug 19, 2025
    What to do if my Graco True Airless LTS15's coverage is inadequate?
    • E
      Elizabeth WallAug 19, 2025
      If your Graco Paint Sprayer is spraying with inadequate coverage, it's likely that the material is going on too thin. To fix this, move the gun slower. You might also need to choose a spray tip with a larger hole size or a narrower fan, and make sure the gun is close enough to the surface.
  • X
    Xavier VegaAug 23, 2025
    Why is the motor on my Graco Paint Sprayer hot and running intermittently?
    • Q
      qbarnesAug 23, 2025
      If the motor of your Graco Paint Sprayer is hot and runs intermittently, and automatically shuts off due to excessive heat, ensure that the vent holes in the enclosure are not plugged and that the sprayer is open to air. Replace any extension cord that is too long or not heavy enough gauge. If you are using an electrical generator, make sure it has a proper voltage regulator.
  • D
    Dustin CoxAug 28, 2025
    Why can't I trigger the spray gun on my Graco True Airless LTS15?
    • R
      rachelhernandezAug 28, 2025
      If you cannot trigger the spray gun on your Graco Paint Sprayer, check if the spray gun trigger lock is engaged. Rotate the trigger lock to disengage it.
  • J
    Javier BrockNov 5, 2025
    What to do if my Graco True Airless LTS15 Paint Sprayer is primed but not spraying correctly?
    • W
      Wanda ReynoldsNov 6, 2025
      If your Graco Paint Sprayer is primed but can't achieve a good spray pattern, it could be due to several factors. Start by clearing any clogs from the spray tip and ensuring the reversible spray tip is in the SPRAY position. Strain the paint to remove any debris. Adjust the pressure to the desired spray setting. If you have a ProLTS model, clean or replace the InstaClean fluid filter. Also, check and clean or replace the spray gun fluid filter. Ensure the spray tip isn't too large or worn out for the sprayer's capability and that the spray tip gasket and seal are in good condition. Make sure the inlet strainer is clean, the suction tube is immersed in paint, and the extension cord isn't too long or of insufficient gauge. Inspect the inlet and outlet pump valves for wear or clogs, and thin ...

Summary

Safety Warnings

Grounding and Electrical Safety

Details requirements for proper grounding and safe use of extension cords to prevent electric shock.

Fire and Explosion Hazards

Outlines precautions to prevent fires and explosions from flammable fumes and materials.

Fluid Injection and Material Hazards

Warns about skin injection hazards from high-pressure fluid and material incompatibility risks.

Equipment Misuse and Personal Protection

Covers hazards from equipment misuse and the importance of wearing appropriate personal protective equipment.

California Proposition 65

States the product contains chemicals known to cause cancer or reproductive harm.

Know Your Sprayer

LTS 15 Stand Model Components

Identifies and labels the components of the LTS 15 Stand Model sprayer.

LTS 17 Cart Model Components

Identifies and labels the components of the LTS 17 Cart Model sprayer.

ProLTS 170 Stand Model Components

Identifies and labels the components of the ProLTS 170 Stand Model sprayer.

ProLTS 190 Cart Model Components

Identifies and labels the components of the ProLTS 190 Cart Model sprayer.

Setup

Assemble Your Sprayer

Step-by-step guide for assembling the Graco sprayer for the first use.

Strain the Paint

Recommends straining paint before use to prevent clogs and priming issues.

Start Up Procedures

Pressure Relief Procedure

Details the essential steps to safely relieve pressure from the sprayer system.

Flush Storage Fluid

Instructions for flushing out factory test material before initial use.

Inlet Valve Removal and Priming Troubleshooting

Guides on removing the inlet valve and troubleshooting priming issues.

Fill Pump and Gun

Steps for filling the pump and gun with paint, preparing for spraying.

How to Spray

Spray Tip Installation

Instructions for correctly installing the spray tip and tip guard to prevent leaks.

Adjust Pressure and Select Tip

Guidance on adjusting pressure control and selecting the appropriate spray tip.

