Alfalaval ARC series Bedienungsanleitung
Instruction Manual
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IM70815EN 2010-03
1 EC Declaration of Conformity
4HE DESIGNATING COMPANY
!LFA ,AVAL
#OMPANY .AME
!LBUEN $+ +OLDING $ENMARK
!DDRESS
0HONE .O
HEREBY DECLARE THAT
!SEPTIC2EMOTE#ONTROLLED6ALVE!2#WITHREDUCEDSTROKE
$ENOMINATION 4YPE 9EAR
IS IN CONFORMITY WITH THE FOLLOWING DIRECTIVES
-ACHINERY $IRECTIVE %#
0RESSURE %QUIPMENT $IRECTIVE %# CATEGORY AND SUBJECTED TO ASSESSMENT PROCEDURE -ODULE !
-ANAGER 0RODUCT #ENTRES #OMPACT
(EAT %XCHANGERS &LUID (ANDLING
"JARNE 3NDERGAARD
4ITLE .AME
!LFA ,AVAL +OLDING
#OMPANY 3IGNATURE
$ESIGNATION
1
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
2
:
:
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
Always
Never
Never
Never
Never
Operation:
Never
Never
Always
Always
Never
Never
Always
Always
Maintenance:
Always
Always
Never
Never
Never
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
3
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
4
4
2
6
1
5
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.
3
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.
5
-Always read the technical data
thoroughly (see page 20).
-Always release compressed air after
use.
NOTE!
We cannot be held responsible for incorrect
installation.
1
3
5
4
2
6
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!
6
1
2
4
3
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
B1
B2(incl. top unit)
B1
B2(incl. top unit)
Weld carefully!
A
7
12
56
34
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)
Air (NC, A/A)
8
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!
1
3
2
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)
4
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!
5
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