T9568-AC-MMO-010_0_0.PDF

CORRECTION PAGE

PAGES

RECORD OF CORRECTIONS MADE

DESCRIPTION DATE SIGN ATU RE

APPROVAL AND PROCUREMENT RECORD

APPROVAL AND PROCUREMENT RECORD

BASIC APPROVAL DATA FOR:

Ocean Surveillance Ship, T-AGOS (GEK-87797) TMIN: T9568-AC-MM0-010/01288

Main Propulsion Motors, Bow Thruster Motors, and Ships Service Transformers

Approved by: Department of the Navy letter ser. 155.11/T-AGOS/0536, dtd. 1 May 1987

CONTRACT VESSB.S QUANTITY QUANTITY OF BUILDING

OR ORDER APPUCABLE OF MANUALS EQUIPMENT YARD

NO 0024-85-C-2046 T-AGOS 60 1 Halter Marine, Inc.

Moss Point, MS

REMARKS

CERTIFICATION:

It is hereby certified that the manual provided under this contract or order No.N00024-85-C-2046, has been approved by authority of basic approval data shown above.

General Eteef~pany

Schenectady, New York

LIST O F EFFECTIVE PAGES

PAGE

NUMBERS

Title Page LEP Page Record of Change 1-16

PART - 1

0-1 thru 0-8 1-1 thru 1-7 2-1 thru 2-15 3-0 thru 3-21 4-1 thru 4-45 5-1 thru 5-7

7-1 thru 7-27 8-1 thru 8-3

6-1

Pubs

GEH-4010

061000056

GEA-7053

GEH-4272

GEI-70530

GEH-1524

G l O O

IH-2

GE I - 56128

KA-2 25-A

GEK-8926

Test Report - Page 1 thru 10

Dwgs Fig. 8-3-1 thru 8-3-19

LIST OF EFFECTIVE PAGES

CHANGE IN PAGE CHANGE IN

EFFECT NUMBERS EFFECT

Original Original Original Original

Original Original Origin a1 Original Original Original Original Origin a1 Original

Original Original Original Original Original Original Original Original Original Original Original

Original

PART - 2

0-1 thru 0-4 Original 1-1 thru 1-9/10 Original 2-1 thru 2-6 Original 3- 1 / 3-2 Original 4-1 thru 4-35/36 Original 5-1 thru 5-3/5-4 Original 6-1 thru 6-2 Original 7-1 thru 7-6 Original 8-1 / 8-2 Original

Dwgs Fig. 8-1 thru 8-6 Original

Pubs GEA - 70 5 3 Original GEH- 3250 Original Test Report Original

PART - 3

0-1 thru 0-2 1-1 thru 1-2 2-1/2-2 3-1/3-2 4-1/4-2 5-1/5-2 6-1/6-2

8-118-2 7-1 thru 7-2

Original Original Original Original Original Original Original Original Original

Dwgs Fig. 8-1 Original Fig. 8-2 Original

O r ig i na 1 Pubs GEK-332 76 Original

Original GEK- 3 3 2 78

I M A I N

PROPULSION MOTORS CONTENTS

I

TABLE OF CONTENTS

Pane _I T a b .. P a r a g r a p h

P A R T 1

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . 0-1

0- 1 0- 2 0- 3 0- 4 0- 5

3- 6 0- 7 0- 8 0- 8- 1 0- 8- 2 0-8-2-1 0-6-2-2 0 -8 -2 -3 0-8-3 0-9

P u r p o s e a n d F u n c t i o n . . . . . . . . . . . . 0-1 L i s t o f Items F u r n i s h e d . . . . . . . . . . . 0-1 C a p a b i l i t i e s . . . . . . . . . . . . . . . . 0-1 Performance C h a r a c t e r i s t i c s . . . . . . . . . 0-2 D i m e n s i o n s . W e i g h t . Volume. C e n t e r of

G r a v i t y . . . . . . . . . . . . . . . . . 0 - 2 Power and U t i l i t y R e q u i r e m e n t s . . . . . . . 0-2 E n v i r o n m e n t a l R e q u i r e m e n t s . . . . . . . . . 0-3 R e c e i v i n g . H a n d l i n g a n d S t o r a g e . . . . . . . 0-3

R e c e i v i n g . . . . . . . . . . . . . . . . 0-3 Hand1 i n g . . . . . . . . . . . . . . . . 0-3

G e n e r a l . . . . . . . . . . . . . . . 0-3 A s s e m b l e d M a c h i n e s . . . . . . . . . 0 - 4 D i s a s s e m b l e d M a c h i n e P a r t s . . . . . 0-4

S t o r a g e . . . . . . . . . . . . . . . . . 0-6 T o o l s and T e s t E q u i p m e n t . . . . . . . . . . 0-8

CHAPTER 1. GENERAL INFORMATION AND SAFETY PRECAUTIONS . . 1-1

1-1 S c o p e . . . . . . . . . . . . . . . . . . . . 1-1 1 - 2 R e f e r e n c e s . . . . . . . . . . . . . . . . . 1-1 1-3 DC Motors . . . . . . . . . . . . . . . . . . 1-1 1- 4 G e n e r a l S a f e t y P r e c a u t i o n s . . . . . . . . . 1-2 1- 5 Summary o f W a r n i n g s / C a u t i o n s . . . . . . . . 1 - 2

CHAPTER 2 . OPERATION . . . . . . . . . . . . . . . . . . . 2-1

2- 1 2-1-1 2-1-2 2- 2 2 -2 -1 2-2-2 2-2-2-1 2-2-2-2 2- 2- 3 2-2-4 2- 2- 5 2-2-6

I n i t i a l S t a r t i n g . . . . . . . . . . . . . . 2 - 1 P re s t a r t I n s p e c t i o n . . . . . . . . . . . 2-1 R u n n i n g No-Load I n s p e c t i o n . . . . . . . 2-3

O p e r a t i n g P r o c e d u r e . . . . . . . . . . . . . 2-4 General . . . . . . . . . . . . . . . . . 2-4 O p e r a t i o n o f DC Motors . . . . . . . . . 2-6

S t a r t i n g DC Motors . . . . . . . . . 2-6 S t o p p i n g DC Motors . . . . . . . . . 2-7

A f t P e d e s t a l O p e r a t i o n . . . . . . . . . 2-7 F o r w a r d Pedes ta l O p e r a t i o n . . . . . . . 2-7 T a c h o m e t e r O p e r a t i o n . . . . . . . . . . . 2-8 Cooler O p e r a t i o n . . . . . . . . . . . . 2-8

M A I N

CONTENTS PROPULSION MOTORS

TABLE OF CONTENTS (CONT’D)

P a r a g r a p h Page T a b .

P A R T l ( C 0 N T ’ D )

CHAPTER 2. OPERATION (CONT’ D >

2-3-7 Water R e g u l a t i n g Valve Operat ion . . . . 2-9 2- 3 I n s t r u m e n t a t i o n O p e r a t i n g Data . . . . . . . 2-11 2-4 O p e r a t i o n a l D i f f i c u l t i e s . . . . . . . . . . 2-14 2-4-1 E x c e s s i v e V i b r a t i o n . . . . . . . . . . 2-14 2-4-2 O v e r h e a t i n g . . . . . . . . . . . . . . 2-14 2-4-3 O t h e r D i f f i c u l t i e s . . . . . . . . . . . 2-14

CHAPTER 3. FUNCTIONAL DESCRIPTION . . . . . . . . . . . . 3-1

3- ’* 3- 2 3-2-1 3-2-2 I

3-2-3 3- 3 3- 4 3-4-1 3- 4- 2 3- 5 3- 6 3- 7 3- 7- 1 3-7-2 3- 7- 3 3-7-4

G e n e r a l S t a t o r

Sta to r Frame and Brush R i g g i n g Main F i e l d Po le . Po le F a c e B a r and

C o i l A s s e m b l y Commutating Pole and F i e l d C o i l Assembly

Rotor B e a r i n g s

A f t P e d e s t a l Forward Pedes t a l

S h a f t G r o u n d i n g B r u s h E n c l o s i n g Covers V e n t i l a t i o n

A i r Coo 1 er Water Regu la t ing Valve F a n s A i r F i l t e r s

3-1 3-2 3-2

3-2 3-2 3-6 3-6 3-6 3-7 3-13 3-14 3-18 3-18 3-18 3-19 3 - 2 1

CHAPTER 4 . PFBVENTIVE & CORRECTIVE MAINTENANCE . . . . . 4-1

4- 1 4-2 4-2-1 4-2-2 4-2-3 4-2-4 4-2-5 4-2-6 4-2-7 4-2-8 4-2-9

G e n e r a l . . . . . . . . . . . . . . . . . . 4-1 P r e v e n t i v e M a i n t e n a n c e . . . . . . . . . . . 4-1

I n s u l a t i o n R e s i s t a n c e . . . . . . . . . 4-1 H i g h - P o t e n t i a l Die lec t r ic T e s t . . . . . 4-7 F i e l d S h o r t e d - T u r n T e s t . . . . . . . . 4-7 Commutator a n d B r u s h e s . . . . . . . . . 4-8 A i r Gaps . . . . . . . . . . . . . . . . 4-9 S t a t o r P a r t s . . . . . . . . . . . . . . 4-9 Rotor P a r t s . . . . . . . . . . . . . . 4-9 C o u p l i n g s . . . . . . . . . . . . . . . 4-9 L u b r i c a t i o n a n d B e a r i n g Wear . . . . . . 4-9

MA I N

PROPULSION MOTORS . CONTENTS - ..

