A.O. Smith Century Centurion Installation Maintenance And Service Manual Download Page 6

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Motor Troubleshooting

Motor Fails To Start (makes no sound) ..................19

Motor Fails To Start (hums, tries to start,

blows fuse or trips breaker) ....................................20

Motor Starts But Shuts Down

(overload problem)..................................................21

Noisy Motor

.....................................................................21

Motor Hot, Smoking Or Cycling

.....................................22

Information Needed For Motor Replacement

..............23

Troubleshooting A Capacitor

.........................................23

Best Way To Use A Volt-Ammeter

.................................24

How To Replace Bearings

..............................................24

Service

............................................................................27

Wiring Diagrams’ Table of Contents

.............................28

Wiring Diagrams

.......................................................29-54

Date of Manufacture Table

............................................55

Summary of Contents for Century Centurion

Page 1: ...A O Smith 531 North Fourth Street Tipp City OH 45371 937 667 2431 Fax 937 667 5873 www aosmithmotors com Bulletin 2944 A O Smith Corporation 2006 2944 1 06...

Page 2: ...Installation Maintenance Service Troubleshooting CENTURY POOL SPA MOTOR MANUAL...

Page 3: ...motors shown in the following pages All you need are a few basic tools and some helpful hints the kind that appear throughout this booklet We ve included all the information we think you ll need to re...

Page 4: ...and maintenance at one time or another Safety first Remember before you begin to work on any electrical appliance be sure to TURN OFF THE POWER The only time you ll need the power on is when you chec...

Page 5: ...ation 9 Installation Heat 13 Moisture 14 Power Source 14 Altitude 14 Mounting 14 Electrical Connections 15 Grounding 15 Wire Size 15 Wire Selection Guide 16 Tools 17 Maintenance Moisture 17 Cooling 18...

Page 6: ...20 Motor Starts But Shuts Down overload problem 21 Noisy Motor 21 Motor Hot Smoking Or Cycling 22 Information Needed For Motor Replacement 23 Troubleshooting A Capacitor 23 Best Way To Use A Volt Amme...

Page 7: ...ng brackets True NEMA 56 frame Keyed or threaded shaft UL standard 1081 approvable Full rated and Up rated 50 C Ambient Available as a Century two speed motor Centurion SE C flange Switchless 1081 Mot...

Page 8: ...service factor Single or three phase True NEMA 56 frame UL standard 1081 approvable Full rated and Up rated 50 C Ambient Available as a Century two speed motor Neptune C Square Flange Standard Efficie...

Page 9: ...rs For Spas and above ground pools thru bolt mount 3 4 3 Hp 56 frame conversion base 3 1 2 shaft height 3 8 threaded shaft Auto reset overload protection 1 0 service factor C entury pool and spa pump...

Page 10: ...Continuous rated run capacitor provides high running efficiency and better starting performance in low voltage situations 7 Easy connect terminal board is designed with screw post line terminals All...

Page 11: ...or below the capacitor Shown below is a sample pool motor identification nameplate As you read the nameplate refer to the guide so that you understand the meaning of each item that the manufacturer pr...

Page 12: ...configuration It doesn t indicate the diameter of the shell A O Smith s line of Centurion and Centurion SE motors have a 56 frame shell and are 6 5 inches in diameter Neptune and Flex 48 products are...

Page 13: ...he shaft at rated load 7 HZ Hertz Measurement of frequency equaling cycles per second of alternating current 8 PH Phase Denotes a single or three phase motor 9 SF Service Factor Service factor is the...

Page 14: ...tally enclosed fan cooled Most pool and spa motors feature a dripproof design with 1081 features 16 CODE The NEMA code letter specifies locked rotor kVA per Hp volts multiplied by locked rotor amps di...

Page 15: ...cover the motor to protect it from possible debris or water be sure to leave enough space between the cover and the motor for adequate ventilation A O Smith single phase pool and spa motors feature a...

Page 16: ...too high contact the local utility If it s too low check for overloaded circuits loose connections or wire of the wrong gauge see wire selection guide Generally motors will run hotter with increasing...

Page 17: ...ng conductor should always be connected under the green grounding screw which is located within the terminal compartment of the motor National and local electrical codes are important and should be ad...

