Edwards EXTPX Series, EXT400/200PX, EXT400/200/30iPX Instruction Manual

Instruction Manual
EXTPX Split Flow
B760-60-880
Issue A Original
Description Item Number
24 Volt EXT400/200PX Split flow compound Turbomolecular Vacuum Pump B760-61-991 24 Volt EXT400/200PX Split flow compound Turbomolecular Vacuum Pump B760-62-991 24 Volt EXT400/200/30iPX Split flow compound Interstage Turbomolecular Vacuum Pump B760-67-991 24 Volt EXT400/200/30iPX Split flow compound Cartridge Interstage Turbomolecular Vacuum Pump B760-53-991
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B760-60-880 Issue A

Contents

Section Page
1 Introduction .......................................................................................1
1.1 Scope and definitions ................................................................................................... 1
2 Technical data ....................................................................................3
2.1 General .................................................................................................................... 3
2.2 Pumping media ........................................................................................................... 5
2.3 Vent gas specification and vent control data ....................................................................... 7
2.4 Purge gas specification and data ...................................................................................... 7
2.5 Materials exposed to gases pumped .................................................................................. 7
3 Installation .................................................... ................................... 13
3.1 Unpack and inspect .....................................................................................................13
3.2 Typical installation .....................................................................................................14
3.3 Connection to the vacuum system ...................................................................................16
3.3.1 Mechanical fixing .......................................................................................................16
3.3.2 Inlet screens .............................................................................................................16
3.3.3 Inlet connection and pump orientation .............................................................................17
3.3.4 Backing-port connection ...............................................................................................20
3.3.5 Booster port connection ...............................................................................................20
3.4 Vent options, vent-valve connection and control .................................................................20
3.5 Purge gas connection ...................................................................................................21
3.6 Electrical installation ..................................................................................................21
3.6.1 EXDC drive module .....................................................................................................22
3.6.2 TIC controller ............................................................................................................22
3.7 Cooling ...................................................................................................................22
3.7.1 Introduction .............................................................................................................22
3.7.2 Forced-air cooling ......................................................................................................22
3.7.3 Water-cooling ...........................................................................................................22
3.8 Magnetic fields ..........................................................................................................23
Contents
4 Operation ........................................................................................ 25
4.1 Start-up ..................................................................................................................25
4.2 Shut-down ................................................................................................................26
4.3 Safety interlocks and control system ................................................................................26
4.3.1 EXDC drive module .....................................................................................................26
4.3.2 TIC controller ............................................................................................................26
4.4 Bakeout ...................................................................................................................26
5 Maintenance ..................................................................................... 27
5.1 Introduction .............................................................................................................27
5.2 Bearing maintenance ...................................................................................................27
5.3 Rotor life .................................................................................................................27
5.4 Cleaning the pump ......................................................................................................27
5.5 Fault finding .............................................................................................................28
6 Storage and disposal ...... .... ..... ..... ..... ..... ..... ..... ................................... 31
6.1 Storage ...................................................................................................................31
6.2 Disposal ...................................................................................................................31
7 Service, spares and accessories .............................................................. 33
dcs/7784/01/08
© Edwards Limited 2007. All rights reserved. Page i Edwards and the Edwards logo are trademarks of Edwards Limited.
B760-60-880 Issue A
Contents
7.1 Introduction .............................................................................................................33
7.2 Service ....................................................................................................................33
7.3 Spares kits ...............................................................................................................33
7.3.1 Inlet screens .............................................................................................................33
7.3.2 Inlet strainer .............................................................................................................33
7.3.3 Inlet-flange seal .........................................................................................................33
7.4 Accessories ...............................................................................................................34
7.4.1 Installation ...............................................................................................................34
7.4.2 EXDC drive module .....................................................................................................34
7.4.3 TIC controller ............................................................................................................34
7.4.4 TAV vent-valve and vent port adaptor ..............................................................................34
7.4.5 VRX vent-restrictor .....................................................................................................35
7.4.6 PRX purge-restrictor ....................................................................................................35
7.4.7 ACX air-cooler ...........................................................................................................35
7.4.8 WCX water-cooler ......................................................................................................35
Index ................................................................ .............................. 37
For return of equipment, complete the HS Forms at the end of this manual.