TABLE O F CONTENTS (CONT'D)

P a r a g r a p h Page Tab

PART 1 (CONT'D) . . . . . . . . . . . . . . . . . . . . . . . . - 1

I CHAPTER 4 . PREVENTIVE & CORRECTIVE MAINTENANCE (CONT' D )

4-2-9-1 4-2-9-2 4-2-10

4-2- 10-1 4-2-10-2 4-2-11 4-2-11-1 4-2-11-2 4-2-11- 3 4-2-11-4 4-2-11-5 4-2-11-6 4-2-12 4-2-13 4-2-14 4-2-15 4-2-16 0 4- 3 4-3-1 4-3-1-1 4-3-1-2 4-3-1-3 4-3-1-4 4-3-1-5 4- 3- 1- 6 4-3-2 4- 3- 3 4-3-3-1 4-3-3-2 4- 3-4 4-3-5 4- 3- 5- 1 4- 3- 5- 2 4-3-5-2-1 4- 3- 5-2-2 4- 3- 5-2- 3 4-3-5-2-4 4-3-5-2-5 4-3-5-2-6

A d d i t i o n a l A f t Pedes ta l C h e c k s . . .

A d d i t i o n a l Forward Pedes ta l C h e c k s .

B r u s h e s B e a r i n g I n s u l a t i o n S h a f t G r o u n d i n g B r u s h e s

A i r Cooler D r a i n s a n d V e n t s Z i n c A n o d e s C l e a n i n g Water B o x e s C o n d e n s a t i o n O t h e r

Water R e g u l a t i n g Valve F a n s F i l t e r s V i b r a t i o n Motors Out of Se rv ice

Correct ive Maintenance C l e a n i n g

G e n e r a l Vacuum C l e a n i n g Conpressed-Air C l e a n i n g C l e a n i n g w i t h Water a n d D e t e r g e n t .

C l e a n i n g w i t h S o l v e n t R e v a r n i s h i n g W i n d i n g s

I n s u l a t i o n D r y i n g AC Voltage T e s t i n g DC Voltage T e s t i n g

C o m m u t a t i o n A d j u s t m e n t Commutator M a i n t e n a n c e

F l a s h o v e r Damage Commutator R e s u r f a c i n g

P o l i s h i n g S t o n i n g G r i n d i n g T u r n i n g U n d e r c u t t i n g R a k i n g a n d C h a m f e r i n g S l o t s . .

B e a r i n g I n s u l a t i o n ; S h a f t G r o u n d i n g

H i g h - P o t e n t i a l Die lec t r ic T e s t

4-10 4-10

4-12 4-12 4-12 4-15 4-15 4-16 4-16 4-16 4-16 4-17 4-18 4-18 4-18 4-19 4-19 4-19 4-19 4-19 4-20 4-21 4-21 4-22 4-22 4-23 4-24 4-25 4-26 4-27 4-34 4-34 4-36 4-36 4-37 4-37 4-38 4-38 4-39

MA I N

TABLE O F CONTENTS (CONT'D)

P a r a g r a p h Page - T a b .

PART 1 (CONT'D)

CHAPTER 4. PREVENTIVE & CORRECTIVE MAINTENANCE (CONT'D)

4-3-5-3 4-3-6 4-3-7 4-3-8 4-3-9 4-3-9-1 4-3-9-2 4-3-9-3 4-3-9-4

C l e a n i n g t h e Commutator . . . . . . . 4 -41 M e c h a n i c a l B a l a n c e . . . . . . . . . . . 4-41 A f t Pedest a1 . . . . . . . . . . . . . . 4-42 Forward Pedestal . . . . . . . . . . . . 4-42

C l e a n i n g . . . . . . . . . . . . . . 4-42 B u n d l e Removal . . . . . . . . . . . 4-43 L o c a t i n g L e a k s . . . . . . . . . . . 4-44 Cooler R e a s s e m b l y . . . . . . . . . . 4-44

A i r Cooler . . . . . . . . . . . . . . 4-42

CHAPTER 5 . TROUBLESHOOTING . . . . . . . . . . . . . . . . 5-1

CHAPTER 6 . PARTS L I S T . . . . . . . . . . . . . . . . . . 6-1

CHAPTER 7 . INSTALLATION . . . . . . . . . . . . . . . . . 7 - 1

7- 1 7-2 7- 3 7- 4 7-4-1 7-4-2 7-4-3 7-4-4 7-4-4-1 7-4-4-2 7-4-4-3 7-4-4-4 7-4-5

7-4-5-1 7-4-5-1-1 7-4-5- 1-2 7-4-5-1-3

7-4-5-1-4

7-4-5-2 7-4-5-2- 1 7-4- 5- 2- 2

C l e a n l i n e s s . . . . . . . . . . . . . . . . . 7 - 1 V e n t i l a t i o n . . . . . . . . . . . . . . . . . 7 - 1 B a s e . F o u n d a t i o n and Foundat ion B o l t s . . . . 7-2 Motor A s s e m b l y . A l i g n m e n t a n d A d j u s t m e n t . . 7-3

G e n e r a l . . . . . . . . . . . . . . . . . 7-3 H a n d l i n g . . . . . . . . . . . . . . . . 7-4 M o t o r / B a s e I n i t i a l L o c a t i o n i n t h e S h i p . 7-4 U n p a c k i n g . . . . . . . . . . . . . . . . 7-4

G e n e r a l . . . . . . . . . . . . . . . 7-4 B e a r i n g J o u r n a l s . . . . . . . . . . 7-4 B e a r i n g Pedes ta l s . . . . . . . . . . 7-4 F a n s . . . . . . . . . . . . . . . . 7-5

7- F; S h a f t B a s e / C o u p l i n g A l i g n m e n t t o P r o p e l l e r

B a s e A d j u s t m e n t . . . . . . . . . . . 7-5 Ob j ec t i v e . . . . . . . . . . . . 7-5 P r o c e d u r e i n Motor F a c t o r y . . . 7-5 P r o c e d u r e When I n s t a l l i n g Motor i n S h i p . . . . . . . . . . . 7-7 L e v e l i n g ( t o produce t h e s t r a i g h t . s l a n t e d base l i n e s ) 7-8 C o u p l i n g A l i g n m e n t . . . . . . . . . 7-8

General . . . . . . . . . . . . . 7-8 S o l i d C o u p l i n g s . . . . . . . . . 7-9

!VIA I N

PROPULSION MOTORS CONTENTS ..

TABLE O F CONTENTS (CONT'D)

Page T a b . P a r a g r a p h

P A R T l ( C 0 N T ' D ) . . . . . . . . . . . . . . . . . . . . . . . . . . I

CHAPTER 7 . INSTALLATION (CONT'D)

7-4-6 7-4-6-1 7-4-6-2 7-4-6- 3 7-4-6-4 7-4-6-5 7-4-6-6 7-4-6-7 7- 5 7-6 7- 7 7-8 7- 9 7- 9- 1 7- 9- 2 7-10 7-10-1

7-11 7-12

B r u s h R i g g i n g A d j u s t m e n t s B r u s h e s B r u s h R i g g i n g M o u n t i n g t h e B r u s h R i g g i n g B r u s h P o s i t i o n B r u s h S p a c i n g B r u s h A l i g n m e n t Brush-Holder C l e a r a n c e

S h a f t G r o u n d B r u s h A s s e m b l y B e a r i n g T e m p e r a t u r e R e l a y Access C o v e r P r e c u a t i o n s E l e c t r i c a l C o n n e c t i o n s

G e n e r a l G r o u n d i n g

T a c h o m e t e r M e c h a n i c a l C h e c k s A u x i l i a r y D r i v e

S e p a r a t e R o t o r s S e p a r a t e S t a t o r s

O i l P i p i n g . A f t P e d e s t a l

7-11 7-11 7-12 7-13 7-14 7-17 7-18 7-18 7-18 7-19 7-20 7-20 7-21 7-21 7-22 7-23 7-23 7-23 7-23

CHAPTER 8 . BACKUP DOCUMENTATION . . . . . . . . . . . . . 8-1 I

8- 1 S u p p l e m e n t a r y I n s t r u c t i o n s . . . . . . . . . 8-1 8- 2 T e s t R e p o r t f o r S / N NA-2-91 . . . . . . . . . 8-2 8- 3 D r a w i n g s . . . . . . . . . . . . . . . . . . 8-2 h1A I N

PROPULSION MOTORS CONTENTS . ..