Page 18: ...230V Power Line Maximum Distance from Fuse Box to Motor Motor Hp 50 100 150 200 1 3 14 14 14 14 1 2 14 14 14 14 3 4 14 14 14 14 1 14 14 14 12 1 1 2 14 14 12 12 2 14 14 12 10 3 12 12 10 10 THE SIZES SH...

Page 19: ...marking A O Smith pool and spa pump motors are built tough to run day after day without being serviced When service is necessary serviceable parts usu ally can be accessed quite easily For example cap...

Page 20: ...d snow from clogging the inlets DO NOT SEAL THE MOTOR IN PLASTIC OR OTHER AIR TIGHT WRAPPINGS because condensation may form on the inside damaging bearings and insulation In general the inside of the...

Page 21: ...sure fuses are of proper size and type then check for a blown fuse or tripped circuit breaker 3 Be sure the motor is connected correctly as shown on motor nameplate but first TURN OFF THE POWER Check...

Page 22: ...dersized wiring an overloaded circuit or a burned start winding 3 If the voltage is proper at terminals and motor is hot TURN OFF THE POWER and allow the motor to cool to ambient temperature then reap...

Page 23: ...Incidentally with a Centurion motor you won t have this problem because it doesn t have a switch to malfunction MOTOR STARTS BUT SHUTS DOWN Thermal Overload Protection 1 Check the voltage at motor ter...

Page 24: ...OR HOT SMOKING OR CYCLING 1 Check the motor s ventilation by looking for clogged air vents or openings Clean out all leaves dirt and other pool and spa gunk 2 Compare connections and wiring to diagram...

Page 25: ...See page 5 7 2 Horsepower 3 Service factor 4 Voltage 5 Pump part number manufacturer brand name TROUBLESHOOTING A CAPACITOR To check a capacitor with an ohmmeter first TURN OFF THE POWER If possible r...

Page 26: ...ns With proper voltage the reading should not exceed the MAXIMUM LOAD or SF amps rating of the motor HOW TO REPLACE BEARINGS Replacing the bearings in a motor isn t a difficult task provided you follo...

Page 27: ...as necessary a Take out the thru bolts that secure the brackets to the frame b Remove the bracket opposite the shaft by placing a screwdriver blade in the notches of this bracket and tapping the handl...

Page 28: ...e long end of the shaft Tap the bearing into place using the proper size tube and a mallet Attach any other parts as used to the long shaft end b Opposite end Place the long end of the shaft on the wo...

Page 29: ...ave it serviced at a Authorized A O Smith Service Center to qualify for warranty coverage When ordering parts refer to the part number and serial number on the motor nameplate For your convenience a s...

Page 30: ...Old Style 36 37 E Plus Switchless Old Style 230 volt 38 2 Speed Wishbone Old Style 39 40 41 Micro Switch Formerly Gould Guard 42 Switchless Formerly Gould Guard 43 44 Centurion Solid State 46 47 E Pl...

Page 31: ...0 115 Volt Switchless 29 ORNG LINE 1 LINE 2 L2 L1 B A BRN RED WHT BLK YLW YELLOW ORNG BRN 1 3 2 PROTECTOR MAIN CAPACITOR WHT BLK YLW LINE 1 LINE 2 L2 L1 1 2 PHASE 1 2 PHASE A BLK YELLOW BLK RED BLUE B...

Page 32: ...BJ11 Single Voltage Type CX 11 2 5Hp 230 Volt Switchless EXTERNAL CONNECTIONS 1 3 2 PROTECTOR MAIN CAPACITOR BLK BLUE BRN RED WHT BLK YLW LINE 1 LINE 2 L2 L1 BLUE 1 2 PHASE 1 2 PHASE B A Wiring Diagra...

Page 33: ...CITOR L1 4 3 L2 LINE 1 LOW VOLT CONNECTION LINE 2 RED RED ORNG ORNG BRN BRN YLW YLW YLW BLK YLW BLK BLU WHT WHT OVERLOAD EXTERNAL CONNECTIONS Wiring Diagram 166359 Connection Label 166362 Dual Voltage...

Page 34: ...ACITOR 1 L1 3 4 L2 2 LINE 1 LINE 2 MAIN 3 RED RED BRN BRN YLW BLK BLU BLU WHT BLK Single Voltage 230 Volt Type CX 2 3 4 Hp Switchless EXTERNAL CONNECTIONS Wiring Diagram 166360 166361 Connection Label...

