Edwards nXDS Instruction Manual

Dry vacuum scroll pump

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Dry Vacuum Pump

nXDS Scroll Pump

INSTRUCTION MANUAL

DESCRIPTION

nXDS6i

nXDS10i

nXDS15i

nXDS20i

nXDS6iC

nXDS10iC

A73501880_I

ITEM NUMBER

DESCRIPTION

A73501983

nXDS15iC

A73601983

nXDS20iC

A73701983

nXDS6iR

A73801983

nXDS10iR

A73502983

nXDS15iR

A73602983

nXDS20iR

edwardsvacuum.com

ITEM NUMBER

A73702983

A73802983

A73503983

A73603983

A73703983

A73803983

Original instructions

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Summary of Contents for Edwards nXDS

Page 1 Dry Vacuum Pump nXDS Scroll Pump INSTRUCTION MANUAL edwardsvacuum.com DESCRIPTION ITEM NUMBER DESCRIPTION ITEM NUMBER nXDS6i A73501983 nXDS15iC A73702983 nXDS10i A73601983 nXDS20iC A73802983 nXDS15i A73701983 nXDS6iR A73503983 nXDS20i A73801983 nXDS10iR A73603983 nXDS6iC A73502983 nXDS15iR A73703983 nXDS10iC A73602983 nXDS20iR A73803983 Original instructions...
Page 2 Decades of Expertise: With 30+ years in the industry, Ezzi Vision is highly experienced in vacuum technology and its applications. Quality Assurance: We ensure that every Edwards pump meets the highest standards of performance and reliability. Innovative Solutions: Leading in technological advancements, we provide the latest Edwards pumps, known for their innovation and efficiency.
Page 3 Serial Comms Interface Instruction Manual A73501860 Trademark credit Edwards and the Edwards logo are trademarks of Edwards Limited, Innovation Drive, Burgess Hill, West Sussex RH15 9TW. Disclaimer The content of this manual may change from time to time without notice. We accept no liability for any errors that may appear in this manual nor do we make any expressed or implied warranties regarding the content.
Page 4 Contents 1. Safety and compliance ................7 1.1 Definition of Warnings and Cautions ..............7 1.2 Safety symbols ....................8 2. Introduction ..................... 9 2.1 Scope of this manual ..................9 2.2 ATEX directive implication ................9 2.3 Description ...................... 10 2.4 Pump controller ....................
Page 5 5.1 Operational modes..................32 5.2 Manual operation ................... 32 5.2.1 Start and stop ..................33 5.2.2 Standby ....................33 5.3 Parallel control and monitoring ..............34 5.4 Analogue speed control .................. 34 5.4.1 Hardware configuration ..............36 5.4.2 Operation ................... 36 5.5 Auto-run ......................
Page 6 9.2 Accessories...................... 49 9.2.1 Silencer....................50 9.2.2 Gas ballast adaptor ................51 9.2.3 Gas ballast adaptor blank ..............51 9.2.4 Vibration isolators ................51 9.2.5 Inlet/exhaust filter ................51 9.2.6 Exhaust nozzle ..................52 9.2.7 Chemical resistance conversion kit ............ 52 9.2.8 Electrical cables ..................
Page 7 List of Figures Figure 1: nXDS scroll pump ....................11 Figure 2: Quick start guide (manual control mode) .............. 12 Figure 3: nXDS6i Performance characteristics ..............18 Figure 4: nXDS10i Performance characteristics ..............19 Figure 5: nXDS15i Performance characteristics ..............19 Figure 6: nXDS20i Performance characteristics ..............
Page 8 A73501880_I - Safety and compliance 1. Safety and compliance For safe operation from the start, read these instructions carefully before you install or commission the equipment and keep them safe for future use. Read all the safety instructions in this section and the rest of this manual carefully and make sure that you obey these instructions.
Page 9 A73501880_I - Safety and compliance 1.2 Safety symbols The safety symbols on the products show the areas where care and attention is necessary. The safety symbols that we use on the product or in the product documentation have the following meanings: Warning/Caution An appropriate safety instruction must be followed or caution to a po- tential hazard exists.
Page 10 Directive 2014/34/EU. The pumping mechanism and its mechanical components exposed to the "INTERNAL ATMOSPHERES" within the nXDS pump system is defined as: equipment group II, equipment category 3 - in accordance with the ATEX directive. This designation ONLY applies to the mechanical pumping mechanism, which is hermetically sealed from the external pump system and its operating environment.
Page 11 Figure: nXDS scroll pump. The nXDS pump is a dry vacuum pump as all the bearings, with their hydrocarbon lubricant, are isolated from the vacuum space. The pump is suitable for use on vapour handling processes and may be used for some pumping applications involving corrosive substances.
