Related Manuals for Edwards XDD1 115 V AC
Summary of Contents for Edwards XDD1 115 V AC
- Page 1 XDD1 ‐ 115/230 V and 24 V DC Diaphragm Pumps INSTRUCTION MANUAL Publication Number: A746‐03‐885 Issue: A Original Instructions edwardsvacuum.com...
- Page 2 Declaration of Conformity Edwards Ltd, Innovation Drive, Burgess Hill, West Sussex, RH15 9TW, UK The following product • XDD1 AC Diaphragm Pump A74602983 • XDD1 AC Diaphragm Pump A74603983 • XDD1 24 V DC Diaphragm Pump A74603991* Is in conformity with the relevant requirements of European CE legislation:...
- Page 3 P200-10-019 Issue D 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...
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Page 4: Copyright Notice
A746‐03‐885A ‐ Copyright notice Copyright notice ©Edwards Limited 2018. All rights reserved. Trademark credits Edwards and the Edwards logo are trademarks of Edwards Limited, Innovation Drive, Burgess Hill, West Sussex RH15 9TW. -
Page 5: Table Of Contents
A746‐03‐885A ‐ Contents Contents Copyright notice ....................ii Trademark credits ....................ii Introduction Safety information ......................1 Technical data Installation Electrical connection ....................10 XDD1 dual‐voltage motor .................. 10 XDD1 24 V dc ..................... 11 Replacing the fuse on the circuit board (only XDD1 24V) Configure the XDD1 24V dc internal speed setting ............15 Configuring the XDD1 24V dc for external analogue (0 ‐ 10 V) speed control .......................... 16 Configuring the XDD1 24V dc for PWM speed control ..........16 Notes regarding the motor speed ................17 Use and operation Installing in a vacuum system ..................18 Prior to use ........................18 During operation ......................18 Pumps with dual‐voltage motor ................ 19 Pumps with 24 V dc voltage ................ - Page 6 A746‐02‐885A ‐ List of Figures List of Figures Figure 1: General view of XDD 1 with dual‐voltage motor ............4 Figure 2: General view of XDD 1 24 V DC ................. 5 Figure 3: Dimensional drawing XDD 1 (dual‐voltage motor) ............ 8 Figure 4: Dimensional drawing XDD 1 24 V DC ................ 9 Figure 5: Adjust the supply voltage ..................10 Figure 6: Replacing the motor fuse (dual‐voltage motor) ............11 Figure 7: Removal of cover screw ..................12 Figure 8: Adjustment of cover ....................13 Figure 9: Removal of defective fuse ..................13 Figure 10: Cover reassembly ....................14 Figure 11: Installation of cover screw ..................14 Figure 12: Internal speed setting ................... 15 Figure 13: View of the disassembled pump head parts ............22 Figure 14: Tools required ....................... 23 Figure 15: Remove the fitting at the pump head ..............24 Figure 16: Remove the handle ...
- Page 7 A746‐02‐885A ‐ List of Tables List of Tables Table 1: Electrical data ......................6 Table 2: Performance data ....................... 6 Table 3: Environmental operating and storage data ..............7 Table 4: Mechanical data ......................7 Table 5: Materials data ......................7 Table 6: Logic interface connector pins ................. 11 Table 7: Configuration details for terminal ST1B ..............16 Table 8: Pin connections for 15 way D connector ..............17 Table 9: Troubleshooting ....................... 32 Table 10: Spare parts ......................35 Page iii...
