important instructions coro
Contents
1. Page 10 PARIS DETAILS C MODEL 1 5 zer mr Ex RR EAR RR ARR RN ERR E n Page 11 PARTS DETAILS s hh rh Page 12 PARTS DETAILS DS DL MODEL sesueeeeelree essa hh hh hh Page 13 INSTALLATION TIPS e eed ne eae xb ow doe nt ed Page 14 PRINCIPLES OF THE CORKEN CORO FLO PUMP The CORKEN Coro Flo Pump is a special type of pump known as a turbine or regenerative pump The liquid flows into the inlet nozzle and into the passageway on each side of an impeller the rotating element and is recirculated constantly between the vanes or teeth of the impeller and this passageway as the impeller rotates The fluid makes a complete revolution in the pump case and is diverted out the outlet nozzle The horsepower required to drive the pump increases as the differential pressure increases but the capacity decreases at the same time Differential pressure is the difference between the pressure at the inlet of the pump and at the outlet of the pump The impeller is the only moving part and has no contact with the casing Consequently practically no wear occurs to the impeller even when pumping volatile liquids such as LP gas or ammonia which have little lubricating qualities EXCLUSIVE FEATURES OF YOUR CORKEN CORO FLO PUMP The pumping of volatile liquids is one of the most difficult of all pumping jobs Unlike other pumping operations more a2. gt gt gt Pressure Gauge with 1 4 x 2 Nipple and 1 4 90 Ell 6 CORO FLO Pumps C 10 F10 SIZE INCHES 1 1 4 1 1 4 x 4 1 1 4 1 1 4 1 1 4 1 1 4 1 4 NPT 1x3 4 3 4 3 4 3 4 FPT x 1 2 SAE Flare 3 4 x 1 2 1 2 x 10 0 1 2 1 2 MPT x 1 3 4 6 Acme Female 1 4 FPT x 1 3 4 6 Acme Male 1 4 MPT x Male POL 1 1 4 x 4 COPPER TUBING BILL OF MATERIALS C12 F12 C13 F13 SIZE INCHES 1 1 4 1 1 2 x 1 1 4 Swage 1 1 2 1 1 2 1 1 2 1 1 2 1 4 NPT 1x3 4 3 4 3 4 3 4 FPT x 5 8 SAE Flare None 3 4 x 10 0 3 4 3 4 MPT x 1 3 4 6 Acme Female 1 4 FPT x 1 3 4 6 Acme Male 1 4 MPT x Male POL 1 1 2x4 FIGURE 2 PIPING YOUR CORO FLO PUMP NOTE PIPE VALVES FITTINGS AND ELECTRICAL WIRING MUST BE IN ACCORDANCE WITH LOCAL STATE OR FEDERAL CODES STANDARDS AND REGULATIONS HAVING JURISDICTION REF NFPA 58 STANDARDS FOR THE HANDLING OF LIQUEFIED PETROLEUM GASES DESCRIPTION Excess Flow Valve Swage or Nipple LPG Shutoff Valve XH 90 Ell L P G Strainer with 1 16 Mesh Screen X H G J Union Pressure Gauge 2 1 2 Face bottom connected Concentric Steel Swage X H Tee Corken By Pass Valve with Hydrostatic Relief Tube Adapter O D Tubing Excess Flow Valve Hex Steel Bushing Single Wire Braid Hose with Male Couplings Both Ends L P G Shutoff Valve Filler Valve Coupling Adapter Cylinder Filling Connect
3. any attempt is made to repair it The trouble may lie in the piping system rather than in the pump If the pump will still produce as much differential pressure when circulating through the bypass system as it did when new you may be sure your problem is elsewhere If the pump does not produce as much pressure as it did originally remove the cover in Figure 7 8 or 9 and inspect the impeller If visual inspection indicates the impeller is in good condition remove the thin shim gasket and replace the cover Many times this procedure will adjust for slight Impeller wear If the Impeller is badly damaged it must be replaced REPLACING THE IMPELLER is a matter of removing the cover and removing the old impeller from the shaft If the old impeller is tight on the shaft threaded bolt holes are provided in the impeller to FIGURE 7 PARTS DETAILS C MODELS Socket Head Cap Screw Pan Head Screw Nameplate Pipe Plug 3 4 NPT Pipe Plug 1 4 NPT y O ring Impeller O ring Case Clearance Shim Cover use for pulling The new impeller must be a good slip fit on the shaft it should float on the shaft so it may be necessary to sand the shaft lightly to get the proper fit REPLACING THE MECHANICAL SEAL is a simple matter and replacement parts are immediately available Clear instructions are furnished with the replacement seal assembly for its installation Woodruff Key Adapter Ring
