Brushless DC Condenser and Evaporator Motors for Carrier ...

Rev. 10/2006

Model Numbers 071137000,071138000, 071139000,

071140000 & 071203000

Brushless DC Condenser andEvaporator Motors for Carrier

Transicold Air ConditioningSystems with Internal-Drive

Electronics

Service & Parts Manual

Contents

Chapter 1: Getting Started

Product Description 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Configurations 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Motor Compatibilities 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

About This Manual 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 2: Recommended Maintenance

Introduction 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Motor and Bearings 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 3: Troubleshooting

Introduction 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

No/Low Air Flow 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Motor Will Not Operate 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fixing the Problem 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 4: Maintenance and Repair Procedures

Introduction 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing the Motor from the Bus 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacing the Bearings 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Disassembling the Motor 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reassembling the Motor with New Bearings 4-6. . . . . . . . . . . . . . .

Replacing the Electronics Component 4-7. . . . . . . . . . . . . . . . . . . . . . . .

Removing the Electronics Assembly 4-7. . . . . . . . . . . . . . . . . . . . . .

Installing the New Electronics Assembly 4-8. . . . . . . . . . . . . . . . . .

Timing the Motor 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Reattaching the Motor to the Bus 4-10. . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendixes

Appendix A: Replacement-Parts Lists for CTAC Motors A-1. . . . . .

Appendix B: Specifications Outline Drawings forCTAC Motors B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tables

Table 1.1. Motor Identifiers for Replacement CTAC Motors 1-2. . . . .

Figures

Figure 4.1. CTAC Motor with Parts Removed 4-3. . . . . . . . . . . . . . . . .

Figure 4.2. CTAC Motor Showing Stator, Rotor andElectronics Component 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4.3. Detail View of Dual Lip Seal on Rear Endbell 4-6. . . . . . .

Figure 4.4. Electronics Housing Showing the Red(Positive) Power Lead Adjacent to the Teeth in theElectronics Housing 4-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure 4.5. Butt Splice of the Electronics Assembly Leads 4-8. . . . . . .

Chapter 1: Getting Started

1-2 Chapter 1: Introduction

Brushless DC Condenser and Evaporator Motors for Carrier Transicold AirConditioning Systems with Internal Drive Electronics are used to power theair conditioning system’s condenser and evaporator. The motors use a brush-less, electronically commutated direct-current motor designed for long prod-uct life. The brushless, direct-current motors operate on 27.6 volts DC witheither a 1/2 horsepower or a 3/4 horsepower design. The motors contain nowearing components except for the bearings, which are designed for up to60,000 hours of operation and are not subject to the life-reducing brush dustinherent in brush motors. ECDC motors have no brushes and are sealed toprevent contamination from salt, road chemicals, wash-down products andhumidity. These advantages, coupled with life-cycle cost savings, result insuperior performance from AMETEK ECDC motor products.

CTAC motors are available in two condenser/evaporator motor configura-tions: 1/2 HP or 3/4 HP.

CTAC motors are labeled with a numerical identifier. The identifier indicateswhether the motor has an OEM (original equipment manufacturer’s) partnumber, an AM (aftermarket) part number or a Carrier-manufactured partnumber (see table 1.1, p. 1-2).

Table 1.1. Motor Identifiers forReplacement CTAC Motors

Motor ID

Product DescriptionAM OEM Carrier

071137000 071046000 54-00529-01 Condenser Motor, 1/2 HP

071138000 071047000 54-00529-00 Evaporator Motor, 1/2 HP;CW or CCW Rotation

071139000 071075000 54-00533-00 Condenser Motor, 3/4 HP

071140000 071076000 54-00532-00 Evaporator Motor, 3/4 HP;CW or CCW Rotation

071203000 071147000 501-152 Evaporator Motor, 3/4 HP;CW or CCW Rotation

Note: OEM = Roton Motor Number; AM = After-Market Motor Number; HP =Horsepower; CW = Clockwise; CCW = Counterclockwise.

This manual provides step-by-step instructions and annotated diagrams forservicing CTAC motors. A parts list for each motor model is provided in ap-pendix A. Outline drawings for the motors are provided in appendix B.

On the parts lists, each part is identified by part number, item number, quan-tity and description. The item numbers are used to annotate the exploded-view drawings included in this manual (see, for example, figure 4.2, p. 4-5).

