Graco Husky 3250 Repair Parts
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Graco Husky 3250 Repair Parts

Graco Husky 3250 Repair Parts

Air-operated diaphragm pump
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Repair/Parts
Husky™ 3250 Air-Operated
Diaphragm Pump
SST and aluminum pumps for fluid transfer applications, including high viscosity
materials. For professional use only.
Not approved for use in European explosive atmosphere locations.
Important Safety Instructions
Read all warnings and instructions in this manual and
in any related manual before using the equipment.
Save these instructions.
3A7662C
EN

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Summary of Contents for Graco Husky 3250

  • Page 1 Repair/Parts Husky™ 3250 Air-Operated Diaphragm Pump 3A7662C SST and aluminum pumps for fluid transfer applications, including high viscosity materials. For professional use only. Not approved for use in European explosive atmosphere locations. Important Safety Instructions Read all warnings and instructions in this manual and in any related manual before using the equipment.

  • Page 2: Table Of Contents

    Troubleshooting..........9 Repair..............11 Technical Specifications........35 Pressure Relief Procedure......11 Notes..............37 Replace Complete Air Valve ......13 Replace Seals or Rebuild Air Valve ....14 Graco Standard Husky Pump Warranty....38 Related Related Related Manuals Manuals Manuals Manual...

  • Page 3: Safety Symbols

    Safety Symbols Safety Symbols Symbols Safety Safety Symbols The following safety symbols appear throughout this manual and on warning labels. Read the table below to understand what each symbol means. Symbol Symbol Symbol Meaning Meaning Meaning Symbol Symbol Symbol Meaning Meaning Meaning Burn Hazard...

  • Page 4: Related Manuals

    Warnings Warnings Warnings 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 WARNING WARNING FIRE FIRE FIRE AND AND EXPLOSION EXPLOSION HAZARD EXPLOSION HAZARD...

  • Page 5: Warnings

    Warnings WARNING WARNING WARNING EQUIPMENT MISUSE MISUSE HAZARD HAZARD EQUIPMENT EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury. • Do not operate the unit when fatigued or under the influence of drugs or alcohol. • Do not exceed the maximum working pressure or temperature rating of the lowest rated Technical Specifications Specifications in all equipment manuals.
  • Page 6 Warnings WARNING WARNING WARNING PLASTIC PARTS PARTS CLEANING CLEANING SOLVENT SOLVENT HAZARD HAZARD PLASTIC PLASTIC PARTS CLEANING SOLVENT HAZARD Many cleaning solvents can degrade plastic parts and cause them to fail, which could cause serious injury or property damage. • Use only compatible solvents to clean plastic structural or pressure-containing parts. Technical Specifications Specifications in all equipment manuals for materials of construction.

  • Page 7: Configuration Number Matrix

    Configuration Number Matrix Configuration Number Number Matrix Matrix Configuration Configuration Number Matrix For the Configuration Number of your pump, see the identification plate (ID) on top of the center section. Use the following tables to determine the pump components. 3250S–PP01AS1PPPTPSPT 3250S–PP01AS1PPPTPSPT 3250S–PP01AS1PPPTPSPT Sample...
  • Page 8 Configuration Number Matrix Seat Seat Seat Material Material Material Ball Ball Ball Material Material Material Diaphragm Diaphragm Material Diaphragm Material Material Manifold Manifold and Manifold and Seat Seat Seat Seal Material Material Seal Seal Material Polypropylene ■ PTFE ■ ■ Santoprene PTFE PTFE/EPDM Overmolded ■...

  • Page 9: Troubleshooting

    Troubleshooting Troubleshooting Troubleshooting Troubleshooting Follow Pressure Relief Procedure, page 11, before checking or repairing the equipment. NOTE: Check all possible problems and causes before disassembling the equipment. Problem Cause Solution Problem Problem Cause Cause Solution Solution Pump cycles but will not prime. Pump is running too fast, causing Reduce air inlet pressure.
  • Page 10 Troubleshooting Problem Cause Solution Problem Problem Cause Cause Solution Solution Air bubbles in fluid. Suction line is loose. Tighten. Replace. Diaphragm (or backup) ruptured. Loose manifolds, damaged seats or Tighten manifold bolts or replace o-rings. seats or o-rings. Pump cavitation. Reduce pump speed or suction lift.