TABLE OF CONTENTS (CONT'D)

F i g . No . - . ~ L I S T OF TEXT ILLUSTRATIONS P a g e Tab

PART 1 (CONT'D)

I INTRODUCTION

0- 1 Lay-down o f a t y p i c a l r o t o r . s h o w i n g u s e o f s u p p o r t i n g s t a n d s . . . . . . . . . . . . . . . 0-5

CHAPTER 1. GENERAL INFORMATION AND SAFETY PRECAUTIONS

1-1 T y p i c a l d-c motor. s i n g l e armature . c u t - a w a y v i e w . . . . . . . . . . . . . . . . . . . . . 1-1

CHAPTER 3. FUNCTIONAL DESCRIPTION

3- 1

3- 2

3-2A

3- 2B

0 3- 2 c

3-2D 3-2E 3 -2F 3- 2G 3-2H 3-3

3- 4 3- 5 3- 6 3- 7 3- 8 3- 9 3- 9 A 3-10 3-11 3 - 1 2

3-13 3- 1 4 3-15

A s s e m b l e d p r o p u l s i o n m o t o r o n b a s e .

A s s e m b l e d p r o p u l s i o n motor on b a s e .

A s s e m b l e d p r o p u l s i o n motor o n b a s e .

B r u s h r i g g i n g a n d c o m m u t a t o r w i t h a f t - s t a r b o a r d s i d e v i e w a f t - p o r t s i d e v i e w f o r w a r d - s t a r b o a r d s i d e v i e w e n c l o s i n g c o v e r E r e m o v e d t o p r o v i d e access f r o m t h e s t a r b o a r d s i d e e n c l o s i n g c o v e r E r e m o v e d t o p r o v i d e access from t h e po r t s i d e

Rotor A f t t h r u s t p e d e s t a l . v i e w f r o m a f t e n d A f t t h r u s t p e d e s t a l . v i e w from fwd e n d A f t p e d e s t a l a s s e m b l y . p o r t s i d e A f t p e d e s t a l a s s e m b l y . s t a r b o a r d s i d e Fwd b e a r i n g p e d e s t a l . lower h a l f . w i t h lower h a l f o f j o u r n a l b e a r i n g Fwd b e a r i n g p e d e s t a l . u p p e r h a l f ( c a p ) F o r w a r d b e a r i n g . o u t e r s h e l l F o r w a r d b e a r i n g - sec t iona l v i e w F o r w a r d b e a r i n g . u p p e r h a l f F o r w a r d b e a r i n g p e d e s t a l a n d t a c h o m e t e r C o v e r a s s e m b l y S p a c e h e a t e r s m o u n t e d i n E n c l o s u r e A a n d F A i r f i l t e r A i r f i l t e r e n c l o s u r e M a i n t e r m i n a l b o x w i t h f r o n t c o v e r r e m o v e d . a t t a c h e d t o E n c l o s u r e E D o u b l e t u b e a i r cooler S u p p o r t p l a t e w i t h a i r c o o l e r a n d f a n s P r o p u l s i o n motor b a s e

B r u s h r i g g i n g a n d c o m m u t a t o r w i t h

3-0

3 -0

3 -0

3-3

3-3 3-3 3-4 3-4 3-5 3 -5

3-7 3-8 3 - 1 0 3-11 3-12 3 - 1 2 3-15 3-16 3-17 3-17

3-18 3-20 3 - 2 0 3 - 2 1

MAIN

TABLE OF CONTENTS ( CONT ' D )

LIST OF TEXT ILLUSTRATIONS (CONT'D)

Fig. No.

PART 1 (CONT'D)

CHAPTER 4, PREVENTIVE AND CORRECTIVE MAINTENANCE

4-1

4-2

4- 3 4-4a 4-4b 4- 5

4-6

4-7 4- 8

Approximate conversion factor f o r insulation resistance

Nominal insulation resistance of complete d-c armature

Schematic diagram of connections Improvised probes Spacing device Typical brush-potential curves

(generating mode) . , , Typical brush-potential curves

(motoring mode) Sanding block Errors to avoid when undercutting commutators . .

CHAPTER 7 , INSTALLATION

'7- 1 7- 2 7-3 7-4 7- 5 7- 6 7- 7 7- 8 7- 9 7-10 7 -11 7-12 7-13 7-14

Page - Tab

Example: Factory measurements on S/N 7535412 . .

Constant-pressure brush-holder . . . . . . . , .

Brush rigging assembly Brush position adjustment on yoke Grounding brush assembly Journal bearing, shaft and thrust collar Floating seal rings Shim plates Aft shim plate assembly . . . . . . . . . , . . .

Thrust bearing mounted on retaining ring Forward shim plate Assembly of lower thrust bearing, aft end . . . , Aft thrust bearing assembly Completed installation of bearings

LIST OF TABLES

Table No.

4-4

4-6 4-30 4-30 4:- 3 1

4-32

4-32 4-36 4-40

7-6 7-13 7-15 7-16 7-19 7-25 7-25 7-25 7- 26 7- 26 7-26 7- 26 7-27 7-27

Page

CHAPTER 4 , PREVENTIVE AND CORRECTIVE MAINTENANCE

4- 1 Typical characteristics of bearing lubrication oil . . . . . . , . . . . . . . . . . . . . . . 4-11

CHAPTER 7, INSTALLATION

7- 1 DC main and commutating field pole bolt-tightening torque . . . . . . . . . . . . . . . 7-24

I

BOW

THRUSTER MOTOR CONTENTS

TABLE OF CONTENTS (CONT'D)

. Page T a b -. P a r a g r a p h

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . P A R T 2 2

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . 0-1

0- 1 0- 2 0-3 0-4

0-5

0- 6 0-6-1 0-6-2 0- 7 0- s 0-9 0-10

Purpose and F u n c t i o n . . . . . . . . . . . . 0-1 Cap a b i 1 i t i es . . . . . . . . . . . . . . . . 0-1 P e r f o r m a n c e C h a r a c t e r i s t i c s . . . . . . . . . 0-1 D i m e n s i o n s . W e i g h t . Volume. a n d C e n t e r of

G r a v i t y . . . . . . . . . . . . . . . . . 0-1 Power and U t i l i t y R e q u i r e m e n t s f o r One

T h r u s t e r Motor . . . . . . . . . . . . . . 0-1 E n v i r o n m e n t R e q u i r e m e n t s . . . . . . . . . . 0-2

V e n t i l a t i o n . . . . . . . . . . . . . . . 0-2 P r o t e c t i o n . . . . . . . . . . . . . . . 0-2

L i s t of Items F u r n i s h e d . . . . . . . . . . . 0-3 L i s t of I t e m s ( i n c l u d i n g c a b l i n g ) Requ i red . 0-3 Storage Data . . . . . . . . . . . . . . . . 0-3 T o o l s a n d T e s t E q u i p m e n t . . . . . . . . . . 0-4

CFAPTER 1. GENERAL INFORMATION AND SAFETY PRECAUTIONS . . 1-1

1-1 1-1-1 1-1 -2 1-1-2-1 1-1-3 1-1-4 1-1-5 1- 2 1-3

G e n e r a l I n f o r m a t i o n . . . . . . . . . . . . . 1-1 Heat E x c h a n g e r . . . . . . . . . . . . . 1-1 T h e r m o m e t e r and A l a r m S w i t c h . . . . . . 1-1

A i r S e n s i n g B u l b . . . . . . . . . . 1-1 S p a c e Heaters . . . . . . . . . . . . . . 1 - 2 B l o w e r Motor . . . . . . . . . . . . . . 1 - 2 T a c h o m e t e r . . . . . . . . . . . . . . . 1-2

S a f e t y Summary . . . . . . . . . . . . . . . 1-2 Summary o f WARNINGS/CAUTIONS . . . . . . . . 1-3