Spray Techniques and Pattern Quality

Techniques for aiming, triggering, and achieving a good spray pattern, plus clearing clogs.

Cleanup

Cleaning from a Pail

Step-by-step process for cleaning the sprayer using a pail and flushing fluid.

Cleanup with Power Flush Adapter

Method for faster cleanup using a power flush adapter for water-based materials.

Cleaning Filters and Gun

Procedures for cleaning the InstaClean filter and the spray gun components.

Storage

Short Term Storage (Up to 2 Days)

Instructions for properly storing the sprayer for short periods.

Long Term Storage (More Than 2 Days)

Guidelines for long-term storage, including using Pump Armor fluid.

Reference Information

Spray Tip Selection and Fan Width

Guidance on choosing spray tips based on material and desired fan width.

Cleaning Fluid Compatibility

Information on using appropriate cleaning fluids for different material types.

Static Grounding Instructions

Procedures for safe static grounding when using oil-based materials and solvents.

Quick Reference Guide

A quick lookup for sprayer component names and their functions.

Maintenance

Routine Maintenance and Inspections

Schedule for daily checks of components like filters, hoses, and tips.

Pump Maintenance and Removal (ProLTS)

Procedures for pump repair, including removal and installation for ProLTS models.

Pump Installation

Steps for correctly installing the pump assembly onto the sprayer.

Troubleshooting

Motor and Power Issues

Solutions for problems related to the motor not running or the sprayer not powering on.

Pump Priming and Pressure Issues

Addresses issues where the pump fails to prime or loses prime during use.

Spray Pattern and Performance Issues

Solutions for problems affecting the spray pattern, coverage, and gun operation.

Operational and Motor Shutdown Issues

Troubleshooting for issues like sagging paint, inadequate coverage, and motor overheating.

LTS 15: 17 K955 Stand Sprayer Parts

Exploded View and Torque Specs

Diagram showing parts of the LTS 15 Stand Model with torque values for assembly.

Parts List

Comprehensive list of part numbers and descriptions for the LTS 15 Stand Model.

LTS 17: 17 K960 Cart Sprayer Parts

Exploded View and Torque Specs

Diagram showing parts of the LTS 17 Cart Model with torque values for assembly.

Parts List

Comprehensive list of part numbers and descriptions for the LTS 17 Cart Model.

ProLTS 170: 17 H198 Stand Sprayer Parts

Exploded View and Torque Specs

Diagram showing parts of the ProLTS 170 Stand Model with torque values for assembly.

Parts List

Comprehensive list of part numbers and descriptions for the ProLTS 170 Stand Model.

ProLTS 190: 17 H206 Cart Sprayer Parts

Exploded View and Torque Specs

Diagram showing parts of the ProLTS 190 Cart Model with torque values for assembly.

Parts List

Comprehensive list of part numbers and descriptions for the ProLTS 190 Cart Model.

ProXChange Pump Parts (ProLTS only)

Exploded View and Torque Specs

Diagram of ProXChange pump parts with torque specifications for repair.

Pump Parts List

Detailed list of part numbers for the ProXChange pump assembly.

Wiring Diagrams

LTS 15;LTS 17 Wiring Diagram

Electrical schematic for the LTS 15 and LTS 17 models.

ProLTS 170;ProLTS 190 Wiring Diagram

Electrical schematic for the ProLTS 170 and ProLTS 190 models.

Technical Specifications

US and Metric Specifications

Table detailing sprayer specifications, dimensions, and power requirements in US and Metric units.

Graco Standard Warranty

Warranty Terms and Conditions

Outlines the terms, conditions, and limitations of the Graco standard equipment warranty.

Graco Information

Product Information and Ordering

Provides website links for product information and contact details for placing orders.

Graco True Airless LTS15 Specifications

General IconGeneral
TypeAirless Paint Sprayer
Spray TechnologyTrueAirless
Max Pressure3000 psi
Flow Rate0.27 GPM
Weight19 lbs
Hose Length50 ft
Power SourceElectric
Motor TypeUniversal
Nozzle Size0.015 inch

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