VAT 670 Series Assembly instructions

Installation, Operating &
Maintenance Instructions
1082422EA.DOCX Edition 2021-05-10
Symmetrical flow control & isolation valve
Series 670
DN 350 mm (I. D. 14" )
This manual is valid for the following product ordering number
67051-JH52-ADF1

Series
670
2/39 Edition 2021-05-10 1082422EA.DOCX
Imprint
Manufacturer VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Website:
Phone:
Fax:
Email:
www.vatvalve.com
[phone]
[phone]
[email protected]
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
2021
No part of these Instructions may be reproduced in any way (photocopies,
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 670
1082422EA.DOCX Edition 2021-05-10 3/
39
Contents
1 Description of product........................................................................5
1.1 Identification of product ...................................................................................................5
1.2 Use of product.................................................................................................................5
1.3 Firmware .........................................................................................................................5
1.4 Used abbreviations..........................................................................................................5
1.5 Related documents..........................................................................................................5
1.6 Important information.......................................................................................................5
1.7 Technical data.................................................................................................................6
1.7.1 Valve unit..........................................................................................................6
2 Safety ...................................................................................................7
2.1 Compulsory reading material...........................................................................................7
2.2 Danger levels ..................................................................................................................7
2.3 Personnel qualifications...................................................................................................8
2.4 Safety labels....................................................................................................................8
3 Design and Function...........................................................................9
3.1 Design.............................................................................................................................9
3.2 Function...........................................................................................................................9
4 Installation.........................................................................................10
4.1 Unpacking .....................................................................................................................10
4.2 Installation into the system............................................................................................12
4.2.1 Installation space condition.............................................................................13
4.2.2 Installation overview........................................................................................14
4.2.3 Installation procedure......................................................................................15
4.3 Tightening torque ..........................................................................................................16
4.4 Admissible forces..........................................................................................................16
5 Operation...........................................................................................17
6 Trouble shooting...............................................................................18
7 Maintenance ......................................................................................19
7.1 Maintenance intervals....................................................................................................20
7.2 Maintenance procedures...............................................................................................20
7.2.1 Removing the plate and plate seal replacement.............................................21
7.2.2 Replace the actuator.......................................................................................25
8 Repairs...............................................................................................30
9 Dismounting and Storage.................................................................31
9.1 Dismounting ..................................................................................................................31
9.2 Storage..........................................................................................................................32
10 Packaging and Transport.................................................................33
10.1 Packaging......................................................................................................................33
10.2 Transport.......................................................................................................................34
11 Disposal.............................................................................................35
12 Spare parts ........................................................................................36

Series
670
4/39 Edition 2021-05-10 1082422EA.DOCX
13 Appendix ........................................................................................... 38

Series 670 DESCRIPTION OF PRODUCT
1082422EA.DOCX Edition 2021-05-10 5/
39
1 Description of product
1.1 Identification of product
The fabrication number and order fabrication are fixed on the product directly or by means of an
identification plate.
Fabrication No.:
000 . .- . . . .- . . . ./ . . . .
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 Firmware
Generate a diagnostic file to recieve the current firmware.
1.4 Used abbreviations
Abbreviation Description
SFV Symmetrical flow valve
CPA Control performance analyser
1.5 Related documents
• Product data sheet
• Dimensional drawing
• External controller manual (IC2)
1.6 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.