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Page 9: Introduction
A746‐03‐885A ‐ Introduction Introduction Safety information Remove all packing material, remove the product from its packing‐box, remove the protective covers from the inlet and outlet ports and keep them, inspect the equipment. If the equipment is damaged, notify the supplier and the carrier in writing within three days; state the item number of the product together with the order number and the supplier’s invoice number. Retain all packing material for inspection. . WARNING: Do not use the equipment if it is damaged. If the equipment is not used immediately, replace the protective covers. Store the equipment in suitable conditions. Read and obey this manual before installing or operating the equipment. Transport the pump at the provided handle or the recessed grip. The following symbols appear in this document: WARNING: Refer to accompanying documentation. WARNING: Isolate equipment from mains. ‐ risk of electric shock. WARNING: Hot surfaces. WARNING: Use protective equipment. Use the equipment for the intended use only, i. e. for generation of vacuum. Prevent any part of the human body from coming in contact with the vacuum. Obey notes on correct vacuum and electrical connections. Pumps with 24 V DC motor: The pump has no on/off switch. The user has to provide a suitable line disconnector. Page 1... - Page 10 A746‐03‐885A ‐ Introduction Make sure that the individual components are only connected, combined and operated according to their design and as indicated in the instructions for use. If the equipment is brought from cold environment into a room for operation, allow the equipment to warm up (pay attention to water condensation on cold surfaces). Make sure ventilation is adequate if pump is installed in a housing or if ambient temperature is elevated. If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. Obey all relevant safety requirements (regulations and guidelines) and adopt suitable safety measures. Provide a firm level platform for the equipment and check that the system to be evacuated is mechanically stable and that all fittings are secure. Note: Flexible elements tend to shrink when evacuated. Due to the high compression ratio of the pumps, pressure at the outlet port might be generated being higher than the max. permitted pressure compatible with the mechanical stability of the system. WARNING: Obey maximum permitted pressures and pressure differences, see Technical data on page 6. Do not operate the pump with overpressure at the inlet. WARNING: Do not permit any uncontrolled pressurizing (e. g. make sure that the exhaust pipeline cannot become blocked). If you have an exhaust‐isolation valve, make sure that you cannot operate the equipment with the valve closed. Risk of bursting! Ensure that the system design does not allow the exhaust pipeline to become blocked: Avoid overpressure of more than 0.2 bar in case inert gas is connected. The diameter of the inlet and outlet pipeline should be at the least as large as the diameter of the pump connection pipelines. Adopt suitable measures in case of differences, e. g. using the equipment outdoors, installation in altitudes of more than 1000 m above mean sea level, conductive pollution or moisture. WARNING: Pay attention to symbol “hot surfaces” on the equipment. Adopt suitable measures to ...
- Page 11 A746‐03‐885A ‐ Introduction WARNING: The pumps are not suitable to pump dangerous or explosive gases or explosive or flammable mixtures. Ensure that the materials of the wetted parts are compatible with the pumped substances, see Technical data on page 6. Adopt suitable measures to prevent the release of dangerous, explosive, corrosive or polluting fluids. Use inert gas for gas ballast or venting if necessary. The user must take suitable precautions to prevent any formation of explosive mixtures in the expansion chamber. In case of a diaphragm crack, mechanically generated sparks, hot surfaces or static electricity may ignite these mixtures. Take adequate precautions to protect people from the effects of dangerous substances (chemicals, thermal decomposition products of fluoroelastomers), wear appropriate safety clothing and safety glasses. Obey applicable regulations when disposing of chemicals. Take into consideration that chemicals may be polluted. WARNING: Pumps with dual‐voltage motor: The motor is shut down by a thermal cutout in the winding. Manual reset is necessary. Switch off the pump or isolate the equipment from mains. Wait approx. five minutes before restarting the pump. WARNING: Pumps with 24 V DC voltage: The motor is protected by a temperature sensor at the circuit board. Avoid high heat supply (e. g. due to hot process gases). Ensure sufficient air admittance if pump is installed in a housing. Due to the residual leak rate of the equipment, there may be an exchange of gas, albeit extremely slight, between the environment and the vacuum system. Adopt suitable measures to prevent contamination of the pumped substances or the environment. Ensure that in case of failure, the pump and the vacuum system turn always into a safe status. In case of leaks in the manifold pumped substances may leak into the environment or in the pump housing or the motor. Obey especially all notes on use and operation and on maintenance. Failure of the pump (e. g. due to power failure) must not lead to a critical dangerous situation under any circumstances.
