Edwards EH500 Instruction Manual page 2

A301-51-880 Issue T
Tables
Table
1 Operating and storage conditions ..................................................................................... 9
2 Temperature classifications ............................................................................................ 9
3 Pressure ratio figures ..................................................................................................10
4 DPS dry pump and EH mechanical booster pump combinations for T3 ......................................... 10
5 DPS dry pump and EH mechanical booster pump combinations for T160 ......................................10
6 CPH dry pump and EH mechanical booster pump combinations for T160 ......................................11
7 CPH dry pump and EH mechanical booster pump combinations for T3 ........................................ 11
8 Performance data ....................................................................................................... 12
9 Mechanical data .........................................................................................................12
10 Electrical data ........................................................................................................... 13
11 Lubrication data ........................................................................................................ 14
12 Hydrokenetic drive/gearbox purge nitrogen supply data ......................................................... 14
13 Cooling water supply data: EH pumps in non-ATEX systems ..................................................... 14
14 Cooling-water supply data: EH pumps in ATEX systems ..........................................................15
15 Noise and vibration data ............................................................................................... 15
16 Connections ..............................................................................................................15
17 Materials of construction ..............................................................................................16
18 Item numbers ............................................................................................................ 16
19 Motor cable-gland hole sizes ..........................................................................................31
20 Electrical supply connection configurations ........................................................................ 33
21 Maintenance plan ....................................................................................................... 45
22 Spare item numbers .................................................................................................... 53
23 EH250 and EH500 spare parts .........................................................................................53
24 EH1200 spare parts .....................................................................................................54
25 EH2600 and EH4200 spare parts ......................................................................................54
Associated publications
Publication title Publication number
Vacuum pump and vacuum system safety - chemical and industrial vacuum systems P400-40-100
ATEX Instruction Manual P600-60-200
© Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
A301-51-880 Issue T
1 Introduction
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the following Edwards EH mechanical
booster pumps:
Safe area EH mechanical booster pumps:
EH250, EH250IND EH500, EH500IND, EH1200, EH1200IND, EH2600, EH2600IND, EH4200 and EH4200IND
Chemical EH mechanical booster pumps:
EH1200C, EH2600C, EH4200C
ATEX compliant EH mechanical booster pumps:
EH1200T3/T160/T4X, EH2600T160/T4X, EH42000T3X, EH4200T160/T4X
Where appropriate, the titles EH mechanical booster pump, safe area EH mechanical booster pump, ATEX compliant
EH mechanical booster pumps and chemical EH mechanical booster pump are abbreviated to EH pump, safe area EH
pump, ATEX compliant EH pump and chemical EH pump respectively in the remainder of this manual.
You must use your EH pump as specified in this manual.
Read this manual before you install and operate your EH pump. Important safety information is highlighted as
WARNING and CAUTION instructions; you must obey these instructions. The use of WARNINGS and CAUTIONS is defined
below.
WARNING
Warnings are given where failure to observe the instruction could result in injury or death to
people.
CAUTION
Cautions are given where failure to observe the instruction could result in damage to the equipment, associated
equipment and process.
The units used throughout this manual conform to the SI international system of units of measurement.
1.2 Description
1.2.1 Overview
The EH pumps are compact and have high pumping speeds. You must use the EH pump with a suitable backing pump.
The EH pumps can operate with a maximum continuous inlet pressure of 1000 mBar. You can achieve lower system
pressures by the use of two or more EH pumps in series.
On all EH pumps, the hydrokinetic drive/gearbox is connected to the pump outlet by a pressure equalisation
passageway, and forms an integral part of the vacuum system. The connecting passageway has a filter which removes
debris and so prevents contamination of the lubricating oil and bearings. For an even cleaner system, you can
evacuate the end-cover/gear cover by connection of the evacuation port (Figure 1, item 5 or Figure 2, item 6) to the
pump-inlet or to an external vacuum pump.
The hydrocarbon safe area, ATEX compliant and chemical EH pumps use hydrocarbon oils, such as Edwards Ultragrade
20. Versions of the safe area EH pumps for use with PFPE (perfluoropolyether) oils are also available for vacuum
systems in which oxygen or other reactive or corrosive gases are pumped. The EH pumps must not be used to pump
peroxides.
© Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
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A301-51-880 Issue T
All of the EH2600 and EH4200 model pumps have an after-cooler in the pump-outlet, to reduce the exhaust gas and
rotor temperature.
The safe area EH pumps are safe to handle non-flammable gases and vapours within the normal operating parameters
of the pumps, as defined in this manual.
The chemical, and ATEX compliant EH pumps, when used with suitable backing pumps, are designed to pump
flammable gases within the T (temperature) classification defined in the pump description (see Section
Note: All 60 Hz booster pumps are given a T3 temperature rating.
In order to comply with temperature classification requirements, a chemical, and ATEX compliant EH pump must be
connected to a backing pump that provides a backing pressure lower than the critical backing pressure and the
pressure ratio of the combination is lower than the maximum stated in Table 3 or be used in a pumping system
recommended by Edwards: refer to Section 1.3.3 and 2.2.
All of the EH pumps have ISO inlet-flange and outlet-flange connections.
Page 2 © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
1.3.3).