Alfalaval LKB Manual de usuario

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IM70730-GB5 1999-06

Instruction Manual

LKB Automatic or Manual Butterfly Valve

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Name Title

Company Signature

Alfa Laval

6000 Kolding

+45 79 32 22 00

Company Name

Address

Phone No.

hereby declare that

Denomination Type Year

Declaration of Conformity

The designating company

Designation

Was manufactured in conformity with the provisions in the COUNCIL DIRECTIVE of 4 June

989 on mutual approximation of the laws of the Member States on the safety of machines (89/

392/EEC as amended by directives 9 /368/EEC and 93/44/EEC) with special reference to Annex

of the directive on essential safety and health requirements in relation to the construction

and manufacture of machines.

Bjarne Søndergaard Vice Pre ident, R & D

Alfa Laval

Automatic or Manual Butterfly Valve LKB

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This manual is divided into main sections. - See

below.

Table of contents

Safety

Installation

Operation

Maintenance

Technical data

1. Important information ................................. 2

2. Warning signs ........................................... 2

3. Safety precautions .................................... 3

1. Unpacking/ Delivery ................................... 4

2. General installation ...................................

3. Welding .................................................... 6

4. Fitting actuator/bracket/handle .................. 7

. Indication and control equipment ............... 8

1. Operation .................................................. 9

2. Fault finding ............................................ 10

3. Recommended cleaning .......................... 11

1. General maintenance .............................. 12

2. Dismantling of valve - LKB/LKB-2 ............ 14

3. Assembly of valve - LKB/LKB-2 ............... 1

4. Dismantling of valve - LKB-F .................... 16

. Assembly of valve - LKB-F ...................... 17

6. Dismantling of actuator ........................... 18

7. Assembly of actuator .............................. 19

1. Technical data ......................................... 20

1. Parts list

- LKB/LKB-2/LKB-F .......................... 22+24

- Handles ......................................... 26+28

- LKLA/LKLA-T, ø8 mm ................... 30+32

- LKLA/LKLA-T, ø133mm ................. 34+36

2. Exploded drawing

- LKB/LKB-2/LKB-F ................................ 23

- Handles ............................................... 27

- LKLA/LKLA-T, ø8 mm ......................... 31

- LKLA/LKLA-T, ø133mm ....................... 3

3. Drawing

- LKB/LKB-2/LKB-F ................................ 2

- Handles ............................................... 29

- LKLA/LKLA-T, ø8 mm ......................... 33

- LKLA/LKLA-T, ø133mm ....................... 37

Spare Parts

Drawings/Parts list

Appendix

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Indicates that special procedures must be fol-

lowed to avoid severe personal injury.

Indicates that special procedures must be fol-

lowed to avoid damage to the valve.

Indicates important information to simplify

practices or to make them clearer.

WARNING! :

CAUTION! :

NOTE! :

General warning.

Caustic agents.

2. Warning signs

Safety

Unsafe practices and other important information are

emphasized in this manual.

Warnings are emphasized by means of special signs.

1. Important information

Always read the manual before usin the valve!

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. Safety precautions

Installation:

Operation

Maintenance:

All warnings in the manual are summarized on this

page.

" ushrooms" = Fastening connections on the end

cap.

Pay special attention to the instructions below so that

severe personal injury or damage to the valve are

avoided.

Safety

- Always observe the technical data (see page

20).

- Always release compressed air after use.

- Never touch the coupling between the valve

body and the actuator if compressed air is sup-

plied to the actuator.

Always observe the technical data (see page 20).

Never touch the valve or the pipelines when pro-

cessing hot liquids or when sterilizing.

Never touch the coupling between the valve body

and the actuator if compressed air is supplied to

the actuator.

Always handle lye and acid with great care.

-Always observe the technical data (see page

20)

-Always release compressed air after use.

- The valve must never be hot when servicing it.

- The valve/actuator and the pipelines must never

be pressurised when servicing the valve/

actuator.

Never stick your fingers through the valve ports if

the valve is supplied with compressed air.

Never touch the coupling between the valve body

and the actuator if compressed air is supplied to

the actuator.

The actuator springs are not caged (ø8 mm,

NC/NO).

- Never use compressed air for removing the

end cap of the actuator.

- Always fit the end cap with the mushrooms

turned outwards and position it correctly be-

fore supplying compressed air to the actuator.

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Installation

The instruction manual is part of the delivery.

Study the instructions carefully.

The items refer to the drawings and parts list on the

pages 22-25.

The valve is supplied as separate parts as standard

(for welding).

The valve is assembled before delivery, if it is

supplied with fittings (LKB/LKB-2).

1. Unpacking/Delivery

NOTE!

We cannot be held responsible for incorrect

unpacking.

Separate parts for welding!

Check the delivery:

1. Complete valve (see 2).

2. Complete actuator, if supplied (see 3).

3. Bracket for actuator, if supplied (see 3).

4. Complete handle, if supplied.

. Delivery note.

6. Instruction manual.

Standard delivery of valve parts:

1. Two valve body halves (1).

2. Valve disc (2) fitted in seal ring ( ).

3. Two bushes (3.4) fitted on the disc stem.

4. A set of screws and nuts (6).

. Two Flanges (7) and two flange seal rings

(8), (LKB-F).