PRODUCT DESCRIPTION

Configurations

Motor Compatibilities

ABOUT THIS MANUAL

Chapter 1: Introduction 1-3

Circled numbers on the drawings refer to the corresponding item numberson the motor repacement-parts list. For example:

107

113

refers to item number 107 (O-ring) and part number 122125 on the replacement-partslists (see appendix A).

refers to item number 113 (bearingl) and part number 522525 on thereplacement-parts lists (see appendix A).

These circled numbers also correspond to numbers in the maintenance proce-dures chapter (see chapter 4) of this manual. In the text of the steps, the itemnumbers are enclosed in flat brackets and follow the part name being refer-enced. For example:

wave spring [110] refers to item number 110 on the replacement-parts lists (seeappendix A).

When a notation such as (2X) appears with a part name on an annotateddrawing, the number refers to the quantity of that particular part that isneeded. For example:

FILLISTER-HEAD SCREW (2X) means that two such screws are needed.

The remaining sections of this manual are as follows:

• Chapter 2: Recommended Maintenance

• Chapter 3: Troubleshooting

• Chapter 4: Maintenance and Repair Procedures

• Appendix A: Replacement-Parts Lists for CTAC Motors

• Appendix B: Specifications Outline Drawings for CTAC Motors

Four sets of multipart procedures are included in Chapter 4:

• Removing the Motor from the Bus—includes detaching the motor from its fas-teners on the bus

• Reinstalling the Motor onto the Bus—includes hooking up the motor to itsfasteners on the bus

• Replacing the Bearings—includes removing the shaft/rotor assembly; chang-ing the ball bearings; and assembling the shaft/rotor assembly

• Replacing the Electronics Component—includes removing the electronics assem-bly and the electronics housing and installing a new electronics assembly

Chapter 2: Recommended Maintenance

2-2 Chapter 2: Recommended Maintenance

The primary advantage to using ECDC motor products is the life-cycle costsavings with regard to maintenance. The elimination of brushes and commu-tators (as in brush DC motors) makes ECDC motors more reliable becausethere are no brushes or commutators to replace or service. ECDC motors alsoare sealed to protect them from outside contamination.

CTAC motors require scheduled maintenance of the bearings only. The bea-rings are the only wearable parts and should be changed after six years ofservice. This is an estimate of useful bearing life, and the actual life may belonger depending on load and severity of use. CTAC motors requires no oth-er maintenance.

INTRODUCTION

MOTOR AND BEARINGS

Chapter 3: Troubleshooting

3-2 Chapter 3: Troubleshooting

When using CTAC motors, you may encounter one or all of the followingproblems:

• The motor works, but there is no air flow.

• The motor works, but the air flow is low.

• The motor will not operate.

The “no air flow”/”low air flow” problems mean that something in the mo-tor system is not operating properly. Causes may include an inoperable mo-tor, a failed part or a blockage of some sort. An inoperable motor itself canhave multiple causes.

The two sections below tell you how to troubleshoot and find the cause of theproblem you are experiencing.

If the motor does not come on, follow the steps below to determine whetherthe motor has failed or if some other part of the system is causing the problem:

1. Check the operating speed of the propeller or the impeller, depending onwhich motor is not working properly.

2. Check the connection of the propeller or the impeller, depending onwhich motor is not working properly.

3. Check that propeller or the impeller is rotating properly, depending onwhich motor is not working properly.

4. If the motor is operating but at a reduced speed, check the polarity of theleads. Be sure that the lead wires are connected properly. The polarity ofthe leads should be positive (+) red and negative (- ) black. If the polarityis reversed, the motor will not operate. The motor will short to the volt-age source. Hook up the leads correctly, reset the circuit-protection de-vice, and the motor will operate properly.

Different bus systems will operate at different set points. The amp readingfor properly operating motors should remain fairly consistent throughoutthe same bus model and model year.

NOTE

If the polarity is correct, take an ammeter reading. If the ammeter read-ing remains at 100 mA or less, you will need to remove the motor for re-pair or replacement of faulty, worn or damaged parts. Which option youchoose will depend on the damage you find after disassembling the mo-tor and inspecting the condition of the various parts of the motor. Instruc-tions for removing the motor, making repairs, putting the motor back to-

INTRODUCTION

NO/LOW AIR FLOW

Chapter 3: Troubleshooting 3-3

gether and reattaching the motor to the bus mounting plate are providedin chapter 4.

