Technical_Exhibit_04_Cooling_Tower_B6400.pdf

1) COOLING TOWER CT-1 THRU CT-3

A. EQUIPMENT DESCRIPTION (& TECHNICAL DATA)

a. Item No ： 23 65 00 - 101~103

b. MFR & Model ： U.S MARLEY AV6102A1

c. Address ： P.O. BOX 7322

Baltimore, Maryland 21227 Tele : (410)799-6920 Fax : (410)799-6416

d. POU ： ITEM #CT1~ 3, COOLING TOWER(ONE STOP

PROCESSING CENTER)

e. Actual Data ： 5 YEARS WARRANTY FOR FANS, FAN DRIVES, ELECTRIC MOTORS, COLD WATER BASIN

BASIN HEATER, NO INFORMATION, INDUCED DRAFT

CROSS-FLOW, FAN 4/8 POLE CHAGE CONTROL,

BASIN HEATER, ELECTRIC WATER LEVEL CONTROL,

EXTERNAL SERVICE PLATFORM, INTERNAL SERVICE

PLATFORM, AIR INLET SCREEN, SUMP DEBRIS

SCREENS, VIBRATION CUT-OFF SWITCH, VIBRATION

ISOLATION, EXTENDED LUBRICATION LINES,

CORRISION PROTECTION SYSTEM, GALVANIIZED STEEL

COLD DECK BASIN, GALVANIIZED STEEL

CONSTRUCTION, FILLER TYPE PVC (ASTM STD

E84-77A), ELIMINATOR DRIFT LOSS 0.001 %,

CONSTRUCTION G235 GALVANIZED STEEL, COLD

WATER BASIN G235 GALVANIZED, HOT WATER BASIN

G235 GALVANIZED STEEL, CASING G235 GALVANIZED

STEEL, MOTOR PREMIUM EFFCIENCY WEG ELECTRIC

CORP. 60HZ X 4/8P X 460V, PIPING INLET DIA 8", SIDE

SUCTION OUTLET DIA 8", OVER FLOW 4", DRAIN 3",

VIBRATION SWITCH M-5,

VIBRATIONI ISOLATION YST-H-413(ISO 9001 :2000),

FAN MARLEY X7, EELECTRIC WATER LEVEL CONTROL

: LOW-LEVEL ALARM & CUTOFF

CORRISION PROTECTION SYSTEM :

DETAIL DESCRIPTION OFEQUIPMENT SHALL BE AS

FOLLOWS; SPX DATA SHEET,

M8-5

SPX @

>Marley@

M8-7

XP

사각형

빠

3 T l m m p ν 매

AV towers are galvanized steel, fadory-assembled, general purpose crossflow cooling towers, designed to se미e normal air conditioning and refrigeration systems as well as light industrial loads. They evolve from a singleflow concept of towers pioneered by Marley in the 1950s, and incorporate all of the design advancements that our customers have found valuable. They represent the current state of the art in this cooling tower category.

This booklet not only relates the language to use in describing an appropriate AV cooling tower-but also defines why certain items and features are important enough to specify with the intention of insisting upon compliance by all bidders. The left hand column of pages 18 thru 35 provides appropriate text for the various specification paragraphs, whereas the right hand column comments on the meaning of the subjed matter and explains its value.

Pages 18 thru 25 indicate those paragraphs which will result in the purchase of a basic cooling tower-one that accomplishes the specified thermal performance, but which will lack many operation- and maintenance-enhancing accessories and features that are usually desired by those people who are responsible for the continued and continuing operation of the system of which the tower is part.

It will also incorporate those standard materials which testing and experience has proven to provide acceptable longevity in normal operating conditions.

Pages 26 thru 35 provide paragraphs intended to add those features, components, and materials that wi ll customize the tower to meet the user's requirements‘

M8-9

AV Cooling Tower - Eng ineering Data: Schematic

Tower Nominal Dimensions

Model Tons note 2 note 3 L H A s

AV6100A 117

AV6101A 138

r AV6102A 157 8'-4" 12’-33/16" 8’-7W’ 11 ’-6‘’1/ 16'’

AV6 103A 167

AV6104A 195

AV6200A 172

AV6201A 193

AV6202A 213

11’-10" 12'-33116

11 12’-1 112" 11'-6 11/1 6"

AV6203A 229

AV6204A 259

AV6205A 275

AV6300A 190

AV6301A 204

AV6302A 232 8'-4" 15' -2 11，끼 ，" 8’-7써” 14’-63/ 16

AV6303A 248

AV6304A 264

AV6400A 201

AV6401A 217

AV6402A 246

8’-4" 16’-715/15" 8’-7112" 15’- 11 끼 5'

