Edwards RV3 User manual

A652–01–880
Issue Y
Instruction Manual
RV3, RV5, RV8 and RV12 Rotary Vane Pumps
A 65X-YY-ZZZ
Pump Type Variant Motor Description
X YY ZZZ
2 = RV3 01 to 99 903 = 220-240 V, 50/60 Hz, Single phase
3 = RV5 904 = 100/200 V, 50/60 Hz, Single phase
4 = RV8 905 = 200-230/380-460 V, 50/60 Hz, Three phase
5 = RV12 906 = 110-115/120 V 50/60 Hz, Single phase
925 = 200-230/380-460 V, 50/60 Hz, Three phase
Original Instructions

Declaration of Conformity
This product has been manufactured under a quality management system certified to ISO 9001:2015.
This declaration is based on the requirements of EN ISO 17050-1 and the relevant directives.
P200-00-540 Issue L
Edwards Ltd,
Innovation Drive,
Burgess Hill,
West Sussex,
RH15 9TW, UK
The following product
A65X – YY – ZZZ
Pump type Variant Motor description
X YY ZZZ
2 = RV3 01 to 99 903 = 220-240V, 50/60Hz, Single phase
3 = RV5 904 = 100/200V, 50/60Hz, Single phase
4 = RV8 905 = 200-230/380-460V, 50/60Hz, Three phase
5 = RV12 906 = 110-115/120, 50/60Hz, Single phase
925 = 200-230/380-460V, 50/60Hz, Three phase set to low voltage
Is in conformity with the relevant requirements of European CE legislation:
2006/42/EC
Machinery directive
2014/35/EU
Low voltage directive (LVD) as applicable to electrical sub-assemblies
2011/65/EU
Restriction of certain hazardous substances (RoHS) directive
Based on the relevant requirements of harmonised standards:
EN 1012-2:1996
+A1:2009
Compressors and vacuum pumps. Safety requirements. Vacuum pumps
EN 60034-1:2010
Rotating electrical machines. Rating and performance
EN 61010-1:2010 *
Safety requirements for electrical equipment for measurement, control and laboratory use.
General requirements
*1-phase pumps only The pumps comply with EN 61010-1 when installed in accordance with the instruction manual supplied
with the pumps.
The product also complies with the following:
CSA-C22.2 No.77-2014#
Motors with inherent overheating protection
CSA-C22.2 No.100-2014#
Motors and generators
CSA-C22.2
No.61010-1-12
Safety requirements for electrical equipment for measurement, control and
laboratory use – Part 1: General requirements
UL61010-1
3
rd
Edition
Safety requirements for electrical equipment for measurement, control and
laboratory use – Part 1: General requirements
#1-phase pumps only Canadian Standards Authority and Underwriters Laboratory
This covers all product serial numbers from the date of this declaration onwards.
19.03.2018, Burgess Hill
Mr Ian Keech
Vice President Engineering, High Vacuum Division
Date and Place