CHAPTER 2 . OPERATION . . . . . . . . . . . . . . . . . . . 2-1

2 - 1 3- 2 2-2-1 2-2-2 2-2-3 2-2-4 2-2-5 2-2-6 2-2-7 2-2-8 2-2-9

I n i t i a l S t a r t i n g . . . . . . . . . . . . . . 2 - 1 I n s p e c t i o n B e f o r e S t a r t i n g . . . . . . . . . 2-1

B e a r i n g s and C o u p l i n g s . . . . . . . . . 2 - 1 I n s u l a t i o n . . . . . . . . . . . . . . . 2 - 1 Commutator a n d B r u s h e s . . . . . . . . . 2 - 1 C o n n e c t i o n s . . . . . . . . . . . . . . . 2-2 P r o t e c t i v e Dev ices . . . . . . . . . . . 2-2 S p a c e Heaters . . . . . . . . . . . . . . 2-2 V e n t i l a t i o n S y s t e m . . . . . . . . . . . 2-2 General M e c h a n i c a l I n s p e c t i o n . . . . . . 2-2 T i g h t e n i n g B o l t e d J o i n t s . . . . . . . . 2-3

THRUSTER MOTOR ..- CONTENTS

TABLE OF CONTENTS (CONT'D)

P a r a g r a p h Page

PART 2 ( C O N T ' D )

I

CHAPTER 2 . OPERATION (CONT' D )

2-3 I n s p e c t i o n A f t e r S t a r t i n g . . . . . . . . . 2-4 2- 3- 1 B e a r i n g s . . . . . . . . . . . . . . . . 2-4

2-4 B e f o r e P u t t i n g Machine i n S e r v i c e . . . . . 2-6 2-5 I n s p e c t i o n A f t e r S h o r t T ime i n S e r v i c e . . . 2-6

2- 3- 2 Noise and V i b r a t i o n . . . . . . . . . . 2-4

CHAPTER 3 . FUNCTIONAL DESCRIPTION . . . . . . . . . . . . 3-1

3- 1 General . . . . . . . . . . . . . . . . . . 3-1

CHAPTER 4 . SCHEDULED AND CORRECTIVE MAINTENANCE . . . . . 4-1

4-1 Schedu led M a i n t e n a n c e . . . . . . . . . . . 4-1 . 4-1-1 M a i n t e n a n c e . . . . . . . . . . . . . . 4-1

4-1-2 S u g g e s t e d M a i n t e n a n c e Schedu le . . . . . 4-2 4-1-3 M a i n t e n a n c e P r o c e d u r e s . . . . . . . . . 4-5 4-1-3-1 R e p a i r . . . . . . . . . . . . . . . 4-5 4-1-4 L u b r i c a t i o n . . . . . . . . . . . . . . 4-5

4-1-5 Blower Motor M a i n t e n a n c e . . . . . . . . 4-7 4-1-5-1 I n s p e c t i o n . . . . . . . . . . . . . . 4-7

4-. 7 4-1-5-2 L u b r i c a t i o n 4-1-5-3 Mo t o r W i n d i n g s . . . . . . . . . . . 4-8 4-2 C o n e ct i v e Main t e n ance . . . . . . . . . . . 4-8 4-2-1 F a i l u r e . . . . . . . . . . . . . . . . 4-8 4-2-2 Armature Removal . . . . . . . . . . . . 4-9

Machine w i t h S o l i d Frame . . . . 4-9 4- 2- 3 Armature I n s t a l l a t i o n . . . . . . . . . 4-11 4-2-4 Brush M a i n t e n a n c e . . . . . . . . . . . 4-11 4-2-5 Commutation Adjustment . . . . . . . . . 4-13 4-2-6 Commutator M a i n t e n a n c e . . . . . . . . . 4-14

Sand ing . . . . . . . . . . . . . 4-14 4-2-6-2 Commutator F i lm Care . . . . . . . . 4-17

Method . . . . . . . . . . . . . 4-17 4-2-6- 3- 1 P r o c e d u r e . . . . . . . . . . . 4-15

4-1-1-1 P r o d u c t i v e Maintenance . . . . . . . 4-1

4-1-4-1 B a l l and R o l l e r - B e a r i n g R e l u b r i c a t i o n 4-5 4-1-4-2 L u b r i c a t i o n of F l e x i b l e Coupl ings . 4-7

4-2-2-1 Method of Armature Removal f o r

4-2-6-1 Commutator T u r n i n g , S t o n i n g , and

4-2-6-3 Commutator Clean-up by Air-Cure

Tab

I

I

I

I

THRUSTER MOTOR CONTENTS

TABLE OF CONTENTS (CONT'D)

Page T a b

_II_

P a r a g r a p h

PART 2 (CONT'D)

CHAPTER 4 . SCHEDULED AND CORRECTIVE MAINTENANCE (CONT' D )

4-2-7 4-2-7-1 4-2- 7- 1- 1 4-2-7-1-2

4-2-8 4-2-9

4-2-9-1 4- 2- 9- 2 4- 2- 9- 3 4-2-10 4- 3 4-3-1 4-3-2 4-3-2-1

4-3-2-2

4-3-2-3

4-3-2-4 4-4 4-4-1 4-4-2 4-4-2-1 4-4-2-2

I n s u l a t i o n T e s t i n g M e t h o d s

V i s u a l I n s p e c t i o n I n s u l a t i o n - R e s i s t a n c e

M e a s u r e m e n t C l e a n i n g of W i n d i n g s F i e l d S e r v i c e C l e a n i n g (Assembled

M a c h i n e s ) D r y D u s t s O i l y D i r t D r y i n g of W i n d i n g s

S e r v i c e S h o p C l e a n i n g B e a r i n g Removal a n d R e p l a c e m e n t

Procedure C o m p l e t e Motor D i s a s s e m b l y

B e a r i n g Removal B e a r i n g B r a c k e t and B e a r i n g . . .

C o m m u t a t o r E n d B e a r i n g B r a c k e t a n d

R e a s s e m b l y of t h e C o m m u t a t o r E n d

Dr ive E n d B e a r i n g B r a c k e t a n d

Dr ive End B e a r i n g R e a s s e m b l y B e a r i n g Removal

Heat E x c h a n g e r P e r i o d i c I n s p e c t i o n

C l e a n i n g M a i n t e n a n c e

Removal of C o m p l e t e Air-to-Water C o o l e r from M a c h i n e

4-18 4-19 4 - 1 9

4-19 4 - 2 1

4 - 2 2 4 -22 4 -24 4 - 2 5 4 - 2 5 4 - 2 5 4 - 2 6 4 - 2 8

4 - 2 8

4 -29

4-30 4-33 4-33 4-33 4-33 4-33

4-34

CHAPTER 5. TROUBLESHOOTING . . . . . . . . . . . . . . . 5-1

5- 1 T r o u b l e s h o o t i n g Guide . . . . . . . . . . . 5-1

CHAPTER 6 . PARTS L I S T . . . . . . . . . . . . . . . . . . 6-1

6-1 Items of M a i n t e n a n c e S i g n i f i c a n c e . . . . . 6-1

CONTENTS

TABLE OF CONTENTS (CONT'D)

Paragraph

PART 2 (CONT'D)

CHAPTER 7, INSTALLATION

7-l 7-l-l 7-l-2 7-l-3 7-2 7-2-l 7-2-2 7-2-3 7-2-4 7-2-5 7-2-6 7-3 7-4 7-4-l 7-4-l-l

Receiving, Handling, Storage Receiving Handling .

Storage

Install at ion .

Locations Ventilation Protection Mounting . .

Alignment Coupled Drive

Heat Exchanger . .

Blower Motor . . .

Blower Motor Installation Power Supply and Connections

CHAPTER 8, BACKUP DOCUMENTATION

8-1 8-2

List of Drawings .

List of Publications

BOW

THRUSTER. MOTOR.