4. Case Housing Adj Shim Seal Housing Seal Assembly CORO FLO Pumps 11 FIGURE 8 PARTS DETAILS F MODELS Pan Head Screw Pipe Plug 3 4 Pipe Plug 1 4 O ring Housing Adj Shim SOC Head Screw Seal Housing Steel Grease Zerk Seal Assembly Impeller O ring Frame Ball Bearing 5 Woodruff Key Bearing Retainer Ring Ball Bearing Bearing Retainer Ring Grease Seal Bearing Cap Bearing Retainer Ring Hex Head Cap Screw 12 CORO FLO Pumps FIGURE 9 PARTS DETAILS DS DL MODELS Pan Head Screw Nameplate Pipe Plug 3 4 NPT Case Pipe Plug 1 4 NPT ie Socket Head Screw Grease Zerk O ring Housing Adj Shim Seal Housing Steel Seal Assembly Seal Pin Impeller O ring Case Clearance Shim Cover Hex Head Cap Screw Frame DS DL Bearing Retainer Ring 5 K ET Bearing S Key Shaft 5 Woodruff Key Ball Bearing Bearing Retainer Ring Grease Seal Bearing Cap Bearing Retainer Ring CORO FLO Pumps 13 INSTALLATION TIPS Use inlet line larger than pump suction nozzle Same size nozzle OK on short runs Concentric Reducer Eccentric Reducer An eccentric reducer should always be used when reducing into any pump inlet where vapor might be encountered in the pumpage The flat upper portion of t
5. IF101G IMPORTANT INSTRUCTIONS CORO FLO PUMPS C SERIES DS DL SERIES F SERIES Solutions beyond products CORKEN Warning 1 Periodic inspection and maintenance of Corken products is essential 2 Inspection maintenance and installation of Corken products must be made only by experienced trained and qualified personnel 3 Maintenance use and installation of Corken products must comply with Corken instructions applicable laws and safety standards such as NFPA Pamphlet 58 for LP Gas and ANSI K61 1 1972 for Anhydrous Ammonia 4 Transfer of toxic dangerous flammable or explosive substances using Corken products is at user s risk and equipment should be operated only by qualified personnel according to applicable laws and safety standards The Model and Serial Numbers are shown on the nameplate of the unit Record this information for future reference Model No Serial No Date Purchased Date Installed Purchased From Installed By WARNING Install use and maintain this equipment according to Corken s instructions and all applicable federal state local laws and codes Periodic inspection and maintenance is essential CORKEN ONE YEAR LIMITED WARRANTY Corken INC warrants that its products will be free from defects in material and workmanship for a period of 12 months following date of purchase from Corken Corken products which fail within the warranty period due to defects in m
6. ank bypass valve and should be set to relieve at pressure 10 to 20 psi higher than the working bypass Some built in bypass valves have the capability of being piped back to tank so check with the pump manufacturer Excess Flow Check Valve Necessary for proper vapor elimination when using priming type bypass valves Yes Always pipe bypass back to tank Make sure bypass line is large enough to handle full pump flow without excessive pressure build up Note that bypass line must be capable of bypassing full pump capacity without excessive pressure build up High pressure rise can cause bypass valve to chatter and vibrate CORO FLO Pumps 15 Solutions beyond products COHKEN P O Box 12338 Oklahoma City OK 73157 3805 N W 36th St Oklahoma City OK 73112 Phone 405 946 5576 Fax 405 948 7343 E mail corken corken com Web address www corken com Printed in U S A November 1999
7. aterial or workmanship will be repaired or replaced at Corken s option when returned freight prepaid to CORKEN INC 3805 N W 36th Street Oklahoma City Oklahoma 73112 Parts subject to wear or abuse such as mechanical seals blades piston rings and packing and other parts showing signs of abuse are not covered by this limited warranty Also equipment parts and accessories not manufactured by Corken but furnished with Corken products are not covered by this limited warranty and purchaser must look to the original manufacturer s warranty if any This limited warranty is void if the Corken product has been altered or repaired without the consent of Corken All implied warranties including any implied warranty of merchantability or expressed warranty period CORKEN DISCLAIMS ANY LIABILITY FOR CONSEQUENTIAL DAMAGES DUE TO BREACH OF ANY WRITTEN OR IMPLIED WARRANTY ON CORKEN PRODUCTS Transfer of toxic dangerous flammable or explosive substances using Corken products is at the user s risk Such substances should be handled by experienced trained personnel in compliance with governmental and industrial safety standards CONTACTING THE FACTORY Before you contact the factory note the Model Number and Serial Number of your pump The Serial Number directs us to a file containing all information on material specifications and test data applying to your specific pump When ordering parts the Corken Service Manual should be consulted for the proper Par