P200-10-019
IssueD
Material Declaration
In accordance with the requirements of the Chinese regulatory requirement on the Management Methods for the
Restriction of the Use of Hazardous Substances in Electrical and Electronic Products Order No. 32 (also known as
‘China RoHS2’) and SJ/T 11364 Marking for the Restricted Use of Hazardous Substances in Electronic and Electrical
Products:
Product Labels
Product Product Label Meaning
All pumps in the
list below
2020
This product contains hazardous substances in at least one of the
homogeneous materials used which are above the limit requirement
in GB/T 26572 as detailed in the declaration table below.
These parts can safely be used for the environmental protection use
period as indicated.
Pump Type Pump Size
RV Pumps RV3,5,8,12, E Lab, nRVi
EM Small Pumps E2M0.7, 1.5, E1M18, E2M18, 28, 30, nE2M40i
nEXT Pumps nEXT 85, 240, 300, 400, Splitflow
nXDS pumps nXDS 6, 10, 15, 20
EXT pumps EXT75DX
XDS pumps XDS35, 46, 100
Diaphragm XDD 1, D lab
Turbo Pump Carts T station, nEXPT, nEXT station
材料成分声明
Materials Content Declaration
部件名称
Part name
危险物质
铅
Lead
(Pb)
汞
Mercury
(Hg)
镉
Cadmium
(Cd)
六价铬
Hexavalent
Chromium
(Cr VI)
多溴联苯
Polybrominated
biphenyls (PBB)
多溴二苯醚
Polybrominated
diphenyl ethers
(PBDE)
铸铝
Cast Aluminium X O O OOO
铜管管件
Brass pipe Fittings XOOOOO
铜接头
Brass Connectors XOOOOO
O：表示该有害物质在该部件的所有均质材料中的含量低于 GB/T 26572 标准规定的限量要求。
O: Indicates that the hazardous substance contained in all of the homogeneous materials for this part is below
the limit requirement in GB/T 26572.
X：表示该有害物质在该部件的至少一种均质材料中的含量超出 GB/T26572 标准规定的限量要求。
X: Indicates that the hazardous substance contained in at least one of the homogeneous materials used for
this part is above the limit requirement of GB/T26572.
NOTES: These products are EU RoHS compliant, the following Exemptions apply:
6(b) Lead as an alloying element in aluminium containing up to 0.4% by weight.
6(c) Copper alloy containing up to 4% lead by weight
Packaging Information
Pallet Over-shipper Protection Pieces Support Braces
NWNW
Recyclable Natural Wood Recyclable Cardboard Recyclable Polypropylene Recyclable Mild Steel

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© Edwards Limited 2018. All rights reserved. Page i
Edwards and the Edwards logo are trade marks of Edwards Limited.
Contents
A652–01–880 Issue Y
Contents
Section Page
1 Introduction .......................................................................................1
1.1 Scope and definitions ...................................................................................................1
1.2 ATEX directive implications ............................................................................................2
1.3 Description ................................................................................................................4
1.4 Performance modes and controls .....................................................................................4
1.4.1 Mode selector ............................................................................................................4
1.4.2 Gas-ballast control ......................................................................................................5
1.5 Construction ..............................................................................................................5
2 Technical data ....................................................................................7
2.1 Operating and storage conditions .....................................................................................7
2.2 Performance ..............................................................................................................7
2.2.1 General ....................................................................................................................7
2.2.2 Performance characteristics ..........................................................................................11
2.3 Mechanical data .........................................................................................................12
2.4 Noise and vibration data ...............................................................................................12
2.5 Lubrication data ........................................................................................................12
2.6 Electrical data: single-phase pumps .................................................................................14
2.6.1 Electrical cables ........................................................................................................14
2.7 Electrical data: three-phase pumps .................................................................................15
3 Installation ....................................................................................... 17
3.1 Safety .....................................................................................................................17
3.2 System design considerations .........................................................................................17
3.3 Unpack and inspect .....................................................................................................18
3.4 Locate the pump ........................................................................................................18
3.5 Fill the pump with oil ..................................................................................................18
3.6 Electrical installation: single-phase pumps .........................................................................19
3.6.1 Check and configure the motor .......................................................................................19
3.6.2 Connect the pump to the electrical supply .........................................................................19
3.6.3 Check the direction of rotation .......................................................................................19
3.7 Electrical installation: three-phase pumps .........................................................................21
3.7.1 Check and configure the motor .......................................................................................21
3.7.2 Connect the pump to the local electrical supply ..................................................................21
3.7.3 Check the direction of rotation .......................................................................................23
3.8 Inlet and outlet connections ..........................................................................................23
3.9 Leak-test the system ...................................................................................................24
4 Operation ........................................................................................ 25
4.1 ATEX directive implications ...........................................................................................25
4.1.1 Introduction .............................................................................................................25
4.1.2 Flammable/pyrophoric materials ....................................................................................25
4.1.3 Gas purges ...............................................................................................................26
4.2 How to use the pump controls ........................................................................................26
4.2.1 Introduction .............................................................................................................26
4.2.2 Mode selector ...........................................................................................................27
4.2.3 Gas-ballast control .....................................................................................................27
4.3 Start-up procedure .....................................................................................................28
4.4 To achieve ultimate vacuum ..........................................................................................28
4.5 To pump condensable vapours ........................................................................................29
4.6 To decontaminate the oil ..............................................................................................29
cg/01/18