DESCRIPTION OF PRODUCT Series
670
6/39 Edition 2021-05-10 1082422EA.DOCX
1.7 Technical data
1.7.1 Valve unit
Describtion
Functional principle symmetrical flow
Pressure range at 20 °C 1 × 10-6 mbar to 1.2 bar (abs)
Leak rate to outside at 20 °C 1 × 10-5 mbar l/s
Leak rate valve seat at 20 °C 1 × 10-4 mbar l/s
Max. differential pressure on plate at isolation 1200 mbar (from chamber side)
10 mbar (from pump side)
Max. differential pressure on plate during operation 30 mbar
Cycles (under vacuum) until first service
- Isolation cycles (open - closed - open)
- Throttling cycles (open - max. throttle - open)
200’000 (unheated and under clean conditions)
2’000’000 (unheated and under clean conditions)
Admissible operating
temperature valve body, plate 10°C to +120°C
(ΔT between body and plate max. 40K)
actuator ambient ≤35 °C (recommended)
50 °C (max.)
Mounting position Horizontal (actuators downwards)
Process side
materials flange Aluminum EN AW-6061 T6/T651 hard anodized
plate Aluminum EN AW-6061 T6/T651 hard anodized
actuator shafts Stainless steel 316L (1.4435 or 1.4404)
bellows Stainless steel 633 (AM350)
bolts Stainless steel A4
wiper ring not present
Seals plate Chemraz
®
XCD
arm (plate) Chemraz
®
657
shaft Chemraz
®
657
actuator shaft seals Chemraz
®
657
Min. controllable conductance (N
2
molecular flow) 0.35 l/s
Actuating time full open to min. conductance
min. conductance to full open
(throttling)
typ. 1.2 s per 100 mm
min. conductance to closed
(isolation) typ. 1.5 s
closed to min. conductance
(de-isolation) typ. 1.2 s
Stroke mechanical maximum 100 mm
Weight approx. 35 kg
Dimensions Refer to dimensional drawing (1083135)

Series 670 SAFETY
1082422EA.DOCX Edition 2021-05-10 7/
39
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.

SAFETY Series
670
8/39 Edition 2021-05-10 1082422EA.DOCX
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. Location on valve
T-9001-156 On protective foil covering the
valve opening

Series 670 DESIGN AND FUNCTION
1082422EA.DOCX Edition 2021-05-10 9/
39
3 Design and Function
3.1 Design
0
Sample picture
1 Flange 5 Shaft with bellows (actuator)
2 Plate 6 Actuator
3 Plate seal Valve seat side
4 Plate screw -
3.2 Function
The valve plate (2) acts as a throttling element and varies the conductance of the valve opening. The
controller calculates the required plate position to achieve the set point pressure. Actuation is
performed by two synchronous stepper motors (7). Encoders monitor the position. This principle
ensures fast and accurate process pressure control.
2
3
4
1
6
5

INSTALLATION Series
670
10/39 Edition 2021-05-10 1082422EA.DOCX
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.
4.1 Unpacking
WARNING
Heavy weight
Physical overstraining.
Use a crane to lift valves DN 200 (8”) and larger.
NOTICE
Physical overstraining at actuators
Inappropriate handling with the valve may cause in damage of actuator.
Do not place the valve on the actuators.
• 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.

Series 670 INSTALLATION
1082422EA.DOCX Edition 2021-05-10 11/
39
1. Open the transport case and remove inside packing material as far as necessary.
2. Use a crane and lifting attachments (4 × M10 thru) to lift the valve. See example figure below.
3. Lift the valve carefully and place it on a clean place.
Do not remove protective foils from valve opening

INSTALLATION Series
670
12/39 Edition 2021-05-10 1082422EA.DOCX
4.2 Installation into the system
CAUTION
Valve opening
Risk of injury.
Do not connect the controller to power before the valve is installed complete into the
system.
NOTICE
Wrong connection
Wrong connection may result in damage of controller or power supply.
Connect all cables exactly as shown in the following schematic.
NOTICE
Burned connector pins (spark)
Connector pins or electronic parts could damage, if plugged and unplugged under
power.
Do not plug or unplug connectors under power.
NOTICE
Contamination
Gate and other parts of the valve must be protected against contamination.
Always wear clean room gloves when handling the valve.
• Make sure that the sealing surfaces of the valve and the chamber are undamaged.
• Mount valve to a clean system only.

Series 670 INSTALLATION
1082422EA.DOCX Edition 2021-05-10 13/
39
4.2.1 Installation space condition
Install the valve with actuators with space (a) for dismantling and air circulation as
shown in figure below.