AV6403A 263

AV6404A 285

AV6405A 302

AV6500A 242

AV6501A 270

AV6502A 288

9’-10" 16’_715/ 16" 10’-1'12" 15'-11 7/16

AV6503A 311

AV6504A 329

AV6505A 345

AV6600A 279

AV6601A 305

AV6602A 322 11’-10" 15’-211/16" 12'-1'/," 14’-6아5'

AV6603A 343

AV6604A 355

AV6700A 293

AV6701A 320

AV6702A 344 11 ’-10" 16’715/ 16" 12’-1112" 15’-1 17/16

AV6703A 365

AV6704A 390

NOTE

1 Use this bulletin for preliminary layouts only. Obtain current drawings I rom your Marley sales representative. AII table data is per cel l.

2 Last numeral of model number indicates number 01 cells. Change as

.!l:l2propriate for your selection 3 lt'Jominal tons are based upon 950 F HW, 850 F C씨 780 FWB and 3

GPM/ton‘

Design Shipping Weight

Motor 。perating Ib hp Wt/Cell Heaviest P Ib WeighVCell Section

3 8098 4248

5 8135 4285

12’-3'γ" 7 ‘h 8165 4315

10 8356 4506

15 8454 4604

5 10779 5316

7V2 10809 5346

10 10837 5374 12'-315/1 6"

15 11192 5729

20 11235 5772

25 11335 5872

7112 9939 5467 3112

10 9969 5497 3142

15’-37/16" 15 10248 5776 3335

20 10344 5872 3431

25 10442 5970 3529

711'2 10573 5735 3112

10 10583 5765 3142

15 10836 6057 3335 16’-8 11/1 6"

20 10932 6153 3431

25 11029 6250 3528

30 11069 6290 3568

10 12019 6428 3513

15 12120 6529 36 14

20 12468 6877 3836 16’-8 11/1 6"

25 12572 6981 3940

30 12615 7019 3978

40 12780 7189 4148

15 13247 6943 3990

20 13400 7036 4083

15’-37116" 25 13774 7410 4326

30 13812 7448 4364

40 13982 7618 4534

15 14052 7267 3990

20 14145 7360 4083

16’-8 11/15" 25 14249 7464 4187

30 14578 7641 4364

40 14748 7811 4534

4 Standard overflow is a 4" dia. connection in the collection basin wal l on the air inlet side 01 the tower. A 3" dia. drain connection is located below the overflow. See page 7 for details

5 Out let sizes vary according to G PM and arrangement. See pages 6 and

7 for outl et sizes and details.

6 Makeup water connection may be 1" or 2" dia., depending upon tower heat load, water pressure, and desired connections. See page 6 for addit ional informat ion.

M8-11

AV Cooling Tower - Engineering Data: Schematic

Use this data for preliminary layouts only. Obtain current drawing from your Marley sales representative

UPDATE… web-based seleclion software, available at spxcooling‘com/update provides AV cooling tower model recommendations based on customer’s specific design requirements.

MARLEY HCVAι

(OPTION)

띠 」Z

융-

INLET PIPING DETAILS

A

H

빼

뻐

HINGED ACCESS

DOOR

M8-12

AV Cooli ng Tower - Engineering Data: Piping

OUTLET AND MAKEUP PIPING DETAILS

Unless otherwise specified, single-cell towers normally have a side-outlet suction appropr떠te for the design water flow rate- see page 7. This usually assures the lowest possible installed tower elevation. Side-suction connection pipes extend roughly 3" outside the basin, and are beveled for weld connection and also grooved for a mechanical coupling‘

Outlet piping can be kept below the cold water basin level by choosing a bottom outlet connection in lieu of the side suction. Bottom outlet design conform to standard class 125 ANSI pipe flange specifications. AII outlet ar rangements include easily removable debris screens.

Multicell towers, intended to operate together as a com mon unit, are joined by steel flumes between the collection basins. These flumes equalize the operating water level between basins and also provide a flow passage from cells not eq비pped with outlets or makeup valves, often eliminat ing the need to specify an outlet and makeup valve for each cell on a multicell installation. Refer to sales drawings to obtain flow values of suctions and bottom outlets for multicell installations‘

The best choice for a tower used with a remote or indoor storage tank- see page 11 - or on a concrete cold water basin is usually a bottom outlet, with or without screen.

MAKEUP

The amount of water constantly evaporated from a cooling tower varies directly with the heat load applied. In addition to evaporation, water is normally lost to the blow down (bleed-off) necessary to maintain dissolved solids concentration at an acceptable level in the circulating water system.