7-1

7-l 7-1 7-1 7-2 7-3 7-3 7-4 7-4 7-4 7-4 7-4 7-5 7-5 7-5 7-5

8-1

8-1 8-1

Tab e

' 0

BOW

THRUSTER MOTOR CONTENTS

TABLE O F CONTENTS (CONT'D)

L I S T O F TEXT ILLUSTRATIONS

F i g . No. Page - T a b

PART 2 (CONT'D). . . . . . . . . . . . . . . , . . . . . . . . , 2

CHAPTER 4 , SCHEDULED AND CORRECTIVE MAINTENANCE

4-1 T y p i c a l c r o s s - s e c t i o n v iew of CD motor o r g e n e r a t o r . . . . . . . . . . . . . . 4-10

4-2 T y p i c a l a i r n o z z l e f o r c l e a n i n g m a c h i n e s . . 4-23 4-3 S k e t c h DC644. . . . . . . . . . . . . . . . . 4-31 4-4 S k e t c h DC644-1. . . . . . . . . . . . . . . 4-32 4- 5 Heat E x c h a n g e r . . . . . . . . . . . . . . . 4-35

T a b l e N o . -

CHAPTER 2 , OPERATION

L I S T OF TABLES

Page

2- 1 B o l t t i g h t e n i n g t o r q u e v a l v e s - meta l l i c

2-2 B o l t t i g h t e n i n g t o rque v a l v e s - non-p a r t s . . . . . . . . . . . . . . . . . 2-5 m e t a l l i c p a r t s t o me ta l l i c p a r t s 2-5

CHAPTER 4 , SCHEDULED AND CORRECTIVE MAINTENANCE

4-1 Recommended r e g r e a s i n g pe r iods . . . . . . 4-6 4-2 B e a r i n g greases . . . . . . . . . . . . . . 4-7 4- 3 Recommended commutator c o n d i t i o n i n g

4-4 E f f e c t of t e m p e r a t u r e o n i n s u l a t i o n p rocedure . . . . . . . . . . . . . . . . 4-15 r e s i s t a n c e , , . . . . . . . . . . . . . 4 - 2 1

CHAPTER 7 , INSTALLATION

7-1 Approximate w e i g h t . . . . . . . . , . . . . 7-1

13 /14 a

SHIPS

SERVICE TRANSFORMERS CONTENTS

TABLE OF CONTENTS (CONT'D)

Pa rag raph Page T a b ..

P A R T 3

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . 0-1

0- 1 0-2 0-3 0-4

0-5 0-6 0- 7 0- 8 0-9 0- 10

Purpose and F u n c t i o n . . . . . . . . . . . . 0-1 C a p a b i l i t i e s . . . . . . . . . . . . . . . . 0-1 P e r f o r m a n c e C h a r a c t e r i s t i c s . . . . . . . . . 0-1 D i m e n s i o n s . Weight . Volume. a n d C e n t e r of

G r a v i t y . . . . . . . . . . . . . . . . . 0-1 Power U t i l i t y R e q u i r e m e n t s . . . . . . . . . 0-1 E n v i r o n m e n t a l R e q u i r e m e n t s . . . . . . . . . 0-1 L i s t of Items F u r n i s h e d . . . . . . . . . . . 0-2 L i s t of Items ( i n c l u d i n g c a b l i n g ) R e q u i r e d . 0-2 S torage Data . . . . . . . . . . . . . . . . 0-2 Tools a n d T e s t E q u i p m e n t . . . . . . . . . . 0-2

CHAPTER 1. GENERAL INFORMATION AND SAFETY PRECAUTIONS . . 1-1

1- 1 G e n e r a l I n f o r m a t i o n . . . . . . . . . . . . . 1-1 1-2 O v e r l o a d C a p a b i l i t i e s . . . . . . . . . . . . 1-1 1-3 S a f e t y P r e c a u t i o n s . . . . . . . . . . . . . 1-2

CHAPTER 2 . OPERATION . . . . . . . . . . . . . . . . . . . . 2-1

2-1 Removal of C o v e r s o v e r O p e n i n g s . . . . . . . 2-1 2-2 E f f e c t of H u m i d i t y . . . . . . . . . . . . . . . 2-1

CHAPTER 3. FUNCTIONAL DESCRIPTION . . . . . . . . . . . . 3-1

3- 1 D e s c r i p t i o n . . . . . . . . . . . . . . . . . 3-1

CHAPTER 4 . SCHEDULED AND CORRECTIVE MAINTENANCE . . . . . 4-1

4-1 G e n e r a l . . . . . . . . . . . . . . . . . . . 4-1

CHAPTER 5. TROUBLESHOOTING . . . . . . . . . . . . . . . . 5-1

N o t Appl i c able

CHAPTER 6 . PARTS L I S T . . . . . . . . . . . . . . . . . . 6-1

6-1 R e n e w a l P a r t s . . . . . . . . . . . . . . . . . 6-1

SHIPS

CONTENTS SERVICE TRANSFORMERS

I TABLE OF CONTENTS (CONT' D)

P a r a g r a p h - - Page T a b

, PART 3 (CONT'D) 3

CHAPTER 7 , INSTALLATION . . . . . . . . . . . . . . . . . 7-1

7- 1 R e c e i v i n g . . . . . . . . . . . . . . . . . 7-1 7- 2 H a n d l i n g . . . . . . . . . . . . . . . . . . 7-1 7- 3 P r e p a r a t i o n . . . . . . . . . . . . . . . . 7-1 7-4 M o u n t i n g . . . . . . . . . . . . . . . . . . 7-1 7- 5 C o n n e c t i o n s . . . . . . . . . . . . . . . . 7-2

I CHAPTER 8 , BACKUP DOCUMENTATION . . . . . . . . . . . . . 8-1

8-1 L i s t of D r a w i n g s . . . . . . . . . . . . . . 8-1

8- 2 L i s t o f P u b l i c a t i o n s . . . . . . . . . . . . 8-1

LIST OF TABLES

T a b l e No. P a g e

CEAPTER 1, GENERAL INFORMATION AND SAFETY PRECAUTIONS

1-1 P e r m i s s i b l e o n c e - d a i l y o v e r l o a d s w i t h n o r m a l l i f e m a i n t a i n e d . . . . . . . . . 1-1

PART I

INTRODUCTION

800 HP DC PROPULSION MOTOR

Page 0-1 3 6H9 2630 1

0-1 PURPOSE AND FUNCTION: Ship p ropu l s ion ; two 800 H p DC motors pe r s h i p .

0-2 LIST OF ITEMS FURNISHED:

Motor S e r i a l Nos. NA-2-91 0A-2-45 6 To ta l

RA-2-58

RA-2-59

Model No. 42G972

Rat ing . . . . . . . . . . . . . . . . . . 800HP-185RPM-750V-89OA

Manufac turer ' s Type . . . . . . . . . . . . . . . . . . . CY872

Number of Main Po le s

Number of Commutating Poles

The motors a r e d i r e c t c u r r e n t mo to r s , shunt wound, s e p a r a t e l y e x c i t e d , t o t a l l y enc losed , w a t e r - t i g h t t o bottom of s h a f t opening , d r i p p r o o f above, with s a l t water t o a i r h e a t exchan e r , i n t e g r a l f a n s , d i spos-a b l e a i r f i l t e r s , Class F i n s u l a t i o n , 85 C r ise over 5OoC ambient c l a s s i f i c a t i o n , each c o n s i s t i n g of t h e fo l lowing p r i n c i p a l components and a c c e s s o r i e s (on a per motor b a s i s ) :

go

1 - 1 - 1 - 2 - 2 - 1 - 1 -

1 - 1 - 1 -r o t o r ( i n c l u d i n g commutator and s h a f t ) s t a t o r wi th brush r i g g i n g set of enc los ing covers a i r c i r c u l a t i n g a i r f ans a i r f i l t e r s water t o a i r h e a t exchanger BC-46 tachometer gene ra to r w i t h cogged f l a t b e l t w i th enc losu re set of space h e a t e r s , forward (commutator) end se t of space h e a t e r s , a f t ( coup l ing ) end water r e g u l a t i n g va lve

0-3 CAPABILITIES:

Horsepower a t r a t e d speed Speed. . . . . . . . . . . . . . . . . . . . . . .lo-185 EPM continuous Armature c i r c u i t vo l t age : 750V maximum Armature c i r c u i t c u r r e n t : 890A continuous Shunt f i e l d c u r r e n t , amperes f i e l d , f u l l l o a d , AFFL, a s determined by continuous o p e r a t i o n a t 185RPM-750V-890A: (See nameplate f o r each i n d i v i d u a l motor; nominal va lue i s 69.7 amperes)

Maximum Ambient tempera ture a ) External t o Motor . . . . . . . . . . . . . . . . . . . 50C b ) I n t e r n a l (Cooler " A i r Out") . . . . . . . . . . . . . . 50C

I Page 0-2 368926301

0-3 CAPABILITIES : (Cont ' d )

C las s of Ins u l a t i on

S t a t o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . F R o t o r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F

Temperature Rise

85C Rise C l a s s i f i c a t i o n Above a 50C Ambient Rise, I n s u l a t e d Windings, by Thermometer. . . . . . . . 85C Rise, Bare Windings, by Thermometer . . . . . . . . . . l O O C Rise, Shunt F i e l d , by Res is tance . . . . . . . . . . . .12OC Rise, Commutator, by Thermometer. . . . . . . . . . . . 95C

Rota t ion . . . . . . . . . . .Revers ib le CW o r CCW Facing t h e Commutator Main Pole A i r Gap (Nominal) . . . . . . . . . . . . . . . . . .0.235 i n .

