Alfalaval ARC series Manuel utilisateur

Instruction Manual

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ARC with reduced stroke Aseptic Remote-Controlled Valve

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IM70815EN 2010-03

1 EC Declaration of Conformity

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Safety

Installation

Operation

Maintenance

Technical data

Drawings/Parts list

This manual is divided into main sections. - See

below.

Table of contents

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

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

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

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

2. General installation ..................................... 5

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

4. Fitting of oil damper (optional extra) ........... 7

5. Fitting of indication equipment

(optional extra) ............................................ 8

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

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

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

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

2. Dismantling of valve ................................. 14

3. Reassembly of valve ................................. 16

4. Dismantling of actuator ............................. 18

5. Reassembly of actuator ............................ 19

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

1. Parts list

- ARC with reduced stroke........ 22+24+26+28

- Oil damper......................................... 30+32

2. Exploded drawing

- ARC with reduced stroke................... 23+27

- Oil damper............................................... 31

3. Drawing

- ARC with reduced stroke................... 25+29

- Oil damper............................................... 33

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 using the valve!

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! :

2. Warning signs

General warning.

Caustic agents.

Installation:

Always

Never

Operation:

Never

Always

Never

Always

Maintenance:

Always

Never

Transportation:

Always

secure that compressed air is released

Always

secure that all connections is disconnected before attemt to remove the valve from the installation

Always

drain liquid out of valves before transportation

Always

used predesigned lifting points if defined

Always

secure sufficient fixing of the valve during transportation - if special designed packaging material is available it

must be used

Installation: :

Operation: :

Maintenance: :

3.Safety precautions

-Always read the technical data thoroughly

(see page 20).

-Always release compressed air after use.

Never touch the clip assembly or the actuator

piston rod if the actuator is supplied with com-

pressed air.

Never touch the valve or the pipelines when

processing hot liquids or when sterilizing.

-Never dismantle the valve when it is hot.

-Never dismantle the valve with valve and

pipelines under pressure.

-Always read the technical data thoroughly

(see page 20).

-Always release compressed air after use.

Never touch the valve or the pipelines when

processing hot liquids or when sterilizing.

Never touch the clip assembly or the actuator

piston rod if the actuator is supplied with com-

pressed air.

Always handle lye and acid with great care.

-Always read the technical data thoroughly

(see page 20).

-Always release compressed air after use.

-Never service the valve when it is hot.

-Never service the valve with valve and pipe-

lines under pressure.

Never stick your fingers through the valve ports

if the actuator is supplied with compressed air.

Never touch the clip assembly or the actuator

piston rod if the actuator is supplied with com-

pressed air.

All warnings in the manual are summarized on this

page. Pay special attention to the instructions below so that

severe personal injury and/or damage to the valve

are avoided.

Safety

Installation

The instruction manual is part of the delivery.

Study the instructions carefully.

The items refer to the drawings and the parts list on

pages 22-29.

The valve is supplied as separate parts as standard

(for welding).

The valve is assembled before delivery, if it is

supplied with fittings.

NOTE!

We cannot be held responsible for incorrect

unpacking.

Remove possible packing materials from the

valve/valve parts.

Check the delivery:

1. Complete valve, stop valve or change-over

valve (see 2 and 3).

2. Delivery note.

3. Instruction Manual.

1. Unpacking/Delivery

Delivery of stop valve:

1. Complete actuator with bonnet (8).

2. Clip assembly (11).

3. Intermediate ring (13).

4. Diaphragm stem seal (20).

5. Two clamps (15).

6. Valve stem unit (19, 22).

7. Washer (14).

8. Valve body (18).

Delivery of change-over valve:

1. Complete actuator with bonnet (8).

2. Clip assembly (11).

3. Intermediate ring (13).

4. Diaphragm stem seal (20).

5. Three clamps (15).

6. Valve stem unit (19, 22).

7. Two valve bodies (16, 18).

8. Valve body seal ring (17).

Inspect the valve/valve parts for visible transport

damage.

-Always read the technical data

thoroughly (see page 20).

-Always release compressed air after

use.

NOTE!

We cannot be held responsible for incorrect

installation.

Installation

Study the instructions carefully and pay special

attention to the warnings!