8. chanical seal Figure 6 DRIVER INSTALLATION THE WIRING OF YOUR ELECTRIC MOTOR is extremely important and must be done by a competent electrical contractor The wire size chart on page 6 indicates the minimum standards for wire sizes Improper motor wiring will cause you to experience expensive motor difficulties from low voltage If you suspect you have low voltage call your power company Connecting your motor for the voltage you have available is important too Be sure your motor is connected to the proper voltage Connecting to improper voltage will completely destroy your motor In explosion proof motor applications in humid climates the normal breathing and alternating temperatures of the motor warm during operation and cold when stopped will often cause moist air to be drawn into the motor housing This moist air will condense and may eventually add enough free water to the inside of the motor to cause it to fail To prevent this make a practice of running the motor and pump at least once a week on a bright dry day for an hour or so pump through the bypass system During this time the motor will heat up and vaporize the condensed moisture No motor manufacturer will guarantee his explosion proof or totally enclosed motor against damage from moisture ENGINE DRIVERS pose a special consideration The manufacturer s instructions must be followed When the CORO FLO PUMP is equipped with an engine from the factory the e
9. deal installation 3 The bypass line must rise uninterrupted to an opening in the vapor section of the storage tank The tank fitting must be either an excess flow valve or a vapor return valve it should never bea filler valve or a back check valve PUMP FOUNDATION F MODELS Every pump deserves a firm neat concrete foundation There are many ways to construct a foundation and the example in Figure 3 is only a suggestion The important features are to make the foundation level and deep enough to get below the frost line for your locality CORO FLO Pumps 5 FIGURE 1 VAPOR LINE FROM METER VAPOR ELIMINATOR OR METER BACK PRESSURE VALVE EITHER CORO FLO FRAME F MODELS OR CLOSE COUPLED C MODELS CAN BE USED 4 e RECOMMENDED DISTANCE IF DISCHARGE LINE Wade mE TE IS OVER 50 FEET cio C12 C13 C14 LONG INSTALL A F9 F10 F12 F13 F14 MOTOR FUELING CHECK VALVE 2 Excess Flow Valve BETWEEN VALVE 15 Nipple AND TEE 16 2x1 1 2 Swage Nipple 1 1 2 Shutoff Valve 1 1 2 Tee 1 1 4 Double Check Filler Valve 1 1 2 x 1 1 4 Bushing 1 1 2 Strainer with 1 16 Mesh Screen 1 1 2 Flexible Hose Connection with Male Hose Connection 1 1 2 Union 1 1 2 Nipple Swage Nipple Union Tee Shutoff Valve Swage Nipple Nipple Bushing Hydrostatic Relief Ell Corken Bypass Valve B 166 Ell Union Tee Swage Nipple Vapor Return Valve Angle Valve Nipple Swage Nipple Excess Flow Valve a e NOOR 2
10. essure gauge shows nearly the same pressure it did before you started the pump Screw the adjusting screw in until the pressure gauge indicates the pump is starting to lose discharge pressure you will know this by the rapid fluctuating of the pointer then back the adjusting screw out a turn or two until the pressure gauge again indicates a steady pressure Lock the lock nut and permit the pump to circulate liquid for a half hour or more If the motor overload protection device stops the motor during this period this indicates the bypass system valve is set too high and should be readjusted by turning the adjusting screw out until the motor will run for this period FILLING NEW CYLINDERS AND TANKS All new containers are full of air and since air will not liquefy under reasonable filling pressures it must be purged To assure relatively easy filling and the proper gas supply to burners and carburetors purging air from new containers is essential Some cylinders are difficult to fill because they are equipped with a fill tube that extends down into the liquid portion of the container If possible these cylinders should be refitted so the incoming liquid enters the vapor section of the cylinder If refitting is impossible or impractical rock the cylinder as it is being filled so that liquid will splash up into the vapor section this will help keep the cylinder filling 10 CORO FLO Pumps pressure down to a reasonable limit Don