Page 12 Remotely via serial communications or digital and analogue process control (parallel), via the 15‑way D‑type logic interface connector. Refer to Logic interface on page 11. Figure 1 nXDS scroll pump 1. Lifting eye 2. NW25 inlet port 3. Gas ballast control 4.
Page 13 The logic interface is designed to support both serial control, parallel control and monitoring, operating though one connector. For serial control either RS232 or RS485 can be selected. For Control Modes refer to Table : nXDS Control modes. For Logic interface data refer to Logic interface data on page 22.
Page 14 A73501880_I - Introduction OPERATION SELECT STATUS SECTION The pump will remain off (factory de- Electrical supply MAINS POW- fault). Apply power connection The POWER INDICATOR will illumi- page 30 nate. The pump will accelerate up to full running speed.* The RUN INDICATOR will flash while START BUT- Start and stop Start the pump...
Page 15 A73501880_I - Introduction Table 1 nXDS Control modes Manual/ Configuration Control mode Section Introduction page 9 Manual control via Figure: Quick nXDS user inter- start guide face (manual con- trol mode) in this manual Serial control via (TIC) *Turbo In-...
Page 16 A73501880_I - Introduction Note: Table : nXDS Control modes shows our additional products, such as DX/nEXT Turbo pumps and active gauges that can be controlled at the same time using the various control methods displayed above. Page 15...
Page 17 A73501880_I - Technical data 3. Technical data WARNING: If the nXDS pump is operated outside the specified limits, the pump housing may become hot. 3.1 Operating and storage conditions Table 2 Operating and storage conditions Operating and storage conditions nXDS Ambient temperature range (storage) - 30 °C to + 70 °C...
Page 18 3.2.1 Pumping media WARNING: Do not use the nXDS pump to pump pyrophoric materials or dust. The pump is designed to pump the following gases: ▪...
Page 19 A73501880_I - Technical data Table 5 Performance characteristics Description nXDS6i nXDS10i nXDS15i nXDS20i Gas ballast position 2 x 10 7 x 10 7 x 10 3 x 10 Pump ultimate(mbar) Gas ballast position 5 x 10 4 x 10 4 x 10 6 x 10 Gas ballast flow Gas ballast position...
Page 20 A73501880_I - Technical data Figure 4 nXDS10i Performance characteristics Figure 5 nXDS15i Performance characteristics Page 19...
Page 21 A73501880_I - Technical data Figure 6 nXDS20i Performance characteristics 3.3 Mechanical data Table 6 General mechanical data Parameter nXDS Overall dimensions (L x W x H) 432 x 282 x 302 mm Maximum tilt angle 10 degrees Nominal rotational speed 1800 rpm (30 Hz) 6i ‑...
Page 22 A73501880_I - Technical data 3.3.1 Sound and vibration data Table 7 Sound and vibration data Parameter nXDS 52.0 dB (A) ± 2.5 Sound pressure, measured at ultimate vacuum 1 metre from the end of the Declared dual number noise emission val-...
Page 23 200 W Turbo Instrument Controller (TIC) or Turbo Controller, or Turbo and Active Gauge controller (TAG). A suitable connector mating half must be used (not supplied) to connect the nXDS pump to the customer control system. Refer to Table:...
Page 24 Pin 9. 0 V Control Reference 0 V reference for ALL control and status signals listed within this table. START / STOP - Control Connect to Pin 2 (0 V) to START the Input nXDS pump system. Page 23...
Page 25 Parallel or Serial con- trol modes. NORMAL ‑ Status out- Logic LOW when the pump rotational speed is at normal speed or above. 3.6 LED indicators Figure 7 LED indicators The nXDS pump has eight indicator LED's Page 24...
Page 26 A73501880_I - Technical data Table 13 LED indicators Description Details Power indicator Indicates that electrical mains supply to the pump is Run indicator Indicates that the pump is running. Refer to Start and stop on page 33. Standby mode indicator Indicates that the Standby mode has been selected. Refer to Standby on page 33.
Page 27 If not, injury to people and damage to equipment can result. Prevent any part of the human body coming into contact with the vacuum. The nXDS pump is not intended for pumping explosive gases continuously (refer to ATEX directive implication on page 9).
Page 28 A73501880_I - Installation Figure 8 Installation drawing 1. (4x) Rubber feet Note: All dimensions in mm. External dimensions are the same for all variants. Page 27...
Page 29 A73501880_I - Installation 4.3 Unpack and inspect WARNING: Use suitable lifting equipment to move the nXDS pump. The maximum pump mass is 27 kg. Mechanical lifting equipment should be attached to the lifting eye; Loose slings should not be used.
Page 30 If the pump is operated with the exhaust line blocked, high pressure may be generated in the exhaust line pipework. Refer to Figure: nXDS scroll pump. Before connecting the pump to the vacuum system, remove the plastic cap from the inlet and exhaust, and ensure that the inlet strainer is fitted to the pump inlet port.