Commutating Pole A i r Gap (Nominal). . . . . . . . . . . . . . .0.408 i n .

Non-Magnetic Shims Between Commutating Poles and S t a t o r Frame, S/N NA-2-91 0.XXX i n .

OA-2-4 5

RA-2-58

RA-2-59

I 0-4 PERFORMANCE CHARACTERISTICS: Refer t o t h e t e s t r e p o r t f o r S/N

NA-2-91 l o c a t e d in Chapter 8. Tests were made per Test I n s t r u c t i o n s

36A170782AA.

0-5 DIMENSIONS, WEIGHT, VOLUME, CENTER OF GRAVITY: Refer t o O u t l i n e dwg. 36D816075AAJ s h e e t 1-2.

0-6 POWER AND UTILITY REQUIREMENTS

Armature c i r c u i t DC c u r r e n t w i t h RMS r i p p l e n o t t o exceed 6% when t h e motor i s us ing 890 amperes, 750V a t a speed of 185 rpn .

Shunt f i e l d c u r r e n t (DC) 71.5 amperes a t f u l l load (Actual f i e l d cur-r e n t r e q u i r e d f o r each motor a t full load w i l l be found on each motor nameplate 1.

Space h e a t e r s . See n o t e 13 of Notes f o r O u t l i n e dwg. 36Al70725AA (3.78KW-440V-3 phase) .

Page 0-3 I 3 6H92630 1

0-6 POWER AND UTILITY REQUIREMENTS (Con t ' d )

I n t e r i o r l i g h t s , (2) 100 watt-120V-10-60HZ.

L u b r i c a t i n g o i l . Refer t o n o t e 11 of Notes f o r O u t l i n e dwg.

36A170725AA.

c o o l i n g wa te r . Refer t o n o t e 10 of Notes f o r O u t l i n e dwg.

36A170725AA.

0-7 ENVIRONMENTAL REQUIREMErJrS

1. Clean, non-contaminated a i r , between 1 O C and 50C, e x t e r n a l t o t h e motor.

0 2 . The motor i s designed t o o p e r a t e i n an i n c l i n e d p o s i t i o n of 5 r a k e , bow up , under t h e p i t c h and r o l l cond i t ions s p e c i f i e d by ABS Rules.

0-8 R E C E I V I N G , HANDLING AND STORAGE

0-8-1 Receiving

The equipment should be p laced under adequate p r o t e c t i o n immediately upon r e c e i p t . Equipment which i s no t t o be i n s t a l l e d immediately upon r e c e i p t should b e s t o r e d i n a d r y , c l e a n l o c a t i o n .

I f any components a r e c r a t e d f o r long t e r m s t o r a g e they m u s t , be t r e a t e d i n accordance wi th t h e sh ipp ing l a b e l t e x t .

Upon a r r i v a l , each shipment should be c a r e f u l l y examined f o r handl ing damage t o both machine and e n c l o s u r e . Check f o r I evidence of mois ture and damage due t o r o d e n t s . Any damage should be r epor t ed promptly t o t h e c a r r i e r and t o t h e n e a r e s t o f f i c e of t he General E l e c t r i c Company.

0-8-2 Handling

0-8-2-1 General

Machine p a r t s should be handled c a r e f u l l y by person-n e l exper ienced i n l i f t i n g and moving heavy equip-ment. L i f t i n g s l i n g s should be i n good c o n d i t i o n and be padded where c o n t a c t i s made wi th f i n i s h e d machine s u r f a c e s . A sp reade r bar should be used where t h e l i f t i n g c a b l e s might o therwise c rush t h e t o p edge of a p a r t o r packing c a s e .

P a r t s should be l e v e l when l i f t e d . I n some c a s e s , t h e l i f t i n g device ( e y e b o l t , l u g , e t c . ) cannot be l o c a t e d d i r e c t l y above o r on l i n e wi th t h e c e n t e r of g r a v i t y , and a u x i l i a r y s l i n g s w i l l be r e q u i r e d t o l e v e l t h e load .

Page 0-4 36H92630 1

0-8 R E C E I V I N G , HANDLING AND STORAGE (Cont 'd)

0-8-2 Handling (Cont ' d )

0-8-2-1 General (Cont 'd)

WARNING:

BEFORE ATTEMPTING TO L I F T ANY MACHINE, CHECK THE

OUTLINE DRAWING (AND NOTE 25 , DWG. 36A170725AA

"NOTES FOR OUTLINE") FOR THE LIFTING POINTS AND

THEIR LIMITATIONS. UNLESS OTHERWISE SPECIFIED ON

THE OUTLINE DRAWING, EYEBOLTS, LUGS, ETC., ARE

INTENDED TO SUPPORT ONLY THE PART TO WHICH THEY

ARE ATTACHED. T h e DEVICES ARE NOT SUITABLE FOR

LIFTING THE TOTAL WEIGHT OF THE ASSEMBLED MACHINE.

FAILURE TO OBSERVE THESE PRECAUTIONS MAY RESULT I N

DAMAGE TO THE EQUIPMENT, INJURY TO PERSONNEL OR

BOTH.

0-8-2-2 Assembled Machines

Assembled u n i t s should be handled i n one piece by a t t a c h i n g a s l i n g ' ( o r s l i n g s ) t o t h e l i f t i n g l u g s on t h e base , a s i n d i c a t e d on t h e P u r c h a s e r ' s o u t l i n e drawing; t h e o u t l i n e drawing w i l l a l s o show t h e p o s i t i o n of t h e l i f t i n g l u g s . ASSEMBLED UNITS

SHOULD NOT BE HANDLED BY ATTACHING SLINGS TO THE

SHAFT, TO THE BEARING PEDESTALS, OR TO THE STATOR

FRAME. Spreaders must be used and t h e s l i n g s should be i n a n e a r l y ver t ical p o s i t i o n . They must n o t c o n t a c t any part: of t h e motor.

0-8-2-3 Disassembled Machine P a r t s

Rotors should be l i f t e d w i t h hemp- o r padded w i r e -rope s l i n g s wrapped around t h e s h a f t on each s i d e of t h e armature.

CAUTION:

SLINGS MUST NEVER BE WRAPPED AROUND CORE BINDING

BANDS, COMMUTATORS OR JOURNALS. A SPREADER BAR OR

BLOCKS SHOULD BE USED TO PREVENT THE SLINGS FROM

BEARING AGAINST THE WINDINGS AND COMMUTATOR.

BLOCKS, I F USED. MUST BEAR ON THE ROTOR HUB OR

SPIDER, NOT ON THE WINDINGS OR COMMUTATOR.

Page 0-5 3689 2 630 1

0-8 RECEIVING, HANDLING AND STORAGE (Con t ' d )

0-8-2 Handling (Cont d )

0-8-2-3 Disassembled Machine P a r t s (Cont d )

The p r e f e r r e d method of suppor t ing a r o t o r , o t h e r than i n i t s own b e a r i n g s , i s t o use s t a n d s as shown i n F ig . 0-1. Blocks o r heavy timber c r i b b i n g m a y be used i f s t a n d s a r e n o t a v a i l a b l e . Whatever t h e sup-p o r t , p rov i s ions should be made t o prevent t h e r o t o r from r o l l i n g o f f t h e s u p p o r t , and wooden pads should be used on t h e s tee l s t ands t o avoid marks on t h e machined s h a f t s u r f a c e . The bea r ing j o u r n a l s should

- not be used as a l o c a t i o n f o r t h e suppor t s when t h e r o t o r i s set down, and they must be p r o t e c t e d d u r i n g handl ing .

An a l t e r n a t e method of s e t t i n g down a r o t o r i s t o suppor t t h e r o t o r co re with a padded c r a d l e shaped t o conform wi th t h e c u r v a t u r e of t h e c o r e . The l e n g t h of t h e c r a d l e must no t be longe r than t h e i r o n of t h e c o r e , (26 i n . ) and, when suppor t ing a r o t o r , t h e c r a d l e m u s t be c e n t r a l l y pos i t i oned under t h e i r o n co re t o avoid a p p l i c a t i o n of p r e s s u r e t o t h e end connec t ions of t h e a rmature winding. The width must be a t l e a s t o n e - f i f t h of t h e r o t o r d iameter (1 /5 of 35 i n . ) , bu t a g r e a t e r width may be d e s i r a b l e t o prevent t h e r o t o r from r o l l i n g .

