Graco 257100 Operation
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Graco 257100 Operation

Graco 257100 Operation

Drywall feed pump
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Operation
Drywall Feed Pump
Read all warnings and instructions
Maximum Working Pressure 2500 psi (17.2 MPa, 172 bar)
Model: 257100
- For Water-Based Materials Only -
3A0245A
ti14873a

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Summary of Contents for Graco 257100

  • Page 1 Operation 3A0245A Drywall Feed Pump - For Water-Based Materials Only - Read all warnings and instructions Maximum Working Pressure 2500 psi (17.2 MPa, 172 bar) Model: 257100 ti14873a...
  • Page 2 Check equipment daily. Repair or replace worn or damaged parts immediately. • Do not alter or modify equipment. • Use equipment only for its intended purpose. Call your Graco distributor for information. • Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces. •...
  • Page 3 Warning WARNING MOVING PARTS HAZARD Moving parts can pinch or amputate fingers and other body parts. • Keep clear of moving parts. • Do not operate equipment with protective guards or covers removed. • Pressurized equipment can start without warning. Before checking, moving, or servicing equipment, follow the Pressure Relief Procedure in this manual.

  • Page 4: Component Identification

    Component Identification Component Identification ti14874a Pump Module Prime/Tool Fill/Recirculation Valve Flow Knob 15/20 Amp Switch ON/OFF Switch Material Hoses Pump Pump Inlet Cover Hopper Plug Hopper Pump Connector 3A0245A...

  • Page 5: Finishing Tools

    Finishing Tools Finishing Tools Corner Finisher 2. Place flat box at end of joint. 3. Lead with handle and draw the tool along the joint. 4. Near middle of the joint, remove flat box from joint surface with a sweeping motion. 5.

  • Page 6: Pressure Relief Procedure

    Pressure Relief Procedure 3. Insert cotter pin. 6. Lead with head of taper to make tracking easier. Large trigger feeds material through tool. Small trigger retracts creasing wheel. 7. Roll tape over seam with only one wheel in contact with wall until approximately three inches from end of seam.

  • Page 7: Operation

    Changes or modifications not expressly approved by This unit performs differently depending on which valve Graco, Inc. could void the user's authority to operate this is being used. Each time you change valves, perform equipment. the following steps so the unit can “Learn” the valve.
  • Page 8 Operation Startup Pump Material NOTICE Do not use with quick-set materials. They can harden inside the unit and hose. 1. Mix material in separate bucket. Gradually add 7. Place head of tool over waster bucket and trigger water and mix until desired consistency is achieved. valve until material flows from tool head.
  • Page 9 Operation 5. Turn flow control knob fully clockwise until box is filled with material. 6. Turn flow control knob fully counter-clockwise. Fill Taper 1. Install taper-fill adapter. 3. Turn Prime Valve to TOOL FILL position. 4. Turn control knob fully clockwise. 5.

  • Page 10: Bleed System Pressure

    Operation Bleed System Pressure Install Prime Valve 1. Tighten prime valve into manifold (use thread seal- ant on housing threads). Torque to 190 to 210 in-lb. 2. Install prime valve base. Pin in base must align with 1. Turn flow knob to fully counterclockwise. hole in manifold.

  • Page 11: Storage - Less Than 24 Hours

    Cleanup Cleanup 2. Hang drain line mount onto material bucket. Turn pump to drain position and pump unused material from hopper and hose. NOTICE ti11801a Do not use with quick-set materials. They can harden inside the unit and hose. ti8794a Storage - Less Than 24 Hours 3.
  • Page 12 Cleanup 7. Remove drain plug from hopper. Flush with water. 11. Add additional water and repeat steps 13 - 14, Clean and install drain plug. if necessary. ti11670a 12. Remove drain plug from hopper. Flush with water. Clean and install drain plug. 13.

  • Page 13: Troubleshooting

    Cleanup Troubleshooting Motor Won’t Operate PROBLEM CAUSE SOLUTION Basic Fluid Pressure Problems Pressure control knob setting. Motor will not Slowly increase pressure setting to see run if at minimum setting (fully counterclock- if motor starts. wise). Spray tip or fluid filter may be clogged. Relieve pressure and clear clog or clean filter;...
  • Page 14 Cleanup Motor is Hot and Runs Intermittently PROBLEM CAUSE SOLUTION Motor is hot and runs intermittently. Determine if sprayer was operated at Decrease pressure setting or increase high pressure with small tips, which tip size. causes low motor RPM and excessive heat build up Be sure ambient temperature where Move sprayer to shaded, cooler area if...
  • Page 15 Cleanup Troubleshooting Low or Fluctuating Output PROBLEM CAUSE SOLUTION Motor runs and pump strokes 1. Material supply. 1. Refill hopper and re-prime pump. 2. Loose fittings. 2. Tighten; use thread sealant or sealing tape on threads if neces- sary. 3. Intake valve ball and piston ball are 3.
  • Page 16 Cleanup PROBLEM CAUSE SOLUTION Building circuit breaker opens 1. Basic Electrical Problems on page 13. 1. Perform necessary procedures. as soon as sprayer is plugged 2. For damaged or pinched wires in pres- 2. Replace damaged parts. into outlet and sprayer is NOT sure turned on.

  • Page 17: Wiring Diagram

    Wiring Diagram Wiring Diagram Thermal Switch Digital Display Potentiometer Motor Pressure Transducer Black Motor Leads Motor Sensor Leads 20A 15A 1595 Switch ti114889a green/ground ON/OFF Switch Black white Black + Power Plug green/ground Technical Data Power requirements 15A/20A Motor HP (W) 2.5 (1864) Maximum fluid working pressure 2500 psi (17.2 MPa, 172 bar)

  • Page 18: Warranty

    Graco distributor to the original purchaser for use. 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.
  • Page 19 TO PLACE AN ORDER, contact your Graco distributor, or call 1-800-690-2894 to identify the nearest distributor. All written and visual data contained in this document reflects the latest product information available at the time of publication. Graco reserves the right to make changes at any time without notice.

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