Page 35: ...N MAIN LOW VOLTAGE 1 2 4 LINE LINE HIGH VOLTAGE 6 5 BLK BLK YLW BLUE BRN BRN RED ORNG BRN RED BRN RED BRN BRN ORNG 115 230 Volt Type CS 1 2 to 11 2 Hp Wishbone Old Style INTERNAL WIRING EXTERNAL CONNE...

Page 36: ...AIN MAIN 1 2 6 5 4 LINE LINE 1 2 4 LINE LINE 6 5 ORNG BRN RED BRN RED LOW VOLTAGE HIGH VOLTAGE BLK YLW BLUE BRN RED ORNG ORNG BLK RED BRN 115 230 Volt Type CP 2 Hp Wishbone Old Style INTERNAL WIRING E...

Page 37: ...RUN CAPACITORS PHASE MAIN LINE 2 2 3 1 4 5 BLK BLK YLW BLUE RED YLW BLK YLW BRN 230 Volt Type CP 3 Hp Wishbone Old Style INTERNAL WIRING EXTERNAL CONNECTIONS Wiring Diagram 153477 Connection Label 115...

Page 38: ...AIN MAIN LINE LINE LINE LINE 1 1 2 2 4 4 5 5 6 3 3 6 BLK YLW BLK YLW BLUE BRN ORNG START CAPACITOR BLK YLW BLK YLW BLUE BRN ORNG 115 230 Volt Type CS 1 2 to 11 2 Hp Single Arm Switch Old Style LOW VOL...

Page 39: ...1 4 5 BLK YLW BLUE BRN BRN RED ORNG ORNG PROTECTOR PHASE MAIN MAIN START LINE RUN CAPACITOR CAPACITOR BLK YLW BLUE BRN BRN RED ORNG ORNG BLK YLW BLK YLW 6 1 6 115 230 Volt Type CP 2 Hp Single Arm Swi...

Page 40: ...8 PROTECTOR CAPACITORS PHASE MAIN LINE LINE 2 3 2 1 4 5 WHT WHT YLW BLK YLW BLUE BLUE 230 Volt Type CX 2 and 3 Hp Switchless Old Style INTERNAL WIRING EXTERNAL CONNECTIONS Wiring Diagram 156228 E PLUS...

Page 41: ...LK YLW YLW BLK RED ORNG LOW SPEED MAIN HIGH SPEED PROTECTOR CAPACITOR MAIN HIGH SPEED 1 2 3 BLK YLW YLW BLUE BLK BLK BRN RED ORNG PROTECTOR 115 Volt Type CSM 1 2 to 3 4 Hp Wishbone Old Style INTERNAL...

Page 42: ...ED 1 2 3 BLK YLW YLW BLUE BLK BLK BRN RED ORNG PHASE LINE LINE TOGGLE SWITCH LOW SPEED HIGH SPEED PROTECTOR BLK YLW YLW BLK RED ORNG 230 Volt Type CSM 1 and 11 2 Hp Wishbone Old Style INTERNAL WIRING...

Page 43: ...41 230 Volt Type CPM 2 Hp Wishbone Old Style INTERNAL WIRING EXTERNAL CONNECTIONS Wiring Diagram 157057 Connection Label 157187 2 SPEED...

Page 44: ...42 Formerly identified as Gould Guard 115 230 Volt Type CS 1 2 to 1 Hp Old Style LOW VOLTAGE HIGH VOLTAGE Wiring Diagram 157891 Connection Label 157892 MICRO SWITCH MOTOR...

Page 45: ...43 Formerly identified as Gould Guard 230 Volt Type CX 11 2 HP Switchless Old Style HIGH VOLTAGE Wiring Diagram 157663 Connection Label 157664 SWITCHLESS MOTOR...

Page 46: ...1 2PHASE LINE LINE 1 5 6 1 2 3 YLW BLK BLU BLU WHT RUN CAPACITOR Formerly identified as Gould Guard 230 Volt Type CX 2 and 3 HP Switchless Old Style HIGH VOLTAGE Wiring Diagram 157669 Connection Labe...

Page 47: ...46 Two Speed Single Voltage 115 Volt Type CXPM 1 2 06 to 3 4 10 Hp Solid State Switch EXTERNAL CONNECTIONS Wiring Diagram 167174 Connection Label 167200 CENTURION...

