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103-4E Issue 2 Spare parts, installation and maintenance of ac electric induction motors

Introduction

Your Brook Crompton motor is designed

for long life, and low running costs. Careful

installation and maintenance will ensure that

you achieve reliable operation and optimum

efficiency.

Pre-installation requirements

WARNING

Handling and lifting of electric motors

must only be undertaken by authorised

personnel. Full product documentation and

operating instructions must be available

together with tools and equipment

necessary for safe working practice.

Receipt

Before any motor is accepted on site it

should be inspected carefully for damage or

loss incurred during transit.

Packing materials may be damaged

including sheeting and crate timbers.

Handling operations may have damaged fan

cowls, terminal boxes or auxiliaries.

Where an instance of droppage or loss is

evident or suspected, it may be necessary to

unpack the goods to establish the full extent

of the problem.

Wherever possible, damage should be

recorded, photographed and witnessed.

Report any damage to the carriers and

Brook Crompton as soon as possible,

quoting the motor number and consignment

note reference. The insurance company’s

agents shown on the insurance certificate

should also be advised.

Lifting

Eyebolts and/or lifting trunnions supplied

with the motor are designed to support only

the weight of the motor, not the weight of

the motor and any ancillary equipment

attached to it. Be absolutely sure that cranes,

jacks, slings and lifting beams are capable of

carrying the weight of equipment to be

lifted.

Where an eyebolt is provided with the

motor, this should be screwed down until its

shoulder is firmly against the face of the

stator frame to be lifted. Eyebolts are

normally designed for a vertical lift. For

eyebolt/lifting lug torques, see opposite.

Eyebolt/lifting lug bolt torques

Where two eyebolts/lifting lugs are used with

inclined loading, the maximum safe working

loads of BS 4278: 1984 should not be

exceeded (ISO 3266).

Tables of approximate weights

90S/L

100L

112M

132S/M

160M/L

180M/L

200L

225S

225M

250S

250M

280S

280M

315S

315M

315L

355M/L

NEMA/

CSA

Type

Metric

*W-DF design only. Lifting lugs secured with bolts

and nuts. High tensile socket headed bolts and

special square nuts must be used

†

The eyebolt should be firmly screwed down

(without over tightening), to ensure that the col-

lar is fully seated

Eyebolt dia

Lifting lug

bolt dia*

Cast iron frames

Torque

–

143/145

–

182/184

213/215

254/256

284/286

324

326

364

365

404

405

444

445

504

505

585/6/7

–

M12

†

M12

†

M12

†

M16

†

M10*

M16*

M20*

–

220

400

–

162

295

Lbf.FT

DF80M

DF90S

DF90L

Cast iron construction

Frames DF80–DF90L

Type

16.5

20.5

23.5

0.02

0.03

Net weight

Gross weight

Cubage

W-DF100L

W-DF112M

W-DF132S/M

W-DF160M/L

W-DF180M/L

W-DF200L

W-DF225S

W-DF225M

W-DF250S

W-DF250M

W-DF280S

W-DF280M

W-DF315S

W-DF315M

W-DF315L

W-DF355S

W-DF355M

W-DF355L

Cast iron construction

Frames W-DF100L–W-DF355L

Type

35.

72.5

133

177.5

255

320

375

420

570

660

800

1000

1100

1300

2000

2300

2500

78.5

145

193.5

270

335

390

460

610

721

871

1095

1195

1395

2120

2420

2620

.03

0.05

0.08

0.15

0.21

0.30

0.37

0.63

0.70

1.2

1.8

2.3

Net weight

Gross weight

Cubage

K-CF225M

K-CF250S

K-CF250M

K-CF280S

K-CF280M

K-CF315S

K-CF315M

Drip proof cast iron construction

Frames K-CF225M–K-CF315M

Type

378

391

444

536

633

801

916

411

446

499

602

699

885

1000

0.37

0.63

0.70

1.2

1.8

2.3

Net weight

Gross weight

Cubage

DA63

W-DA71

W-DA80

W-DA90S

W-DA90L

W-DA100L

W-DA112M

W-DA132S

W-DA132M

W-DA160M

W-DA160L

W-DA180M

W-DA180L

Aluminium construction

Frames DA63–DA180

Type

12.5

14.5

100

140

148

5.4

6.4

13.5

15.5

112

165

174

0.010

0.020

0.030

0.038

0.050

0.071

0.076

0.125

0.253

Net weight

Gross weight

Cubage

Installation and maintenance of

ac electric induction motors

1 2 3 4 5 6 7 8 ... 11 12

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