LKLA - ø133mm

Coupling

elivery of actuator and bracket:

1. Complete actuator with coupling and acti-

vating ring (ø8 mm) or indication pin

(ø133mm).

2. Bracket with screws for the actuator.

Bracket with

screws

Remove

packing

materials!

Valve

Inspection!

1. Inspect the valve/valve parts for visible

transport damages.

2. Inspect the handle or the actuator, if sup-

plied.

Valve

Caution!

1. Avoid damaging the valve/valve parts.

2. Avoid damaging the handle or the actuator,

if supplied.

Valve

1. Clean the valve/valve parts for possible

packing materials.

2. Clean the handle or the actuator, if supplied.

Handle

Actuator

Handle

Actuator

Handle

Actuator

LKB-F (only for welding)LKB/LKB-2

LKLA - ø8 mm

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Study the instructions carefully.

The valve has welding ends as standard but can also

be supplied with fittings (not LKB-F).

NC = Normally closed.

NO = Normally open.

A/A = Air/air activated.

2. General installation

Installation

Air connection of actuator:

Connect compressed air correctly.

Pay special attention to the warnings!

NC NO A/A

Air Air Air

R1/8"(BSP)

Position of actuator:

Position the water rejector on the actuator

correctly. (The actuator can be installed in any

position).

Turn the ventilation

opening downwards!

Fittings:

Ensure that the connections are tight.

Remember

seal rings!

Avoid stressing the valve.

Pay special attention to:

- Vibrations.

- Thermal expansion of the tubes.

- Excessive welding.

- Overloading of the pipelines.

Risk of

damage!

NOTE!

We cannot be held responsible for incorrect

installation.

-Always observe the technical data

(see page 20).

-Always release compressed air after

use.

-Never touch the coupling between the

valve body and the actuator if compres-

sed air is supplied to the actuator.

Pre-use check:

Open and close the valve several times to

ensure that the valve disc moves smoothly

against the sealring.

Pay special attention to the warnings!

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Study the instructions carefully.

The valve is supplied as separate parts to facilitate

the welding.

LKB: For ISO tubes.

LKB-2: For DIN tubes.

LKB-F: With flange connection.

. Welding - LKB/LKB-2

Installation

1. Weld the valve body halves into the pipe-

lines.

2. Maintain the minimum clearance (A) so that

the actuator can be removed.

3. If welding both valve body halves, ensure

that they can be moved axially B1 mm, so

that the valve parts can be removed.

4. Assemble the valve in accordance with the

instructions 1- on page 1 after the weld-

ing.

Pre-use check - LKB/LKB-2/LKB-F:

Open and close the valve several times to

ensure that the valve disc moves smoothly

against the seal ring.

Pay special attention to the warnings!

. Welding - LKB-F

1. Weld the flanges into the pipelines.

2. Maintain the minimum clearances (A and

B2) so that the actuator and the valve parts

can be removed.

3. Assemble the valve in accordance with the

instructions 1- on page 17 after the

welding.

B1(mm) B2(mm)

1" 20 43

1½" 20 43

2" 20 47

2½" 24 46

3" 24 59

4" 37 59

DN25 20 43

DN32 20 43

DN40 20 43

DN50 20 47

DN65 24 59

DN80 23 59

DN100 37 59

DN125 40 63

DN250 41 79

A(mm) Ø85 Ø133

LKLA LKLA-T LKLA LKLA-T

1" 245

1½" 245

2" 255

2½" 265

3" 265

4" 290 +172 420 +172

DN25 245 (incl. (incl.

DN32 245 t p t p

DN40 250 unit) unit)

DN50 260

DN65 270

DN80 275

DN100 290 420

DN125 315 440

DN250 325 445

Caution!

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Installation

Study the instructions carefully and pay special

attention to the warnings!

NC = Normally closed.

NO = Normally open.

A/A = Air/air activated.

4. Fitting actuator/bracket/handle on the valve (optional extras)

Handle/indication:

1. Fit the standard handle on the valve so that

the screw can enter the hole in the disc

connection.

2. Fit the handle with position indication as

shown and in accordance with the instruc-

tions 3-4 on page 1 .

Handle with

position

indication

Standard

handle

Pre-use check:

Open and close the valve several times to

ensure that it operates smoothly.

Pay special attention to the warnings!

Actuator/bracket - NO:

1. Ensure that the valve is open by checking

the position of the groove of the disc stem

top.

2. Fit the actuator/bracket in accordance with

instruction 4 on page 1 .

Actuator/bracket - A/A:

1. Ensure that the valve is open by checking

the position of the groove of the disc stem

top.

2. Supply compressed air to the actuator.

3. Fit the actuator/bracket in accordance with

instruction 4 on page 1 .

Actuator/bracket - NC:

1. Ensure that the valve is closed by checking

the position of the groove of the disc stem

top.

2. Fit the actuator/bracket in accordance with

instruction 4 on page 1 .

Screw for

bracket

Bracket

Drain hole

Direction

of rotation

Activating

ring/ indica-

tion pin

No pressure!

Bracket/indication:

1. Fit the bracket as shown.

2. Fit and tighten the screws.

3. Fit the activating ring/indication pin as

shown.

NC actuator

Closed!

Open!

NO actuator

No pressure!

A/A actuator

Air pressure!

Open!

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