INSTALLATION Series
670
14/39 Edition 2021-05-10 1082422EA.DOCX
4.2.2 Installation overview
Chamber
External Controller IC2 [3]
Pump side
Symmetrical flow valve [1]
Valve cable [2]

Series 670 INSTALLATION
1082422EA.DOCX Edition 2021-05-10 15/
39
4.2.3 Installation procedure
All numbers in brackets refer to chapter «Installation overview».
1. Remove protective covers from body flanges.
2. Install symmetrical flow valve [1] into the vacuum system. Refer to chapter «Installation
overview».
• Do not tighten the flange screws stronger than indicated under «Tightening
torque».
• Do not admit higher forces to the valve than indicated under «Admissible forces».
• Make sure that enough space is kept free to do preventive maintenance work. The
required space is indicated on the dimensional drawing
3. Install valve cable [2] to actuators and then to the External Controller IC2 [3]. Refer to chapter
«Installation overview».
Take care to the connector position at actuators, refer to 3 dots at connector for
correct connection.
4. Install all electrical connections at External Controller. Refer to «External Controller manual (IC2).

INSTALLATION Series
670
16/39 Edition 2021-05-10 1082422EA.DOCX
4.3 Tightening torque
NOTICE
Physical overstraining at valve flange.
Physical overstraining may cause in damage of valve flange.
Do force (fasten) the screws more as specified by the screw manufacturer.
4.4 Admissible forces
Forces from evacuating the system, from the weight of other components, and from
baking can lead to deformation and malfunctioning of the valve. Stress has to be
relieved by suitable means, e.g. bellows sections.
Axial tensile or
compressive force
«F
A
» Bending mo ment «M»
N lb. Nm lbf.
4000 880 160 120
For a combination of both forces (F
A
and M) the values are invalid.
Verify that the depth of the mounting screws is min. 1x thread diameter.
Please contact VAT for more information.
M
FA

Series 670 OPERATION
1082422EA.DOCX Edition 2021-05-10 17/
39
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.
CAUTION
Valve opening
Risk of injury.
Do not operating before the valve is installed complete into system.
For «Operation» refer to «External Controller manual».

OPERATION Series
670
18/39 Edition 2021-05-10 1082422EA.DOCX
6 Trouble shooting
For «Trouble shooting » refer to «External Controller manual».
If you need any further information, please contact one of our service centers. You can find the
addresses on our website: www.vatvalve.com.

Series 670 MAINTENANCE
1082422EA.DOCX Edition 2021-05-10 19/
39
7 Maintenance
WARNING
Unqualified personnel
Inappropriate handling may cause serious injury or property damage.
Only qualified personnel are allowed to carry out the described work.
CAUTION
Hot surfaces
Heated valve may result in minor or moderate injury.
Do not touch valve and heating device during operation. Once heating is switched off
(valve and system) await until the valve is cooled down complete before doing any
work.
CAUTION
Valve opening
Risk of injury.
Human body parts must be kept out of the valve opening and away from moving parts.
NOTICE
Contamination
Gate and other parts of the valve could be contaminated.
Always wear cleanroom gloves when handling the valve.
NOTICE
Scratches on sealing surface
Scratches on sealing surface cause in malfunction (leak) of valve
Only qualified personnel are allowed to carry out the described work.

MAINTENANCE Series
670
20/39 Edition 2021-05-10 1082422EA.DOCX
7.1 Maintenance intervals
Under clean operating conditions, the valve does not require any maintenance during the specified
cycle life. Contamination from the process may influence the function and requires more frequent
maintenance.
Before carrying out any maintenance, please contact VAT. It has to be individually decided whether
the maintenance can be performed by the customer or has to be carried out by VAT
www.vatvalve.com. The fabrication number on the valve has always to be specified. Refer to chapter
«1.1 Identification of product» for fabrication number.
7.2 Maintenance procedures
• Open / close the service cover and valve cleaning. Refer to manual of customized process
chamber.
This task is described on customer side.
• Removing the plate and plate seal replacement. Refer to chapter «7.2.1 Removing the plate and
plate seal replacement».
• Replace the actuator shaft. Refer to chapter «7.2.2 Replace the actuator.
The bellows inside both actuators are designed for the specified cycle life and should
be replaced thereafter.
In addition, the ball screw spindle should be lubricated after the specified cycle life.
Please contact VAT service for this replacement / maintenance task.