Graco Inc 390sts, 308-548, 231-353 manual Setup

Page 6

Setup

WARNING

If you supply your own hoses and spray gun, be sure the hoses are electrically conductive, that the gun has a tip guard, and that each part is rated for at least 2750 psi (195 bar) Working Pressure. This is to reduce the risk of serious injury caused by static sparking, fluid injection or over-pressurization and rupture of the hose or gun.

CAUTION

To avoid damaging the pressure control, which may result in poor equipment performance and component damage, follow these precautions:

1.Always use a nylon spray hose at least 50 ft.

(15 m) long.

2.Never use a wire braid hose as it is too rigid to act as a pulsation dampener.

3.Never install any shutoff device between the filter and the hose. See Fig. 2.

1.Connect the hose (74) and gun (67) and screw it onto the outlet nipple (28). Don’t use thread sealant, and don’t install the spray tip yet!

￿1/4 npsm(m) fluid outlet

2Do not install any shutoff device here

3Rotate clockwise to increase pressure

 

Shown in closed or spray position

3

4

 

5

Fill 1/3 full with TSL

￿ 28

 

2

2.Fill the wet–cup (102). Pry off the wet-cup seal. Fill the cup 1/3 full with Graco Throat Seal Liquid (TSL), supplied. Install the wet-cup seal.

3.Plug in the sprayer. Be sure the ON/OFF switch

(52)is OFF. Plug the cord into a grounded outlet at least 20 feet away from the spray area.

WARNING

FIRE AND EXPLOSION HAZARD Proper electrical grounding is essential to reduce the risk of fire or explosion which can result in serious injury and property damage. Also read FIRE OR EXPLOSION HAZARD on page 2.

4.Flush the pump to remove the lightweight oil which was left in to protect pump parts after fac- tory testing. See page 13.

5.Prepare the paint according to the manufactu- ers’s recommendations. Remove any paint skin. Strain the paint through a fine nylon mesh bag (available at most paint dealers) to remove par- ticles that could clog the spray tip. This is an im- portant step toward trouble-free paint spraying.

32

33

64

74

 

52

 

 

4

 

67

102

5

 

 

￿6￿97

Fig. 2

6￿ 3￿￿￿54￿

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Contents Rev. D Supercedes Rev. C Model 231-353, Series aTable of Contents SymbolsInjection Hazard Equipment Misuse Hazard Major Components Setup How to use the pressure control How to Use the Gun Trigger SafetyHow to use the pressure drain valve OperationHow to use the RAC IV tip guard How to remove a tip clogPressure Relief Procedure Startup ProcedureStartup Fire and Explosion Hazard 102 Shutdown and Care Shutdown and CareWhen to Flush How to FlushFlushing Troubleshooting Basic Problem SolvingIntermediate Problem Solving If pump consistently comes to rest with Use AC power or a different generator Setup Motor TestArmature Short Circuit Test General Repair Information Tool ListMotor Brushes Test the brushes Displacement Pump Repair Removing the pump See FigIntake valve repair See Fig Disassembling the pump See FigReassembling the pump 110 108 107 116 Motor Power Supply Cord On/Off SwitchMotor Start Board Drive Housing, Connecting Rod, Crankshaft REF a Pressure Control Pressure Transducer Inlet Strainer Installation/Removal Drain ValveModel 236-787, Series a Displacement Pump Parts Drawing and ListAccessories Fluid Filter Kit Low Profile Cart KitSprayer Parts Drawing Model 231-353, Series aSprayer Parts List Motor KITGraco Warranty and Disclaimers Technical DataDimensions Graco Phone Numbers

390sts, 231-353, 308-548 specifications

Graco Inc. has established itself as a leader in fluid handling equipment, and the Graco 308-548, 231-353, and 390STS models exemplify this commitment to innovation, efficiency, and reliability. These models are designed for high-performance applications in various industries, including automotive, construction, and manufacturing.

The Graco 308-548 is engineered with a powerful motor and advanced pump technology, providing user-friendly operation and outstanding reliability. Its design allows for easy maintenance, minimizing downtime and increasing productivity. The adjustable pressure setting ensures optimal performance for different materials, making it a versatile choice for spray applications. Its lightweight construction and portability enhance usability, allowing operators to move the unit with ease.

On the other hand, the Graco 231-353 model is known for its advanced airless technology, which enables users to achieve a smooth and even finish without the need for thinning. This model is equipped with an efficient pump that delivers consistent material flow, ensuring high-quality results in every application. A notable feature of the 231-353 is its ability to handle a wide range of coatings, including paints, stains, and sealers, making it ideal for both interior and exterior projects.

The Graco 390STS stands out in this lineup with its robust design and powerful performance, suitable for larger scale projects. It incorporates SmartControl technology, which provides precise pressure control and consistent spray patterns, contributing to an efficient work process. The ergonomic design emphasizes operator comfort, reducing fatigue during extended use. Additionally, the 390STS supports a variety of spray tips, allowing for customization based on specific job requirements, further enhancing its versatility.

All three Graco models feature durable construction, capable of withstanding rigorous job site demands. They are built with high-quality materials that resist corrosion and wear, ensuring longevity and reducing the total cost of ownership. The ease of use and intuitive controls minimize the learning curve for new users, making these models accessible to both professionals and DIY enthusiasts alike.

In conclusion, Graco Inc. continues to push the boundaries of fluid handling technology with the 308-548, 231-353, and 390STS models. Their powerful performance, advanced features, and user-friendly designs make them standout choices for anyone in need of reliable spray equipment.
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