Troubleshooting

Troubleshooting

Relieve the pressure (page 10) before checking or servicing the equipment.

Check all possible problems and causes before disassembling the pump.

Problem

Cause

Solution

 

 

 

 

 

 

Pump cycles at stall or fails to hold

Worn check valve balls (26), seats

Replace. See page 20.

pressure at stall.

(31), or ball guides (32).

 

 

 

 

Pump will not cycle, or cycles once

Stuck or dirty air valve.

Disassemble and clean air valve. See

and stops.

 

page 16. Use filtered air.

 

 

 

 

Check valve ball (26) severely worn

Replace ball and seat. See page 20.

 

and wedged in seat (31).

 

 

 

 

 

Check valve ball (26) wedged in seat

Replace. See page 20. Do not

 

(31) due to overpressurization.

exceed the maximum fluid working

 

 

pressure, see page 24.

 

 

 

 

Clogged fluid dispensing valve.

Relieve pressure and clear valve.

 

 

 

 

Pinched hose line.

Check lines.

 

 

 

Pump operates erratically.

Clogged suction line.

Inspect; clear.

 

 

 

 

Sticky or leaking check valves.

Clean or replace balls (26) and seats

 

 

(31). See page 20.

 

 

 

 

Ruptured diaphragm (9).

Replace. See page 13.

 

 

 

 

Restricted exhaust.

Remove restriction.

 

 

 

Air bubbles in fluid.

Loose suction line.

Tighten.

 

 

 

 

Ruptured diaphragm (9).

Replace. See page 13.

 

 

 

Pump running irregularly. Stroke fre-

Worn parts.

Replace worn parts. Check com-

quency dropping, coming to stand-

 

pressed air supply.

still.

 

 

Icing caused by: compressed air too

Remove ice by changing operating

 

 

moist, stroke frequency too high,

conditions.

 

local temperature too low.

 

 

 

 

Air escapes continually.

Damaged air valve cup (15) or seat.

Replace damaged parts. See page

 

 

16.

 

 

 

 

Foreign matter inside pump.

Check air filter.

 

 

 

Pump does not start, or pressure

Worn check valve seats.

Replace. See page 20.

fluctuates.

 

 

Inlet strainer blocked, maximum suc-

Clean strainer. Replace defective

 

 

tion exceeded, hose or seal defec-

parts.

 

tive.

 

 

 

 

 

Contaminated fluid. Pump installed or

Check fluid supply. Follow installa-

 

operated incorrectly.

tion and operation instructions in this

 

 

manual.

 

 

 

12

311688D

Page 11 Page 13
Page 12
Image 12
Graco 3D150 important safety instructions Troubleshooting, Problem Cause Solution
Page 11 Page 13

3D150 specifications

The Graco 3D150 is a prominent name in the airless paint sprayer market, specifically engineered for both professionals and serious DIY enthusiasts. This machine is lauded for its reliability, efficiency, and exceptional quality, making it a top choice for a myriad of painting projects, from small residential jobs to larger commercial applications.

One of the standout features of the Graco 3D150 is its robust 1.5 horsepower motor. This powerful engine allows for an impressive flow rate, enabling users to cover large areas quickly and efficiently. This feature is particularly beneficial for those working on extensive projects where time is of the essence, helping to reduce labor costs and overall project durations.

The Graco 3D150 also utilizes advanced ProConnect technology, which enables users to quickly and easily replace the pump without the need for additional tools. This system not only minimizes downtime when servicing the sprayer but also enhances its overall durability and lifespan. Users can enjoy hassle-free maintenance, making it an ideal choice for contractors who rely on their equipment day in and day out.

Additionally, the sprayer features an adjustable pressure control system, allowing users to customize the output according to their specific needs. This flexibility ensures that paint is applied evenly and smoothly, regardless of the surface or coating type. The Graco 3D150 supports a variety of spray tips, accommodating different materials and project requirements, whether it's thick latex paints, stains, or sealers.

Another key characteristic of the Graco 3D150 is its lightweight design and compact structure. This makes the sprayer easy to transport and maneuver, especially in tight spots or multi-story projects. The well-designed handle and wheels enhance portability, ensuring that users can work efficiently without the burden of heavy equipment.

The Graco 3D150 incorporates a high-efficiency airless spray mechanism that minimizes overspray while maximizing coverage. This technology not only saves material costs but also ensures a cleaner working environment. Overall, with its combination of performance, user-friendliness, and innovative features, the Graco 3D150 stands out as an excellent investment for anyone serious about achieving professional-quality results in their painting projects.
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