Graco 20B425 Manual
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Graco 20B425 Manual

Graco 20B425 Manual

Potentiometer replacement kit
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Installation, Kit
Potentiometer Replacement
Kit
For replacement of the potentiometer in XT sprayers. For professional use only. Not
approved for use in explosive atmospheres or hazardous (classified) locations.
Models: 20B425
Important Safety Instructions
Read all warnings and instructions in this
manual and the sprayer manual before
using the equipment. Be familiar with the
proper control and usage of the
equipment. Save these instructions.
Related Manuals
Find English manuals and any available translations at
www.graco.com.
English Manual
Description
Number
3A9095
Sprayer Operation Manual
3B0148A
EN

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Summary of Contents for Graco 20B425

  • Page 1 3B0148A For replacement of the potentiometer in XT sprayers. For professional use only. Not approved for use in explosive atmospheres or hazardous (classified) locations. Models: 20B425 Important Safety Instructions Read all warnings and instructions in this manual and the sprayer manual before using the equipment.

  • Page 2: Table Of Contents

    California Proposition 65 ....11 Graco Standard Warranty ....12...

  • Page 3: Symbols

    Symbols Symbols The following safety symbols appear throughout this manual and on warning labels. Read the table below to understand what each symbol means. Symbol Meaning Electric Shock Hazard Moving Parts Hazard Ground Equipment Follow Pressure Relief Procedure Read Manual Wear Personal Protective Equipment Safety Alert Symbol...

  • Page 4: General Warnings

    General Warnings General Warnings The following warnings apply throughout this manual. Read, understand, and follow the warnings before using this equipment. Failure to follow these warnings can result in serious injury. WARNING ELECTRIC SHOCK HAZARD This equipment must be grounded. Improper grounding, setup, or usage of the system can cause electric shock.

  • Page 5: Installation

    Installation Installation 5. Remove two screws (34) using a T20 torx tool. Remove top cover (39). Keep clear of electrical and moving parts during repair procedure. To avoid electrical shock hazards, wait five minutes after disconnecting power cord for stored electricity to dissipate before starting repair procedure.
  • Page 6 Installation 6. Remove three screws (34) using a T20 torx tool. 7. Slide the display connector up out of the side Remove side shroud assembly (29). shroud assembly (29) and disconnect the potentiometer cable connector. 8. Remove potentiometer knob by backing out the two remaining set screws (62) with a 5/64 in.
  • Page 7 Installation 9. Using a 1/2 in. socket, remove potentiometer (60) by unscrewing retaining nut (60) from the side shroud (42). 3B0148A...

  • Page 8: Assembly

    Installation Assembly 4. Slide the display connector back into the side shroud assembly (29). Keep clear of electrical and moving parts during repair procedure. To avoid electrical shock hazards, wait five minutes after disconnecting power cord for stored electricity to dissipate before starting repair procedure.
  • Page 9 Installation 6. Rotate potentiometer shaft clockwise until it stops, 8. Install display (45) with two screws (34) and torque then assemble gasket and knob with indicator to 12-16 in-lbs (1.3-1.8 N•m). pointed straight down (TurboClean position). Apply downward force to knob and tighten both set screws to create light drag on gasket.

  • Page 10: Knob Calibration

    Installation Knob Calibration NOTE: Knob calibration should be performed whenever the potentiometer is replaced. 1. To perform knob calibration, enter secondary menu by holding menu button while powering sprayer. 2. Use menu button to navigate to knob calibration screen. 3. Set potentiometer to max spray position, just before TurboClean.

  • Page 11: California Proposition 65

    Installation California Proposition 65 CALIFORNIA RESIDENTS WARNING: Cancer and reproductive harm – www.P65warnings.ca.gov. 3B0148A...

  • Page 12: Graco Standard Warranty

    With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.

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