Edwards Acoustic Enclosure User manual

NRD317880
Issue A
Original Instructions
Instruction Manual
Acoustic Enclosure for nXDS/XDS Scroll Pumps and EM/RV Rotary Vane
Pumps
Description Electrical Supply Item Number
nXDS/XDS Acoustic Enclosure 200-240 V 50/60 Hz NRD797000
nXDS/XDS Acoustic Enclosure 110-120 V 50/60 Hz NRY5C0000
RV/EM Acoustic Enclosure 200-240 V 50/60 Hz NRD318000
RV/EM Acoustic Enclosure 110-120 V 50/60 Hz NRD317000

This product has been manufactured under a quality system registered to ISO9001
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)
nXDS/XDS Acoustic Enclosure 200-240 V 50/60 Hz NRD797000
nXDS/XDS Acoustic Enclosure 110-120 V 50/60 Hz NRY5C0000
RV/EM Acoustic Enclosure 200-240 V 50/60 Hz NRD318000
RV/EM Acoustic Enclosure 110-120 V 50/60 Hz NRD317000
to which this declaration relates is in conformity with the following standard(s) or other
normative document(s)
EN61010-1: 2010 Safety Requirements for Electrical Equipment for Measurement,
Control and Laboratory Use. General Requirements
EN12100:2010 Safety of machinery. General principles for design. Risk
assessment and risk reduction.
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
2006/95/EC Low Voltage Directive
2012/19/EU Waste from Electrical and Electronic Equipment (WEEE) Directive
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 covers all product serial numbers from the date this Declaration was
signed onwards.
20.11.2014, Burgess Hill
Peter Meares
–Technical Support Manage
r
Date and Place
P200-08-880 Issue A

© Edwards Limited 2014. All rights reserved. Page i
Edwards and the Edwards logo are trademarks of Edwards Limited.
Contents
NRD317880 Issue A
Contents
Section Page
1 Introduction ....................................................................................... 1
1.1 Scope and definitions ................................................................................................... 1
2 Technical data .................................................................................... 2
2.1 Specifications ............................................................................................................. 2
3 Installation ......................................................................................... 3
3.1 Safety ......................................................................................................................3
3.2 Installing the XDS Acoustic Enclosure ................................................................................. 4
3.3 Installing RV EM Acoustic Enclosure ................................................................................... 5
4 Operation .......................................................................................... 8
4.1 Safety ......................................................................................................................8
4.2 Over temperature alarm ................................................................................................ 8
4.3 Buzzer test ................................................................................................................ 8
4.4 Pump Monitoring ......................................................................................................... 8
5 Maintenance ....................................................................................... 9
5.1 General .................................................................................................................... 9
5.2 Servicing .................................................................................................................. 10
5.3 Cleaning ..................................................................................................................10
6 Disposal .......................................................................................... 11
For return of equipment, complete the HS Forms at the end of this manual.
Illustrations
Figure Page
1 Specifications of XDS and RV/EM pumps ............................................................................. 2
2 Inserting XDS pump into Acoustic Enclosure ......................................................................... 4
3 Locating left hand panel on side of pump ........................................................................... 4
4 Fitting second cover to right hand side of pump ................................................................... 4
5 Attaching inlet and exhaust fittings .................................................................................. 5
6 Locating first panel on left hand side of pump ..................................................................... 6
7 Fitting second cover to right hand side of pump ................................................................... 6
8 Fitting end cover ......................................................................................................... 6
9 Removing front panel to view sight glass ............................................................................ 9
10 Removing panel to gain access to filler cap ......................................................................... 9
gp/0260/11/14

NRD317880 Issue A
Page ii © Edwards Limited 2014. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Contents
Tables
Table Page
1 Pump noise levels ........................................................................................................ 2
Associated publications
Publication title Publication number
Vacuum pump and vacuum system safety P400-40-100

© Edwards Limited 2014. All rights reserved. Page 1
Edwards and the Edwards logo are trademarks of Edwards Limited.
Introduction
NRD317880 Issue A
1Introduction
1.1 Scope and definitions
The Acoustic Enclosure is designed to be used in an industrial or laboratory environment. All Edwards XDS and nXDS
scroll pumps will fit the nXDS/XDS Acoustic Enclosure and all RV and EM pumps up to E2M28 will fit the RV/EM Acoustic
Enclosure.
The enclosure is designed to slot together without removable fixings and so requires no tooling to assemble or
dismantle it. It is powered by a power cable fitting into an IEC 320 socket.
Note: The power cable for the pump is connected to its own supply. This supply should have an external means of
isolation and not rely upon the on/off switch located on the pump.
Read this manual before installing and operating the Acoustic Enclosure. 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 process.
The following warning labels appear on the Acoustic Enclosure:
WARNING
Warnings are given where failure to observe the instruction could result in injury or death to
people.
Warning - refer to accompanying documentation.
Warning - risk of electric shock.