A652–01–880 Issue Y
Page ii © Edwards Limited 2018. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Contents
4.7 Unattended operation ..................................................................................................29
4.8 Shut-down ................................................................................................................30
5 Maintenance ..................................................................................... 31
5.1 Safety information ......................................................................................................31
5.2 Maintenance plan .......................................................................................................32
5.3 Check the oil-level ......................................................................................................32
5.4 Replace the oil ..........................................................................................................33
5.5 Inspect and clean the inlet-filter .....................................................................................33
5.6 Inspect and clean the gas-ballast control ...........................................................................34
5.7 Clean the oil-level sight-glass .........................................................................................35
5.8 Clean the motor fan-cover and enclosure ..........................................................................36
5.9 Clean and overhaul the pump .........................................................................................36
5.10 Fit new blades ...........................................................................................................36
5.11 Test the motor condition ..............................................................................................36
5.12 Fault-finding .............................................................................................................36
5.12.1 Introduction .............................................................................................................36
5.12.2 The pump has failed to start ..........................................................................................36
5.12.3 The pump has failed to achieve the specified performance (has failed to reach ultimate vacuum) ......37
5.12.4 The pump is noisy .......................................................................................................37
5.12.5 The pump surface temperature is above 100°C ...................................................................37
5.12.6 The vacuum is not fully maintained after the pump is switched off ...........................................37
5.12.7 The pumping speed is poor ............................................................................................38
5.12.8 There is an external oil leak ..........................................................................................38
6 Storage and disposal ........................................................................... 39
6.1 Storage ...................................................................................................................39
6.2 Disposal ...................................................................................................................39
7 Service and spares .............................................................................. 41
7.1 Introduction .............................................................................................................41
7.2 Service ....................................................................................................................41
7.3 Spares .....................................................................................................................41
7.4 Accessories ...............................................................................................................43
7.4.1 Introduction .............................................................................................................43
7.4.2 Inlet catchpot ...........................................................................................................43
7.4.3 Inlet dust filter ..........................................................................................................43
7.4.4 Inlet desiccant trap .....................................................................................................43
7.4.5 Inlet chemical trap .....................................................................................................44
7.4.6 Foreline trap .............................................................................................................44
7.4.7 Outlet mist filter ........................................................................................................44
7.4.8 Gas-ballast adaptor .....................................................................................................44
7.4.9 Gravity oil drain kit .....................................................................................................44
7.4.10 Oil drain-extension .....................................................................................................44
7.4.11 Exhaust nozzle kit ......................................................................................................44
7.4.12 Vibration isolators ......................................................................................................44
7.4.13 Solenoid operated gas-ballast valve .................................................................................44
7.4.14 Solenoid operated pipeline valve ....................................................................................44
8 PFPE-prepared RV pumps ...................................................................... 47
8.1 Summary .................................................................................................................47
8.2 Installation ...............................................................................................................47
8.3 Operation ................................................................................................................47
8.4 Maintenance .............................................................................................................47
For return of equipment, complete the HS Forms at the end of this manual.