The AV tower is equipped with a float-operated, me chanical makeup valves to automatically replenish this lost water. The followi ng tables, calculated for a concentration of 3 times normal, indicate the rate of water loss, and the size of valve(s) required. If your installation's cold water basin will drain by gravity to a remote storage tank, or if you plan a separate means of contr미ling makeup water, we offer a price reduction for deleting the makeup valve.

m 띠

Makeup Water Flow Required- gpm to maintain three (3) concentrations

Tower Cooling "Range" (hot water. minus cold water.)

gpm 5. F 10. F 15. F 20. F 30. F 40. F

200 2 3 4 5 8 10

400 3 5 8 10 15 20

600 4 8 12 15 23 30

800 5 10 15 20 30 40

1000 7 13 19 25 38 50

1500 10 19 29 38 57 75

2000 13 25 38 50 75 100

3000 19 38 57 75 113 150

4000 25 50 75 100 150 200

5000 32 63 94 125 188 250

6000 38 75 113 150 225 300

8000 50 100 150 200 300 400

N O TE

• If circulating water is to be maintained at 2 concentrations instead of 3, multiply table gpm values by 1.36 before sizing makeup valve.

Makeup Valve Flow Capacilies-GPM

Pressure al Valve Inlel 1" Diameler 2" Diameler while flowing-psig Valve Valve

10 56 90

20 78 120

30 92 143

40 106 160

50 117 167

N O TE

• If makeup water pressure exceeds 50 psig, use pressure reducer ahead 。f valve

• For flow requirements exceeding the above limitations, use multiples of the same size valve.

M8-13

AV Cooli ng Tower - Engineering Data: Piping

WELDING ‘I BEVEL

fh-쉰4

MECHANICAL

COUPLlNG GROOVE

5UCTION HOOD

FOR5잃」μ BA5!EOF낱 13꽤

REMOVABLE

TRA5H 5CREEN

TOWER SECTION

5IDE-OUTLET 5UCTION CONNECTION

DRAIN

3" FN

OUTLET

5EE TABLE FOR 5 1ZE

Zr mWER COLLEn|0N

BA51N FLOOR

Section r NO댄 BOπOM OUTLET 15 I

OUTLET

CONNECTION

AL50 AVAILABLE 에THOUT L_ BA5E OF

TOWER TRA5H 5CREEN

BOTTOM OUTLET CONNECTION

BA5E OF

TOWER

AIR INLET FACE SECTION

。미let

Dia‘

4"

6"

탑〔

10"

12"

14"

Side Suction pump flow air inlet face

AV61 AV62 and

AV63 AV66

and thru AV67 AV65

Tower Model rτiJfiî

AV62

AV63

AV64

AV65

AV66

AV67

Maximum gpm Outlet

Bottom Outlet Side Suction Bottom Outlet pumpflow g’ ~:~-~~:~ ’ pump flow w/anti.vortex plate or g ra씨tyf low

AII Models AII Models AII Models

71 164

162 372

월합‘ 287 658

453 1038

644 1476

788 1807

Dimensions

A B

1'-9" 3’-10"

3’-6" 5’-7"

1’-9" 3’-10"

1'-9" 3’-10"

2’ 6" 4’-7"

3’ 6" 5’-7"

3’ 6" 5’-7"

OVERFLOW, DRAIN, AND MAKEUP CONNECTION

NOTE

1 For gravity-flow si tuations (as to an indoor tank), use botlom outlet.

Side outlet suction is not recommended for gravity flow.

2 GPM limits are based on single-cell or multicell towers with a single outlet per cell. For multicell towers connecled with collection basin flumes and less than one outlet per tower cell consult your Marley sales representative for more specific information.

M8-14

AV Cooling Tower - Engineering Data: Support

L

OVERALL OF 6A51N

D

HOLE5 FOR

1f2" DIA. ANCHOR

60LT54REQD

11’-8 1f2" 11’-4 ’/ε‘ 11'-8 '12" 11'-4 '/:ε‘

」딩 。m ι 。I u Z

따 i

M”

때

피

5UPPORTING 5TEEL

OPTlON ONE

Dimensions Design Operating Design Operating Tower Model WeightlCell Load at Anchor