NRD317880 Issue A
Page 2 © Edwards Limited 2014. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Technical data
2Technicaldata
2.1 Specifications
Figure 1 - Specifications of nXDS/XDS and RV/EM pumps
The fuse rating is 5 amps, Type T, 20mm long x 5mm diameter (RS668-6010 or equivalent).
The Acoustic Enclosure can be used to attenuate the noise from the XDS, nXDS range of scroll pumps, EM and RV
pumps typically by the figures listed in Table 1.
Two fans are fitted. Fan 1 starts up when the power is on. Fan 2 is controlled by a thermal switch set to operate when
the internal temperature exceeds 35 ± 5°C.
Environmental conditions:
nXDS/XDS RV/EM
Dimensions: Length 778 mm
Width 442 mm
Height 580 mm
Dimensions: Length 790 mm
Width 285 mm
Height 460 mm
Mass: 37 kg Mass: 23 kg
Table 1 - Pump noise levels
XDS5/XDS10 8 dBA
XDS35i 9 dBA
nXDS 5 dBA
RV 7 dBA
E2M28 7 dBA
Altitude 2000 m
Ambient temperature 30°C

© Edwards Limited 2014. All rights reserved. Page 3
Edwards and the Edwards logo are trademarks of Edwards Limited.
Installation
NRD317880 Issue A
3 Installation
3.1 Safety
A suitably trained and supervised technician must install the Acoustic Enclosure.
Ensure that all equipment is safe and in a suitable condition to be installed in the enclosure.
For safety issues, refer to Edwards Vacuum Pump and Vacuum System Safety Publication P400-40-100 or
contact Edwards if in doubt.
Casters should be locked when the pump is in operation.
Route all electrical cables in a safe manner.
WARNING
Obey the safety instructions given below and take note of appropriate precautions. Failure to do
so can cause injury to people and damage to equipment.
WARNING
Care should be taken when removing the enclosure from the packaging and also when removing
the enclosure side panels.
WARNING
Use suitable lifting equipment or at least two people to lift the empty Acoustic Enclosure.
WARNING
Do not lift the Acoustic Enclosure with a pump installed.
WARNING
Be careful not to drop any of the enclosure panels during assembly/disassembly as this may either
damage the panel or cause injury.
WARNING
Do not install the enclosure on a slope. When the casters are unlocked the enclosure could move
and cause injury.

NRD317880 Issue A
Page 4 © Edwards Limited 2014. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Installation
3.2 Installing the nXDS/XDS Acoustic Enclosure
The various elements of the Acoustic Enclosure are designed to slot together without additional fixings.
Figure 2 - Inserting nXDS/XDS pump into Acoustic Enclosure
Figure 3 - Locating left hand panel on side of pump
Figure 4 - Fitting second cover to right hand side of pump

© Edwards Limited 2014. All rights reserved. Page 5
Edwards and the Edwards logo are trademarks of Edwards Limited.
Installation
NRD317880 Issue A
After removing all packaging:
Remove side panels by lifting (this will disengage the panel from the locating pins) and moving to the side. Be
careful not to drop a panel.
Insert nXDS/XDS pump - refer to Figure 2.
Attach inlet and exhaust fittings. Note that sufficient length will be needed to clear enclosure.
Locate first panel on left hand side of pump - refer to Figure 3.
Adjust pump position to suit.
Position pump power cable through hole provided.
Switch the pump start switch to ON.
Fit second cover to right hand side of pump - refer to Figure 4.
3.3 Installing RV EM Acoustic Enclosure
The various elements of the Enclosure are designed to slot together without additional fixings.
Figure 5 - Attaching inlet and exhaust fittings

NRD317880 Issue A
Page 6 © Edwards Limited 2014. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Installation
Figure 6 - Locating first panel on left hand side of pump
Figure 7 - Fitting second cover to right hand side of pump
Figure 8 - Fitting end cover