Page 31 The conductor must be a minimum of 14 AWG. Use the M5 x 10 screw and shake proof washer located on the rear of the pump housing (refer to Figure: nXDS scroll pump) to secure the earth conductor to the pump.
Page 32 A73501880_I - Installation To control the pump using the hardware parallel interface, refer to Parallel control and monitoring on page 34 for more information. To use the serial interface or to work with a mixture of parallel and serial control, refer to manual A73501860. Page 31...
Page 33 A fine dust may be emitted from the exhaust of the scroll pump during start up, particularly when the pump is new or if new tip seals are fitted. 5.1 Operational modes The nXDS pump implements three control modes: Manual Control Mode ‑ using buttons on user interface panel. ▪...
Page 34 A73501880_I - Operation Figure 9 User interface panel 1. Mains power connector 2. Power connected indicator 3. Start button with indicator 4. Standby button with indicator 5. Increase standby speed button with 6. Decrease standby speed button with indicator indicator 7.
Page 35 (up to 10 mA). 5.4 Analogue speed control The Analogue Speed input is a process control source which enables the nXDS Scroll pump to run at variable operating speeds. This speed control source is an alternative to standby speed control.
Page 36 A73501880_I - Operation Figure 11 Logic interface connections - analogue speed control 1. Start switch 2. Analogue control switch 3. nXDS pump logic interface Note: 0.1 V  1% of Default Run Speed. Figure 12 Analogue speed control Note: Voltages below 6.7 V will result in a clamped speed of 67% of full speed.
Page 37 A73501880_I - Operation 5.4.1 Hardware configuration Using the 15‑way D‑type connector (Figure: nXDS scroll pump, item 7) apply the following signal configurations to enable the Analogue Speed Control source (refer to Table: Logic interface connector pins): Connect the Analogue Speed Enable control input (pin 1) to the 0 V Control Reference (pin 2).
Page 38 Ensure that any vacuum system isolation valve is closed (if fitted). With the mains supply to the pump isolated, connect a recommended lead to the electrical socket on the pump (refer to Figure: nXDS scroll pump). Apply power. Start the pump system using the appropriate control source, that is, using the Start...
Page 39 Table: Logic interface connector pins, pin 3) in parallel control mode or a Stop command in serial control mode. Vent the nXDS pump system using the gas ballast control or the valve on the inlet. Isolate the Mains supply. Page 38...
Page 40 WARNING: In order to maintain the ATEX certification, all maintenance work must be carried out in accordance with this nXDS instruction manual, the Replacement tip seal manual and the nXDS maintenance manual, only using our genuine spare parts. WARNING: Disconnect the pump and other components from the electrical supply to prevent accidental operation.
Page 41 Whenever the pump is disconnected from the vacuum system, or on an annual basis, we recommend: ▪ Removing the inlet strainer from the pump inlet (refer to Figure: nXDS scroll pump) and remove any debris that may have accumulated. ▪...
Page 42 For information on how to replace the nXDS tip‑seals and Health and Safety, refer to the nXDS replacement tip seal kit instruction manual A73502840 which is included on the CD manual.
Page 43 It is possible for an experienced technician, who is suitably trained, to perform maintenance and repair on nXDS pumps up to and including bearing replacement. We have developed a detailed maintenance manual and instructional video (part number A73501713) that will enable an experienced technician to undertake this work.
Page 44 A73501880_I - Maintenance Table 15 Flashing service codes Service flash Comments See section code Pump performance Check the pump performance (service indi- ON 1s / OFF 1s check. cator) on page 41 Replace the pump bearings (service indica- ON 3s / OFF 1s Pump bearing service.
Page 45 A73501880_I - Fault finding 7. Fault finding 7.1 The pump has failed to start or has stopped ▪ The electrical supply fuse has blown. ▪ The ambient temperature is too high. ▪ The cooling air supply is insufficient or is too hot. ▪...
Page 46 A73501880_I - Fault finding Figure 13 Poor ultimate vacuum flow chart 7.4 The pump is noisy If the pump is noisy, refer to Figure: Noisy pump flow chart. Page 45...
Page 47 A73501880_I - Fault finding Figure 14 Noisy pump flow chart 7.5 The pump surface temperature is high ▪ The ambient temperature is too high. ▪ The cooling fan is not running. ▪ The process gas is too hot or the maximum continuous operating pressure has been exceeded.
Page 48 A73501880_I - Fault finding Table 16 Flashing error codes Error flash Error flash Comment Actions position sequence Check whether the pump is not run- ssssss Overload timeout. ning under constant high pressure or the inlet or outlet is not blocked. Cycle the power to the pump and Controller software er- see whether the error code appears...
