Graco 308550ZAC important safety instructions Troubleshooting, Problem Cause Solution

Page 14

Troubleshooting

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 12.

1.Relieve the pressure before checking or servicing the equipment.

2.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 (301), seats

Replace. See page 18.

pressure at stall.

(201) or o-rings (202).

 

 

 

 

Pump will not cycle, or cycles once

Air valve is stuck or dirty.

Disassemble and clean air valve.

and stops.

 

See pages 16–17. Use filtered air.

 

 

 

 

Check valve ball (301) severely

Replace ball and seat. See page

 

worn and wedged in seat (201) or

18.

 

manifold (102 or 103).

 

 

 

 

 

Check valve ball (301) is wedged

Install Pressure Relief Valve

 

into seat (201), due to overpressur-

(see page 10).

 

ization.

 

 

 

 

 

Dispensing valve clogged.

Relieve pressure and clear valve.

 

 

 

Pump operates erratically.

Clogged suction line.

Inspect; clear.

 

 

 

 

Sticky or leaking balls (301).

Clean or replace. See page 18.

 

 

 

 

Diaphragm ruptured.

Replace. See pages 19–22.

 

 

 

 

Restricted exhaust.

Remove restriction.

 

 

 

Air bubbles in fluid.

Suction line is loose.

Tighten.

 

 

 

 

Diaphragm ruptured.

Replace. See pages 19–22.

 

 

 

 

Loose inlet manifold (102), dam-

Tighten manifold bolts (112) or re-

 

aged seal between manifold and

place seats (201) or o-rings (202).

 

seat (201), damaged o-rings (202).

See page 18.

 

 

 

 

Loose fluid side diaphragm plate

Tighten or replace. See pages

 

(105).

19–22.

 

 

 

14 308550

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Contents Instructions Parts List Important Safety InstructionsTable of Contents ModelsSymbols Equipment Misuse HazardToxic Fluid Hazard Tighten Screws Before First Use InstallationGeneral Information Toxic Fluid HazardGrounding Ground all of this equipmentTypical FLOOR-MOUNT Installation Air LineFluid Suction Line Installation of Remote Pilot Air LinesMountings Fluid Outlet LineFlange Connections Bolt Tightening SequenceChanging the Orientation of the Fluid Inlet and Outlet Ports Fluid Pressure Relief ValveVenting Exhaust AIR Air Exhaust VentilationFire and Explosion Hazard Operation Pressure Relief ProcedureStarting and Adjusting the Pump Flush the Pump Before First UseMaintenance Troubleshooting Problem Cause SolutionTroubleshooting Disassembly ServiceRepairing the Air Valve Tools RequiredReassembly Ball Check Valve Repair Relieve the pressure. Disconnect all hosesDiaphragm Repair Reassembly Standard Diaphragms Reassembly Overmolded Diaphragms 105 19 402 24 104 403 Bearing and Air Gasket Removal Detail of Air Valve Bearings 308550 Pump Matrix Husky 2150 Polypropylene and Pvdf Pumps, Series aRepair Kit Matrix For Husky 2150 Polypropylene and Pvdf Pumps, Series aAir Motor Parts List Matrix Column PartsFluid Section Parts List Matrix Column MufflerDiaphragm Parts List Matrix Column Seat Parts List Matrix ColumnBall Parts List Matrix Column 114 Torque Sequence Side View Pump Mounting Hole Pattern DimensionsFront View Technical Data 14-0.8 MPa, 1.4-8 barPsi MPa, bar Performance ChartFeet meters Fluid Flow GPM lpmGraco Warranties Graco Information

308550ZAC specifications

The Graco 308550ZAC is a versatile and efficient airless paint sprayer designed for both DIY enthusiasts and professional contractors. Known for its reliability and performance, this unit provides consumers with a powerful solution for their painting projects, ensuring a smooth and even finish.

One of the standout features of the Graco 308550ZAC is its ProXChange technology. This innovative system allows for quick and easy pump replacement without the need for additional tools or complex procedures. This feature ensures minimal downtime, making it especially valuable on job sites where time efficiency is crucial.

The sprayer is also equipped with a powerful electric motor that delivers a consistent pressure of up to 3000 PSI. This high pressure not only facilitates a fine atomization of paint but also enables users to work with a variety of coatings, including thicker materials like latex, stains, and sealers. As a result, users can achieve professional-grade finishes on a range of surfaces, from buildings to fences.

Another significant characteristic of the Graco 308550ZAC is its adjustable pressure control. This feature allows operators to fine-tune the pressure according to the specific paint being used and the project's requirements. This flexibility translates to improved control over the spraying process, minimizing overspray and ensuring precision, particularly when working on detailed areas.

Additionally, the unit comes with a built-in suction hose, which can be submerged directly into paint containers for efficient and seamless painting. This capability makes it easier to use large buckets, reducing the hassle of constantly refilling the sprayer and enhancing productivity.

The Graco 308550ZAC also features a lightweight and portable design, making it easier to transport between job sites. Its robust construction ensures durability, while the ergonomic handle offers comfort during extended use.

In summary, the Graco 308550ZAC is a robust airless paint sprayer that combines advanced technologies and thoughtful design features to meet the needs of both professionals and hobbyists. With its ProXChange system, adjustable pressure control, and high-performance motor, it represents an excellent choice for achieving flawless finishes in various painting applications.
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