© Edwards Limited 2018. All rights reserved. Page iii
Edwards and the Edwards logo are trade marks of Edwards Limited.
Contents
A652–01–880 Issue Y
Illustrations
Figure Page
1 The RV pump .............................................................................................................3
2 Performance characteristics in High Vacuum mode (pumping speed against inlet pressure) ...............11
3 Dimensions (mm) ........................................................................................................13
4 Motor voltage configuration: single-phase pumps .................................................................20
5 Three-phase electrical connections: 200–230 V ....................................................................22
6 Three-phase electrical connections: 380–460 V ....................................................................22
7 Inlet-filter assembly ....................................................................................................33
8 Gas-ballast control assembly ..........................................................................................34
9 Sight-glass assembly ....................................................................................................35
10 Accessories ...............................................................................................................45
Tables
Table Page
1 Operating and storage conditions .....................................................................................7
2 General performance data .............................................................................................7
3 Performance data: High Vacuum mode ..............................................................................8
4 Performance data: High Throughput mode ..........................................................................9
5 Performance characteristics ..........................................................................................10
6 Mechanical data .........................................................................................................12
7 Noise and vibration data ...............................................................................................12
8 Lubrication data ........................................................................................................12
9 Electrical data (single-phase pumps with Part Numbers ending in -903 or -906) .............................14
10 Electrical data (single-phase pumps with Part Numbers ending in -904) ......................................14
11 Recommended regional supply protection ..........................................................................14
12 Recommended cord sets ...............................................................................................15
13 Electrical data (three-phase pumps with Part Numbers ending in -905) .......................................15
14 Maintenance plan .......................................................................................................32
15 Spares and maintenance kits ..........................................................................................42
16 Accessory item numbers ...............................................................................................43
Associated publications
Publication title Publication number
Vacuum pump and vacuum system safety P400–40–100
Trademark credits
Fomblin®is a registered trademark of Ausimont SpA.

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A652–01–880 Issue Y
Page iv © Edwards Limited 2018. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.

© Edwards Limited 2018. All rights reserved. Page 1
Edwards and the Edwards logo are trade marks of Edwards Limited.
Introduction
A652–01–880 Issue Y
1 Introduction
1.1 Scope and definitions
This manual provides installation, operation and maintenance instructions for the Edwards RV3, RV5, RV8 and RV12
Rotary Vane Pumps. The pump must be used as specified in this manual.
Read this manual before installing and operating the pump. Important safety information is highlighted as WARNING
and CAUTION instructions; these instructions must be obeyed. 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/or process.
The units used throughout this manual conform to the SI international system of units of measurement.
The following warning labels may be present on the pump and used throughout the product documentation:
WARNING
Warnings are given where failure to observe the instruction could result in injury or death to
people. The actual symbol shown varies according to the hazard.
Warning – an appropriate safety instruction should be followed or a caution to a potential hazard exists.
Warning – dangerous voltage. Indicates hazards arising from dangerous voltages.
Warning – hot surfaces. To indicate that the marked item can be hot and should not be touched without
taking precautions.
Warning – heavy object. Indicates the potential risk of physical injury and requires suitable lifting
equipment to move.
Warning – use protective equipment. Indicates that protective equipment must be used.

A652–01–880 Issue Y
Page 2 © Edwards Limited 2018. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Introduction
1.2 ATEX directive implications
This equipment is designed to meet the requirements of Group II Category 3 equipment in accordance with
Directive 94/9/EC of the European Parliament and the Council of 23rd March 1994 on the approximation of
the laws of the Member States concerning equipment and protective systems intended for use in potentially
explosive atmospheres. (The ATEX Directive).
TheATEX Category 3 applies in respect of potential ignition sources internal to the equipment. AnATEX Category
has not been assigned in respect of potential ignition sources on the outside of the equipment as the equipment
has not been designed for use where there is an external potentially explosive atmosphere.
There is no potential source of ignition within the pump during normal operation but there may be potential
sources of ignition under conditions of predicted and rare malfunction as defined in the Directive. Accordingly,
although the pump is designed to pump flammable materials and mixtures, operating procedures should ensure
that under all normal and reasonably predicted conditions, these materials and mixtures are not within
explosive limits. Category 3 is considered appropriate for the avoidance of ignition in the case of a rare
malfunction which allows flammable materials or mixtures to pass through the pump while within their explosive
limits.
When flammable or pyrophoric materials are present within the equipment:
Do not allow air to enter the equipment.
Ensure that the system is leak tight.
For further information, please contact Edwards: refer to the Addresses page at the end of this manual for
details.

