6 = XDS1001 to 99903 = Voltage set to 220 - 240 V, 50/60 Hz, single-phase
4 = XDS5904 = Voltage set to 100/200 V, 50 Hz, single-phase
100/200 - 210 V, 60 Hz, single-phase
905 = Voltage set to 200 - 230/380 - 460 V, 50/60 Hz, three-phase
906 = Voltage set to 110 - 120 V, 50/60 Hz, single-phase
XDS Dry Pump
A726-01-880
Issue M Original
Declaration of Conformity
We, Edwards,
Crawley Business Quarter,
Manor Royal,
Crawley,
West Sussex, RH10 9LW, UK
declare under our sole responsibility, as manufacturer and person within the EU authorised to assemble the
technical file, that the product(s)
A72X – YY - ZZZ
Pump type Variant Motor description
X YY ZZZ
4 = XDS5 01 to 99 903 = Voltage set to 220 - 240V, 50 Hz, 6 = XDS10 230 – 240V, 60 Hz, Single phase
904 = Voltage set to 100/200V, 50 Hz,
100/200-210V, 60 Hz, single phase
905 = Voltage set to 200 - 230/380 - 460V, 50/60 Hz,
three phase
906 = Voltage set to 110V, 50 Hz, 115 - 120V, 60Hz,
Single phase
to which this declaration relates is in conformity with the following standard(s) or other normative
document(s)
EN1012-2:1996, A1: 2009 Compressors and Vacuum Pumps. Safety Requirements. Vacuum Pumps
EN61010-1: 2001 Safety Requirements for Electrical Equipment for Measurement, Control and
Laboratory Use. General Requirements
EN60034-1: 2010 Rotating electrical machines. Rating and performance
C22.2 61010-1-04: 2004 Sa fety requirements for electrical equipment for measurement, Control and
laboratory use – Part 1: General requirements
UL61010-1, 2nd Edition Safety requirements for electrical equipment for measurement, Control and
laboratory use – Part 1: General requirements
EN13463-1: 2009 Non-electrical equipment for use in potentially explosive atmospheres. Basic
method and requirements
EN13463-5: 2003 Non-electrical equipment for use in potentially explosive atmospheres. Basic
method and requirements
EN50581: 2012 Technical Documentation for the Assessment of Electrical and Electronic
Products with respect to the Restriction of Hazardous Substances
and fulfils all the relevant provisions of
2006/42/EC Machinery Directive
2006/95/EC Low Voltage Directive
2004/108/EC Electromagnetic Compatibility (EMC) Directive
94/9/EC ATEX Directive on use in Potentially Explosive Atmospheres
2011/65/EU* Restriction of Certain Hazardous Substances (RoHS) Directive
* i.e. The product(s) contain less than - 0.1wt% for hexavalent chromium, lead, mercury, PBB and PBDE; 0.01wt%
for cadmium - in homogeneous materials (subject to the exemptions allowed by the Directive). The RoHS Directive
does not legally apply to industrial vacuum equipment until July 2019 (July 2017 for instruments).
Note: This declaration cov e rs all product serial numbers from the date this Declaration was signed
onwards.
03.06.2013, Burgess Hill
Peter Meares
GV Technical Support Manager
This product has been manufactured under a quality system registered to ISO9001
Edwards and Edwards logo are trademarks of Edwards Limited.
A726-01-880 Issue M
CAUTION
WARNING
1Introduction
1.1Scope and definitions
This manual provides installation, operation and maintenance instructions for the Edwards XDS5 and XDS10 dry
pumps. You must use the XDS pump as specified in this manual. Read this manual before you install, operate and
maintain the XDS 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.
Warnings are given where failure to observe the instruction could result in injury or death to
people.
Cautions are given where failure to observe the instruction could result in damage to the equipment, associated
equipment and process.
Introduction
Throughout this manual, page, figure and table numbers are sequential.