L D Ib Ib

AV6100 8’-4" 8’-2" 8435 2815

AV6200 11 ’-10" 11 ’-8" 11314 3824

AV6300 8’-4" 8'-2" 10370 3436

AV6400 8’-4" 8’-2" 11024 3636

AV6500 9'-10" 9'-8" 12709 4203

AV6600 11 ’- 10" 11 ’-8" 13912 4709

AV6700 11 ’-10" 11 ’ 8" 14791 4939

L

OVERALL OF 6A51N

D

ANCHOR

60LT

HOLE5 FOR

112" DIA. ANCHOR

60LT54REQD

‘IB

TOWER COLLECTION

6A5IN-AIR INLET FACE

5UPPORTING 5TEEL

OPTIONTWO

TOWER

COLLECTION

6A51N

5UPPORT

6YOTHER5 6YOTHER5

5ECTION A

M8-15

AV Cooling Tower - Eng ineering Data: Support 13

L

OVERALL OF 6A51N

L

OVERALL OF 6A51N

‘IB

D

~ANCHOR ANCHOR

cl’ IFö다 60다 핀~----- -- ------------ -- ---1:

r팎-------------------피

L HOLE5 FOR

'/2'’ DIA. ANCHOR

60LT5 4REGD ,,'-8 1f2"

8'-0 1f2'’

MIN

나

。I

Q Z

잉 ι 。Z Q Z

T|

0< 。 I

~r:

젊 : : I r--------------------11 I ~ _________________________ ! I

\ 씨 C

'- TOWER COLLECTION

6A5IN-AIR INLET FACE

D

"’-8 1f2" 8'-0 ’

MIN

M때

HOLE5 FOR

1/2'’ DIA.ANCHOR

60LT5 4REGD

,'-10 1/4"

MAX

TOWERCOLLEσ10N

6A5IN-AIR INLET FACE

5UPPORTING 5TEEL

OPTION FOUR

5UPPORTING 5TEEL

OPTION THREE

r- MINIMUM BEARING WIDTH MU5T BE

1 PROVIDED BY BEAM FLANGE OR BEARING

I PLATE AT EACH ANCHOR BOLT LOCATION.

6’L켜←」

Iv- ~~ι |ιν BYOTHER5

NORMAL

GAUGE

ANCHOR BOLT LOCATION RELATIVE

TO BEAM ORIENTATION 15 OPTIONAL

VIEWC

3 1f2" MAX TO CLEAR LARGE5T

BOTTOM OUTLET FLANGE

TOWER

COLLECTION

BA51N

겨 1ι"WA5HER REQ

BYOTHER5

VIEWB

6 Anchorage for Supporting Steel Options One and Two are designed for 30 psf wind and/or .7g seismic loading for AV61 and AV62, 20 psf wind and/or .3g for AV63 thru AV65 and 20 psf wind and/or .46g for AV66 and AV67. Anchorage capacity for Supporting Steel Options Three and Four are less and will vary with the beam spacing.

7 Tower may be placed on a f lat concrete slab. Side outlet must be specified. See pages 6 and 7 and consult your Marley application sales representative.

8 Tower may be supported from piers at each anchor bolt location, as a support alternative.

1 Use th is bulletin for prel iminary layouts only. Obtain current drawings from your Marley sales representative for f inal design.

2 Grillage anchorage Option Three is not intended for use with the 8 0t tom Outlet Option.

3 Multicell installat ions shall conform to arrangements shown. The stan dard spacing between the side face anchor bolts is 5'12"

4 Purchaser to provide tower support complete with holes and anchor bolts. 0 0 not use studs! Anchor points must be framed flush and level at top.

5 Oesign operating weight occurs with collection basin full to overflow level. Actual operating weight varies with G PM and piping scheme

NOTE

M8-16

AV Cooling Tower - Specifi cat ions: Base l1-"fõT뉘여Irr"'lrr.l'.，，. ••••••••••• l!! FiII, Louvers, and Drift Eliminators:

끄 Fill shall be lilm-type, thermolormed 01 pvc, with louvers and eliminators lormed as part 01 each 1川 sheet‘ Fill shall be suspended Irom hot-dip galvanized struc tural tubing supported Irom the tower structure, and shall be elevated above the Iloor 01 the cold water basin to lacilitate cleaning. The air inlet lace 01 the tower shall be free 01 water splash-out.

]J_ Drift eliminators shall be PVC, triple-pass, and shalllimit dr에 losses to no more than 0.005% 01 the design GPM Ilow rate‘

Louvers

-‘:m::r여1 lIO<:l rr.ro..’'F.1 "

• Louvers integral with the lill keep the Ilowing water within the conlines 01 the lil l. The separate external louvers used by others permit water t。 escape the lill and lorm ice or produce an unsightly situation adjacent to the tower. 1I you plan to use your tower in the wintertime, particularly lor Iree cooling, integral louvers will put your operating concerns to rest

• Drift rate varies with design water loading and air rate, as well as drift eliminator depth \~ and number 01 directional ""'7 changes. A drift rate 01 0.001% is readily available on many stan" dard models. 1I a lower rate is required, please discuss with your Marley sales representa" tlve.

