VAT 48 Series Assembly instructions

Installation, Operating &
Maintenance Instructions
857018EA
Edition
2017
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All-metal gate valve
with extended pneumatic actuator and dust protection system
Series 48
DN 200 mm (I.D. 8")
This manual is valid for the following product ordering number:
48146-RE24-ASG .
Sample pictures

Series
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Imprint
Manufacturer
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Website:
Phone:
Fax:
Email:
www.vatvalve.com
[phone]
[phone]
[email protected]om
Publisher VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Editor VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Print VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Copyright © VAT Vakuumventile AG 2017
No part of these Instructions may be reproduced in any way (photo-
copies, microfilms or any other reproduction processes) nor may it be
manipulated with electronic systems, duplicated or distributed without
written permission from VAT. Offenders are liable to pay damages.
The original VAT firmware and updated state of the art versions of the
VAT firmware are intended for use with VAT products. The VAT firmware
contains a limited, time unlimited user license. The VAT firmware may not
be used for purposes other than those intended nor is it permitted to
make copies of the VAT firmware. In particular, it is strictly forbidden to
give copies of the VAT firmware to other people.
The use of trade names, brand names, trademarks, etc. in these
Instructions does not entitle third parties to consider these names to be
unprotected and to use them freely. This is in accordance with the
meaning of the laws and acts covering brand names and trademarks.

Series 48 DESCRIPTION OF PRODUCT
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Contents
1 Description of product........................................................................4
1.1 Identification of product....................................................................................4
1.2 Use of product.................................................................................................4
1.3 Related documents..........................................................................................4
1.4 Important information.......................................................................................4
1.5 Technical data.................................................................................................4
2 Safety ...................................................................................................5
2.1 Compulsory reading material...........................................................................5
2.2 Danger levels ..................................................................................................5
2.3 Personnel qualifications...................................................................................6
2.4 Safety labels....................................................................................................6
3 Design and Function...........................................................................7
3.1 Design.............................................................................................................7
3.2 Function..........................................................................................................8
4 Installation...........................................................................................9
4.1 Unpacking.......................................................................................................9
4.2 Installation into the system.............................................................................10
4.2.1 Preparation for installation .................................................................11
4.2.2 Mounting to the system......................................................................12
4.3 Compressed air connection ...........................................................................13
4.4 Electrical connection......................................................................................14
5 Operation...........................................................................................15
5.1 Normal operation...........................................................................................15
5.2 Operation under increased temperature.........................................................16
5.3 Bake-out........................................................................................................17
5.4 Behavior in case of air pressure drop.............................................................17
5.5 Behavior in case of power failure...................................................................17
5.6 Trouble shooting............................................................................................18
6 Maintenance ......................................................................................19
6.1 Maintenance intervals....................................................................................19
7 Repairs...............................................................................................20
8 Dismounting and Storage.................................................................21
8.1 Dismounting..................................................................................................22
8.2 Storage .........................................................................................................22
9 Packaging and Transport.................................................................23
9.1 Packaging .....................................................................................................24
9.2 Transport.......................................................................................................24
10 Disposal.............................................................................................25
11 Spare parts ........................................................................................26

DESCRIPTION OF PRODUCT Series
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1 Description of product
1.1 Identification of product
The fabrication number and order number are fixed on the product directly or by means of
an identification plate.
made in Switzerland
Fabrication No.:
48 . .- . . . .- . . . ./ . . . .
A - . . . . . .


Fabrication number
Order number
1.2 Use of product
Use product for clean and dry vacuum applications only. Other applications are only allowed
with the written permission of VAT.
1.3 Related documents
• Product data sheet
• Dimensional drawing
1.4 Important information
This symbol points to a very important statement that requires particular
attention.
Example
:
VAT disclaims any liability for damages resulting from inappropriate packaging.
1.5 Technical data
See product data sheet.
For weight of valve see product data sheet.

Series 48 SAFETY
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2 Safety
2.1 Compulsory reading material
Read this chapter prior to performing any work with or on the product. It contains important
information that is significant for your own personal safety. This chapter must have been
read and understood by all persons who perform any kind of work with or on the product
during any stage of its serviceable life.
NOTICE
Lack of knowledge
Failing to read this manual may result in property damage.
Firstly, read manual.
These Installation, Operating & Maintenance Instructions are an integral part
of a comprehensive documentation belonging to a complete technical
system. They must be stored together with the other documentation and
accessible for anybody who is authorized to work with the system at any
time.
2.2 Danger levels
DANGER
High risk
Indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING
Medium risk
Indicates a hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION
Low risk
Indicates a hazardous situation which, if not avoided, may result in minor or
moderate injury.
NOTICE
Command
Indicates a hazardous situation which, if not avoided, may result in property
damage.