An ammeter reading over 28 amps may indicate that the motor’s bearingsare failing. Verify that the motor runs properly. If the current reading isgreater than 30 amps, the bearings should be replaced.

If the ammeter reading is 100mA or less, check the supply voltage toverify that the proper voltage is being applied to the motor.

The proper ammeter reading will depend on the type of bus in which themotor was installed, as each type of bus will load the motor differently.NOTE

If the motor will not operate, follow the steps below to determine the cause ofthe problem:

1. Check the connections to the motor terminals to verify that the red (posi-tive) and black (negative) leads are connected to the proper supply volt-age. If the leads are reversed, the unit will not operate. The pump willshort to the voltage source. Check the polarity connections, and reset thebus circuit-protection device.

2. Check the motor connections with a voltmeter to verify that the propervoltage is being supplied to the motor.

The proper voltage reading will depend on the type of bus in which themotor was installed. In general, though, the motor should drawapproximately 3 amps at no-load.

NOTE

3. Check the connection of the signal leads coming from the motor. Be surethey are connected to the proper operating functions as shown in the out-line drawings in appendix B.

4. If the motor is receiving the proper voltage and still does not operate, themotor will need to be serviced by the transit operator’s shop personnel, atan AMETEK-approved service facility or returned to AMETEK if the mo-tor is still under warranty.

After troubleshooting the problem and determining what needs to be fixed,follow the appropriate maintenance and repair procedures described in chap-ter 4 of this manual.

MOTOR WILL NOT OPERATE

FIXING THE PROBLEM

Chapter 4: Maintenanceand Repair Procedures

4-2 Chapter 4: Maintenance and Repair Procedures

This chapter provides step-by-step instructions for the following CTAC mo-tor maintenance and repair procedures:

• Removing and replacing the motor

• Removing and replacing worn or defective bearings

• Replacing the electronics component

Motor. Removal of the motor for servicing involves two main tasks:

• Disassembling the motor from the bus

• Reassembling the motor onto the bus

Bearings. Removal and replacement of the motor’s bearings involve twomain tasks:

• Disassembling the motor

• Reassembling the motor with new bearings

Electronics Component. Removal and replacement of the motor’s electron-ic component involves three main tasks:

• Removing the electronics assembly and housing

• Installing the new electronics

• Timing the motor

To remove the motor from the bus, follow the steps below, and refer to figure4.1 (p. 4-3) for an exploded view:

1. Turn off the power circuit-breaker to the motor being removed.

2. Remove the two screws that secure the top and bottom halves of the junctionbox [208/204] to the top of the motor assembly.

3. Remove the top half of the juntion box [208] and the junction-box gasket[207]. Set these parts aside.

4. Disconnect the motor connections from the bus voltage supply.

5. Remove either the propeller or the impeller, depending on which moterneeds to be serviced.

6. Remove the bolts connecting the motor to the bus.

INTRODUCTION

REMOVING THE MOTOR FROM THE BUS

Chapter 4: Maintenance and Repair Procedures 4-3

SCREW (2X)209

JUNCTION BOX,TOP HALF

208

207JUNCTION-BOXGASKET PAN-HEAD SCREW (4X)

206

205

FLAT WASHER (4X)

JUNCTION-BOX,BOTTOM HALF

204

203 TUBING

BASE PLATE210

202

STRAINRELIEF

214

KEY

215

RUBBER WASHER

211 SCREW (4X)

Figure 4.1. CTAC Motor with Parts Removed.

7. Remove the motor from the bus, and take it to a clean work area.

8. Remove the four socket-head screws [211] that fasten the base plate [210]to the motor assembly only if you need to replace the base plate [210].

9. Remove the strain-relief [202] and the tubing [203] from the hole in thebottom half of the junction box [208] and the top of the motor assemblyonly if you need to replace the motor’s electronics assembly.


To access the bearings on the shaft/rotor assembly, the condenser/evaporatormotor must be disassembled. Access is gained through the rear endbell. Followthe steps below, and refer to figure 4.2 (p. 4-5) for an exploded view:

1. Remove the four fillister-head screws [106] from the rear endbell [103].

The rear endbell [103] is the endbell through which the motor shaftextends.NOTE

2. Remove the rear endbell [103].

3. Note any shims [109] and their locations.

Be sure to note the location of any shims [109]. When you reassemble therear endbell [103], the shims must be installed in the same position theywere in before you removed them. Be sure also that the stator/housingassembly [102] is secured before attempting to remove the shaft/rotorassembly [104].