  • Page 11: Repair

    Repair Repair Repair Repair Pressure Relief Relief Procedure Procedure Pressure Pressure Relief Procedure See Fig. 1, Typical Installation, page 12, for location of referenced parts. Follow the Pressure Relief Procedure 1. Close the bleed-type master air valve (B) to shut whenever you see this symbol.
  • Page 12 Repair Figure 1 Typical Installation Accessories/Components Accessories/Components Not Accessories/Components Not Supplied Supplied Supplied System System System Components Components Components Air supply line Air inlet port (not visible) Bleed-type master air valve (may be Air exhaust port and muffler required for your pump) Fluid inlet port Air filter/regulator assembly Master air valve (to isolate the...

  • Page 13: Air Valve

    Repair Replace Complete Complete Air Air Valve Valve Replace Replace Complete Valve Follow these instructions to install the Air Valve Replacement Kit. See page 27. To avoid severe burns, do not touch hot fluid or hot equipment. 1. Follow the Pressure Relief Procedure, page 2.

  • Page 14: Replace Complete Air Valve

    Replace Seals or Rebuild Air Valve NOTE: Apply lithium-based grease when instructed to grease. Order Graco PN 111920. Follow these instructions to service the air valve with one of the available repair kits. Air Valve Seal 1. Use all parts in the repair kits. Clean other Kit parts are marked with a †.
  • Page 15 Repair 7. Grease and install the detent assembly (203) 9. Grease the cup side and install the valve plate into the piston. (205♦). Align the small hole in the plate with the air inlet. Tighten the screws (209♦†) to 8. Install the o-ring (214♦) on the cup (213♦). hold it in place.
  • Page 16 Repair Check Valve Valve Repair Repair Check Check Valve Repair must seat on the chamfered side of the seat. The arrows (A) on the fluid covers (2) must must must point toward the outlet manifold (3). To avoid severe burns, do not touch hot fluid or hot equipment.
  • Page 17 Repair Diaphragm and and Center Center Section Section Repair Repair Diaphragm Diaphragm Center Section Repair 3. Overmolded Overmolded Overmolded Diaphragms Diaphragms ( ( ( Diaphragms PO and and CO models) models) models) a. Orient the pump so one of the fluid covers (2) faces up.
  • Page 18 Repair Reassemble Reassemble Reassemble the the Diaphragm Diaphragm and Diaphragm and Center Center Center All Other Other Diaphragms Diaphragms 7. All Other Diaphragms Section Section Section a. Assemble the diaphragm (12), the backup diaphragm (13, if present), the air side Follow all notes in the illustration.
  • Page 19 Repair GE, TP, TP, SP, SP, BN, BN, CR, CR, and and FK FK Models Models PO and and CO CO Models Models Models Models PS Models Models Models Rounded side faces diaphragm Apply lithium based grease. Apply primer and medium-strength (blue) thread locker.

  • Page 20: Check Valve Repair

    Repair 8. To ensure proper seating and extend diaphragm life, apply air pressure to the pump prior to attaching the second fluid cover. a. Place the supplied tool (302) where the air valve gasket (105) normally goes. Arrows (A) must face toward the fluid cover that is already attached.

  • Page 21: Torque Instructions

    Torque Instructions Torque Instructions Instructions Torque Torque Instructions If fluid cover or manifold fasteners have been Inlet Inlet Inlet and and Outlet Outlet Outlet Manifold Manifold Manifold fasteners fasteners fasteners loosened, it is important to torque them using the following procedure to improve sealing. NOTE: Fluid cover and manifold fasteners have a NOTE: NOTE:...

  • Page 22: Parts

    Parts Parts Parts Parts ti00827a 3A7662C...
  • Page 23 Parts Parts/Kits Quick Quick Reference Reference Parts/Kits Parts/Kits Quick Reference Use this table as a quick reference for parts/kits. Go to the pages indicated in the table for a full description of kit contents. Ref. Ref. Ref. Part/Kit Part/Kit Part/Kit Description Description Description...

