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Teikoku USA | Chempump

Instruction Manual NC-Series 0620

Chempump NC-Series Pump

Problem

Probable Cause

Suggested Solution

Failure to deliver
required capacity

Pump not primed.

Reprime pump in accordance with

Section 3.2.2

Air leaks in suction piping.

Locate leaks and eliminate.

Motor not energized.

Check motor wiring. See

Section 2.3

Motor windings burnt-out or grounded.

Check electrical continuity of windings and is negative response, stator
assembly needs to be replaced.

Low suction head.

Correct suction side of system to ensure availability of design NPSH.

Discharge head too high.

Correct discharge side of system to ensure proper operating conditions.

Discharge valve closed or partially opened.

Open discharge valve until rated discharge pressure is obtained.

Impeller clogged.

Remove obstructions in impeller.

Wrong direction of rotation.

Reverse any two motor leads and check with phase sequence meter. See

Section 3.2.3

Damaged impeller

Impeller must be repaired or replaced.

Insufficient pressure

Pump not primed.

Reprime pump in accordance with

Section 3.2.2

Air leaks in suction piping.

Locate leaks and eliminate.

Motor not energized.

Check motor wiring. See

Section 2.3

Motor windings burnt-out or grounded.

Check electrical continuity of windings and is negative response, stator
assembly needs to be replaced.

Low suction head.

Correct suction side of system to ensure availability of design NPSH.

Discharge valve open too wide.

Close down discharge valve until rated discharge pressure is obtained.

Impeller clogged.

Remove obstructions in impeller.

Wrong direction of rotation.

Reverse any two motor leads

Damaged impeller

Impeller must be repaired or replaced.

Pump loses prime
after starting

Pump not properly primed at starting.

Reprime pump in accordance with

Section 3.2.2

Excessive change in suction vessel pressure. Locate source pressure fluctuations and correct as required.

Air or gas in liquid.

Locate source of gas or air entrainment and correct.

Low suction head.

Correct suction side of system to ensure availability of design NPSH.

Pump takes too much
power

Shaft bent.

Replace rotor assembly or straighten shaft if bend not too great.

Rotating element binds.

Replace bearings (see

Section 4

) as a result of excessive wear or check

for presence of foreign material in rotor chamber

Electrical short.

Check electrical continuity of all phases of the motor winding and
replace stator assembly if necessary

Pump vibrates

Foundation not sufficiently rigid.

Tighten all bolts on the pump base and base supporting structure.

Impeller partially clogged.

Remove obstructions in the impeller.

Shaft bent.

Replace rotor assembly or straighten shaft if bend is not too great.

Worn bearings.

Replace bearings (see

Section 4

). Check for presence of foreign material.

Rotating element rubbing stator liner.

Replace bearings (see

Section 4

), Check stator liner and rotor can for

wear. Repair and/or replace as required.

Motor running hot

Motor operating at overload condition.

Make sure pump is operating at design point and conditions specified
when purchased.

Pump is operating below minimum flow.

Increase flow through the pump.

Pump is running dry.

Check suction line for obstructions and closed valves

Appx. B. Troubleshooting

Содержание CHEMPUMP NC Series

Страница 1: ...INSTRUCTION MANUAL for Installation Operation and Maintenance June 2020 CHEMPUMPTM NC SERIES The Standard in Sealless Technology ...

Страница 2: ...ion and recommendations Applicable Standards and Regulations The NC Series pump conforms to the following standards 1 American Society of Mechanical Engineers ASME B 16 5 2 Canadian Standards Association CSA UL 778 CSA 22 2 No 108 Product Warranty Period This product is warranted for two years from date of delivery Please refer to Teikoku USA s Terms and Conditions of Sale for additional warranty ...

Страница 3: ...ure or liquid is present You must take measures if the possibility exists that the gas or liquid is toxic or hazardous to personnel or the environment Hazard Do not remove any bolts on pump motor or drain plugs The internal pressure can be higher than the atmosphere Ensure that the pump and motor are properly de pressur ized and decontaminated prior to performing any work Proper protective measure...

Страница 4: ...r 11 Table 2 5 Electrical Wiring Data 230 Volt 3 Phase 12 Table 2 6 Electrical Wiring Data 460 Volt 3 Phase 12 Table 2 7 Electrical Wiring Data 575 Volt 3 Phase 13 Table 2 8 Coolant Flow Rates 13 Table 2 9 Recirculation Flow Rates 14 Table 4 1 Recommended Tools for Disassembly Reassembly 19 Table 4 2 Recommended Tools for Inspection 19 Table 4 3 NC Series Bearing and Journal Dimensions 20 Table 4 ...

