Graco Inc 308-548 Operation, How to Use the Gun Trigger Safety, How to use the pressure control

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Operation

How to Use the Gun Trigger Safety

WARNING

INJECTION HAZARD

If the gun still sprays when the gun trig- ger safety is locked, repair the gun. See manual 308–645, supplied.

1.To engage the gun trigger safety, turn the latch counterclockwise toward the handle until the detent of the latch locks on and the pin is at a right angle with the gun body. See Fig. 3.

2.To disengage the gun trigger safety, turn the latch clockwise away from the handle to unlock the detent of the latch and turn the pin 180_ from the gun body.

PIN

LATCH

ENGAGEDDISENGAGED

Fig. 3

￿5964

How to use the pressure drain valve.

Use the pressure drain valve to relieve fluid pressure from the pump and to help prime the pump. If the valve senses an over pressure condition, it opens automati- cally to relieve fluid pressure. If this happens, stop spraying immediately, shut off and unplug the sprayer. Determine the cause of the problem and correct it be- fore operating the sprayer again. Refer also to the Troubleshooting, page 14. See Fig. 4.

￿Open or drain, position

2 Closed, or spray position

￿

2

Fig. 4

04646

 

How to use the pressure control.

The pressure control controls the motor operation so the sprayer maintains constant fluid pressure at the pump outlet. Turn the pressure control knob fully coun- terclockwise to obtain the minimum setting. Turn the knob clockwise to increase pressure. See Fig. 5.

Fig. 5

01022A

3￿￿￿54￿ 7￿

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Contents Model 231-353, Series a Rev. D Supercedes Rev. CSymbols Table of ContentsInjection Hazard Equipment Misuse Hazard Major Components Setup Operation How to Use the Gun Trigger SafetyHow to use the pressure drain valve How to use the pressure controlHow to remove a tip clog How to use the RAC IV tip guardStartup Procedure Pressure Relief ProcedureStartup Fire and Explosion Hazard 102 Shutdown and Care Shutdown and CareHow to Flush When to FlushFlushing Basic Problem Solving TroubleshootingIntermediate Problem Solving If pump consistently comes to rest with Use AC power or a different generator Motor Test SetupArmature Short Circuit Test Tool List General Repair InformationMotor Brushes Test the brushes Removing the pump See Fig Displacement Pump RepairDisassembling the pump See Fig Intake valve repair See FigReassembling the pump 110 108 107 116 Motor On/Off Switch Power Supply CordMotor Start Board Drive Housing, Connecting Rod, Crankshaft REF a Pressure Control Pressure Transducer Drain Valve Inlet Strainer Installation/RemovalFluid Filter Kit Low Profile Cart Kit Displacement Pump Parts Drawing and ListAccessories Model 236-787, Series aModel 231-353, Series a Sprayer Parts DrawingMotor KIT Sprayer Parts ListGraco Phone Numbers Technical DataDimensions Graco Warranty and Disclaimers

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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