© Edwards Limited 2014. All rights reserved. Page 7
Edwards and the Edwards logo are trademarks of Edwards Limited.
Installation
NRD317880 Issue A
After removing all packaging:
Attach inlet and exhaust fittings. Note that an extension piece will be needed if an Exhaust Mist Filter (EMF)
or an inlet accessory is to be fitted - refer to Figure 5.
Locate first panel on left hand side of pump - refer to Figure 6.
Adjust pump position to suit.
Position pump power cable through hole provided.
Switch the motor start switch to ON.
Fit second cover on right hand side of pump - refer to Figure 7.
Fit end cover - refer to Figure 8.

NRD317880 Issue A
Page 8 © Edwards Limited 2014. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Operation
4 Operation
4.1 Safety
Plug the power cable into the IEC 320 socket at back of the enclosure.
Switch on the power.
Fan 1 should start up on the power being switch on.
Check there is airflow from the fan by placing a hand over the mesh at the opposite end of the box from the
fan.
Do not block the inlet of the fan or the ventilation mesh. Allow at least 50 mm clearance around the Acoustic
Enclosure.
If the internal temperature reaches 35 ± 5 °C the second fan will switch in.
4.2 Over temperature alarm
There is a warning buzzer on the front face of the bulkhead. This is triggered by a thermal switch inside the Acoustic
Enclosure, which is set to 50 ± 5 °C. The buzzer will be triggered if the fan fails and the pump continues running,
interruption of the power supply or similar event. If the pump overheats it will thermally protect itself.
The buzzer will run for at least 12 hours on battery back up.
4.3 Buzzer test
There is a push button test switch for checking that the battery backed up buzzer works. This can be tested either
with the unit connected to the mains supply or on battery back up.
4.4 Pump monitoring
It is recommended that the user should use appropriate techniques to monitor the pump temperature and initiate
protective measures in fault intolerant applications.
WARNING
This enclosure must only be operated in an upright position. Isolate power before removing the
pump from the enclosure.

© Edwards Limited 2014. All rights reserved. Page 9
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
NRD317880 Issue A
5Maintenance
5.1 General
Note: The unit is easily movable on its casters.
The Acoustic Enclosure requires no regular maintenance if the indicated temperature is within the guidelines.
For the RV EM pumps regular checks can be carried out.
Figure 9 - Removing front panel to view sight glass
Figure 10 - Removing panel to gain access to filler cap
To check the oil level, remove the front end panel (lift and pull towards you). The sight glass is visible
through the opening in the covers - refer to Figure 9.
If the oil level needs to be topped up, remove the panel to gain access to the filler cap - refer to Figure 10.
CAUTION
With the pump enclosed by the Acoustic Enclosure, regular checks of the pump oil level should be made.

NRD317880 Issue A
Page 10 © Edwards Limited 2014. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
The frequency of checks will depend on the particular application, but note that oil consumption will increase under
the following circumstances:
Running at elevated inlet pressures (either as a result of the application or a vacuum leak.)
Running with gas ballast.
Mist filter in conjunction with an oil return kit not fitted.
5.2 Servicing
The enclosure requires no regular servicing but it is suggested that the Acoustic Enclosure is inspected yearly to
ensure safe operation.
If the fan stops turning, check the electrical cable is still connected and that the fuse does not need replacing. If the
fan needs replacing a suitably trained and supervised technician must complete the task.
Ensure that the air duct is checked regularly and clean where appropriate.
Replace battery (PP9 Alkaline-Manganese dioxide cell) annually, or in case of failure (can be tested by sounding
buzzer).
Edwards spare part recommended:
There is no other servicing required.
5.3 Cleaning
The outside surface can be cleaned with a damp cloth and mild detergent. Do not allow water near the electrical
components.
Fan unit A726-01-804

© Edwards Limited 2014. All rights reserved. Page 11
Edwards and the Edwards logo are trademarks of Edwards Limited.
Disposal
NRD317880 Issue A
6Disposal
Dispose of any used equipment safely in accordance with all local and national safety and environmental
requirements.
Ensure the battery is disposed of safely in accordance with all local and national safety and environmental
requirements.

NRD317880 Issue A
Page 12 © Edwards Limited 2014. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
This page has been intentionally left blank.