The valve has welding ends as standard but can also

be supplied with fittings.

NO = Normally open.

NC = Normally closed.

A/A = Air/air activated.

2. General installation

Never touch the clip assembly or the

actuator piston rod if the actuator is

supplied with compressed air.

Avoid stressing the valve.

Pay special attention to:

- Vibrations.

- Thermal expansion of the tubes.

- Excessive welding.

- Overloading of the pipelines.

It is recommended to install the valve so that:

- The actuator is not turned downwards.

- The flow is against the closing direction

to avoid water hammer.

Moving parts!

Fittings:

Ensure that the connections are tight (remember

seal rings).

Air connection: R1/8" (BSP)

Connect air correctly:

- NO: Top connection.

- NC: Side connection.

- A/A: Top and side connection.

Risk of damage!

Installation

Study the instructions carefully.

The valve is supplied as separate parts to facilitate

the welding.

The items refer to the drawings and the parts list on

pages 22-29.

Check the valve for smooth operation after welding.

3. Welding

Always weld the valve so that the valve body seal

ring can be replaced (change-over valve).

Maintain the minimum clearances (A and B) so

that the lower valve plug (change-over valve)

and the actuator with the internal valve parts

can be removed.

Stop valve:

Reassemble the valve in accordance with instruc-

tions 4-11 on pages 16-17.

Pay special attention to the warnings!

Change-over valve:

Reassemble the valve in accordance with in-

structions 3-11 on pages 16-17.

Pay special attention to the warnings!

Pre-usecheck:

1. Supply compressed air to the actuator.

2. Open and close the valve several times to

ensure that it operates smoothly.

Pay special attention to the warnings!

Valve size A (mm) B1 (mm) B2 (mm)

38 mm 160 550 660

51 mm 160 550 660

Change-over valve

(upper valve body)

Stop valve

B2(incl. top unit)

Weld carefully!

Installation

The valve can be fitted with an oil damper if water

hammer occurs when the valve closes in the flow

direction.

Study the instructions carefully and pay special

attention to the warnings!

NC = normally closed

A/A = air/air activated

4. Fitting of oil damper (optional extra)

Fill further oil through the plug hole if large air

bubbles occur under the plexiglas cover.

NOTE!

There should be a small air bubble which equal-

izes changes in the pressure because of tem-

perature changes.

Removal/dismantling:

Remove the damper by following the instructions

in reverse order.

Pre-use check:

1. Supply compressed air to the actuator.

2. Open and close the valve several times to

ensure that it operates smoothly.

Pay special attention to the warnings!

Never touch the valve or the pipelines

when processing hot liquids or when

sterilizing.

Burning danger!

1. Supply compressed air to the actuator.

Pay special attention to the warnings!

2. Fit the damper so that damper piston rod

(72) enters actuator piston rod (8).

Oil type SAE 40

Ensure that

no other

equipment

is fitted on the

actuator top!

1. Fit protective hood (84).

2. The valve is now ready for operation.

1. Connect the two piston rods by means of

clip (71).

2. Release compressed air to the actuator.

Pay special attention to the warnings!

Air (NC, A/A)

Pre-use check:

1. Supply compressed air to the actuator.

2. Open and close the valve several times to

ensure that it operates smoothly.

Pay special attention to the warnings!

Installation

The valve can be fitted with the top units LKT-N and

LKT-S. It can also be fitted with an indication unit. Study the instructions carefully and pay special

attention to the warnings!

5. Fitting of indication equipment (optional extra)

LKT-N Indication unit

LKT-S

Atmospheric

pressure required!

-Never dismantle the valve when it is

hot.

-Never dismantle the valve with valve

and pipelines under pressure.

CAUTION!

The indication and control equipment must be

electrically installed by authorized personnel.

- Top units LKT-N and LKT-S:

(see the separate instruction manuals).

- Indication unit:

(see the instructions on page 8).

1. Fit the ring on the plug stem.

2. Reassemble the valve in accordance with

instructions 10-11 on page 17.

Pay special attention to the warnings!

Dismantle the valve in accordance with instruc-

tions 1-2 on page 14.

Pay special attention to the warnings!

Burning

danger!

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