Installation, Operating & Maintenance Instructions
Series 650, DN 100 – 250 (I.D. 4" - 10")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel ++41 81 771 61 61 Fax ++41 81 771 48 30 Email reception@vat.ch www.vatvalve.com
258550EE
2007-05-11
7/51
1. Install valve [1] into the vacuum system. Valve seat side should face process chamber. The valve seat side is
indicated by the symbol "∇" on the valve flange.
Caution: Do not tighten the flange screws stronger than indicated under «2.3 Tightening torque».
Caution: Do not admit higher forces to the valve than indicated under «2.4 Admissible forces».
Note: Make sure that enough space is kept free to do preventive maintenance work. The required space is indicated
on the dimensional drawing.
2. Connect compressed air supply
to connection labeled ‘IN’ located at actuator.
Connect compressed air return line
connection labeled ‘OUT’ located at actuator.
Compressed air pressure (above ATM) must be in the range of: 4 - 7 bar / 55 - 100 psi. Use only clean, dry or slightly
oiled air. IN / OUT connections are 1/8“ ISO/NPT internal threads.
3. Install sensor(s) [2] according to the recommendations of the sensor manufacturer and directives given under
«2.5 Requirements to sensor connection».
4. Connect sensor cable [3] to sensor(s) and then to valve (connector: SENSOR). Refer to chapter «2.6 Electrical
connection» for correct wiring.
Note: Input for second sensor is available on 650 . . - . . . E - . . . . version only.
5. Connect valve to remote control unit [4] (connector: INTERFACE). Refer to «3.11.1 Schematics» for correct wiring.
6. Connect power supply [5] to valve (connector: POWER). Refer to chapter «2.6 Electrical connection» for correct
wiring.
Note: To provide power to the valve motor pins 4 and 8 must be bridged
, otherwise motor interlock is active and the
valve enters the safety mode and is not operative. Refer also to «3.1.3 Safety mode».
7. This valve has a double sealed rotary feedthrough with intermediate pumping port for the actuator shaft. This port
(1/8“ ISO/NPT) may optionally be connected to the vacuum line.
8. This valve may optionally be equipped with a heating device. Connect VAT heating device according to manual of
respective heating device.
9. Perform «3.6 Setup procedure» to prepare valve for operation.
Note: Without
performing the setup procedure the valve will not be able to do pressure control.
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