STOP

4. Remove the shaft/rotor assembly [104].

Use extreme caution when removing the shaft/rotor assembly [104], asthe rotor is stongly magnetized. Protect fingers from being pinched in themotor. Do not allow the rotor’s magnets to hit the motor. Doing so can chipthe magnet.

STOP

5. Remove the two bearings [113], one from each end of the shaft/rotor as-sembly [104]. The bearings are pressed on. You may need a puller toremove them.

Be sure that you do not damage the small encoder magnet opposite theshaft extension.STOP

6. Clean the bearing seats with No. 800 emery cloth to remove any dirt or rust.

REPLACING THE BEARINGS

Disassemblingthe Motor


Figu

re4.

2.C

TAC

Mot

orSh

owin

gSt

ator

,Rot

oran

dEl

ectr

onic

sA

ssem

bly.

Figure 4.2. EndbellELECTRONIC

SASSEMBLY

118

115

O-R

ING

(1OF2)

SCREW

(2OF8)

106

FILLISTER-H

EAD

120

FLATWASHER

(2OF4)

INSULATOR(3X)

117

NOMEX

ELECTRONIC

SHOUSIN

G116

SCREW

(2OF8)

106

FILLISTER-H

EAD

124

INSULATOR

(SELF-A

DHESIVE)

109

SHIM

107

O-R

ING

(1OF2)

110

WAVE

SPRIN

G

111

ELECTRONIC

SSLEEVE

108

115

O-R

ING

(1OF2)

SPLIT

121

WASHER(2X)

120

FLATWASHER

(2OF4)

SCREW

(2X)

122

FILLISTER-H

EAD

102

STATOR/H

OUSIN

GASSEMBLY

104

SHAFT/ROTOR

ASSEMBLY

BEARIN

G(2X)

113

107

O-R

ING

(1OF2)

105

LIP

SEAL(O

PTIO

NAL)

SCREW

(4OF8)

106

FILLISTER-H

EAD

REARENDBELL

103

FRONT

ENDBELL


To replace the old bearings and reassemble the motor with with new shaft/rotorassembly bearings, follow the steps below, and refer to figure 4.2 (p. 4-5) for anexploded view:

1. Press a new bearing [113] onto each end of the shaft/rotor assembly [104].

Press only on the I.D. of the bearing. Pressing on the O.D. will damage thebearing.STOP

2. Place the shaft/rotor assembly [104] into the opening on the stator/hous-ing assembly [102].

Be extremely careful to avoid damaging the shaft on the shaft/rotorassembly [104].STOP

3. Inspect the O-ring [107] on rear endbell [103] for chips, cracks or otherdamage.

4. Replace the O-ring [107] if it has been damaged.

5. If the motor model you are using has one or more lip seals [105] on themotor shaft (see figure 4.2, p. 4-5, and figure 4.3, p. 4-6), inspect the lipseal for damage and replace if damaged or worn.

Figure 4.3. Detail View of Dual Lip Sealon Rear Endbell.

VOID BETWEEN LIPSOF DOUBLE LIP SEAL

105 LIP SEAL

103

REARENDBELL

MOTOR SHAFT

6. If any shims [109] were removed when you disassembled the rear endbell[103], put them back exactly were they were before you removed them.

Be sure that the rear endbell [103] and any shims [109] are in the sameposition as they were before you removed them.STOP

7. Slide the rear endbell [103] onto the shaft of the shaft/rotor assembly [104].

Reassemblingthe Motor withNew Bearings


8. Insert the four fillister-head screws [106] into the holes on the rear endbell[103].

9. Torque the fillister-head screws [106] to aminimum of 20 inch-pounds.

10. Verify that the shaft/rotor assembly [104] has spring in it by pushing onthe end of the shaft. The shaft should spring back if properly installed. Ifthe shaft does not spring back, remove the rear endbell [103], and checkthe placement of the wave spring [110]. It should be positioned as shownin figure 4.2 (p. 4-5).

11. Connect the motor to an input voltage of 28 VDC. The motor should operateat the rated speed and draw approximately 3 amps with no load.

12. Check the rotation of the motor to verify that it is rotating in the proper di-rection as indicated on the outline drawings in appendix B.