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Page 12: Figure 1 General View Of Xdd 1 With Dual-Voltage Motor
A746‐03‐885A ‐ Introduction Use only genuine spare parts and accessories. Otherwise safety and performance of the equipment as well as the electromagnetic compatibility of the equipment might be reduced. Figure 1 General view of XDD 1 with dual‐voltage motor 1. Handle (removable) 5. Fuse holder 2. Inlet (small flange) NW16 6. Mains switch 3. Pump feet (adjustable) 7. Mains input 4. Voltage selector switch 8. Outlet (silencer) Page 4... -
Page 13: Figure 2 General View Of Xdd 1 24 V Dc
A746‐03‐885A ‐ Introduction Figure 2 General view of XDD 1 24 V DC 1. Cover of the circuit board 2. Inlet (small flange) NW 16 3. Male 15 pin D‐connector 4. Outlet (silencer) at lower side 5. Screw to secure cover Page 5... -
Page 14: Technical Data
A746‐03‐885A ‐ Technical data Technical data Table 1 Electrical data Parameter XDD1 115/230 V 50/60 Hz XDD1 24 V DC Motor power 0.08 0.064 Maximum permitted range Attention* 24 V DC of supply voltage (±10%) 100‐120 V 50/60 Hz 200‐230 V 50/60 Hz Maximum rated current: 100‐120 V 50/60 Hz 1.6 / 1.7 ‐ 200‐230 V 50/60 Hz 0.8 / 0.85 ‐ 24 V DC ‐ Motor protection Thermal cut‐out, manual Temperature sensor on the reset PCB (current limitation) Fuse 20 mm x 5 mm, 250 V, 2.5 A Fuse 7 AF type T * Voltage selection switch Table 2 Performance data XDD1 115/230 V ... -
Page 15: Table 3 Environmental Operating And Storage Data
A746‐03‐885A ‐ Technical data Table 3 Environmental operating and storage data Parameter XDD1 115/230 V XDD1 24 V DC Degree of protection IEC 529 IP 40 IP 20 Permitted ambient temperature °C ‐10 to +60 / +10 to +40 storage / operation Permitted relative atmospheric 30 to 85 moisture during operation (no condensation) Maximum operating altitude 2000 IEC rated pollution degree Sound level Area of use Indoor use only Table 4 Mechanical data Parameter XDD1 115/230 V XDD1 24 V DC Mass Overall dimensions Refer to Figure 3 Refer to Figure 4 on on page 8 page 9 Inlet connection Small flange NW 16 Outlet connection... -
Page 16: Figure 3 Dimensional Drawing Xdd 1 (Dual-Voltage Motor)
A746‐03‐885A ‐ Technical data Figure 3 Dimensional drawing XDD 1 (dual‐voltage motor) Page 8... -
Page 17: Figure 4 Dimensional Drawing Xdd 1 24 V Dc
A746‐03‐885A ‐ Technical data Figure 4 Dimensional drawing XDD 1 24 V DC Page 9... -
Page 18: Installation
A746‐03‐885A ‐ Installation Installation Note: A suitably trained or qualified technician must carry out the following procedures. Electrical connection XDD1 dual‐voltage motor CAUTION: Ensure that the motor is correctly configured for your electrical supply. If you operate the pump when the motor is not correctly configured for the electrical supply, you will damage the motor. CAUTION: Do not change the voltage selector switch while the pump is connected to the mains supply. Figure 5 Adjust the supply voltage 1. Voltage selector switch 1. Selecting 115 covers a voltage supply range of 100 V to 120 V. 2. Selecting 230 covers a voltage supply range of 200 V to 240 V. Ensure that the voltage shown on the voltage selector switch (Figure 5 on page 10, item 1) corresponds with your electrical supply voltage. If it does not, you must change the configuration of the pump motor using the voltage selector switch to match your supply voltage. Use a screw driver to adjust the selector switch to the correct voltage. Page 10... -
Page 19: Xdd1 24 V Dc
A746‐03‐885A ‐ Installation WARNING: Ensure that the electrical installation of the XDD1 mains pump conforms with your local and national safety requirements. It must be connected to a suitably fused and protected electrical supply and suitable earth point. For electrical data refer to Table 1 on page 6. Figure 6 Replacing the motor fuse (dual‐voltage motor) Carefully remove the fuse holder at the side of the pump (refer to Figure 1 on page 4, item 5). 2. Replace the defective fuse with a 2.5 A type T and secure the fuse carrier back into its holder. XDD1 24 V dc The pump has been factory set to a constant pumping speed when connected to a 24 V DC (=/‐10%) supply. The pump can also be controlled using an external analogue 0‐10 V signal. Use a suitable connector mating half (not supplied) to connect the electrical supplies and your control equipment to the connector on the logic interface cable. When you make the electrical connections to the XDD 1, refer to Table 6 on page 11 for full details of the logic interface connections. Table 6 Logic interface connector pins Pin number Signal Control / monitor: 0 V signal ‐ XDD 1 identity Speed (0‐10 V) To control motor speed 8, 13, 14 Electrical supply: 0 V Use all pins for connection! 1, 6, 11 Electrical supply 24 V Use all pins for connection! -