Страница 5: ...ns with proper pump selection and application If the selected pump does not have the required performance characteristics or if the materials of construction are not properly specified for the fluid being handled unsatisfactory operation may result No amount of maintenance can compensate for this If you are in doubt on your NC Series selection or application write or call your pump engineering rep...

Страница 6: ...ngs located on either side of the thrust bearing collar Each thrust bearing has a set screw which prevents rotation This thrust bearing system prevent metal to metal in the event of abnormal pump operation such as running dry or cavitation 1 6 Internal Cooling Flow Cooling for stator rotor and bearings as well as bearing lubrication is provided by circulation of the pumped fluid A portion of the f...

Страница 7: ...nditions including insufficient NPSH The suction line must have as few pressure drops as possible and available NPSH MUST be greater than required NPSH Depending on job conditions available NPSH can sometimes be increased to meet the NPSH required by the pump for satisfac tory operation NPSH can be tailored by changes in the piping in liquid supply level and by several other methods Refer to Appx ...

Страница 8: ...om the line Install gate valves with stems horizontal to avoid air pockets Globe valves should be avoided particularly where NPSH is critical If discharge pipe length is normal pipe diameter can be the same size as the pump discharge port diameter If discharge piping is of considerable length use larger diameter pipe one or two sizes larger If the pump is to discharge into a closed system or an el...

Страница 9: ...ion for Chempump motors under starting or normal running conditions but require a greater length of time than quick trip type thermal overload to protective devices to cut out This may not protect the meter if the motor is subject to locked rotor or overload conditions Also see Tables 2 3 2 4 2 5 or 2 6 for additional electrical wiring data for the most common Chempump motor sizes to assist in the...

Страница 10: ...kits are available from the factory for provision or already installed in the field when additional sta tor cooling is required These jackets are suitable only for heating mediums compatible with the gasket and jacket material with maximum inlet pressure of 50 psi and with maximum tempera ture of 150 F They should not be used as steam jackets Jackets welded to the stator band are available for use...

Страница 11: ...y Motor Size Start KVA Full Load KW Full Load BHP Full No Load Current at 230 Volts Full No Load Current at 460 Volts Full No Load Current at 575 Volts Max Process Fluid Temp F at Full Load N1 31 1 7 6 8 20 8 7 2 10 4 3 6 8 3 2 9 300 N2 47 2 9 3 9 5 27 6 9 8 13 8 4 9 11 0 3 9 290 N3 89 2 15 4 16 1 45 0 16 8 22 5 8 4 18 0 6 7 290 N4 119 5 20 2 20 8 57 4 24 0 28 7 12 0 23 0 9 6 275 N5 227 1 37 37 95...

Страница 12: ...lt 3 Phase 60 Hz NC Series Motor Size Switch Size AMPs Breaker Size AMPs Starter NEMA Size Conductor Size for Motor Leads Conduit Size for Motor Leads Conduit Size For Motor PB and TCO Leads Fuse Size Code and Current Limiting AMPs Fuse Size Dual Element AMPs Max Setting Time Limit Protection AMPs N1 30 20 1 14 1 2 3 4 50 35 12 0 N2 60 35 2 10 3 4 1 50 35 22 5 N3 100 60 60 3 8 1 1 60 50 36 2 N4 10...

Страница 13: ...tor Leads Conduit Size for Motor Leads Conduit Size For Motor PB and TCO Leads Fuse Size Code and Current Limiting AMPs Fuse Size Dual Element AMPs Max Setting Time Limit Protection AMPs N1 30 15 1 14 1 2 3 4 20 15 9 6 N2 60 30 30 2 12 3 4 3 4 40 25 18 0 N3 100 60 50 3 10 3 4 1 60 45 29 0 N4 100 60 70 3 8 1 1 60 50 40 5 N5 150 100 100 4 6 1 1 1 4 100 90 61 5 N6 200 200 5 1 1 1 2 2 175 150 119 4 N7...

Страница 14: ...flush fluid should not be close to its boiling point and should not exceed 300 F 2 4 2 Reverse Circulation 13 SE For normal clear fluid applications ChempumpTM NC Series are cooled and lubricated by the fluid being pumped However when the fluid being pumped is at or near its boiling point the addi tional heat picked up from the motor combined with the recircu lation fluid returning to the low pres...

Страница 15: ...Teikoku USA Chempump Instruction Manual NC Series 0220 15 Figure 2 5 Removable Water Jacket Figure 2 6 Removable Heat Exchanger ...