© Edwards Limited 2018. All rights reserved. Page 3
Edwards and the Edwards logo are trade marks of Edwards Limited.
Introduction
A652–01–880 Issue Y
Figure 1 - The RV pump
1. Electrical inlet-connector
2. Voltage indicator
3. Lifting handle*
4. NW25 inlet-port
5. Gas-ballast control
6. Oil filler-plug
7. NW25 outlet-port
*RV3 and RV5 pumps only; a lifting bracket is
fitted to RV8 and RV12 pumps.
8. Oil-level sight-glass
9. Oil drain-plug
10.Rubber feet (4 off)
11.Mode selector
12.On-off switch†
13.Motor fan-cover
14.Correct direction of rotation
†Single-phase pumps only.
Note: Single-phase RV3/RV5 pump shown.

A652–01–880 Issue Y
Page 4 © Edwards Limited 2018. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Introduction
1.3 Description
The Edwards RV rotary vane pump is shown in Figure 1. Refer to Figure 1 for item numbers in brackets in the following
descriptions. The RV pumps are two-stage, oil-sealed, sliding-vane vacuum pumps. The pump has NW25 inlet (4) and
outlet (7) ports, a gas-ballast control (5) and a mode selector (11). When the pump is switched off, an inlet-valve
seals the inlet and prevents the suck-back of air and oil into the vacuum system.
The RV3 and RV5 pumps have a retractable lifting handle (3). The RV8 and the RV12 pumps are fitted with a lifting
bracket for use with suitable lifting equipment.
An oil-pump delivers pressurised oil to the vacuum pumping mechanism in the RV pump. The oil level and condition
can be inspected in the oil-box through a sight-glass (8). Two oil filler-plugs (6) and an oil drain-plug (9) are provided
on the oil-box.
The pump mechanism is driven directly by a single-phase or three-phase electric motor through a flexible
motor-coupling. The motor is totally enclosed and is cooled by the motor cooling-fan which directs air along the
motor fins. The pumps are cooled by an additional fan attached to the motor-coupling.
Single-phase motors are fitted with an on/off switch (12) and a thermal overload device. When the motor is too hot,
the thermal overload device switches off the pump. The thermal overload device has an automatic reset; when the
motor cools down, the device resets and (unless suitable control equipment has been incorporated which must be
manually reset: see Section 3.6.2 and Section 3.7.2), the motor will restart.
As of the end of 2009 improved motors have been fitted to RV pumps. These motors benefit from being fitted with
an aluminium terminal box and externally accessible voltage change-over switches. The introduction of these motors
has resulted in the range of motors covering all voltage and frequency conditions being reduced from four variants
to two. All motors are interchangeable and pump performance is not affected.
The pump is mounted on a base plate on rubber feet (10). Details of suitable vibration isolators and other accessories
are provided in Section 7.
Refer to Section 8 for additional information if the pump is PFPE-prepared.
1.4 Performance modes and controls
The pump has two controls: the mode selector (11) and the gas-ballast control (5). Six possible combinations of these
controls allow for a wide choice of operating characteristics to optimise the performance of the pump for a given
application.
1.4.1 Mode selector
The mode selector has two positions; refer to Section 4.2 to select these positions. Throughout the rest of this
manual, the following convention is used:
The High Vacuum mode is specified by the symbol.
The High Throughput mode is specified by the symbol.
With the mode selector set to High Vacuum mode , pressurised oil is fed to the low vacuum stage only. In this mode
of operation, the pump provides the best possible ultimate vacuum.
With the mode selector set to High Throughput mode , pressurised oil is fed to the high vacuum and low vacuum
stages. In this mode of operation, the pump can sustain long-term high inlet pressures.

