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

Page 26

Motor

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.

NOTE: See Fig. 26 except where noted.

1.

Relieve pressure.

2.

Try to stop the pump with the piston rod (107) in its

 

lowest position. To lower the piston rod manually,

 

rotate the motor fan blades. Use a screwdriver to

 

push the retaining spring (18) up and push out the

 

pin (17). See Fig. 24.

3.

Remove the screws (56) and lower the junction

 

box (59). Disconnect the motor wires and the pres-

 

sure control wire (A) from the motor start board.

 

Refer to Fig. 27 on page 27.

4.

Remove the front cover (13).

5.

Turn the displacement pump rod (107) so the pin

 

hole aligns with the bottom drive housing screw

 

(19). See Fig. 25. Remove the three drive housing

 

screws and lockwashers (19,6). Also see Fig. 26.

6.

Remove the two motor screws (19) and and re-

 

move the sprayer handle (24).

8.Remove the two screws (46) and lift the motor off the base (66).

9.Align the new motor with the base and reinstall the screws (46).

10.Assemble the drive housing to the motor. Follow steps 8 to 11 on page 28.

11.Connect the wires in the junction box. Refer to Fig. 27 on page 27. Install the junction box.

12.Connect the piston rod (107) to the drive housing; see page 22, Installing the Pump, Step 2 and the WARNING following it.

17

15

18

Fig. 24

01068

 

107

19,6

 

 

 

 

 

01074

 

 

 

 

 

Fig. 25

 

 

 

 

7. Tap the lower rear of the drive housing (11) with a

plastic mallet to loosen the motor. Pull the drive

housing straight off the motor while guiding the

harness (A) from the motor. Do not allow the gear

(16) to fall. Read the CAUTION on page 28.

11

￿

Torque to 80 in–lb (9 N.m)

6

2

Quantity of three

￿ 19

3 Quantity of one

13

3 31

34 2

Fig. 26

16

12

￿19 24

B C A

4

59 46

56

￿4656

￿6￿ ￿￿8￿￿￿8

Page 25 Page 27
Image 26
Page 25 Page 27
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 clogStartup Pressure Relief ProcedureStartup Procedure Fire and Explosion Hazard 102 Shutdown and Care Shutdown and CareFlushing When to FlushHow to Flush Troubleshooting Basic Problem SolvingIntermediate Problem Solving If pump consistently comes to rest with Use AC power or a different generator Armature Short Circuit Test SetupMotor Test General Repair Information Tool ListMotor Brushes Test the brushes Displacement Pump Repair Removing the pump See FigReassembling the pump Intake valve repair See FigDisassembling the pump See Fig 110 108 107 116 Motor Motor Start Board Power Supply CordOn/Off Switch 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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