Graco Power-Star 236754 Instructions Manual
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Graco Power-Star 236754 Instructions Manual

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Instructions - Parts List
Power-Star
Used to pump high volumes of petroleum and synthetic based oils. For professional use
only.
Model No. 236754, Series A
1:1 Ration Universal Pump and Reciprocator
Model No. 236752, Series A
Reciprocator Only
1500 psi (10 MPa, 103 bar) Maximum Hydraulic Input Pressure
1500 psi (10 MPa, 103 bar) Maximum Fluid Outlet Pressure
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
This pump is designed to be used only in pumping
non-corrosive and non-abrasive oils and lubricants.
Any other use of the system can cause unsafe
operating conditions and result in components
rupture, fire, or explosion which can cause serious
injury, including fluid injection.
™
308391K
EN

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Summary of Contents for Graco Power-Star 236754

  • Page 1 Instructions - Parts List ™ Power-Star 308391K Used to pump high volumes of petroleum and synthetic based oils. For professional use only. Model No. 236754, Series A 1:1 Ration Universal Pump and Reciprocator Model No. 236752, Series A Reciprocator Only 1500 psi (10 MPa, 103 bar) Maximum Hydraulic Input Pressure 1500 psi (10 MPa, 103 bar) Maximum Fluid Outlet Pressure Important Safety Instructions...

  • Page 2: Table Of Contents

    Technical Data ......19 Graco Standard Warranty ....20...

  • Page 3: Warnings

    Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama- tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
  • Page 4 Warnings WARNING 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 system com- ponent.

  • Page 5: Installation

    Installation Installation Grounding Maximum Working Pressure of Accessories To reduce the risk of serious injury including fluid injection and splashing in the eyes or on the skin, The equipment must be grounded to reduce the risk which may be caused by component ruptures, all of static sparking and electric shock.

  • Page 6: Hydraulic Power Supply

    Pressure Reducing Valve Flow Control Valve Always plug the hydraulic inlets, outlets, and lines when Hydraulic Supply Line (Use only Graco Hydraulic power supply) disconnecting them to avoid introducing dirt and other Dispensed Material Supply Suction Hose Kit contaminants to the system.

  • Page 7: Hydraulic Components

    Installation Hydraulic Components Hydraulic Fluid Control: The hydraulic fluid control pro- vides pressure regulator, and pump isolation. (F . 2) Pressure Regulation: The hydraulic fluid control reduces the hydraulic oil pressure to the operating pressure required for the application. Always turn off the hydraulic supply side valve (K) first to avoid possible serious injury or component Flow Regulation: The hydraulic fluid control limits the damage.

  • Page 8: Operation

    Follow the Pressure Relief Procedure whenever you see this symbol. Recommended Hydraulic Oil Use a Graco-approved Hydraulic Oil or a premium, ISO This equipment stays pressurized until pressure is grade 46 petroleum-based hydraulic oil containing rust manually relieved. To help prevent serious injury from and oxidation inhibitors and anti-wear agents.

  • Page 9: Shutdown And Care

    Operation 5. Never allow a pump to run dry of the fluid being pumped. A dry pump quickly speeds up and can damage itself. If it speeds up, shut off the power supply to the reciprocator immediately. Refill the supply container and prime the pump to eliminate air.

  • Page 10: Troubleshooting

    Troubleshooting Troubleshooting 1. Follow Pressure Relief Procedure, page 8, before checking or repairing gun. 2. Check all possible problems and causes before dis- assembling gun. Problem Cause Solution Closed dispense valve Pump only runs with valve open. Increase supply pressure using the Pressure too low pressure adjusting valve.

  • Page 11: Repair

    Repair Repair Refer to Parts Drawing on page 15 unless otherwise 3. Place the hydraulic motor horizontally in a bench vise at the pump adapter (42) and bottom cylinder specified. cap (43). 4. Remove the displacement pump with a strap wrench.

  • Page 12: Reassembly

    Repair Reassembly NOTICE With the bolts removed, the assembly may separate Refer to F . 4 for the following instructions. at the joints between the cylinder (35) and the upper housing (36) and bottom cylinder cap (43), 1. Place the pump adapter (42) in a vise. Grease the new seal (17) from the repair kit.

  • Page 13: Intake Valve

    Repair NOTICE To avoid damaging the internal parts, install detent parts (31, 21, 29, 30, and 7) after install the end cap (40). 13. Install one detent assembly; retaining plug (31), spring (21), gasket (29), ball guide (30), and ball (7). Repeat for the other detent assembly.

  • Page 14: Displacement Pump

    Repair Displacement Pump Refer to F . 5 for the following instructions. NOTE: Clean and inspect all parts for wear of damage as you disassemble them. Replace parts as needed. For the best results, always replace all the o-rings and pack- ings when you disassemble the pump.

  • Page 15: Notes

    Parts Parts See the repair section for important torque and lubrication notes Rings must be positioned with joints opposed 180 Torque to 70–80 ft–lb (95–108 N.m) Torque to 120–130 ft–lb (163–176 N.m) Lips face up Lips face down 308391K...

  • Page 16: Parts

    Parts Part No./Description Ref. Part Description Qty. Ref. Part Description Qty. 171411 SPRING, compression 100127 NUT, mscr, hex, 5/8-11 unc-2B 171412 CYLINDER LOCKWASHER, spring, 5/8” 172814 HOUSING, upper 101701 BALL, 1/4 inch dia 181243 STOP, piston 101754 PLUG, pipe, 3/8 npt(f) 181874 SPOOL, valve CAPSCREW, soc hd, 5/16-18 x 1 183252 PLUG, stop...
  • Page 17 Parts Ref. Part Description Qty. Ref. Part Description Qty. 189707 PISTON, fluid 236752 RECIPROCATOR, hydra, 189708 CYLINDER, pump Power-Star 189709 VALVE, housing 101178 BALL, metallic 189710 RETAINER, ball 108001 BALL, metallic, sst 189711 WASHER, piston 105† PACKING, o-ring 107† SEAL, block vee †...
  • Page 18 Technical Data Technical Data ™ Power-Star Metric Fluid Ratio Maximum Output Flow 12.0 gpm 45.4 lpm Maximum Output Pressure 1500 psi 10.3 MPa, 103 bar Maximum Input Flow 45.4 lpm 12.0 gpm Maximum Hydraulic Fluid Input Pressure 1500 psi 10.3 MPa, 103 bar Maximum Input Fluid Temperature 130°F 55°C...

  • Page 19: Technical Data

    Technical Data Performance Chart 308391K...

  • Page 20: 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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Power-star 236752

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