To disassemble the area of the motor that houses the electronics component,follow the steps below, and refer to figure 4.2 (p. 4-5) for an exploded view:

1. Disconnect the motor from its power source (see REMOVING THE MO-TOR FROM THE BUS, p. 4-2).

2. Move the motor to a clean work area.

3. Remove the two long fillister-head screws [122] from the electronics hous-ing [116].

4. Remove the electronics assembly [118] and the electronics housing [116]from the rest of the motor assembly.

5. Press the electronics assembly [118] out of the electronics housing [116].

If the electronics component has an O-ring [115], use of a press is notnecessary.NOTE

6. Cut the three stator leads at the splice connection that protrudes from theelectronics assembly [118]. The leads are white and have red, blue andyellow stripes.

7. Discard the old electronics assembly [118].

8. Clean any RTV sealant and grime from the electronics housing [116].

9. Retain the Nomex insulator [117].

REPLACING THE ELECTRONICS COMPONENT

Removing theElectronicsAssembly


To install the new electronics assembly, follow the steps below, and refer tofigure 4.2 (p. 4-5) for an exploded view:

1. Apply RTV sealant to the O-ring [115] before placing the new O-ring[115] onto the electronics assembly [118].

2. Install the new electronics assembly [118] by orienting it so that the red(+) power lead is adjacent to the space between the teeth on the electron-ics housing [116] (see figure 4.4, p. 4-8).

RED LEADADJACENTTO TEETHIIN ELECTRONICS

Figure 4.4. Electronics Housing Showing the Red(Positive) Power Lead Adjacent to the Teeth inthe Electronics Housing.

HOUSING

POWER LEADS

3. Thread the leads through the strain relief [202] on the electronics housing[116] (see figure 4.4, p. 4-8, and figure 4.1, p. 4-3).

4. Reconnect the three stator leads (white with red, blue and yellow stripes).

5. Crimp and solder the stator leads to the electronics assembly [118] leads.Use a butt splice for this reconnection (see figure 4.5, p. 4-8).

The connections should be white/yellow to white/yellow and white/blue towhite/blue.NOTE

119

119 PRECUT TUBING

STATOR LEAD LEAD FROMELECTRONICS

Figure 4.5. Butt Splice of the Electronics Assembly Leads.

BUTT SPLICE

ASSEMBLY WITHBUTT SPLICE

Installing theNew ElectronicsAssembly


6. Tuck the connected stator leads (white with red, blue and yellow stripes)behind the capacitor on the electronics assembly [118] to prevent the leadsfrom rubbing on the encoder magnet.

Do not allow the stator leads to be pinched between the front endbell [108]and the electronics housing [116].STOP

7. Apply a rubber lubricant to the electronics housing [116] and the frontendbell [108]. This will ease the reassembly of the two parts.

8. Connect the electronics housing [116] to the front endbell [108].

9. Insert the two long fillister-head screws [122] and the two short fillister-head screws [106] into the electronics housing [116], but do not tightenthe screws.

All condenser/evaporator motor models do not have both sets offillister-head screws [122/106]. Insert the ones that are used with thecondenser/evaporator motor model you are working on.

NOTE

10. Time the rotation of the motor (see Timing the Motor, p. 4-9).

After the new electronics assembly has been installed, the motor needs to betimed to ensure that it works properly. To time the motor, follow the stepsbelow, and refer to figure 4.2 (p. 4-5) for an exploded view:

1. If they are not already loose, loosen—but do not remove—the two longfillister-head screws [122].

All condenser/evaporator motor models do not have both sets offillister-head screws [122/106]. Remove those included with thecondenser/evaporator motor model you are working on.

NOTE

2. Attach the clamp of an amp meter to the red (positive) power lead.

3. Use 24 VDC to energize the motor without a load.

4. Record the no-load current reading shown on the amp meter.

5. Slowly rotate the electronics assembly [118] either left or right but nomore than 15_ in each direction (see figure 4.4, p. 4-8).

6. Check the current on the amp meter as you rotate the electronics assem-bly [118].

Timing the Motor


The current reading should be decreasing. If the current reading isincreasing, reverse the direction of rotation. The motor is properly timedwhen you have found the lowest current reading.

NOTE

7. Note the proper orientation of the electronics assembly [118]. The elec-tronics assembly is properly oriented when the current reading is at itslowest value.

All condenser/evaporator motor models do not have both sets offillister-head screws [122/106]. Insert those included with thecondenser/evaporator motor model you are working on.