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2.3 Personnel qualifications
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
2.4 Safety labels
Label Part No. Label size
(mm) Location on valve
DN 16–100: T-9001-155
DN 160–320: T-9001-156 20 × 20 80 × 80 On protective covers of flanges

Series 48 DESIGN AND FUNCTION
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3 Design and Function
3.1 Design
Figure 3-1
1 Actuator
2 Valve body
3 Connecting flange
4 Distance piece

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3.2 Function
Valve is closed and opened pneumatically.
Closing: The valve mechanism including protection ring (8) moves towards the valve
aperture until it touches the mechanical stop (4). Due to continued pressure, valve gate (1)
with the assembled VATRING (7) and counter plate (2) spread apart from the guide plate
(3). That effect leak tight closing.
Opening: Valve gate (1) and counter plate (2) are retracted and valve mechanism moves
back into the valve body until it touches a mechanical stop at the bonnet flange. Due to
continued pressure, the protection ring (8) is activated and finally separates the valve
aperture from the valve body volume. Now the mechanism is protected from dust
contamination.
OPEN
CLOSED
Figure 3-2 (sample pictures)
1 Valve gate
2 Counter plate
3 Guide plate
4 Spring stop
5 Leaf spring
6 Support
7 VATRING
8 Protection ring
Valve seat side

Series 48 INSTALLATION
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4 Installation
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
WARNING
Heavy weight
Physical overstraining.
Use a crane to lift the product.
4.1 Unpacking
•
Make sure that the supplied products are in accordance with your order.
•Inspect the quality of the supplied products visually. If it does not meet
your requirements, please contact VAT immediately.
•Store the original packaging material. It may be useful if products must be
returned to VAT.
Open the outer plastic bag protecting the valve only at the points where you
need access to the eyebolts (1) for fastening the crane hooks; see «Figure
4-1» on page 10. Keep valve in the plastic bag until it is being installed into
the system.
NOTICE
Wrong lifting
Valve may crash and get damaged.
Use only the eyebolts shown in the dimensional drawing and in «Figure 4-1»
on page 10 to lift the valve. Using any other components (e. g. position
indicators, solenoids) to lift the valve is strictly forbidden.
NOTICE
Sensitive product
Valve parts may get damaged.
–
When lifting the valve, pay attention that the valve does not touch any solid
objects.
–
Lift valve carefully and put it down on a clean surface or mount it to a clean
system.

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Use a crane for lifting valve out of the transport box; see «Figure 4-1».
Weight of valve; see chapter «1.5 Technical data».
1 Eyebolts
2 Lifting ropes
A Valve movement
direction
B Support required
to stabilize the
valve
Figure 4-1
4.2 Installation into the system
WARNING
Movable parts
Human body parts may get jammed and severely injured.
Do not connect or supply electrical power and compressed air before the
product is completely mounted in the system.
NOTICE
Contamination
Product may get contaminated.
Always wear cleanroom gloves when handling the product.
NOTICE
Force effect from other components of the system
Valve body may get deformed and/or malfunctions may occur.
– Do not use valve to support other components.
– Make sure that forces from other components do not impair the valve;
use bellows sections, for instance.

Series 48 INSTALLATION
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4.2.1 Preparation for installation
WARNING
Danger of injury in case of insufficient skills
Inappropriate handling may cause serious injury or property damage.
Make sure that the valve does not topple or fall down while removing the
protective covers from the flanges.
NOTICE
Sensitive product
Valve parts may get damaged.
When removing the protective covers from the flanges, be careful to avoid
damage to the valve.
1. Remove plastic bag.
2. Remove protective covers (1); see «Figure 4-2».
1 Protective covers
Figure 4-2
Store protective covers. They may be useful when valve needs to be
repacked.
3. Clean surface with clean, oil free compressed air.

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4.2.2 Mounting to the system
The valve seat side is marked with the symbol «∇» on flange «A»;
see «Figure 4-3».
1 Flange B
2 Flange A
3 Marking for valve seat side
(symbol «∇»)
Figure 4-3
1. Mount valve to your system by welding it into your vacuum process line appropriately.