11. he reducer prevents an accumulation of vapor that could interfere with pumping action Don t allow bypass line to Keep return line level or go have low spot pO up toward tank Low spots in bypass line can collect liquid which prevents normal vapor passage for priming purposes just like the P trap in the drain of a kitchen sink This is not a problem for bypass lines where vapor elimination is not required 14 CORO FLO Pumps INSTALLATION TIPS Always locate pump below tank level the lower the better Never locate pump above level of liquid feeding pump Product must be able to flow by gravity into pump Since liquefied gases boil when drawn into a pump by its own suction the pump must be fed by gravity flow to give stable trouble free operation Back Check Valve Positive closure of back check valve prevents proper vapor return for pump priming No p Don t pipe bypass line back into suction piping Heat Building in recirculated products causes flashing of liquid to vapor with immediate cavitation and ultimate 9 dry running This is why the bypass relief valves which are built into many positive displacement pumps should not be used for normal bypass action when handling liquefied gases The internal valve should be considered to be a back up safety relief in in addition to a back up safety relief in addition to a back to t
12. ions Your own needs may require some slight variations but they must be slight and no compromise made For more detailed piping arrangements request Engineering Data book Z400 For a discussion of pumping from underground tanks see Corken Engineering Bulletin 6 IF IT IS DESIRABLE TO ROTATE THE NOZZLES of the pump to a new position remove the four cap screws connecting the pump case Figures 7 8 9 to the motor or the frame Be careful to do this without moving the case away from the motor or frame otherwise the mechanical seal may be damaged NO PUMP CAN DISCHARGE MORE LIQUID THAN IT RECEIVES so the location and the inlet piping must be given careful attention If the inlet piping is inadequate to supply the demand of the pump you may expect trouble The inlet line sizes shown on Figures 1 and 2 are the smallest size piping you can use with success THE PUMP MUST BE LOCATED AS NEAR THE STORAGE TANK as possible The complete inlet line including the vertical line from the tank must not exceed 12 feet in length The bottom of the tank must be at least two feet above the pump inlet nozzle and four feet should be considered standard THE INLET SHOULD INCLUDE THE FOLLOWING 1 The tank excess flow valve should have a flow rate of 1 1 2 to 2 times the capacity of the pump Do not use an EVF without knowing its flow capacity 2 The tank shutoff valve should be an angle valve or a free flow type not a standard globe va
13. lve 3 Astrainer of the Y type with 1 16 mesh screen must be on the inlet line of the pump For simpler inlet lines use a Corken 1836 X1 Right Angle Strainer to replace an elbow and Y strainer 4 Aflexible connection should be used on the pump inlet or outlet to care for piping strains 5 Unions must be installed near the pump inlet and outlet nozzles 6 An eccentric swage should be used at the pump inlet nozzle to change line size flat side up 7 The inlet line must be level or slope downward to the pump 8 The minimum inlet piping sizes shown in Figures 1 and 2 must be observed THE OUTLET PIPING SHOULD INCLUDE THE FOLLOWING 1 A pressure gauge should be installed in the opening provided on the outlet nozzle or in the outlet piping near the pump This pressure gauge will tell you the complete story of the operation inside your pump Be sure you have one installed 2 Ahydrostatic relief valve is required to be installed in the outlet piping 3 Ifthe outlet piping exceeds 50 feet in length a check valve should be installed near the pump outlet 4 The minimum outlet piping sizes shown in Figures 1 and 2 must be observed THE BYPASS SYSTEM MUST INCLUDE THE FOLLOWING 1 The pump bypass system must be installed Without this system the pump has little chance of performing 2 ACORKEN B166 BYPASS VALVE a special valve to vent the pump of vapors and to act as a differential relief valve makes the i