© Edwards Limited 2018. All rights reserved. Page 5
Edwards and the Edwards logo are trade marks of Edwards Limited.
Introduction
A652–01–880 Issue Y
1.4.2 Gas-ballast control
To pump high vapour loads, gas-ballast is delivered into the pump to prevent condensation of the vapour carried by
the pumped gases.
Air can be introduced to the low vacuum stage through the gas-ballast valve. Alternatively, an inert gas such as
nitrogen can be supplied through a suitable external valve.
The gas-ballast control has three positions:
Closed (position ‘0’)
Low flow (position ‘I’)
High flow (position ‘II’).
1.5 Construction
The pump-shafts and rotors are made of high-grade cast-iron. The pump-body and oil-box are made from
cast-aluminium. All surfaces of the pump which are exposed to the pumped gases are free from copper, zinc and
cadmium.
Othermaterialsof constructionincludefluorocarbon elastomer,nitrile,silicon, chemically-resistant polymers,nickel
and stainless steel.

A652–01–880 Issue Y
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Edwards and the Edwards logo are trade marks of Edwards Limited.
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© Edwards Limited 2018. All rights reserved. Page 7
Edwards and the Edwards logo are trade marks of Edwards Limited.
Technical data
A652–01–880 Issue Y
2 Technical data
2.1 Operating and storage conditions
2.2 Performance
2.2.1 General
Note: In Table 2 and Table 3, total pressures have been measured by a capacitance diaphragm gauge on a vacuum
chamber without a cold trap, as specified by Pneurop Standard 6602 (1979).
Table 1 - Operating and storage conditions
Parameter Reference data
Ambient temperature range (operation) +12 to +40°C
Ambient temperature range (storage) –30 to +70°C
Normal surface temperature of the pump-body * +50 to +70°C
Maximum humidity (operation) 90% RH
Maximum altitude (operation) 2000 m
Pollution degree 2
Installation category II
Area of use Indoor use
* At ultimate vacuum, with ambient temperature of 20°C.
Table 2 - General performance data
Parameter Reference data
High Vacuum mode performance See Table 3
High Throughput mode performance See Table 4
Suckback protection 1 x 10-5 mbar l s-1, 1 x 10-3 Pa l s-1
Maximum initial pressure rise with no gas-ballast flow 1 x 10-1 mbar, 10 Pa
RV3 RV5 RV8 RV12
Maximum displacement: m3h-1
50 Hz electrical supply
60 Hz electrical supply 3.7 4.5 5.8 5.0 9.7 11.7 14.2 17.0
Maximum pumping speed
(Pneurop 6602, 1979): m3h-1
50 Hz electrical supply
60 Hz electrical supply 3.3 3.9 5.1 6.2 8.5 10.0 12.0 14.2
Maximum permitted inlet pressure and gas-ballast inlet pressure
bar gauge 0.5 0.5 0.5 0.5
Pa 1.5 x 1051.5 x 1051.5 x 1051.5 x 105
Maximum permitted outlet pressure
bar gauge 0.2 0.2 0.2 0.2
Pa 0.2 x 1050.2 x 1050.2 x 1050.2 x 105