Drift Eliminators

M8-25

Motors I Automation I Energy I Transmission & Distribution I Coatings

! W22 Cooling Tower NEMA Premium@ Efficiency Motors 1-100Hp, 1800, 1200, 1800/900 & 1200/900 RPM Single Speed & 2-speed

US2065 03/12

Cooling Tower

Evaporative Condensers

Chemical plants

Pulp and paper mills

Pumps

Fans

Packaging equipment

R

M8-58

XP

사각형

Sung-Am 텍스트 상자 23 65 00 - 101 ~ 103

파핸 www.weg.n하

Cooling Tower - NEMA Premium Efficiency - Three Phase -TEFC/TEAO

WEG’S Cooling Tower - NEMA Premium Efficiency motors meet or exceed all 티SA- 2007 requirements for energy efficiency.

These TEFC and TEAO motors are built according to NEMA standa띠s and designed for operation in 100% humidity and the most corrosive enviro깨ments.

The entire line is Inverter Rateg for use with Variable Frequency Drives. They are designed to operate in either horizontal or vertical sha야 up/down position. Sealed bearing in all sizes require no lubrication.

As with any other WEG motor, Cooling Tower motors are tested in accordance with IEEE 112, Method 8, and their efficiency values are certified by UL (CSA C39이.

Co이ing Tower motors will meet Design 8 torques, maintaining exceedingly high breakdown and locked rotor torque while providing the highest rated efficiency levels.

STANDARDFEATURES

• Three-phase, 1800, 1200, 1800/900 and 1200/900RPM 60Hz

• Voltage: 208-230/460V, 200V, 460V or 575V 60Hz

• 1.25 Service Factor at 60Hz for Single Speed motors

• 1.15 Service Factor at 60Hz for Two-Speed motors

• Single Speed available from 1-1 OOHp and also rated 380V 50Hz 1.0SF

• Available in Totally Enclosed Fan Cooled - TEFC - and Totally Enclosed Air Over-

TEAO - water/dust tight (IP55)

• Multiple End Shield Drain plugs for all mounting position

• Multiple Drain plugs on Terminal Box

• Rubber Lead Separator (is이at。이 between Terminal Box and Frame

• Joint Seal between frame and brackets

• Internal and External Epoxy Paint for increased corrosion protection

• V-ring slinger on both end shields

• Umbrella Seal on drive end prevents watertracking down shaft in shaft up installations

• Double Sealed Anti-Friction Ball Bearings - maintenance free

• NEMA frames 143T-445T

• Class ‘F’ insulation in all frames for increased reliability

• Class ‘H’ resin insulation system

• Class ‘B’ (800C) Temperature rise at f비 I load for longer life

• Continuous duty (S1)

• NPT threaded, Cast lron terminal box rotatable in 900 increments

• F2 mount (Standard Configuration); F1 available as stock mod

• 벼ser Etched 매SI 316 Stainless steel nameplate

• MGI Paπ 31 rating for use with VFD - 1000:1 VT speed range

OPTIONAL FEATURES

• Thermos없.ts

• Thermistors

• Space Heaters

• Shaft Grounding Device

• Drip covers for shaft down TEFC

Note AII motors are tested according to IEEE 112 Std

- Method ‘B’ or C390 CSA Energy effi cien매 motors verilied by UL in addition to the DDE The NEMA Premium@ is a trademark 01 NEMA

CE 遭빼 ø

M8-59

W

EG

W

C oo lin g

To w er D ut y

M ot or s

FA

N

C O

VE

R

S te el c ov er s on

T th ro ug h

5T a nd

C as t lro n

T fr am es a nd u p

I ð

FA

N

M ad e of r ig id t he rm o pl as tic no n -s pa rk in g an d re si st an t to en vi ro nm en t co nd iti on s an d en su re lo w n oi se o pe ra tio n

N

AM

EP

LA

TE

La se r et ch ed a nd e a sy to r ea d st ai nl es s st ee l fo r co rr os io n re si st an ce

Ll

FT

IN

G

L

UG

S

U M

BR

EL

LA

S

EA

L

F its ye

.Y

Bi ~g

S lin ge r !

o pr ov id e

IP

P ro te ct íõ n fr om w at er a nd o th er c o n ta m in a n ts a d e o f fÇ

)r ge q t e e l o n a ll m ot rs

T fr am e a n d u p.

M u| tip le |u gs a va i|a b| e ba se d on m ou nt in g -c on fig ur at io n a.