14. ngine speed should normally not exceed 3600 rpm Excessive engine speed will overload the engine and cause early failure The engine loses 396 of its power for every 1000 feet above sea level so if your installation is at a higher altitude than normal consult the factory RECOMMENDED WIRE SIZE AWG MOTOR PHASE 115 230 APPROX FULL LOAD AMPERES LENGTH OF RUN IN FEET TO 200 8 12 115 230 6 12 115 230 P1 Should 20 0 10 0 be connected to the ungrounded line 4 10 Pump must rotate in the direction shown on pump case If not switch any two of the three incoming 3 phase lines 230 460 8 0 4 0 12 12 12 10 115 230 230 460 12 8 12 12 12 12 12 12 115V 2277 1 OR 2277 X2 SWITCH 208 230V FOR MODELS C9 C10 C12 AND C13 2277 1 OR 2277 X2 SWITCH 208 230V FOR MODEL C14 ONLY CORO FLO Pumps 9 OPERATION OF YOUR CORO FLO PUMP The following steps should be performed for the initial pumping operation 1 Close shutoff valve on the end of the delivery hose 2 Open the storage tank bottom shutoff valve 3 Open the storage tank shutoff valve of the bypass system 4 Check the motor for the proper voltage See instructions under driver installation 5 Start the pump and circulate liquid through the bypass system 6 Adjust the B166 bypass valve by turning the adjusting screw out until the pump pr
15. or with Handwheel Extension X H Nipple CORO FLO Pumps 7 ARPENTER LEVEL FORMS FOR CONCRETE ORMS TO BE LEVEL WITH EL BOTTOM OF PUMP CASE LEVEL BASE After the concrete has set check the pump base for level Drive metal shims under the base near the anchor bolts as below Tighten anchor bolts and recheck the base for level PUMP BASE 1 2 X 8 ANCHOR BOLT Figure 3 CONCRETE COUPLING ALIGNMENT F MODELS The coupling alignment must be near perfect to give quiet long life service to the pump and driver The pump and driver shafts are carefully aligned at the factory but always should be checked after the pump is installed and before the initial operation Lay a straight edge across coupling halves top and side both positions must line up to be correct If misalignment exists adjust the shims between the pump base and the foundation until exact alignment is accomplished MISALIGNED STRAIGHT EDGE COUPLING FACES NOT EVEN MISALIGNED 2 7 NOT PARALLEL 4 FEELER GAUGE ALIGNED COUPLING FACES EVEN Figure 5 AND PARALLEL BACK UP WRENCH To keep from breaking the pump nozzle or springing the pump out of alignment always use a back up wrench as shown in Figure 6 Use the proper wrench size and be sure the pipe 8 CORO FLO Pumps threads are clean and well doped with the proper thread seal for the service Avoid using excessive dope for it may enter the pump and damage the me
16. pipe thread has been located on the outlet nozzle to make the piping of the pump more simple PRESSURE GAUGE CONNECTIONS 1 4 pipe thread have been located on the outlet nozzle MOTORS on models C10 C12 C13 and C14 are explosion proof Class Group D UL and CSA listed The C10 C12 and C13 motors are all single phase 60 Hertz 50 60 Hertz on C13 only 3450 RPM 115 230 volt The C14 motor is three phase 60 Hertz 3450 RPM 230 460 bolts Corken can provide manual motor starters for models C10 C12 and C13 with a built in thermal overload protection Both motor mounted and wall mounted manual starters are available for models C10 C12 and C13 Models C11 C12 and C13 pump motors can be provided with either motor mounted or wall mounted manual motor starter with built in thermal overload protection These motors after pump serial number TS185540 are provided with a conduit seal in the 3 4 NPT rigid galvanized steel nipple fulfilling the 1996 requirement of NFPA 70 NEC paragraphs 501 5 a 1 amp 3 Separate motor starters with overload protection must be provided for the model C14 and all F series pumps INSTALLATION OF YOUR CORKEN CORO FLO PUMP THE INSTALLATION OF A CORO FLO PUMP is a simple matter However in order for the pump to deliver the performance you expect the principles discussed in this book must be followed exactly The piping details are furnished to illustrate methods proved by hundreds of installat