Illustrations

Figure Page
1 Booster port performance with lines of constant backing pressure ............................................. 5
2 Dimensions of B76061991 EXT400/200PX split flow pump - large main and side ports (units in mm) ...... 8
3 Dimensions of B76062991 EXT400/200PX split flow pump -
large main and side ports plus end port (units in mm) ............................................................ 9
4 Dimensions of B76067991 EXT400/200/30iPX -
large side port and end port plus interstage port (units in mm) ................................................10
5 Dimensions of B76053991 EXT400/200/30iPX -
interstage cartridge pump with main, side ports plus interstage port (units in mm) ........................11
6 Schematic of a typical EXTPX split flow system ...................................................................15
7 Correct installation of inlet screen ..................................................................................17
8 Correct mounting attitude of the EXTPX split flow pump ........................................................19
9 Installation of optional accessories ..................................................................................36
Page ii © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
B760-60-880 Issue A

Tables

Table Page
1 General data .............................................................................................................. 3
2 Technical data ........................................................................................................... 3
3 Vent gas and vent control data ........................................................................................ 7
4 Purge gas specification ................................................................................................. 7
5 List of items supplied ..................................................................................................13
6 Vent-restrictor orifice diameter (with atmospheric pressure at the inlet of the vent-valve) ..............21
7 Water-cooling block supply requirements ..........................................................................23
8 Fault finding .............................................................................................................28
9 Spares kits ...............................................................................................................33
10 EXDC drive module .....................................................................................................34
11 TIC controller ............................................................................................................34
12 TAV vent-valve and vent port adaptor ..............................................................................34
13 VRX vent restrictor .....................................................................................................35
14 PRX purge restrictor ....................................................................................................35
15 ACX air-cooler ...........................................................................................................35
16 WCX water-cooler ......................................................................................................35
Contents

Associated publications

Publication title Publication number
EXDC Turbomolecular pump drive module D396-45-880 TIC (100 W and 200 W) manual D397-22-880 TIC range CD D397-00-879 EXT pump accessories manual B580-65-880
© Edwards Limited 2007. All rights reserved. Page iii Edwards and the Edwards logo are trademarks of Edwards Limited.
B760-60-880 Issue A
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Page iv © Edwards Limited 2007 . All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
B760-60-880 Issue A
CAUTION
WARNING

1Introduction

1.1 Scope and definitions

This manual provides installation, operation, maintenance and storage instructions for the range of Edwards EXT400/200PX and EXT400/200/30iPX split f low com pound t urbomo lecular vacuum pu mps, he reaf ter re ferred to as EXTPX split flow pumps. Please read and follow all instructions in this manual.
The EXTPX split flow pump is designed for use with an Edwards 24 V EXDC160 drive module unless using Argon (please refer to Section 2.2) when an EXDC80 drive module may be recommended. Read this manual and the instruction manual supplied with your EXDC before you attempt to install or operate the equipment. The EXDC drive module manual contains details of electrical installation.
Important safety information in this manual is highlighted as WARNING and CAUTION instructions; please obey these instructions. The use of WARNINGS and CAUTIONS is defined below.
Warnings are given where failure to observe the instruction could result in injury to or death of people.
Introduction
Cautions are given where failure to observe the instruction could result in damage to the equipment, associated equipment and process.
In accordance with the recommendations of EN61010, the following warning symbols may appear on the p ump or its accessories:
Warning - refer to accompanying documentation.
Warning - risk of electric shock.
Warning - hot surfaces.
The units used throughout this manual conform to the SI international system of units of measurement. Also throughout this manual, wherever flow rates are specified, the abbreviation 'sccm' is used to mean standard
3
cm
min-1: this is a flow of 1 cm3 min-1 at an ambient temperature of 0 °C and a pressure of 1013 mbar
5
(1.013 x 10
Pa).
© Edwards Limited 2007. All rights reserved. Page 1 Edwards and the Edwards logo are trademarks of Edwards Limited.
B760-60-880 Issue A
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B760-60-880 Issue A