I

를

O~ O

를

1f t'

C O

N D

U

IT

B O

X F ul ly

G as ke te d , C as t lro n co nd ui t bo x in cl ud es d ra in pl ug s, le ad s ep ar at or g as ke t an d in te rn al e p o xy co in g

PE

R

M

AN

EN

TL

Y

SE

AL

ED

d Lu br ic at ed b ea ri ng p ro vi de ai nt en an ce f re e lo ng

-li le

FR

AM

E M ad e of h ig h gr ad e F

C -2 c as t iro n fo r m ax im um c oo lin g.

In cl ud es a dd iti on al g ro un di ng lu g an d ex te rn al e po xy p ai nt

IN

TE

R N

AL

E

PO

XY

C O

AT

IN

G

E nt ire i nt er io r o f t he m ot or is co ed w ith e p o xy f or m ax im um oi st ur e/ co rr os io n re si st

D R

AI

N

P

LU

G S

Lo c~ te d_ e ve ry _ 9 de gr ee s an d on t he fa f ea ch e nd sh ie ld

E as y to o pe n an d a cc o m m o d a te s al l m ou nt in g c on fig ur at io ns

M 8-

Manual of Electric Motors58 www.weg.net

INSTALLATION, OPERATION AND MAINTENANCE

MANUAL OF ELECTRIC MOTORS

This manual provides information about WEG induction motors fitted with squirrel cage, permanent magnet or hybrid rotors, low, medium and high voltage, in frame sizes IEC 56 to 630 and NEMA 42 to 9606/10.

The motor lines indicated below have additional information that can be checked in their respective manuals:

Smoke Extraction Motors;

Electromagnetic Brake Motors;

Hazardous Area Motors.

These motors meet the following standards, if applicable:

NBR 17094-1: Máquinas Elétricas Girantes - Motores de Indução - Parte 1: trifásicos.

NBR 17094-2: Máquinas Elétricas Girantes - Motores de Indução - Parte 2: monofásicos.

IEC 60034-1: Rotating Electrical Machines - Part 1: Rating and Performance.

NEMA MG 1: Motors and Generators.

CSA C 22.2 N°100: Motors and Generators.

UL 1004-1: Rotating Electrical Machines - General Requirements.

If you have any questions regarding this manual please contact your local WEG branch, contact details can be found at www.weg.net.

M8-63

Sung-Am

Manual of Electric Motors64

N

G L

IS

H www.weg.net

Figure 2.1 - IEC motor nameplate

M8-69

Manual of Electric Motors 65

N

G L

IS

H www.weg.net

Figure 2.2 - NEMA motor nameplate

M8-70

Manual of Electric Motors80

N

G L

IS

H www.weg.net

The motors may be mounted on:

Concrete bases: are most used for large-size motors (see Figure 6.2);

Metallic bases: are generally used for small-size motors (see Figure 6.3).

The metallic and concrete bases may be fitted with sliding system. These types of foundations are generally used where the power transmission is achieved by belts and pulleys. This power transmission system is easier to assemble/disassemble and allows the belt tension adjustment. Other important aspect of this foundation type is the location of the base locking screws that must be diagonally opposite. The rail nearest the drive pulley is placed in such a way that the positioning bolt is between the motor and the driven machine. The other rail must be placed with the bolt on the opposite side (diagonally opposite), as shown in Figure 6.4 .

To facilitate assembly, the bases may have the following features:

Shoulders and/or recesses;

Anchor bolts with loose plates;

Bolts cast in the concrete;

Leveling screws;

Positioning screws;

Steel & cast iron blocks, plates with flat surfaces.

Figure 6.4 - Motor installed on sliding base

After completing the installation, it is recommended that all exposed machined surfaces are coated with suitable rust inhibitor.

Figure 6.2 - Motor installed on concrete base Figure 6.3 - Motor installed on metallic base A

F1 F1

F2 F2

A

M8-85

Manual of Electric Motors 81

N

G L

IS

H www.weg.net

6.2.1. Foot mounted motors

The drawings of the mounting hole dimensions for NEMA or IEC motors can be checked in the respective technical catalogue.

The motor must be correctly aligned and leveled with the driven machine. Incorrect alignment and leveling may result in bearing damage, generate excessive vibration and even shaft distortion/breakage.

For more details, see section 6.3 and 6.6. The thread engagement length of the mounting bolt should be at least 1.5 times the bolt diameter. This thread engagement length should be evaluated in more severe applications and increased accordingly.

Figure 6.6 shows the mounting system of a foot mounted motor indicating the minimum required thread engagement length.

Figure 6.6 - Mounting system of a foot mounted motor

L = 1.5 x D

D

6.2.2. Flange mounted motors

The drawings of the fl ange mounting dimensions, IEC and NEMA fl anges, can be checked in the technical catalogue.

