Graco Inc 390sts, 308-548, 231-353 manual Motor Start Board, Power Supply Cord, On/Off Switch

Page 27

Motor Start Board

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. 27 for this procedure.

1.Relieve pressure.

2.Remove the junction box screws (56) and lower the junction box (59).

3.Disconnect the motor wires (B) and the 3-wire con- nector (A) from the motor start board (47). Ob- serve where connections are made.

4.Remove the screws (58) and motor start board

(47). Transfer the white thermal paste from the old board to the new board.

5.Install the new motor start board. Reconnect all wires. Install the junction box. Be sure no leads are pinched against the motor or by the motor start board. Also be sure the gasket (89) is installed.

CAUTION

Be sure the flat blade of the insulated male con- nector is centered in the wrap–around blade of the female connector when the connections are made.

Route all wires carefully to avoid interference with the motor start board or junction box.

These precautions are essential to reduce the risk of a malfunction.

Power Supply Cord

NOTE: See Fig. 27 for this procedure.

1.Relieve pressure.

2.Remove the junction box screws (56) and lower the junction box (59).

3.Disconnect the power supply cord leads, including the green wire to the grounding screw (49).

4.Loosen the strain relief bushing (51). Remove the power supply cord (50).

5.Install the new cord (50) in the reverse order of disassembly.

6.Install the junction box. Be sure no leads are pinched against the motor or by the motor start board. Also be sure the gasket (89) is installed.

On/Off Switch

NOTE: See Fig. 27 for this procedure.

1.Relieve pressure.

2.Remove the junction box screws (56) and lower the junction box (59).

3.Remove the nut and rubber boot (55).

4.Disconnect the black wires from the ON/OFF switch (52) and remove the switch.

5.Place the ring terminal of the ground wire (53) over the barrel of the new switch. Install the switch so the internal tab of the anti-rotation ring (54) en- gages with the vertical groove in the threads of the switch, and the external tab engages with the blind hole (C) of the junction box.

6.Powder the inside of the rubber boot (55) with tal- cum, then shake the excess out of the boot. Install the nut and rubber boot and tighten.

7.Reconnect the ON/OFF switch black wires.

8.Install the junction box. Be sure no leads are pinched against the motor or by the motor start board. Also be sure the gasket (89) is installed.

MOTOR

 

 

GREEN

 

 

49

GREEN/

 

53 YELLOW

 

50

 

 

51

89

BLACK/

52

 

WHITE

 

 

 

BLACK

 

54 55

B

 

59

 

 

RED

 

58

C

 

A

 

56

 

 

 

47

 

 

Fig. 27

 

￿472￿

￿￿8￿￿￿8 ￿7￿

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Image 27
Page 26 Page 28
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 guardPressure Relief Procedure Startup ProcedureStartup Fire and Explosion Hazard 102 Shutdown and Care Shutdown and CareWhen to Flush How to FlushFlushing Basic Problem Solving TroubleshootingIntermediate Problem Solving If pump consistently comes to rest with Use AC power or a different generator Setup Motor TestArmature Short Circuit Test Tool List General Repair InformationMotor Brushes Test the brushes Removing the pump See Fig Displacement Pump RepairIntake 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 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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