NOTE

8. Check the O-ring [115] (on motor models equipped with one) to be sure itis not pinched or otherwise damaged. Replace the O-ring [115], if needed.

9. For motor models without an O-ring [115], apply RTV sealant around theinside of the electronics assembly [118] where it mounts to the electronicshousing [116]. For motor models with an O-ring [115], sealant is not needed.

Be sure to apply enough sealant to ensure a tight seal of the electronicsassembly [118] to the electronics housing [116].STOP

10. Reinstall the electronics assembly [118], and torque the two long fillister-head screws [122] and the two short fillister-head screws [106] to 22 to 24inch-pounds.

11. Reenergize the motor, and check for counterclockwise rotation and a cur-rent level of 3 amps.

To reattach the motor to the bus, follow the steps below, and refer to figure4.1 (p. 4-3) for an exploded view:

1. Insert the strain relief [202] and the tubing [203] into the hole in themiddle of the bottom half of the junction box [204] and the hole on the topof the motor assembly [201] if they had been removed when you de-tached the motor from the bus.

2. Place the junction-box gasket [207] between the top and bottom hales ofthe junction box [208/204].

3. Place the junction-box halves [208/204] on top of the motor assembly[201], lining up the holes for the two screws [209], one on each side of thejunction-box halves [208/204].

REEATTACHING THE MOTOR TO THE BUS


4. Connect the lead wires from bus to the lead wires on the motor.

5. Insert the two screws [209] into the hole on each side of the junction boxhalves [208/204], and torque each screw [209] to 10 inch-pounds.

6. Attach either the propeller or the impeller to the motor shaft, dependingon which motor was serviced.

7. If needed, place the motor base-plate [210] onto the bottom of the motorassembly [201], lining up the holes for the four socket-head screws [211].

8. Reattach the bolts connecting the motor to the bus.

9. Turn on the bus circuit-protection device.

Appendix A:Replacement-Parts Lists

for CTAC Motors

A-2 Appendix A: Replacement-Parts Lists for CTAC Motors

Replacement-Parts Listfor Motor Model Numbers 071046000 and 071137000

071046000 & 071137000 — 1 Motor Assembly, Complete

526207000 102 1 Stator/Housing Assembly

525655000 103 1 Rear Endbell

526208000 104 1 Shaft/Rotor Assembly with Bearings

523669000 105 1 Lip Seal (Optional)

251651000 106 8 Fillister-Head Screw (8-32 x .875” Long)

122125000 107 2 O-Ring (3.989” x .070”)

526205000 108 1 Front Endbell

521434000 109 1 Shim (1.56“ I.D. x 2.04” O.D.)

521755000 110 1 Wave Spring

523429000 111 1 Electronics Sleeve

522525000 113 2 Bearing

122126000 115 2 O-Ring (3.737” x .103”)

526209000 116 1 Electronics Housing

523552000 117 3 Nomex Insulator

850056-00 118 1 Electronics Assembly

122050000 119 1 Tubing (Precut 1.50” Long x 3/16” Diameter)

120977000 120 4 Flat Washer (#10)

120964000 121 2 Split Washer (#10)

122055000 122 2 Fillister-Head Screw (10-24 x 3” Long)

526619000 124 1 Insulator (Self-Adhesive)

121786000 202 1 Strain Relief

121917000 203 1 Tubing

524598000 204 1 Junction Box (Bottom Half)

121817000 205 4 Flat Washer (#10)

251246000 206 4 Pan-Head Screw (10-24)

121808000 207 1 Junction-Box Gasket

524464000 208 1 Junction Box (Top Half)

251163000 209 2 Screw (6-32)

522535000 210 1 Base Plate

251493000 211 4 Screw (1/4-20)

121582000 214 1 Key

121704000 215 1 Rubber Washer

Appendix A: Replacement-Parts Lists for CTAC Motors A-3




525655000 103 1 Rear Endbell




122125000 107 2 O-Ring (3.989” x .070”)


521434000 109 1 Shim (1.56“ I.D. x 2.04” O.D.)

