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Gardner Denver GD-250 Operating And Service Manual

Manual is about: TRIPLEX PISTON PUMP 5" STROKE

Summary of GD-250

  • Page 1

    Gardner denver ® 3-1-618 version 1 january 2011 triplex piston pump 5” stroke model gd-250 well service operating and service manual rental pump supplied by.

  • Page 2

    3-1-618 page i maintain pump reliability and performance with genuine gardner denver ® parts and support services gardner denver ® genuine pump parts are manufactured to design tolerances and are developed for optimum dependability. Design and material innovations are the result of years of experien...

  • Page 3

    3-1-618 page ii foreword gardner denver r pumps are the result of advanced engineering and skilled manufacturing. To be assured of receiving maximum service from this machine the owner must exercise care in its operation and maintenance. This book is written to give the operator and maintenance depa...

  • Page 4

    3-1-618 page iii table of contents maintain pump reliability and performance with genuine gardner denver parts and support services ....................................................................................................... I instructions for ordering repair parts ..........................

  • Page 5

    3-1-618 page iv index bearings, main ....................................................... 13 connecting rods.................................................... 13 corrosive attack, fluid end.................................... 13 covers and guards, danger notice ......................... 2 crank...

  • Page 6

    3-1-618 page v index (continued) valve, pressure releif.............................................. 7 valve seat pulling, danger notice ........................... 2 valves, tapered seat............................................. 10 viscosity conversion table.................................... ...

  • Page 7

    3-1-618 page 1 section 1 danger notices danger read and understand the following danger notices before moving or operating the pump or any pump package unit equipment. Reciprocating pumps are machines capable of producing high fluid pressures and flow rates and are designed to be used with proper ca...

  • Page 8

    3-1-618 page 2 • fully engage the hammer bar, if one is used, to prevent it from disengaging violently from the cover as a blow is struck. • wipe their hands and the hammer handle and maintain a firm grip on the handle to avoid losing control of the hammer while swinging and striking. • carefully sw...

  • Page 9

    3-1-618 page 3 fully assembled pumps and pump package units are heavy and should only be moved using the specified lifting lugs or attachments. Many individual components have lifting eyes or lugs which must not be used to lift assemblies, as they are designed to bear the weight of the component onl...

  • Page 10

    3-1-618 page 4 relief valve must be set to relieve at a pressure equal to or below the rated capability of the lowest rated component. Before starting the pump every time, check to insure: • the pressure relief valve is in good operating condition and has been set to the proper relief pressure. • an...

  • Page 11

    3-1-618 page 5 flammable, hot, cold or corrosive fluid pumping never operate a pump which is pumping hot, cold, or corrosive fluids when any part of the pump, suction system or discharge system is leaking. Stop the pump immediately if any leakage is observed. Keep all flame, sparks, or hot objects a...

  • Page 12

    3-1-618 page 6 when operating a pressure and flow directing device, use only equipment which automatically shuts off flow when an operator releases hand or foot pressure on the pressurized flow trigger control to prevent injury if the operator is overpowered or becomes disabled. Check to insure this...

  • Page 13

    3-1-618 page 7 section 2 operating and maintenance instructions installation location - pump should be located as close to the fluid supply as possible. A short and direct suction line will improve pump performance and reduces the possibilities of cavitation. Whenever possible, adequate space should...

  • Page 14

    3-1-618 page 8 lubrication - power end - use only extreme pressure gl-5 gear oil in the crankcase. The crankcase oil capacity is 12 gallons (45.5 liters). Add oil as required to keep oil level with top of pipe elbow located on the side of the pump frame. Never use motor oils in the crankcase as they...

  • Page 15

    3-1-618 page 9 the indicated direction is recommended because crosshead load will be carried on the bottom guide, resulting in a more quiet operation, better lubrication, and longer life. Oil filter - a replaceable element oil filter is recommended. The filter element should be replaced each time th...

  • Page 16

    3-1-618 page 10 before starting a pump which has been idle for a long period of time, drain any water accumulation from crankcase by removing the drain plug and replacing when clean oil begins to flow from the drain. Add oil to proper level. It is recommended that the fluid end of pump be primed to ...

  • Page 17

    3-1-618 page 11 before installing a valve, inspect the valve seats and fluid cylinder valve deck tapers to insure they re not scratched, nicked or otherwise damaged. Replace any seat found damaged and have any damaged deck tapers re-machined. Note: do not coat the tapers with any kind of lubricant o...