The coupling of the driven equipment to the motor fl ange must be properly dimensioned to ensure the required concentricity of the assembly.

Depending on the fl ange type, the mounting can be performed from the motor to the driven equipment fl ange

(fl ange FF (IEC) or D (NEMA)) or from the driven equipment fl ange to the motor (fl ange C (DIN or NEMA)).

For the mounting process from the driven equipment fl ange to the motor, you must consider the bolt length, fl ange thickness and the thread depth of the motor fl ange.

If the motor fl ange has tapped through-holes, the length of the mounting bolts must not exceed the tapped through-hole length of the motor fl ange, thus preventing damage to the winding head.

6.2. MOTOR MOUNTING

Footless motors supplied with transportation devices, according to Figure 6.5, must have their devices removed before starting the motor installation.

Figure 6.5 - Detail of the transportation devices for footless motors

M8-86

Manual of Electric Motors82

N

G L

IS

H www.weg.net

For fl ange mounting the thread engagement length of the mounting bolt should be at least 1.5 times the bolt diameter. In severe applications, longer thread engagement length may be required.

In severe applications or if large motors are fl ange mounted, a foot or pad mounting may be required in addition to the fl ange mounting (Figure 6.7). The motor must never be supported on its cooling fi ns.

6.2.3. Pad mounted motors

Typically, this method of mounting is used in axial fans. The motor is fi xed by tapped holes in the frame. The dimensions of these tapped holes can be checked in the respective product catalogue. The selection of the motor mounting rods/bolts must consider the dimensions of the fan case, the installation base and the thread depth in the motor frame.

The mounting rods and the fan case wall must be suffi ciently stiff to prevent the transmission of excessive vibration to the machine set (motor & fan). Figure 6.8 shows the pad mounting system.

Figure 6.7 - Mounting method of fl ange mounted motors with frame base support

Figure 6.8 - Mounting of the motor inside the cooling duct

Note:

When liquid (for example oil) is likely to come into contact with the shaft seal, please contact your local WEG representative.

The balance quality grade meets the applicable standards for each product line.

The maximum balancing deviation must be recorded in the installation report.

The transmission elements, such as pulleys, couplings, etc., must balanced with “half key” before they are mounted on the motor shaft.

6.3. BALANCING

Unbalanced machines generate vibration which can result in damage to the motor. WEG motors are dynamically balanced with “half key” and without load (uncoupled). Special balancing quality level must be stated in the Purchase Order.

6.4. COUPLINGS

Couplings are used to transmit the torque from the motor shaft to the shaft of the driven machine. The following aspects must be considered when couplings are installed:

Use proper tools for coupling assembly & disassembly to avoid damages to the motor and bearings;

Whenever possible, use fl exible couplings, since they can absorb eventual residual misalignments during the machine operation;

The maximum loads and speed limits informed in the coupling and motor manufacturer catalogues cannot be exceeded;

Level and align the motor as specifi ed in sections 6.5 and 6.6, respectively.

M8-87

Manual of Electric Motors 95

N

G L

IS

H www.weg.net

L

D

Figure 7.1- Minimum clearance to the wall

7. COMMISSIONING

7.1. INITIAL START-UP

After finishing the installation procedures and before starting the motor for the first time or after a long period without operation, the following items must be checked:

If the nameplate data (voltage, current, connection diagram, degree of protection, cooling system, service factor, etc.) meet the application requirements;

If the machine set (motor + driven machine) has been mounted and aligned correctly;

If the motor driving system ensures that the motor speed does not exceed the max. allowed speed indicated in Table 6.10;

Measure the winding insulation resistance, making sure it complies with the specified values in item 5.4;

Check the motor rotation direction;

Inspect the motor terminal box for damage and ensure that it is clean and dry and all contacts are rust-free, the seals are in perfect operating conditions and all unused threaded holes are properly closed thus ensuring the degree of protection indicated on the motor nameplate;

Check if the motor wiring connections, including grounding and auxiliary equipment connection, have been carried out properly and are in accordance with the recommendations in item 6.9;

Check the operating conditions of the installed auxiliary devices (brake, encoder, thermal protection device, forced cooling system, etc.);

Check bearing operating conditions. If the motors are stored and/or installed for more than two years without running, it is recommended to change the bearings, or to remove, wash, inspect and relubricate them before the motor is started. If the motor is stored and/or installed according to the recommendations described in item 5.3, lubricate the bearings as described in item 8.2. For the bearing condition evaluation, it is recommended to use of the vibration analysis techniques: Envelope Analysis or Demodulation Analysis.