  • Page 24: Center Section

    Parts Center Section Section Center Center Section Description Description Description Description Description Description 101‡ HOUSING, center, not sold 108* SHAFT, center separately 109* CARTRIDGE, pilot receiver see page 27 VALVE, air, 110* O-RING, Buna-N SCREW, hi-lo stud 111* VALVE, pilot, assembly 104* NUT, hex, flange, serrated 112*...
  • Page 25 Parts 3250S 3250S 3250S - - - PP01AS1PPPTPSPT PP01AS1PPPTPSPT PP01AS1PPPTPSPT Sample Configuration Configuration Number: Number: Sample Sample Configuration Number: Pump Fluid Drive Center Section Fluid Covers and Seats Balls Diaphragms Manifold and Seat Size Section Type and Air Valve Manifolds Seals Material P01A...
  • Page 26 Parts Air Valve Description Description HOUSING, not sold separately 208♦† U-CUP 202♦ PISTON 209♦† SCREW, #4, thread forming 203♦ DETENT PISTON ASSEMBLY 210‡ RETAINING RING 204♦ CAM, detent 211♦ DETENT SPRING 205♦ PLATE, air valve 212♦ BASE, cup 206♦†‡ O-RING 213♦...
  • Page 27 Parts 3250S-PP01AS1PPPTPSPT Sample Configuration Number: Pump Fluid Drive Center Section Fluid Covers and Seats Balls Diaphragms Manifold and Size Section Type and Air Valve Manifolds Seat Seals Material P01A 3250 Air Valve Replacement Kit † Air Valve Seals Kit All models 2001885 All models 24K859...
  • Page 28 Parts Fluid Covers Covers and and Manifolds Manifolds Fluid Fluid Covers Manifolds 3250S - - - PP01AS1PPPTPSPT PP01AS1PPPTPSPT 3250S 3250S PP01AS1PPPTPSPT Sample Sample Sample Configuration Configuration Configuration Number: Number: Number: Pump Fluid Drive Balls Diaphragms Diaphragms Manifold Pump Pump Fluid Fluid Drive Drive...
  • Page 29 Parts Seats and and Check Check Balls Balls Seats Seats Check Balls 3250S - - - PP01AS1PPPTPSPT PP01AS1PPPTPSPT 3250S 3250S PP01AS1PPPTPSPT Sample Sample Sample Configuration Configuration Configuration Number: Number: Number: Pump Fluid Drive Balls Diaphragms Diaphragms Manifold Pump Pump Fluid Fluid Drive Drive...
  • Page 30 Parts Diaphragms Diaphragms Diaphragms 3250S 3250S 3250S - - - PP01AS1PPPTPSPT PP01AS1PPPTPSPT PP01AS1PPPTPSPT Sample Configuration Configuration Number: Number: Sample Sample Configuration Number: Pump Fluid Drive Center Section Section Fluid Covers Covers and Seats Balls Diaphragms Diaphragms Manifold Manifold and and Seat Seat Pump Pump...
  • Page 31 Parts Two- - - Piece Piece Diaphragm Diaphragm Kit Fluid Plate Plate Kit Piece Diaphragm Fluid Fluid Plate 24V244 S1, S2 2001909 A1, A2 2001910 Kits include: • 2 diaphragms (12), PTFE Kits include: • 2 backup diaphragms (13), Santoprene •...
  • Page 32 Parts Seats, Check Check Balls, Balls, and and Diaphragm Diaphragm Kits Kits Seats, Seats, Check Balls, Diaphragm Kits 3250S - - - PP01AS1PPPTPSPT PP01AS1PPPTPSPT 3250S 3250S PP01AS1PPPTPSPT Sample Sample Sample Configuration Configuration Configuration Number: Number: Number: Pump Fluid Drive Balls Diaphragms Diaphragms Manifold Pump Pump...

  • Page 33: Manifold Seals

    Parts Manifold Seals Seals Manifold Manifold Seals 3250S 3250S - - - PP01AS1PPPTPSPT 3250S PP01AS1PPPTPSPT PP01AS1PPPTPSPT Sample Configuration Configuration Number: Number: Sample Sample Configuration Number: Pump Fluid Drive Center Section Section Fluid Covers Covers and Seats Balls Diaphragms Diaphragms Manifold Manifold and and Seat Seat...

  • Page 34: Accessories

    Accessories Accessories Accessories Accessories Muffler Muffler Muffler 111897 111897 111897 Legacy or remote exhaust muffler option. NOTE: NOTE: NOTE: See See DataTrak DataTrak DataTrak Manual Manual 313840 Manual 313840 for: 313840 for: for: • Pulse Count Conversion Kits 24B794 and 24B795 •...

  • Page 35: Technical Specifications

    Technical Specifications Technical Specifications Specifications Technical Technical Specifications Husky Husky Husky 3250 3250 Diaphragm 3250 Diaphragm Diaphragm Pump Pump Pump Metric Metric Metric Maximum fluid working pressure 125 psi 0.86 MPa, 8.6 bar Air pressure operating range 20 to 125 psi 0.14 to 0.86 MPa, 1.4 to 8.6 bar...
  • Page 36 California Proposition 65 Maximum Maximum Maximum pump pump pump speed speed speed 112 cycles per minute Standard diaphragms Overmolded diaphragms 128 cycles per minute Weight Weight Weight Stainless steel 190.0 lb 86.2 kg Aluminum 95.0 lb 43.1 kg Wetted Wetted Wetted Parts Parts Parts...

  • Page 37: Notes

    Notes Notes Notes Notes 3A7662C...
  • Page 38 Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written recommendations. This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non-Graco component parts.

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