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3‐2 Maintenance & Troubleshooting

MN400

Table 3‐2  Service Conditions

Severity of Service

Hours per day

of Operation

Ambient Temperature

Maximum

Atmospheric

Contamination

Standard

8

40

°

 C

Clean, Little Corrosion

Severe

16 Plus

50

°

 C

Moderate dirt, Corrosion

Extreme

16 Plus

>50

°

 C* or 

Class H Insulation

Severe dirt, Abrasive dust, Corrosion, Heavy

Shock or Vibration

Low Temperature

<-29

°

 C **

*

Special high temperature grease is recommended (Dow Corning DC44).  Note that Dow Corning DC44 grease does
not mix with other grease types. Thoroughly clean bearing & cavity before adding grease.

**

Special low temperature grease is recommended (Aeroshell 7).

Table 3‐3  Relubrication Interval Multiplier

Severity of Service

Multiplier

Standard

1.0

Severe

0.5

Extreme

0.1

Low Temperature

1.0

Some motor designs use different bearings on each motor end.  This is normally indicated on the motor nameplate.  
In this case, the larger bearing is installed on the motor Drive endplate.  For best relubrication results, only use the
appropriate amount of grease for each bearing size (not the same for both).

Table 3‐4  Bearings Sizes and Types

Frame Size

NEMA (IEC)

Bearing Description

(These are the “Large” bearings (Shaft End) in each frame size)

Bearing

Weight of Grease to

add *

oz (Grams)

Volume of grease

to be added

in

3

teaspoon

56 to 140 (90)

6203

0.08 (2.4)

0.15

0.5

140 (90)

6205

0.15 (3.9)

0.2

0.8

180 (100-112)

6206

0.19 (5.0)

0.3

1.0

210 (132)

6307

0.30 (8.4)

0.6

2.0

250 (160)

6309

0.47 (12.5)

0.7

2.5

280 (180)

6311

0.61 (17)

1.2

3.9

320 (200)

6312

0.76 (20.1)

1.2

4.0

360 (225)

6313

0.81 (23)

1.5

5.2

400 (250)

6316

1.25 (33)

2.0

6.6

440 (280)

6319

2.12 (60)

4.1

13.4

5000 to 5800 (315-450)

6328

4.70 (130)

9.2

30.0

5000 to 5800 (315-450)

NU328

4.70 (130)

9.2

30.0

360 to 449 (225-280)

NU319

2.12 (60)

4.1

13.4

AC Induction Servo

76 Frame 180 (112)

6207

0.22 (6.1)

0.44

1.4

77 Frame 210 (132)

6210

0.32 (9.0)

0.64

2.1

80 Frame  250(160)

6213

0.49 (14.0)

0.99

3.3

*

Weight in grams = .005 DB
of grease to 
be added

Note: Not all bearing sizes are listed.  For intermediate bearing sizes, use the

grease volume for the next larger size bearing.

Содержание ODP series

Страница 1: ...Integral Horsepower AC Induction Motors ODP WPI WPII Enclosure TEFC Enclosure Explosion Proof Installation Operating Manual 2 07 MN400...

Страница 2: ......

Страница 3: ...n 2 1 Overview 2 1 Location 2 1 Mounting 2 1 Alignment 2 1 Doweling Bolting 2 2 Power Connection 2 2 Conduit Box 2 2 AC Power 2 2 First Time Start Up 2 4 Coupled Start Up 2 4 Jogging and Repeated Star...

Страница 4: ...Section 1 General Information ii Table of Contents MN400...

Страница 5: ...mith Arkansas or one of the Baldor Authorized Service Centers and b the purchaser gives written notification concerning the motor and the claimed defect including the date purchased the task performed...

Страница 6: ...n by this equipment Improper use can cause serious or fatal injury Only qualified personnel should attempt to install operate or maintain this equipment WARNING Do not by pass or disable protective de...

Страница 7: ...driven load by the motor lifting hardware The motor lifting hardware is adequate for lifting only the motor Disconnect the load from the motor shaft before moving the motor Caution If eye bolts are u...

Страница 8: ...tor is packaged for ease of handling and to prevent entry of contaminants 1 To avoid condensation inside the motor do not unpack until the motor has reached room temperature Room temperature is the te...

Страница 9: ...and maintain alignment between the motor and shaft load Failure to provide a proper mounting surface may cause vibration misalignment and bearing damage Foundation caps and sole plates are designed t...

Страница 10: ...uit boxes are provided on some motors for accessories such as space heaters RTD s etc AC Power Connect the motor leads as shown on the connection diagram located on the name plate or inside the cover...

Страница 11: ...Figure 2 2 Typical Motor Performance VS Voltage Variations 20 15 10 5 0 5 10 15 20 15 10 5 0 5 10 15 Voltage Variations Changes in Motor Performance Full Load Current Full Load Current Power Factor Po...

Страница 12: ...pling guards and protective devices are installed Ensure motor is properly ventilated Coupled Start Up This procedure assumes a coupled start up Also that the first time start up procedure was success...

Страница 13: ...they are tight Relubrication Bearings Bearing grease will lose its lubricating ability over time not suddenly The lubricating ability of a grease over time depends primarily on the type of grease the...

Страница 14: ...on the motor Drive endplate For best relubrication results only use the appropriate amount of grease for each bearing size not the same for both Table 3 4 Bearings Sizes and Types Frame Size NEMA IEC...

Страница 15: ...ing failure 3 Add the recommended amount of grease 4 Operate the motor for 15 minutes with grease plug removed This allows excess grease to purge 5 Re install grease outlet plug Without Grease Provisi...

Страница 16: ...phases for balance Grounded winding Perform dielectric test and repair as required Improper connections Inspect all electrical connections for proper termination clearance mechanical strength and elec...

Страница 17: ...ler bearings or in direct contact with the sleeve bearing shell Winding RTDs Temperature Limit In 5C 405C Maximum Ambient Motor Load Class B Temp Rise 3 80 C Typical Design Class F Temp Rise 3 105 C C...

Страница 18: ...3 6 Maintenance Troubleshooting MN400...

Страница 19: ...Baldor District Offices Baldor District Offices Baldor District Offices...

Страница 20: ...Baldor Electric Company MN400 Printed in USA 2 07 BALDOR ELECTRIC COMPANY World Headquarters P O Box 2400 Fort Smith AR 72901 2400 479 646 4711 Fax 479 648 5792 www baldor com...

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