A652–01–880 Issue Y Page 8 © Edwards Limited 2018. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Technical data
Table 3 - Performance data: High Vacuum mode
HIGH VACUUM MODE 
Parameter Units RV3 RV5 RV8 RV12
1-phase 3-phase 1-phase 3-phase 1-phase 3-phase 1-phase 3-phase
Gas-ballast control closed (position ‘0’)
Ultimate total pressure mbar 2 x 10-3 2 x 10-3 2 x 10-3 2 x 10-3
Pa 2 x 10-1 2 x 10-1 2 x 10-1 2 x 10-1
Gas-ballast control low flow (position ‘I’)
Ultimate total pressure mbar 3 x 10-2 3 x 10-2 3 x 10-2 3 x 10-2
Pa3333
Gas-ballast flow l min-1 5555
Maximum water vapour pumping rate kg h-1 0.06 0.04 0.06 0.04 0.06 0.04 0.06 0.04
Maximum water vapour inlet pressure mbar 27 18 16 11 10 7 7 5
Pa 2.7 x 1031.8 x 1031.6 x 1031.1 x 1031 x 1037 x 1027 x 1025 x 102
Gas-ballast control high flow (position ‘II’)
Ultimate total pressure mbar 1.2 x 10-1 1 x 10-1 6 x 10-2 6 x 10-2
Pa 1.2 x 1011 x 10166
Gas-ballast flow l min-1 14 14 16 16
Maximum water vapour pumping rate kg h-1 0.22 0.12 0.22 0.12 0.22 0.20 0.29 0.25
Maximum water vapour inlet pressure mbar 80 54 50 32 38 34 32 28
Pa 8 x 1035.4 x 1035 x 1033.2 x 1033.8 x 1033.4 x 1033.2 x 1032.8 x 103

© Edwards Limited 2018. All rights reserved. Page 9 Edwards and the Edwards logo are trade marks of Edwards Limited.
Technical data
A652–01–880 Issue Y
Table 4 - Performance data: High Throughput mode
HIGH THROUGHPUT MODE 
Parameter Units RV3 RV5 RV8 RV12
1-phase 3-phase 1-phase 3-phase 1-phase 3-phase 1-phase 3-phase
Gas-ballast control closed (position ‘0’)
Ultimate total pressure mbar 3 x 10-2 3 x 10-2 3 x 10-2 3 x 10-2
Pa3333
Gas-ballast control low flow (position ‘I’)
Ultimate total pressure mbar 6 x 10-2 6 x 10-2 4 x 10-2 4 x 10-2
Pa6644
Gas-ballast flow l min-1 5555
Maximum water vapour pumping rate kg h-1 0.06 0.04 0.06 0.04 0.06 0.04 0.06 0.04
Maximum water vapour inlet pressure mbar 27 18 16 11 10 7 7 5
Pa 2.7 x 1031.8 x 1031.6 x 1031.1 x 1031 x 1037 x 1027 x 1025 x 102
Gas-ballast control high flow (position ‘II’)
Ultimate total pressure mbar 1.2 x 10-1 1 x 10-1 6 x 10-2 6 x 10-2
Pa 1.2 x 1011 x 10166
Gas-ballast flow l min-1 14 14 16 16
Maximum water vapour pumping rate kg h-1 0.22 0.12 0.22 0.12 0.22 0.20 0.29 0.25
Maximum water vapour inlet pressure mbar 80 54 50 32 38 34 32 28
Pa 8 x 1035.4 x 1035 x 1033.2 x 1033.8 x 1033.4 x 1033.2 x 1032.8 x 103