F ig . 0-1. Lay-down of a t y p i c a l r o t o r , showing u s e of suppor t ing s t a n d s

Page 0-6 36H92 630 1

I

0-8 R E C E I V I N G , HANDLING AND STORAGE (Cont Id)

0-8-2 Handling (Cont Id)

0-8-2-3 Disassembled Machine Parts (Cont ' d )

A temporary c r a d l e may be improvised by u s i n g two l eng ths of 2 x 4 inch lumber as r a i l s , b r idged w i t h e i t h e r s o f t p ine boards , 3 / 4 i n c h t h i c k , o r plywood, 1 /4 inch t h i c k . The l eng th of the r a i l s and t h e b r idge must not be longe r than t h e l e n g t h of t h e a rmature i r o n co re . The c r a d l e must be padded wi th a least one-half i nch of l o w d e n s i t y f e l t o r s o f t n a t u r a l o r s y n t h e t i c rubber ( s o l i d , n o t foam) o r e q u i v a l e n t . When improvising a c r a d l e , s e l e c t boards or plywood ( m u l t i p l e s h e e t s may be necessa ry ) and a r a i l spac ing which w i l l d e f l e c t under t h e w e i g h t of t he r o t o r t o c l o s e l y conform wi th t h e cur-v a t u r e of t h e r o t o r over a c i r c u m f e r e n t i a l d i s t a n c e of not less than o n e - f i f t h of the r o t o r d iameter .

NOTE: I n no case s h a l l t h e r o t o r be s t o r e d f o r any l e n g t h of t i m e by suppor t ing t h e r o t o r c o r e i n a c r a d l e , s i n c e permanent damage to t h e co re b ind ing bands may r e s u l t . This method s h a l l only be used dur ing handl ing of t h e r o t o r .

Rotors should always be lowered s lowly and c a r e f u l l y i n t o t h e c r a d l e with t h e a x i s of t h e s h a f t p a r a l l e l t o t h e r a i l s of t h e c r a d l e t o avoid damage due t o impact and p o i n t l oad .

S t a t o r s can be s p l i t and handled a s two p a r t s . The t o p h a l f , o r both ha lves bo l t ed t o g e t h e r , may be l i f t e d by t h e l i f t i n g b a r s . The lower h a l f may a l s o be l i f t e d by s l i n g s pass ing under t h e s t a t o r f e e t .

0-8-3 Storage

Equipment which i s not t o be i n s t a l l e d immediately should be s t o r e d under cover i n a d r y , c l e a n l o c a t i o n and p r o t e c t e d from low tempera tures and r a p i d o r extreme v a r i a t i o n s i n tempera-t u r e or humidity. Windings should be p ro tec t ed from r o d e n t s and t e r m i t e s . Before shipment, machined p a r t s such as bear-i n g s and s h a f t s u r f a c e s are covered with a co r ros ion pre-ven t ive compound* t o prevent r u s t i n g . I n a d d i t i o n t o the c o r r o s i o n p reven t ive compound, j o u r n a l s a r e wrapped with paper o r canvas f o r added p r o t e c t i o n when shipped disassembled and t o pack t h e bea r ing c l ea rance when shipped a s an assembled machine. I f t he compound, o r , p a r t i c u l a r l y , t h e e

* For example: Tec ty l 506-Special, Va lvo l ine O i l Co., Freedom, Pa.

Page 0-7 36892630 1

0-8 R E C E I V I N G , HANDLING AND STORAGE (Cont 'd )

0-8-3 Storage (Cont Id)

' 0

' 0 compound and wrapper on j o u r n a l s u r f a c e s , has been d i s t u r b e d du r ing s h i p n e n t , i t should be removed t o g e t h e r with any mois-t u r e o r r u s t , and t h e exposed a r e a recovered wi th compound.

Pa tch ing t h e a r e a with a d d i t i o n a l compound w i l l no t prevent f u r t h e r r u s t i n g u n l e s s a l l t r a c e s of r u s t and moi s tu re have been removed.

Brushes should no t be i n s t a l l e d and allowed t o r e s t on t h e commutator du r ing s t o r a g e . Brushes should be s t o r e d s e p a r a t e l y ; o the rwise , t h e commutator s u r f a c e may be damaged by co r ros ion .

During s t o r a g e i t i s important t h a t t h e machine be p r o t e c t e d from mois tu re and from f r e e z i n g tempera tures by some s a f e and r e l i a b l e method of h e a t i n g . The tempera ture of t h e machine should always be main ta ined a few degrees above t h e dew p o i n t tempera ture of t h e sur rounding a i r t o prevent condensa t ion of water vapor on t h e i n s u l a t i o n and m e t a l l i c p a r t s . Ven t i l a -t i o n p rov i s ions are necessa ry f o r propcr s t o r a g e c o n d i t i o n s .

Use t h e space h e a t e r s i n s t a l l e d i n s i d e t h e motor enc los ing cove r s .

Free c i r c u l a t i o n of a i r i n and around t h e machine i s impor-t a n t t o prevent t r app ing of moi s tu re which i s d e t r i m e n t a l t o machine p a r t s and t o t h e i n s u l a t i o n .

The machines are provided with drop c l o t h s t o cover t h e ma-ch ines ; t h e s e cover ings must be put i n such a manner t h a t they do not r e s t r i c t c i r c u l a t i o n of a i r t o any p a r t of t h e machine.

I t i s recommended t h a t d rop c l o t h s o r t a r p a u l i n e s be used on ly as temporary d u s t covers du r ing such pe r iods as e r e c t i o n and assembly.

Machines i n s t o r a g e should be in spec ted a t f r equen t and p e r i -o d i c i n t e r v a l s . The i n s p e c t i o n should i n c l u d e a check f o r humidi ty o r tempera ture as compared w i t h t h e dew-point t e m -p e r a t u r e , r u s t and c o r r o s i o n , ev idence of a t t a c k by r o d e n t s o r vermin and, a t each i n s p e c t i o n , t h e i n s u l a t i o n r e s i s t a n c e should be measured as desc r ibed i n t h e a p p r o p r i a t e paragraph of t h i s i n s t r u c t i o n book, and the va lue recorded f o r f u t u r e r e f e r e n c e . Any a b r u p t drop i n i n s u l a t i o n r e s i s t a n c e should be i n v e s t i g a t e d and t h e cause c o r r e c t e d . A c o r r o s i o n pre-v e n t a t i v e vapor space i n h i b i t i n g o i l has been added t o each b e a r i n g p e d e s t a l . One extra g a l l o n has been shipped wi th each machine. The g a l l o n c o n t a i n e r and each p e d e s t a l have l a b e l s which s ta te :

"Mobil Vaprotec Concent ra te Rust p r e v e n t a t i v e f o r T-AGOS Propuls ion Motor P e d e s t a l s Add 1 q t . t o each p e d e s t a l f o r every 6 months of s t o r a g e .

Dra in be fo re o p e r a t i n g motor."

Page 0-8 3 6H9 2 6 30 1

0-9 TOOLS AND TEST EQUIPMENT

Experience has shown t h a t adequate precaut ions taken dur ing s to rage w i l l avoid d e t e r i o r a t i o n of p a r t s , with consequent c o s t l y r e p a i r and an abnormally long i n s u l a t i o n dry ing t i m e a t the t i m e of eventua l i n s t a 1 1 a t i on.

Besides a complete inventory of s tandard mechanical t o o l s (e .g., ad-j u s t a b l e wrenches) t h e i n s t a l l a t i o n team should have a t i t s d i s p o s a l , the fol lowing a d d i t i o n a l t oo l s :

a . L i f t i n g h o i s t s inc luding spreaders and cab le s

b. Tools f o r the Aft pedes t a l :

L o c t i t e 242 Thread Locking Compound Locquic Primer N , Permatex No. 2 Sea lan t L o c t i t e Super Bonder 495 L o c t i t e 515 Sea lan t Heat conduct ive compound (Thermo-duct 574 high tempera-t u r e conductive grease as manufactured by Aremco Pro-d u c t s , Inc. P. 0. Box 429, Ossining, NY 10562, 914-762- 0685, i s one acceptab le compound) c . Torque wrenches and sockets ( f o r po le b o l t s )

A t t h e i n i t i a l s t a r t up of t h e motor, and dur ing i t s normal o p e r a t i o n , t he re a r e var ious precaut ionary tes ts t h a t should be completed t o p e r i o d i c a l l y check on t h e motor ' s performance. Equipment needed t o conduct t hese tes ts inc lude :

a. I n s u l a t i o n - r e s i s t a n c e meter b . A i r gap gauges and gauge blocks c . Voltmeters , ammeters and ohmmeters d . Sa fe ty equipment (e.g. i n s u l a t e d g loves)

Page 1-1

36H926301 PART 1

CHAPTER 1

General Informat ion and S a f e t y Precaut ions

1-1 SCOPE

This manual provides i n s t r u c t i o n s f o r t h e i n s t a l l a t i o n , o p e r a t i o n and maintenance of l a r g e h o r i z o n t a l , commutator-type, d i r e c t - c u r r e n t mot or s .

