Graco Inc 390sts, 308-548, 231-353 manual Shutdown and Care

Page 12

Shutdown and Care

WARNING

INJECTION HAZARD

To reduce the risk of serious injury, whenever you are instructed to relieve pressure, follow the Pressure Relief

Procedure on page 9.

Shutdown and Care

1.Check the packing nut/wet-cup daily (102). Re- lieve pressure first. Keep the wet-cup 1/3 full of TSL at all times to help prevent fluid buildup on the piston rod and premature wear of packings.

2.Tighten the packing nut/wet-cup (102) just enough to stop leakage. Over-tightening causes binding and excessive packing wear. Use a round punch or brass rod and a light hammer to adjust the nut. See Fig.10.

3.Periodically clean paint residue from the pres- sure transducer (29) vent hole area. See Fig. 11. Replace the transducer when leakage is exces- sive. See page 31.

4.Lubricate the bearing housing after every 100 hours of operation. Remove the front cover. Fill the bearing housing cavity (A) with SAE 10 non- detergent oil. See Fig. 11.

5.Flush the sprayer at the end of each work day and fill it with mineral spirits to help prevent pump corrosion and freezing. See page 13.

CAUTION

To prevent pump corrosion, and to reduce the chance of fluid freezing in the pump in cold weather, never leave water or any type of paint in the sprayer when it is not in use. Freezing can seriously dam- age the sprayer or result in a loss of pressure or stalling.

6.For very short shutoff periods, leave the suction tube in the paint, relieve pressure, and clean the spray tip.

7.Coil the hose and hang it on a hose rack when storing it, even for overnight, to help protect the hose from kinking, abrasion, coupling damage, etc.

WARNING

INJECTION HAZARD

See the warning section INJECTION HAZARD on page 3 for information on the hazard of using damaged hoses.

￿Turn packing nut clockwise to tighten

￿ 102

Fig. 10

￿465￿

￿Vent hole

29

￿

A

Fig. 11

￿465￿

12￿ 3￿8￿548

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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 Gun Trigger Safety How to use the pressure drain valveHow to use the pressure control 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 ValveDisplacement Pump Parts Drawing and List AccessoriesModel 236-787, Series a Fluid Filter Kit Low Profile Cart KitSprayer Parts Drawing Model 231-353, Series aSprayer Parts List Motor KITTechnical Data DimensionsGraco Warranty and Disclaimers 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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