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4.3 Compressed air connection
WARNING
Valve in open or closed position
Risk of injury when compressed air is connected to the valve.
Connect compressed air only when:
– valve is installed in the vacuum system
– moving parts cannot be touched
NOTICE
Wrong sequence of connections
Valve mechanism may get damaged when electrical power is being
connected before compressed air is connected.
Always connect compressed air before connecting electrical power.
Use clean, dry or slightly oiled air only.
Admissible air pressure range, see product data sheet.
Supply compressed air pressure only after the supply line is properly
mounted to the actuator.
2. Connect compressed air supply line according the specification on the product data
sheet and; see «Table 4-1».
Execution Procedure
Without solenoid
valve
48 ... - . E24- ....
Connect relevant compressed air line to connection CLOSE.
Afterwards, connect relevant compressed air line to connection
OPEN.
Supply admissible compressed air to connection “close” first!
Table 4-1

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4.4 Electrical connection
DANGER
Electric shock
Parts being under voltage will result in serious injury or death.
Do not touch parts being under voltage.
NOTICE
Wrong sequence of connections
Valve mechanism may get damaged when electrical power is being
connected before compressed air is connected.
Always connect compressed air before connecting electrical power.
NOTICE
Wrong voltage
Electrical components may get damaged.
Supply electrical components with the correct voltage.
1. Connect position indicator according to product data sheet.

Series 48 OPERATION
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5 Operation
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
WARNING
Movable parts
Human body parts may get jammed and severely injured.
Do not operate before product is installed completely into the vacuum system.
5.1 Normal operation
Valve is closed and opened pneumatically.
For technical details, see product data sheet.
Make sure that compressed air is supplied at the specified pressure;
see also chapter «4.3 Compressed air connection».
Make sure that the connect voltage is supplied.
See also chapter «4.4 Electrical connection».
Action Execution Procedure
To open
the valve Without solenoid
valve
48 ... - . E24- ....
Supply compressed air to connection “open”.
Release air through connection “closed”.
Table 5-1

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Action Execution Procedure
To close
the valve Without solenoid
valve
48 ... - . E24- ....
Supply compressed air to connection “close”.
Release air through connection “open”.
Table 5-2
5.2 Operation under increased temperature
Maximum allowed temperature, see product data sheet.
NOTICE
Inconstant temperatures
Performance of the valve may deteriorate.
– Actuate valve only after the bake-out temperature has been stable for two
hours.
– If valve must be actuated during bake-out, make sure that the heating or
cooling rate does not exceed 10 °C per hour in the temperature range
– Make sure that the temperature differences over the whole body do not
exceed 30 °C.

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5.3 Bake-out
Valve inside under vacuum pressure
≤
10
-
5
mbar to prevent oxidation.
Valve should be evacuated to vacuum pressure ≤10
-
5
mbar in intermediate
position to reduce pump time. Easiest way to reach the position is to unlock
the valve mechanism and disconnect the CDA supply.
Bellows interspace either under vacuum pressure ≤10
-
5
mbar or filled with an
inert gas to prevent oxidation.
Maximum temperature difference among all baked valve components shall
not exceed 30 °C.
Specification
Valve body: ≤240 °C in open and closed position
Actuator: ≤140 °C for max.100 h *
Position indicator: ≤200 °C
Heating and cooling rate: ≤10 °C / h
Table 5-3
*Applied high temperatures and radiation exposure are weakening the sealing materials of
the actuator. A combination of both will shorten the lifetime.
5.4 Behavior in case of air pressure drop
Valve closed: Valve remains closed and leak tight.
Valve open: Valve remains in open position with protection ring in place.
5.5 Behavior in case of power failure
Valve closed or open: Depending on customer control.

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5.6 Trouble shooting
Failure Check Action See
Valve
mechanism does
not move
Air pressure Connect
compressed air «4.3 Compressed air connection»
Operating
pressure Adjust operating pressure «4.3 Compressed air connection»
Leak at gate Condition of gate
seal Please contact VAT www.vatvalve.com
Condition of
valve gate Please contact VAT www.vatvalve.com
Operating
pressure Adjust operating pressure «4.3 Compressed air connection»
Leak at body Condition of
bonnet seal and
sealing surface Please contact VAT www.vatvalve.com
Condition of
bellows Please contact VAT www.vatvalve.com
Whistling sound
during opening
or closing – No action required
when valve is actu-
ated at atmosphere –
–
No action required
when valve is actu-
ated in vacuum as
long as the sound is
not excessive
–
Table 5-4
If you need any further information, please contact one of our service centers. You will find
the addresses on our website www.vatvalve.com.

Series 48 MAINTENANCE
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6 Maintenance
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
6.1 Maintenance intervals
Under clean operating conditions the valve does not require any maintenance during the
specified life cycle.
•Unexpected impacts from the process may result in more frequent
maintenance.
•When the valve has reached the specified life cycle; see product data
sheet, we recommend to have it serviced by VAT or specially trained
service staff of the customer. Please contact your nearest VAT service
center to get recommendations and an offer. You will find the addresses
on our website www.vatvalve.com.

REPAIRS Series
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7 Repairs
Repairs may only be carried out by the VAT service staff or specially trained service staff of
the customer.
Please contact one of our service centers. You will find the addresses on our website
www.vatvalve.com.