For roller bearing motors with oil lubrication, ensure:

The oil level should be in the center of the sight glass (see Figure 8.1 and 8.2);

That if the motor is stored for a period equal or longer than the oil change interval, the oil must be changed before starting the motor.

When motors are fitted with sleeve bearings, ensure:

Correct oil level for the sleeve bearing. The oil level should be in the center of the sight glass (see Figure 8.3);

That the motor is not started or operated with axial or radial loads;

That if the motor is stored for a period equal or longer than the oil change interval, the oil must be changed before starting the motor.

Inspect the capacitor operating condition, if any. If motors are installed for more than two years, but were never commissioned, it is recommended to change the start capacitors since they lose their operating characteristics;

Ensure that the air inlet and outlet opening are not blocked. The minimum clearance to the nearest wall (L) should be at least ¼ of the fan cover diameter (D), see Figure 7.1. The intake air temperature must be at ambient temperature.

M8-100

Manual of Electric Motors108

N

G L

IS

H www.weg.net

Terminal box cover

Nameplate

Terminal box

Eyebolt

Shaft

Rotor Key

Frame

Fan

NDE shield

DE shield

DE bearing cap

NDE bearing cap

W-ring

Wound stator

Bearing

Terminal box support

Fan cover

Figure 8.4 - Exploded view of the components of a W22 motor

8.5. SPARE PARTS

When ordering spare parts, always provide complete motor designation, indicating the motor type, the code number and the serial number, which are stated on the motor nameplate.

Spare parts must always be purchased from WEG authorized Service Centers. The use of non-original spare parts can cause motor failure, performance drop and void the product warranty.

The spare parts must be stored in a clean, dry and properly ventilated room, with relative air humidity not exceeding 60%, with ambient temperature between 5 °C and 40 °C, free of dust, vibrations, gases, corrosive smokes and at constant temperature. The spare parts must be stored in their normal mounting position without placing other components onto them.

M8-113

Manual of Electric Motors110

N

G L

IS

H www.weg.net

Problem Possible cause Corrective action

Motor does not start, neither coupled nor decoupled

Power cables are interrupted Check the control panel and the motor power supply cables

Blown fuses Replace blown fuses

Wrong motor connection Correct the motor connection according to connection diagram

Locked rotor Check motor shaft to ensure that it rotates freely

The motor starts at no-load, but fails when load is applied. It starts very slowly and does not reach the rated speed

Load toque is too high during start-up Do not start the motor on load

Too high voltage drop in the power cables

Check the installation dimensioning

(transformer, cable cross section, relays, circuit breakers, etc.)

Abnormal/excessive noise

Defective transmission component or defective driven machine

Check the transmission force, the coupling and the alignment

Misaligned / unleveled base Align / level the motor with the driven machine

Unbalanced components or unbalanced driven machine Balance the machine set again

Different balancing methods used for motor and coupling balancing (halve key, full key) Balance the motor again

Wrong motor direction of rotation Reverse the direction of rotation

Loose bolts Retighten the bolts

Foundation resonance Check the foundation design

Damaged bearings Replace the bearings

Motor overheating

Insufficient cooling

Clean air inlet and outlet and cooling fins

Check the minimum required distance between the fan cover and nearest walls.

See item 7

Check air temperature at inlet

Overload Measure motor current, evaluate motor application and if required, reduce the load

Number of starts per hour is too high or the load inertia moment is too high Reduce the number of starts per hour

Power supply voltage too high

Check the motor power supply voltage.

Power supply voltage must not exceed the tolerance specified in item 7.2

Power supply voltage too low

Check the motor power supply voltage and the voltage drop. Power supply voltage must not exceed the tolerance specified in item 7.2

Interrupted power supply Check the connection of the power cables

Voltage unbalance at the motor terminals

Check for blown fuses, wrong commands, voltage unbalance in the power line, phase fault or interrupted power cables

Direction of rotation is not compatible with the unidirectional fan

Check if the direction of rotation matches the rotation arrow indicated on end shield

Bearing overheating

Excessive grease/oil Clean the bearing and lubricate it according to the provided recommendations

Grease/oil aging

The used grease/oil does not matches the specified one

Lack of grease/oil Lubricate the bearing according to the provided recommendations

Excessive axial or radial forces due to the belt tension

Reduce the belt tension

Reduce the load applied to the motor

10. TROUBLESHOOTING CHART X SOLUTIONS

This troubleshooting chart provides a basic list of problems that may occur during motor operation, possible causes and recommended corrective actions. In case of doubts, please contact WEG Service Center.

M8-115

Sung-Am

04 Mechanical - 1

표지