2Technical data

2.1 General

Table 1 - General data
General items Reference data
Performance Refer to Table 2 Dimensions Refer to Table 2 and Figure 2 to 5 Maximum inlet-flange temperature 70 °C Maximum radial and axial magnetic field 3.5 mT Installation category EN61010 part 1, Category 1 Pollution degree EN61010 part 1, Category 2
Table 2 - Technical data
Parameter EXTPX split flow pump Notes
Mass 12 kg or less Weight dependent on specific
variant. Main inlet port Refer to Figure 2 to 5 Side inlet port Refer to Figure 2 to 5 Interstage port Refer to Figure 2 to 5 Booster port DN 25NW Exhaust port DN 25NW Vent port 1/8 inch BSPP Purge port 1/8 inch BSPP Peak end inlet pumping speed
-1 *
N
2
He 320 l s H
2
Peak main inlet pumping sp eed N
2
He 310 l s H
2
Peak side inlet pumping speed N
2
He 200 l s H
2
Peak interstage inlet pumping speed N
2
He 27 l s H
2
320 l s
-1
-1
280 l s
-1 *
310 l s
-1
-1
270 l s
-1 *
200 l s
-1
-1
150 l s
-1 *
27 l s
-1
-1
27 l s
Technical data
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B760-60-880 Issue A
Technical data
Table 2 - Technical data (continued)
Parameter EXTPX split flow pump Notes
Peak booster port pumping speed N using XDS10 24 m3 h-1 (6.7 l s-1) using RV12 26 m3 h-1 (7.2 l s-1) Peak compression ratio from the
backing-port to the main inlet
, He and H
N
2
2
Peak compression ratio from the side inlet to the main inlet
, He and H
N
2
2
Maximum booster port pressure- N
Maximum backing pressure- N
Recommended backing-pump Application dependent Please consult Edwards. Maximum single continuous
inlet pressure Main inlet 1.2 x 10 Side inlet 4.1 x 10 Interstage inlet (where fitted) 2.2 x 10 -1 mbar Operating attitude Refer to Figure 8 Nominal rotational speed 60,000 rpm Starting time to 90% speed
Using an EXDC 160 Cooling method Forced air/ water-cooling Refer to Section 3.7. Ambient air temperature
(forced air-cooling) Water-cooling supply temperature 10- 20°C Noise level at 1 metre < 45 dBA Recommended controller EXDC 160 W 24 V D396-46-000 Recommended controller (Argon) EXDC 80 24 V D396-45-000 also refer to
EXDC160 maximum VA output 250 VA Quiescent power 25-40 W P ower at ultimate pressure with
*
All pumping speeds are peak valu es for a horizontal envelope pump without inlet screen. Inlet screens may reduce performance by up to 15%. Actual pumpin g speed for different envelope variants will be dependent on inlet geometry and flow distribution between ports.
2
N2 > 1 x 10 He 1 x 10 H2 2 x 10
N2 1 x 10
8 6
5 4
*
He 100
H2 35
2
4.5 mbar Air cooled at 25 °C ambient with RV12 backing-pump (1400 sccm flow) and with no flow through other inlet ports, and no strainer fitted.
2
17 mbar Air cooled at 25 °C ambient, with no
flow through other inlet ports.
-2
mbar Air at 35 °C ambient- with RV12
-2
mbar
backing-pump.
285 seconds With zero gas load, and XDS10
backing-pump.
0- 35°C
Section 2.2.
-2
mbar backing pressure.
10
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Edwards and the Edwards logo are trademarks of Edwards Limited.
B760-60-880 Issue A
WARNING
WARNING
WARNING
WARNING
Figure 1 - Booster port performance with lines of constant backing pressure
Technical data
*
Power Limit Zone: The temperatures shown are pump local ambients. The tests were performed with a single
radial fan cooling the pump. If extra cooling is added, extra performance can be obtained. Exact limits will be based on application requirements, cooling metho d and pump configuration; please consult Edwards to ensure suitability. Also refer to Section 3.7 and 7.4 for cooling requirements and accessories.

2.2 Pumping med ia

If pumping hazardous gases or vapours, the customer must observe the safety recommendations of the supplier of the gas or vapour. Vent hazardous gases and gas mixtures safely. Do not expose people to these gases.
Do not pump explosive gas mixtures through the EXTPX split flow pump as the pump is not suitable for this purpose.
If pyrophoric gases are pumped then the customer must supply adequate dilution with an inert gas.
It is the customers' responsibility to leak check their system to ensure that the process gases will not escape to the atmosphere where this would cause a hazard.
© Edwards Limited 2007. All rights reserved. Page 5 Edwards and the Edwards logo are trademarks of Edwards Limited.
B760-60-880 Issue A
CAUTION
CAUTION
CAUTION
WARNING
Technical data
Gases entering from different pump inlets may combine to cause dangerous mixtures.
An EXDC160 drive module is recommended for most applications. However, when pumpi ng high concentrations of Argon (over 50% of gas mixture) an EXDC80 drive module is recommended to protect the pump against overheating. If in any doubt, please contact your local Edwards Vacuum Representative.
Do not use the EXTPX split flow pump to pump particulates or condensable media. Deposition may occur within the pump which will degrade pump performance and reduce the pump life.
Do not use the EXTPX split flow pump to pump gases containing more than 20% oxygen. If you do, the lubricant will polymerise and the pump will fail prematurely.
Note: Concentrations of gases may be modified by the compression of the pump.
The pump is designed to pump the following residual gases normally used in high-vacuum systems:
z Air z Nitrogen z Carbon Dioxide z Carbon Monoxide z Krypton z Helium z Neon z Argon z Hydrogen z Ethane z Propane z Butane z Methane
You can use the pump to pump oxygen and water vapour, subject to the following conditions:
z Oxygen - The oxygen concentration must be less than 20% by volume; also refer to Section 2.4. z Water vapour - You must ensure that vapour does not condense inside the pump.
If you wish to pump a gas not in the list above, co ntact your supplier for advice. If you do not contact your supplier, you may invalidate the warranty on the pump. The pump is not suitable for pumping aggressive or corrosive gases.
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