A652–01–880 Issue Y Page 10 © Edwards Limited 2018. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Technical data
Table 5 - Performance characteristics
MODE
SELECTOR
POSITION
GAS BALLAST CONTROL
Closed (position ‘0’) Low flow (position ‘I’) High flow (position ‘II’)
High Vacuum mode Ultimate total pressure Ultimate total pressure Ultimate total pressure
mbar Pa mbar Pa mbar Pa
2 x 10-3 2 x 10-1 3 x 10-2 3 1.2 x 10-1 (RV3)
1.0 x 10-1 (RV5)
6 x 10-2 (RV8/12)
1.2 x 101(RV3)
1.0 x 101(RV5)
6.0 (RV8/12)
Use for the best
ultimate pressure Maximum water vapour pumping rate Maximum water vapour pumping rate
1-phase pumps 3-phase pumps 1-phase pumps 3-phase pumps
0.06 kg h-1 0.04 kg h-1 0.22 kg h-1 (RV3/5/8)
0.29 kg h-1 (RV12) 0.12 kg h-1 (RV3/5) 0.20 kg h-1 (RV8)
0.25 kg h-1 (RV12)
High Throughput mode Ultimate total pressure Ultimate total pressure Ultimate total pressure
mbar Pa mbar Pa mbar Pa
3 x 10-2 3 6 x 10-2 (RV3/5)
4 x 10-2 (RV8/12) 6 (RV3/5)
4 (RV8/12) 1.2 x 10-1 (RV3)
1.0 x 10-1 (RV5)
6 x 10-2 (RV8/12)
1.2 x 101(RV3)
1.0 x 101(RV5)
6.0 (RV8/12)
Use for continuous inlet pressure
above
50 mbar/5 x 103Pa
Maximum water vapour pumping rate Maximum water vapour pumping rate
1-phase pumps 3-phase pumps 1-phase pumps 3-phase pumps
0.06 kg h-1 0.04 kg h-1 0.22 kg h-1 (RV3/5/8)
0.29 kg h-1 (RV12) 0.12 kg h-1 (RV3/5) 0.20 kg h-1 (RV8)
0.25 kg h-1 (RV12)

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Edwards and the Edwards logo are trade marks of Edwards Limited.
Technical data
A652–01–880 Issue Y
2.2.2 Performance characteristics
Note: The performance characteristics described below are for use with hydrocarbon oil.
The positions of the mode selector and the gas-ballast control define the performance characteristics of the pump.
These performance characteristics are listed fully in Table 3 and Table 4.
Table 5 gives the ultimate vacuum and maximum water vapour inlet pressure for each of the six possible
combinations of control positions. The curves 0, I, and II in Figure 2 show the relationship between inlet pressure and
pumping speed for High Vacuum mode 
Figure 2 - Performance characteristics in High Vacuum mode (pumping speed against inlet pressure)

A652–01–880 Issue Y
Page 12 © Edwards Limited 2018. All rights reserved.
Edwards and the Edwards logo are trade marks of Edwards Limited.
Technical data
2.3 Mechanical data
2.4 Noise and vibration data
2.5 Lubrication data
Note: Edwards Material Safety Data sheets for the rotary pump oils are available on request.
Table 6 - Mechanical data
Parameter Reference data
Dimensions See Figure 3
Degree of protection (IEC 34-5: 1981)
Single-phase pumps
Three-phase pumps IP44 IP54
Maximum tilt angle 10°
Motor rotational speed
50 Hz electrical supply
60 Hz electrical supply 1470 r min-1
1760 r min-1
Maximum mass RV3 RV5 RV8 RV12
Pumps with motor, without oil 25.0 kg 25.0 kg 28.0 kg 29.0 kg
Table 7 - Noise and vibration data
Parameter Reference data
Sound pressure*
*Measured at ultimate vacuum 1 metre from the end of the pump to ISO 11201, High Vacuum mode ,
50 Hz operation.
Single-phase pumps
Three-phase pumps 48 dB (A) 50 dB (A)
Vibration severity†
†Measured at the inlet port to ISO 2372 (1974)
Single-phase pumps
Three-phase pumps Class 1C Class 1C
Table 8 - Lubrication data
Parameter Reference data
Recommended oil*
*To operate the pump when the ambient temperature is outside the limits specified in Section 2.1, or to
optimise the pump performance when pumping condensable vapours, a different oil may be needed.
Hydrocarbon-prepared pumps
PFPE-prepared pumps Edwards Ultragrade 19 Krytox 1506 or Fomblin 06/6
Oil capacity RV3 RV5 RV8 RV12
Maximum 0.70 litres 0.70 litres 0.75 litres 1.00 litres
Minimum 0.42 litres 0.42 litres 0.45 litres 0.65 litres