The following IEC warning labels appear on the pump:
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 23
the laws of the Member States concerning equipment and protective systems intended for use in potentially
explosive atmospheres. (The ATEX Directive)
The ATEX Category 3 applies in respect o f potential ignition sources internal to the equipment. An ATEX
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 pote nt ial
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 flammab le materials or mixtures to pass through the pump while
within their explosive limits.
When flammable materials are present within the equipment you must:
Not allow air to enter the equipment.
Ensure the system is leak tight.
For further information, please refer to the back page of this instruction manual for the contact details of your
nearest Edwards.
The XDS pump is shown in Figure 1. Refer to Figure 1 for item numbers in brackets in the following descriptions.
The XDS pump is a compact, reliable vacuum pump which is suitable for use on vapour handling processes. The XDS
pump may be used for some pumping applications involving corrosive substances and particulates; for information on
pumping flammable gases, please refer to Section 4.5 and contact Edwards for any further assistance.
The body of the pump includes a fixed sc roll and an orbiting scroll. The orbiting scroll is driven by the electric motor
through an eccentric cam on the motor drive shaft. The movement of the orbiting scroll, meshed with the fixed scroll,
forms successive crescent shaped volumes in the pump. Ga s which enters the pump through the inlet is compressed
by the movement of the orbiting scroll and swept towards the centre of the fixed scroll. The compressed gas enters
the exhaust port near the centre of the stationary scroll and is exhausted from the pump through the outlet.
The XDS pump is a dry vacuum pump, as all the bearings, with their hydrocarbon lubricant, are isolated from the
vacuum space.
The inlet of the pump is fitted with a removable inlet strainer which prevents the entry of debris into the pump.
The pump mechanism is driven directly by a single- phase or three-phase electric motor. Single-phase motors are
fitted with an on/off switch (7) 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 you have incorporated suitable control equipment which must be manually reset), the
motor will restart.
The pump is air-cooled by a fan mounted at the opposite end to the motor.
The pump is mounted on a baseplate on rubber feet. Details of suitable vibration isolators and other accessories are
provided in Section 7.
1.4Gas-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 stages through the gas-ballast valve (not fitted on 05 variant). Alternatively,
an inert gas such as nitrogen can be supplied through a suitable external valve.
The pump scrolls are made from anodised aluminium and the motor housing made from aluminium only. All surfaces
of the pump which are exposed to the pumped gases are free from copper, zinc and cadmium.
Edwards and Edwards logo are trademarks of Edwards Limited.
1.6CSA Product classification
Type of protection against electric shockClass 1
Supply connection110-120 V, 50/60 Hz or 220-240 V, 50/60 Hz
Mode of operationContinuous
Protection against hazards of explosionNot protected
Protection against ingress of liquidsNot protected (IPXO)
Installation categoryII
Pollution degree2
Degree of mobilityPortable (bench mounted)
Edwards and Edwards logo are trademarks of Edwards Limited.
A726-01-880 Issue M
2Technical data
2.1Operating and storage conditions
Ambient temperature:
Operating range10 °C to 40 °C
Storage range-30 °C to 70 °C
Surface temperature of pump above ambient (when operating at ultimate) typically 45 °C
Maximum humidity (operation)90%
Altitudeup to 2000 m
2.2Performance
2.2.1General
General characteristics of the pumps are defined in Table 1 below. Characteristics shown are displacement, pumping
speed and maximum permitted interface pressures.
Technical data
Suckback on pump switch off typically 30 mbar ls-1 (leak tightness 1x10-6 mbar ls-1).
Maximum permitted inlet pressure and
gas-ballast inlet pressure
Maximum permitted outlet pressure *
*The XDS pumps can survive an excursion to 1 bar gauge in the exhaust line. However, under normal
operating conditions (with the pump running) the exhaust line pressure should be as close as possible to
atmospheric pressure. If the pump is operated with a raised exhaust line pressure this will accelerate tip
seal wear and lead to a loss of pumping performance.