17. t Numbers ALWAYS INCLUDE THE MODEL NUMBER AND SERIAL NUMBER WHEN ORDERING PARTS TABLE OF CONTENTS PRINCIPLES OF THE CORKEN CORO FLO PUMP Page 4 EXCLUSIVE FEATURES OF YOUR CORKEN CORO FLO PUMP Page 4 INSTALLATION OF YOUR CORKEN CORO FLO PUMP Page 4 Inlet Piping Should Include the Page 5 Outlet Piping Should Include the Following llle Page 5 By Pass System Must Include the Page 5 Pump Foundation 5 eee eee n n n nnn Page 5 Level Base xDD Pale ele aie eel ee ae ee eae Page 8 Coupling Alignment F Models Page 8 Back Up Wrench coo TPP T Page 8 Driver Installation oaan menm kem a as Bienes UR NUR Page 8 WIRE SIZE CHART FOR WIRING OF YOUR ELECTRIC MOTOR Page 9 OPERATION OF YOUR CORO FLO PUMP Page 10 FILLING NEW CYLINDERS AND 5 ee Page 10 CARE OF YOUR CORO FLO e nre Page 10 REPAIR SERVICE ON YOUR CORO FLO PUMP
18. t blame your pump for not filling a small container A properly fitted cylinder and filling manifold or connection will permit filling with not more than 50 to 60 psi differential pressure CARE OF YOUR CORO FLO PUMP The only maintenance necessary on this pump is to lubricate the bearings about once every six months The Bearings have been lubricated at the factory for the initial operation LUBRICATION FOR MODELS C10 C12 C13 These models are equipped with lifetime lubricated bearings LUBRICATION FOR MODELS F9 F10 F12 F13 F14 F15 DS DL 9 10 12 13 14 AND 15 There are two bearings on the pump frame of these models that require lubrication In addition if the pump is driven by a motor there may be two bearings on the motor to lubricate at the same time you lubricate the pump bearings If the driver is an engine follow the engine manufacturer s instructions LUBRICATING BALL BEARING IS SIMPLE Use only Ball Bearing Grease nothing else will do Remove the plug or fitting over the bearing add a small amount of grease and run the pump and driver for several minutes with the plug removed The bearings will pump out the excess grease Replace the plug REPAIR SERVICE ON YOUR CORO FLO PUMP After a long service life repairs are limited to replacing the impeller or mechanical seal The only wearing part influencing the pumping action is the impeller so we suggest the pump be given an efficiency test before
19. ttention must be given to the design manufacture installation and operation of the pump In addition to being a pump type especially suited for handling volatile liquids your CORO FLO PUMP has a number of features which help to make it more easily operated and maintained The CORO FLO PUMPS of this series are manufactured directly connected to the electric motor or with their own frame for connection to a separate driver by means of a flexible coupling The close coupled pumps are the models C10 C12 C13 and C14 The frame pumps are available in the F and DS DL models with the following pump sizes 9 10 12 13 14 and 15 UNDERWRITERS LABORATORIES INC have tested and inspected the CORO FLO PUMPS of this series and have listed them for use in the handling of LP gas and ammonia fluids The nameplate on the pump shows the UL label DUCTILE IRON the metal with the strength of steel has been used in the manufacture of this pump for parts under pressure of the liquid 4 CORO FLO Pumps THE IMPELLER floats on a shaft and may be replaced easily without disturbing the piping or driver by simply removing the cover No special tools are needed THE MECHANICAL SEAL ASSEMBLY may be replaced easily by removing the cover and the impeller and without disturbing the piping or driver No special tools are needed THE PUMP NOZZLES MAY BE ROTATED into four different positions 90 degrees apart if desired A BYPASS CONNECTION 3 4
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