521755000 110 1 Wave Spring


522525000 113 2 Bearing

122126000 115 2 O-Ring (3.737” x .103”)



526216000 118 1 Electronics Assembly


120977000 120 4 Flat Washer (#10)

120964000 121 2 Split Washer (#10)




121917000 203 1 Tubing


121817000 205 4 Flat Washer (#10)

251246000 206 4 Pan-Head Screw (10-24)



251163000 209 2 Screw (6-32)

522535000 210 1 Base Plate

251493000 211 4 Screw (1/4-20)

121582000 214 1 Key





525655000 103 1 Rear Endbell



122125000 107 2 O-Ring (3.989” x .070”)


521434000 109 1 Shim (1.56“ I.D. x 2.04” O.D.)

521755000 110 1 Wave Spring


522525000 113 2 Bearing

122126000 115 2 O-Ring (3.737” x .103”)



850055-00 118 1 Electronics Assembly


120977000 120 4 Flat Washer (#10)

120964000 121 2 Split Washer (#10)




121917000 203 1 Tubing


121817000 205 4 Flat Washer (#10)

251246000 206 4 Pan-Head Screw (10-24)



251163000 209 2 Screw (6-32)

522535000 210 1 Base Plate

251493000 211 4 Screw (1/4-20)

121582000 214 1 Key

Appendix A: Replacement-Parts Lists for CTAC Motors A-5




525655000 103 1 Rear Endbell



122125000 107 2 O-Ring (3.989” x .070”)


521434000 109 1 Shim (1.56“ I.D. x 2.04” O.D.)

521755000 110 1 Wave Spring


522525000 113 2 Bearing

122126000 115 2 O-Ring (3.737” x .103”)





120977000 120 4 Flat Washer (#10)

120964000 121 2 Split Washer (#10)




121917000 203 1 Tubing


121817000 205 4 Flat Washer (#10)

251246000 206 4 Pan-Head Screw (10-24)



251163000 209 2 Screw (6-32)

522535000 210 1 Base Plate

251493000 211 4 Screw (1/4-20)

121582000 214 1 Key





525655000 103 1 Rear Endbell




122125000 107 2 O-Ring (3.989” x .070”)


521434000 109 1 Shim (1.56“ I.D. x 2.04” O.D.)

521755000 110 1 Wave Spring


522525000 113 2 Bearing

122126000 115 2 O-Ring (3.737” x .103”)





120977000 120 4 Flat Washer (#10)

120964000 121 2 Split Washer (#10)




121917000 203 1 Tubing


121817000 205 4 Flat Washer (#10)

251246000 206 4 Pan-Head Screw (10-24)



251163000 209 2 Screw (6-32)

525118000 210 1 Base Plate

251493000 211 4 Screw (1/4-20)

121582000 214 1 Key

121721000 215 1 Rubber Washer

Appendix B:Specifications Outline Drawings

for CTAC Motors

B-2 Appendix B: Specifications Outline Drawings for CTAC Motors

Figu

reB

.1.

Spec

ifica

tions

Out

line

Dra

win

gfo

rOEM

Mod

elN

umbe

r071

0460

00.

NOTES

Appendix B: Specifications Outline Drawings for CTAC Motors B-3

Figu

reB

.2.

Spec

ifica

tions

Out

line

Dra

win

gfo

rAM

Mod

elN

umbe

r071

1370

00.


Figu

reB

.3.

Spec

ifica

tions

Out

line

Dra

win

gfo

rOEM

Mod

elN

umbe

r071

0750

00.


Figu

reB

.4.

Spec

ifica

tions

Out

line

Dra

win

gfo

rAM

Mod

elN

umbe

r071

1390

00.


Figu

reB

.5.

Spec

ifica

tions

Out

line

Dra

win

gfo

rOEM

Mod

elN

umbe

r071

0470

00.


Figu

reB

.6.

Spec

ifica

tions

Out

line

Dra

win

gfo

rAM

Mod

elN

umbe

r071

1380

00.


Figu

reB

.7.

Spec

ifica

tions

Out

line

Dra

win

gfo

rOEM

Mod

elN

umbe

r071

0760

00.


Figu

reB

.8.

Spec

ifica

tions

Out

line

Dra

win

gfo

rAM

Mod

elN

umbe

r071

1400

00.


Figu

reB

.9.

Spec

ifica

tions

Out

line

Dra

win

gfo

rOEM

Mod

elN

umbe

r071

1470

00.


Figu

reB

.10.

Spec

ifica

tions

Out

line

Dra

win

gfo

rOEM

Mod

elN

umbe

r071

2030

00.

Brushless DC Condenser and Evaporator Motors for Carrier ...

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