Страница 16: ...ond Delay Low differential pressure trip 60 Second Delay Pump Restart Repeat above timing sequence for a maximum of 3 starts If low differential continues after 3 starts a manual reset of the process controller is required B Dual pumps 20 Second Delay A Pump low differential pressure trip 60 Second Delay B Pump start 20 Second Delay B Pump low differential pressure trip 60 Second Delay A Pump star...

Страница 17: ...es not provide direction of rota tion The Teikoku TRC 1 hand held direction of rotation indicator is available from Teikoku USA This portable device can be used to confirm the rotation of any motor 1 Verify suction valve is 100 open 2 Set discharge valve 10 to 20 open 3 If applicable Check that valves in reverse circulation piping are open Verify that the correct restriction orifice is installed i...

Страница 18: ...more the following inspections shall precede its operation a Check secureness of base hold down bolts if supplied b Check terminal box for moisture and tightness of fittings c Upon starting check for excessive noise vibration or erratic speeds Caution If the pump appears to be airbound as a result of the unit not being properly primed do not continue operation Lo cate and correct the conditions th...

Страница 19: ...9 Remove the four 4 bolts and nuts attaching the pump assembly to the stand Lift the pump off the stand utilizing the four 4 eye bolts located on the pump casing Support the pump in the horizontal position 10 Remove the screws holding the pump casing to the pump casing adapter and remove the pump casing 11 Remove the screws holding the rear cover plate to the stator assembly and remove the coverpl...

Страница 20: ...tor indicates bearing wear on the wear indicator 1 Measure the inside diameters of the front and rear bearings and compare to the diameter of the rotor shaft journal If the difference in diameters is greater than that indicated in Table 4 3 replace the bearings 2 Inspect the thrust faces of the front and rear bearings If any scoring wear is visualized measure the length of the bearings Replace the...

Страница 21: ...cles of pumping fluids which may solidify such as caustic soda flush the system with steam water or the proper solvent to prevent the piping and internal passages of the pump from plugging up Where the ChempumpTM is fitted with a discharge filter flush pump during off cycles and check discharge filter for plugging 4 5 Reassembly 1 Reassemble pump by reversing the disassembly procedure Replace all ...

Страница 22: ...1 7 30 1 83 1 49 0 91 0 58 0 15 0 12 NL2 575 460 230 208 R R R R 5 27 3 37 0 84 0 69 0 42 0 27 0 07 0 06 NL3 575 460 230 208 R R R R 2 28 1 46 0 36 0 30 0 18 0 12 0 03 0 02 NL4 575 460 230 208 R R R R 1 89 1 21 0 30 0 25 0 15 0 10 0 02 0 02 NL5 575 460 230 208 R R R R 1 13 0 72 0 18 0 15 0 09 0 06 0 01 0 01 Resistance values 25 C contact your Teikoku representative distributor or contact the facto...

Страница 23: ... Troubleshooting 25 Appx C NC AA6 Curve 26 Appx D NC AB Curve 27 Appx E NC AA 8 Curve 28 Appx F NC A50 8 Curve 29 Appx G NC A60 8 Curve 30 Appx H NC A05 Curve 31 Appx I NC A50 10 Curve 32 Appx J NC A60 10 Curve 33 Appx K Decontamination Certification and Flushing Procedure 34 Appx L Repair Receipt Policy 37 ...

Страница 24: ...ce takes the guesswork out of confirming the correct rotation of the motor It is light compact and easy to use Not only can this be used on Teikoku canned motors but other three phase induction motors as well Place TRC 1 on an operating motor as illustrated below The arrow that lights up indicates the direction of rotation There is an arrow on the pump case that indicates the correct direction of ...

Страница 25: ... Impeller clogged Remove obstructions in impeller Wrong direction of rotation Reverse any two motor leads Damaged impeller Impeller must be repaired or replaced Pump loses prime after starting Pump not properly primed at starting Reprime pump in accordance with Section 3 2 2 Excessive change in suction vessel pressure Locate source pressure fluctuations and correct as required Air or gas in liquid...

Страница 26: ...mbers beneath model designations indicate full load horsepower ratings for the referenced motor load lines When pumping fluids with specific gravities other than 1 0 select pump model see load line to handle load equivalent in feet of water e g 40 feet of fluid of Sp Gr 1 5 is load equivalent of 60 feet 1 5x40 of water Please note that this is merely a short cut method to estimate the model requir...