Accessories and a s s o c i a t e d equipment desc r ibed i n t h i s manual may have t h e i r own s e p a r a t e p u b l i c a t i o n s and, where r e fe renced , t hose publ ica-t i o n s are l o c a t e d elsewhere i n t h i s manual.

1-2 REFERENCES

The o u t l i n e drawing fu rn i shed wi th t h e machine i s the master source of in format ion f o r a p a r t i c u l a r u n i t , i d e n t i f y i n g t h e equipnent fu rn i shed by t h e General E l e c t r i c Company, i nc lud ing t h e r a t i n g , we igh t , dimen-s i o n s , l a y o u t , connec t ions , i n s t a l l a t i o n c l e a r a n c e s , a u x i l i a r y power requi rements , c o o l i n g and v e n t i l a t i n g requi rements .

1-3 DC MOTORS

A cut-away view of a t y p i c a l l a r g e d-c motor i s shown i n F i g . 1-1.

These motors are c h a r a c t e r i z e d by pedes ta l - type s l eeve bea r ings sup-p o r t i n g t h e r o t o r . The r o t o r , s t a t o r , base , and b e a r i n g p e d e s t a l s are major subassemblies of each motor , with enc losu res and a i r b a f f l e s fu rn i shed a s r equ i r ed f o r t h e s p e c i f i c i n s t a l l a t i o n .

F ig . 1-1 Typica l d-c motor , . s i n g l e a rmature , cut-away view

Page 1-2 36H9 26 30 1

1-4 GENERAL SAFETY PRECAUTIONS

High v o l t a g e and r o t a t i n g p a r t s can cause s e r i o u s o r f a t a l i n j u r y . The u s e of e l e c t r i c machinery, l i k e a l l o t h e r u t i l i z a t i o n of concen t r a t ed power and r o t a t i n g equipment, can be hazardous. Ins t a l l a t i o n , ope ra t -i n g , and maintenance of e l e c t r i c machinery must be performed by qual-i f i ed personnel . F a m i l i a r i z a t i o n wi th NEMA P u b l i c a t i o n MG-2, S a f e t y S tandard f o r Cons t ruc t ion and Guide f o r S e l e c t i o n , I n s t a l l a t i o n and Use of E l e c t r i c Motors and Genera to r s , t h e N a t i o n a l E l e c t r i c a l Code, and sound l o c a l p r a c t i c e s is recommended.

For equipment covered by t h i s i n s t r u c t i o n book, i t i s important t o observe s a f e t y p recau t ions t o p r o t e c t personnel from p o s s i b l e i n j u r y .

Among t h e many c o n s i d e r a t i o n s , personnel should be i n s t r u c t e d to :

1. Avoid con tac t w i th energ ized c i r c u i t s o r r o t a t i n g p a r t s .

2. Avoid bypass ing o r r ende r ing i n o p e r a t i v e any sa fegua rds o r p r o t e c t i v e dev ices .

3 . Avoid extended exposure i n c l o s e proximi ty t o machinery wi th h igh n o i s e l e v e l s .

4 . Use proper c a r e and procedures i n hand l ing , l i f t i n g , i n s t a l -l a t i n g , o p e r a t i n g and ma in ta in ing t h e equipnent .

S a f e maintenance p r a c t i c e s wi th q u a l i f i e d personnel i s impera t ive .

Before s t a r t i n g maintenance procedures , be pos i 2ive t h a t :

1. Equipment connected t o t h e s h a f t w i l l not cause mechanical r o t a ti on.

2. Main machine windings and a l l accesso ry dev ices a s s o c i a t e d with t h e work a r e a a r e d isconnec ted from e l e c t r i c a l power sou rces .

I f high p o t e n t i a l i n s u l a t i o n tests are r e q u i r e d , procedures and pre-cau t ions o u t l i n e d i n NEMA Standard MG-1 and MG-2 must be followed.

F a i l u r e t o p rope r ly ground t h e frame of t h i s machine may cause s e r i o u s i n j u r y t o personnel . Grounding must be i n accordance wi th t h e Na t iona l E l e c t r i c a l Code and c o n s i s t e n t w i th sound l o c a l p r a c t i c e .

1-5 SUMMARY OF WARNINGS/CAUTIONS

The r eade r i s i n s t r u c t e d t o be aware of t he fo l lowing s a f e t y p recau t ion warnings /caut ions which appear i n t h e subsequent c h a p t e r s of t h i s vol-ume.

CAUTION:

I F THE BEARING O I L I S REPLACED BY O I L OF HIGHER VISCOSITY THAN THAT

RECOMMENDED ON THE OUTLINE DRAWING, AT THE M A X I M U M OPERATIONAL SPEED

EXCESSIVE BEARING TEMPERATURES M A Y BE REALIZED WHICH MAY DAMAGE THE

BEARING.

Page 1-3 3 6 ~ 2 6 3 0 1

1-5 SUMMARY OF WARNINGS/CAUTIONS (Cont'd)

WARMING:

COVERS OF FORCE VENTILATED MACHINES ARE SUBJECT TO SUBSTANTIAL A I R

FLOW FORCES. USE CAUTION WHEN REMOVING AND REPLACING COVERS WHEN

MACHINE I S ROTATING OR ENERGIZED OR WHEN VENTILATING FANS ARE OPERA-

TING. THE SAFEST APPROACH I S TO ONLY REMOVE THE COVERS WHEN THE

MACHINE I S AT STANDSTILL AND THE VENTILATING FANS ARE OFF.

FAILURE TO OBSERVE T H I S PRECAUTION M A Y RESULT I N DAMAGE TO THE EQUIP-

MENT, INJURY TO PERSONNEL OR BOTH.

WARNIN:

Do NOT WATCH THE ARCING T I P S OF CIRCUIT BREAKERS OR CONTACTORS WHEN THE

DEVICE I S INTERRUPTING LOAD CURRENTS. EYES M A Y BE INJURED.

WARUING:

DISCONNECT POWER BEFORE TOUCHING ANY INTERNAL PART. HIGH VOLTAGE MAY BE

PRESENT WHEN THE MACHINE I S NOT ROTATING. DISCONNECT ALL AC LINE

CONNECTIONS TO THE RECTIFIER POWER SUPPLY. ALSO DISCONNECT POWER FROM

AUXILIARY DEVICES.

CAUTION:

Do NOT OPEN THE FIELD CIRCUIT OF A Dc MOTOR WHILE THE ARMATURE I S

ENERGIZED. HIGH ARMATURE CURRENTS OR, I F THE LOAD I S LIGHT, HIGH ROTOR

SPEED RESULTS.

I N CASE OF IMPROPER FUNCTIONING OF THE ELECTRICAL SYSTEM, A VOLTAGE

POTENTIAL MAY E X I S T ON ROTATING, UNGROUNDED ROTORS. T H I S POTENTIAL CAN

BE HAZARDOUS TO OPERATING PERSONNEL WHO CONTACT ROTATING PARTS SUCH A S

THE SHAFT.

CAUTION:

Do NOT ENERGIZE A FIELD CIRCUIT NOT EQUIPPED WITH EITHER A FIELD

DISCHARGE RESISTOR OR OTHER MEANS FOR ABSORBING THE ENERGY STORED WHEN

SUCH AN INDUCTIVE CIRCUIT I S SUBSEQUENTLY DE-ENERGIZ ED. HIGH V O G

TAGES, I N W C E D WHEN THE CIRCUIT I S DE-ENERGIZED, M A Y DAMAGE THE I N -

SULATION.

CWTION:

Do NOT ATTEMPT TO OPEN AN ISOLATING OR DISCONNECT SWITCH WHEN UNDER

LOAD. SUCH SWITCHES ARE NOT DESIGNED AS CURRENT-INTERRUPTION DEVICES

AND CAN BE DAMAGED BY THE ENSUING ARC. THE WAD SHOULD BE REWCED TO

ZERO, THEN THE SWITCH OPENED.

Page 1-4

1-5 SUMMARY OF WARNINGS/CAUTIONS (Cont'd)

CAUTION:

Do NOT CLOSE ANY SWITCH OR CIRCUIT BREAKER SLOWLY. CLOSE THE DEVICE

FIRMLY WITH A SMOOTH, CONTINUOUS MOTION SO, I F A FAULT E X I S T S , THE

SWITCH W I L L CLOSE SECURELY AND CONWCT sVFFICIENT FAULT CURRENT TO

OPEN THE CIRCUIT PROTECTIVE DEVICE.

WARUING:

BEFORE I N I T…