Page 49 A73501880_I - Storage and disposal 8. Storage and disposal 8.1 Storage Use the following procedure to store the pump: Shut down the pump as described in Shut down on page 38. Disconnect the pump from the electrical supply. Place and secure protective covers over the inlet and outlet ports. Non-condensing conditions shall be assured to avoid condensation from quick temperature changes during storage and transport.
Page 50 A73501880_I - Service and spares 9. Service and spares 9.1 Introduction Our products, spares and accessories are available from our companies in Belgium, Brazil, China, France, Germany, Israel, Italy, Japan, Korea, Singapore, United Kingdom, U.S.A and a world‑wide network of distributors. The majority of these centres employ service engineers who have undergone our comprehensive training courses.
Page 51 5. Exhaust nozzle 6. Vibration isolators 7. Chemical resistance conversion kit 8. Pump‑to‑controller cable (not shown) 9.2.1 Silencer A silencer is available for the nXDS pump. Refer to Connect to the vacuum system page 29 for guidance on its use. Page 50...
Page 52 A73501811 9.2.3 Gas ballast adaptor blank This adaptor kit allows the conversion of a standard nXDS pump into an nXDS‑R version. The gas ballast control is replaced with a blank adaptor so that the gas ballast cannot be accidentally opened. This feature is useful for applications such as rare gas recirculation or gas recovery.
Page 53 A50509000 9.2.7 Chemical resistance conversion kit This adaptor kit allows a standard nXDS pump to be converted into an nXDS‑C version. This conversion may be necessary if the pump is used on applications involving corrosive substances. For more information, contact us.
Page 54 A73501880_I - Service and spares Table 24 Pump-to-controller cables Product description Ordering information 1 m cable D39700835 2 m cable D39700836 5 m cable D39700837 9.3 Service Our products are supported by a worldwide network of our service centres. Each service centre offers a wide range of options including equipment decontamination, service exchange, repair, rebuild and testing to factory specifications.
Page 55 Table 25 Tip‑seal kit Product description Ordering information Tip‑seal kit A73501801 9.4.2 Cooling fan Used to replace the cooling fan located inside the nXDS fan cowl. Refer to Figure: nXDS scroll pump, item 4. Table 26 Cooling fan Product description...
Page 56 A73501880_I - Service and spares 9.4.6 Bearing replacement kit (not field serviceable) Used when the pump has reached a long run service interval. Specific training is required to replace the bearings on nXDS pumps. See Replace the pump bearings (service indicator) on page 42 for details of our options for providing this training.
Page 57 EU Declaration of Conformity This declaration of conformity is issued under the sole responsibility of the manufacturer: Edwards Ltd Documentation Officer Jana Sigmunda 300 Innovation Drive Lutín , 78349 Burgess Hill Czech Republic West Sussex T: +42(0) 580 582 728 RH15 9TW documentation@edwardsvacuum.com...
Page 58 You must retain the signed legal declaration for future reference This declaration becomes invalid if modifications are made to the product without prior agreement. Jan Večeřa – General Manager Petr Šmérek – Engineering Manager Scientific Vacuum Division, Lutín, CZ Lutín, CZ This product has been manufactured under a quality management system certified to ISO 9001:2015...
Page 59 Declaration of Conformity Edwards Ltd Documentation Officer documentation@edwardsvacuum.com Innovation Drive Burgess Hill West Sussex RH15 9TW This declaration of conformity is issued under the sole responsibility of the manufacturer. nXDS6i scroll pump 100-127/200-240V, 50/60Hz A735-01-983 nXDS10i scroll pump 100-127/200-240V, 50/60Hz...
Page 60 You must retain the signed legal declaration for future reference This declaration becomes invalid if modifications are made to the product without prior agreement. Signed for and on behalf of Edwards Ltd Petr Šmérek – Engineering Manager Jan Večeřa – General Manager Scientific Vacuum Division, Lutín, CZ...
Page 61 ADDITIONAL LEGISLATION AND COMPLIANCE INFORMATION EMC (EU, UK): Class A Industrial equipment Caution: This equipment is not intended for use in residential environments and may not provide adequate protection to radio reception in such environments. RoHS (EU, UK): Material Exemption Information This product is compliant with no Exemptions REACH (EU, UK) This product is a complex article which is not designed for intentional substance release.
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Page 65 edwardsvacuum.com...

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