Page 48: ...VIEW OF BACK SIDE OF SOLID STATE SWITCH AND TERMINAL BOARD NOTE 1 THIS LEAD IS L2 WHEN USING SWITCH RED ORNG BLK YLW BRN YLW BRN BLU BLU TO LOW SPEED MAIN LINE 1 LINE 2 RED BLU WHT BLK ORNG RUN CAPACI...

Page 49: ...AL DIAGRAM HIGH VOLT CONNECTION LOW VOLT CONNECTION 3 L1 4 L2 LINE LINE YLW YLW BLK YLW BLK YLW BRN BRN BRN RED RED BLU WHT WHT WHT ORNG ORNG 3 3 Dual Voltage 115 230 Volt Type CX 3 4 to 11 2 Hp Switc...

Page 50: ...LINE 2 CAPACITORS PHASE OVERLOAD L1 L2 1 2 3 YLW BLK YLW BLU BLU WHT 3 Single Voltage 230 Volt Type CX 2 and 3 Hp Switchless EXTERNAL CONNECTIONS Wiring Diagram 167976 Connection Label 166363 E PLUS S...

Page 51: ...50 Two Speed Single Voltage 115 Volt Type SPM 3 4 10 HP INTERNAL WIRING EXTERNAL CONNECTIONS Wiring Diagram 179679 FLEX 48 FRAME...

Page 52: ...L S PHASE II S PHASE BLU BLU PROTECTOR WHT WHT BRN YLW BLK SPLICE TYP 2 PLACES HIGH SPEED LOW SPEED L I L 2 1 2 3 2 3 6 5 4 Two Speed Single Voltage 115 or 230 Volt Type CXSM 11 2 18 HP Type CXSM 2 0...

Page 53: ...LK SPLICE TYP 2 PLACES RED YLW ORNG BLK HIGH SPEED LOW SPEED L I L 2 1 2 3 2 3 4 6 5 Two Speed Single Voltage 115 or 230 Volt Type CSM 1 0 12 Hp 115 Volt Type CSM 1 0 16 Hp 115 Volt Type CSM 1 5 18 Hp...

Page 54: ...LK WHT PHASE MAIN RED LINE LINE BLU BLU AIR SWITCH YLW YLW YLW BLK WHT PHASE MAIN 1 2 3 1 2 3 2 3 5 6 1 2 3 5 6 1 4 4 Single Voltage 115 Volt Type SP 1 2 to 11 2 Hp WITHOUT AIR SWITCH WITH AIR SWITCH...

Page 55: ...R YLW PHASE LINE 2 LINE 1 2 2 3 5 4 6 1 3 1 RED RED RED MAIN MAIN MAIN START CAPACITOR ORNG YLW BLK SPLICE BRN BLU PROTECTOR YLW PHASE LINE 2 LINE 1 2 2 3 5 4 6 1 3 1 WHT Dual Voltage 230 115 Volt Typ...

Page 56: ...l Number Mfg Sequence This motor was manufactured in November 1990 Serial Serial Serial Letter Year Letter Year Letter Year Serial Letter Designation Serial Serial Letter Year Letter Year 1 JAN 7 JULY...

Page 57: ...INE 1 B D A LINE 2 YELLOW PHASE BLACK PURPLE RED RED RED YEL BLK YEL BLK BACK C L1 L2 ORANGE ORANGE BLUE BLUE PROTECTOR ORANGE D MID BACK YELLOW BACK MAIN 1 2 3 Single Voltage 230 Volt Type CP 11 2 2...

Page 58: ...OWN YEL BLK BACK YEL BLK C L1 A D B A D B L2 ORANGE ORANGE WHITE WHITE B MAIN BLUE BLUE PROTECTOR ORANGE D MID BACK YELLOW BACK MAIN 1 2 3 LOW VOLTAGE HIGH VOLTAGE BROWN B ORANGE B BACK WHITE RED YEL...

Page 59: ...B A D BROWN HIGH VOLTAGE LOW VOLTAGE YEL BLK BACK YEL BLK C L1 L2 ORANGE WHITE PROTECTOR ORANGE D MID BACK YELLOW BACK MAIN MAIN BLUE BLUE LINE 1 RED WHITE B YEL BLK BACK LINE 2 B A D C L1 L2 ORANGE D...

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