Edwards VS16K Instruction Manual
D059-15-880
Issue D Original
Instruction Manual
Adjustable Vacuum Interlock Switch VS16K
Description Item Number
Adjustable Vacuum Interlock Switch VS16K D059-15-000
© Edwards Limited 2009. All rights reserved. Page i
Edwards and the Edwards logo are trademarks of Edwards Limited.
D059-15-880 Issue D
Contents
Section Page
1 INTRODUCTION .................................................... ................................ 1
1.1 Scope and definitions ................................................................................................... 1
1.2 Description ................................................................................................................ 1
2 TECHNICAL DATA .................................................................................2
2.1 Operating conditions .................................................................................................... 2
2.2 Performance .............................................................................................................. 2
2.3 Mechanical data .......................................................................................................... 2
2.4 Electrical data ............................................................................................................ 2
2.5 Product item number ................................................................................................... 3
3 INSTALLATION ..................................................................................... 4
3.1 Unpacking and inspection .............................................................................................. 4
3.2 General .................................................................................................................... 4
3.3 Connection to the Vacuum System .................................................................................... 4
3.4 Connection to the Electrical Circuit .................................................................................. 4
4 OPERATION ........................................................................................6
4.1 Adjustment ............................................................................................................... 6
5 MAINTENANCE ..................................................................................... 7
6 STORAGE AND DISPOSAL .........................................................................8
6.1 Storage .................................................................................................................... 8
6.2 Disposal ....................................................................................................................8
Index ........................................................... .....................................9
For return of equipment, complete the HS Forms at the end of this manual.
gea/0035/02/09
D059-15-880 Issue D
Page ii © Edwards Limited 2009. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Contents
Illustrations
Figure Page
1 Vacuum switch plug connections ...................................................................................... 5
2 Dimensions of VS16K vacuum switch .................................................................................. 7
Tables
Table Page
1 Maximum switch ratings ................................................................................................ 2
© Edwards Limited 2009. All rights reserved. Page 1
Edwards and the Edwards logo are trademarks of Edwards Limited.
INTRODUCTION
D059-15-880 Issue D
1 INTRODUCTION
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the Edwards VS16K Adjustable Vacuum
Switch. Read this manual before attempting to install and operate the VS16K.
This manual contains essential safety information which supplements the safety features of the VS16K. Safety
procedures are highlighted as WARNING and CAUTION instructions. You must obey these instructions. The use of
WARNINGS and CAUTIONS is defined below.
CAUTION
Cautions are given where failure to observe the instruction could result in damage to the equipment, associated
equipment and process.
1.2 Description
The Edwards VS16K adjustable vacuum switch contains a pressure sensitive diaphragm which operates a non latching
snap action microswitch. The switch can be used to operate an electrical circuit when the system pressure rises or
falls through an operator-determined pressure set point between 30 and 1000 mbar.
The diaphragm is enclosed within the vacuum switch housing which is surrounded by atmospheric pressure and is
coupled to the vacuum system by a NW16 Flange. The absolute switch point pressure will therefore vary by the same
amount as the atmospheric pressure. This must be allowed for when setting the switch point close to the low pressure
end of the range.
The vacuum switch is factory set to operate at about 30 mbar on falling pressure.
WARNING
Warnings are given where failure to observe the instruction could result in injury or death to
people.
WARNING
This switch should not be used for safety critical applications. For many interlock applications the
Edwards IS16K may be more suitable.
D059-15-880 Issue D
Page 2 © Edwards Limited 2 0 09. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
TECHNICAL DATA
2 TECHNICAL DATA
2.1 Operating conditions
2.2 Performance
2.3 Mechanical data
2.4 Electrical data
Maximum switch ratings for different loads and voltages:
Temperature range - operating -5°C to 40°C
Temperature range - storage -20°C to 70°C
Relative humidity (non condensing) 10 to 90%
Maximum operating altitude 3000 m
Installation category (IEC1010) 2 (IEC664/664A)
Pollution category (IEC1010) 2
Enclosure rating IP40
Leak rate <1 x 10
-9
mbar litre/sec
-1
Maximum overpressure 1 bar gauge (2 bar absolute)
Switch point range 30 to 1000 mbar
Switch point differential less than 30 mbar
Weight (unpacked) 0.5 kg
Weight (packed) 0.6 kg
Vacuum connection NW16 Flange
Volume added to vacuum system 7 cm
3
Materials exposed to vacuum system Stainless steel and Armco 17/7PH
Electrical connection mPm 283 plug
Accessory supplied mPm 183 mating electrical socket
Table 1 - Maximum switch ratings
Volts
a.c. 50/60Hz
Resistive Load
Amps
Motor Load
(HP)
125 10 0.125
250 10 0.25
d.c. volts
125 0.5 250 0.25 -
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