  • Page 18

    3-1-618 page 12 use only gardner denver replacement plungers, as many other brands do not have the material quality or fine surface finish needed to provide long plunger and packing life. A plunger, packing and stuffing box should be installed in the pump as an assembly (see “stuffing boxes,” above)...

  • Page 19

    3-1-618 page 13 initially set the lubricator to deliver eight (8) to ten (10) drops of oil per minute to each stuffing box. More flow may be required for large plungers and/or high speeds, pressures or pumped fluid temperatures. Less flow may be needed for small plungers and/or low speeds or pressur...

  • Page 20

    3-1-618 page 14 keyed shaft splined shaft oil stop heads - oil stop head seals keep crankcase oil within frame and also help keep rod wash fluid and foreign material from entering the crankcase. Each oil stop head has two (2) lip ring seals. The seal lips should face the crankshaft. When assembling ...

  • Page 21

    3-1-618 page 15 leakage of mud and water into crankcase will be indicated by a milky appearance of crankcase oil. Rubber baffles are provided as standard equipment to reduce the amount of abrasive fluid entering power end and should be installed on all three (3) extension rods. Mud will also be seen...

  • Page 22

    3-1-618 page 16 crankcase oil requirements api-gl5 oil grade oil grade ambient temperature crankcase operating oil temperature* minimum start-up oil temperature 75w – 90 -20º f to 60º f 60º f to 140º f 20º f (-29º c to 16º c) (16º c to 60 º c) (-7º c) 80w – 140 10º f to 100º f 90º f to 180º f 50º f ...

  • Page 23

    3-1-618 page 17 gardner denver horizontal pump recommended system layout for proper performance notes: 1) feed line and bypass line openings in tank must be located below the top of baffle and on opposite side of tank from outlet opening. 2) the baffle must be completely submerged at minimum liquid ...

  • Page 24

    3-1-618 page 18 figure 1 (step 1) figure 2 (step 2).

  • Page 25

    3-1-618 page 19 figure 3 (step 3) figure 4 (step 4).

  • Page 26

    3-1-618 page 20 net positive suction head required (npshr)* at fluid cylinder suction connection with suction stabilizer and discharge pulsation dampener installed rpm pump bulletins list the maximum and minimum plunger sizes. Interpolate between npsh curves for each plunger size. *npshr is defined ...

  • Page 27

    3-1-618 page 21 correction chart for temperature or viscosity.

  • Page 28

    3-1-618 page 22 viscosity conversion table this table lists a comparison of various viscosity ratings, when the viscosity is given in terms other than saybolt universal, it can be translated by following horizontally to the saybolt column. Seconds kinematic seconds saybolt viscosity saybolt seconds ...

  • Page 29

    3-1-618 page 23 section 3 troubleshooting problem possible cause suggested action pump overloads driver. 1. Excessive pump speed 1. Reduce pump speed and/or and/or discharge pressure. Pressure. 2. Blockage or closed 2. Clean or open valve. Valve in discharge line. 3. Improper bypass conditions. 3. S...

  • Page 30

    3-1-618 page 24 problem possible cause suggested action cavitation, fluid knock or hammer 5. High fluid temperature or 5. Reduce pump speed per (continued). Viscosity. Chart in manual. 6. High fluid vapor pressure. 6. Increase npsh. 7. High acceleration head. 7. Increase supply line size. Decrease s...

  • Page 31

    3-1-618 page 25 problem possible cause suggested action knock in power end (continued). 8. Worn crankshaft. 8. Replace. 9. Worn crosshead. 9. Replace. 10. Worn main bearing. 10. Replace. 11. Valve noise transmitted to 11. See excessive valve noise power end. Problem. 12. Cavitation noise transmitted...

  • Page 32

    3-1-618 page 26 problem possible cause suggested action 3. Pump cavitating. 3. See cavitation, fluid knock or hammer problem. 4. Corrosion. 4. Treat pumped fluid. Use different materials for valves/seats. Install sacrificial anodes in suction manifold. Catastrophic failures such as 1. Pump overloade...

  • Page 33

    3-1-618 page 27 section 4 rebuilding data, running clearances and torques rebuilding data for gd-250 model pumps pump stroke 5 inches 127 mm eccentric throw diameter 10.4930 / 10.4915 266.522 / 266.484 eccentric shaft diameters: extension end (drive side) 3.875 / 3.874 98.425 / 98.400 rotary union e...

  • Page 34

    3-1-618 page 28 for additional information contact your local distributor or gardner denver - fluid transfer division, 1800 gardner expressway, quincy, illinois 62301 customer service department telephone: (800) 682-9868 fax: (217) 223-1581 for domestic parts information contact: gardner denver – fl...