Страница 27: ...3 94 WAF DRAWN CURVE DATE A 70131 6 5 8 6 5 1 2 5 4 1 2 4 20 30 55 50 57 50 55 REV N1 N2 Rev 1 03 95 Redrawn based on hydraulic test data Rev 2 04 00 Redrawin based on hydraulic test data and added inducer metric axes SAJ IMP EYE AREA IMP DIA PUMP CASING IMPELLER RPM SERIAL hydraulic Numbers beneath model designations indicate full load horsepower ratings for the referenced motor load lines When p...

Страница 28: ...or the factory of water Please note that this is merely a short cut method to estimate the model required For proper model selection especially when handling a fluid with a Sp Gr other than 1 0 select pump model see load line to handle load equivalent in feet of water e g 40 feet of fluid of Sp Gr 1 5 is load equivalent of 60 feet 1 5x40 hydraulic Numbers beneath model designations indicate full l...

Страница 29: ...DIA greater than 1 7 consult your Chempump representative or the factory of water Please note that this is merely a short cut method to estimate the model required For proper model selection especially when handling a fluid with a Sp Gr other than 1 0 select pump model see load line to handle load equivalent in feet of water e g 40 feet of fluid of Sp Gr 1 5 is load equivalent of 60 feet 1 5x40 hy...

Страница 30: ...eater than 1 7 consult your Chempump representative or the factory of water Please note that this is merely a short cut method to estimate the model required For proper model selection especially when handling a fluid with a Sp Gr other than 1 0 select pump model see load line to handle load equivalent in feet of water e g 40 feet of fluid of Sp Gr 1 5 is load equivalent of 60 feet 1 5x40 hydrauli...

Страница 31: ...ease note that this is merely a short cut method to estimate the model required For proper model selection especially when handling a fluid with a Sp Gr other than 1 0 select pump model see load line to handle load equivalent in feet of water e g 40 feet of fluid of Sp Gr 1 5 is load equivalent of 60 feet 1 5x40 hydraulic Numbers beneath model designations indicate full load horsepower ratings for...

Страница 32: ...hempump representative or the factory of water Please note that this is merely a short cut method to estimate the model required For proper model selection especially when handling a fluid with a Sp Gr other than 1 0 select pump model see load line to handle load equivalent in feet of water e g 40 feet of fluid of Sp Gr 1 5 is load equivalent of 60 feet 1 5x40 hydraulic Numbers beneath model desig...

Страница 33: ... Please note that this is merely a short cut method to estimate the model required For proper model selection especially when handling a fluid with a Sp Gr other than 1 0 select pump model see load line to handle load equivalent in feet of water e g 40 feet of fluid of Sp Gr 1 5 is load equivalent of 60 feet 1 5x40 hydraulic Numbers beneath model designations indicate full load horsepower ratings ...

Страница 34: ...er Shipments received without this documentation will not be accepted and will be returned to the point of shipment CHECK ONE OF THE FOLLOWING Both the complete pump and the stator assembly have been flushed by following the applicable steps in section A plus section B C or D of the Teikoku USA Flushing Procedure on pages 2 and 3 of this form The motor must be rewound FLUID PUMPED ________________...

Страница 35: ... possible using compressed air or inert gas For pumps with shaft sleeves complete disassembly will be required to remove trapped fluid Flush all auxiliary tubing piping and equipment such as heat exchangers For any questions on decontamination contact your Teikoku service representative See sections B through D for stator assembly decontamination requirements where a liner breach is suspected Pump...

Страница 36: ...luid as possible by purging the stator with compressed air or inert gas for 3 5 minutes If the terminal box and terminal plate are to be returned assure that all components have been decontaminated NOTE ON DECONTAMINATION TEIKOKU USA RESERVES THE OPTION TO RETURN PUMPS AT THE CUSTOMER S EXPENSE IF THEY HAVE NOT BEEN PROPERLY DECONTAMINATED C NC series stator assembly without TRG If a stator liner ...

Страница 37: ...M BOTH THE CARRIER AND CUSTOMER OF THE REFUSAL These requirements are essential to Teikoku USA s safety practices and reviews that serve to protect all of Teikoku USA s associates visitors and customers Teikoku USA thanks you in advance for your adherence to our policy regarding returns for evaluation and or service Please feel free to contact the service center personnel at the Teikoku USA facili...

Страница 38: ...lvania 959 Mearns Road Warminster PA 18974 215 343 6000 Texas 5880 Bingle Road Houston TX 77092 713 983 9901 Ohio 27881 State Route 7 Marietta OH 45750 740 538 5332 www teikokupumps com NCT A50 8 N3 25S 0620 ...

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