Page 20: Replacing The Fuse On The Circuit Board (Only Xdd1 24V)
A746‐03‐885A ‐ Replacing the fuse on the circuit board (only XDD1 24V) Replacing the fuse on the circuit board (only XDD1 24V) WARNING: Separate the pump from mains. Wait until live parts are discharged. Identify and eliminate the cause of failure prior to restart. CAUTION: Attention: Electrostatic Sensitive Device (ESD). All work related to the circuit board must be carried out in a ESD protected area or under ESD protective measures! 1. Unscrew at the cover. Figure 7 Removal of cover screw Page 12... -
Page 21: Figure 8 Adjustment Of Cover
A746‐03‐885A ‐ Replacing the fuse on the circuit board (only XDD1 24V) 2. Slide the cover aside carefully and only as far as necessary. Figure 8 Adjustment of cover 3. Remove the defective fuse with a tweezer and replace with a new one of the same type. Figure 9 Removal of defective fuse 1. Fuse F7 AF, 125 V, 2 x 7 mm Page 13... -
Page 22: Figure 10 Cover Reassembly
A746‐03‐885A ‐ Replacing the fuse on the circuit board (only XDD1 24V) 4. Assemble cover after replacing the fuse. Figure 10 Cover reassembly 5. Screw cover Figure 11 Installation of cover screw Page 14... -
Page 23: Configure The Xdd1 24V Dc Internal Speed Setting
A746‐03‐885A ‐ Replacing the fuse on the circuit board (only XDD1 24V) Figure 12 Internal speed setting Position 1 ‐ zero speed, set for external motor speed signal Position 2 ‐ normal motor speed 1700 rpm (factory set) Position 3 ‐ maximum motor speed 2400 rpm 1. Potentiometer setting 2. Terminal board (ST1A/ST1B), connection of control line (supply voltage and control signal; see print on the circuit board). Configure the XDD1 24V dc internal speed setting There are two internal speed settings, use the following procedure to adjust the internal speed control (refer to Figure 12 on page 15). Remove the screw which secures the cover to the circuit board (refer to Figure 2 on page 5, item 1) Move the cover carefully and only as far as necessary. Using a screw driver, turn the potentiometer to one of two positions. Set to position 2 for normal speed or position 3 if maximum throughput is required (refer to Figure 12 on page 15). Assemble the cover in reverse order. Page 15... -
Page 24: Configuring The Xdd1 24V Dc For External Analogue (0 - 10 V) Speed Control
A746‐03‐885A ‐ Replacing the fuse on the circuit board (only XDD1 24V) Configuring the XDD1 24V dc for external analogue (0 ‐ 10 V) speed control Remove the screw which secures the cover to the circuit board (refer to Figure 2 on page 5, item 1). Move the cover carefully and only as far as necessary. Using a screw driver turn the potentiometer anti‐clockwise to position 1 (refer to Figure 12 on page 15). Assemble the cover in reverse order. Apply external analogue 0‐10 V signal for motor speed control. Voltage input: analogue 0 V..10 V <0.5 V : Pump stopped 0.5 V to 10 V : Linear increase of the motor speed (~100 rpm to 2400 rpm) Note: Pump runs smoothly only at speeds > 200 rpm (> ~0.9 V). The pump is factory set for 0‐10 V speed control when the potentiometer is in position 1. Configuring the XDD1 24V dc for PWM speed control Remove the screw which secures the cover of the circuit board) refer to Figure 2 on page 5, item 1). Move the cover carefully. Using a screwdriver turn the potentiometer anti‐clockwise to position 1 (refer to Figure 12 on page 15). 2. Reconfigure ST1B for Pulse‐Width Modulation (PWM) control by moving the white wire. Control signal (setting the motor speed): Table 7 Configuration details for terminal ST1B Terminal ST1B V‐ PWM ‐... -
Page 25: Notes Regarding The Motor Speed
A746‐03‐885A ‐ Replacing the fuse on the circuit board (only XDD1 24V) Table 8 Pin connections for 15 way D connector Internal wire in Control Line from Pin Number Assignment back of 15 way D connector Black Control/monitor: 0 V signal GND Signal XDD1 identity (with TIC) White Speed (0‐10 V) of To Control motor PWM: 5 V to max 24 V or speed voltage input: 0V to 10 V DC (max 24 V) (depending on the control signal input for motor speed) 8, 13, 14 Blue Electrical supply 0 V Use all 3 pins for connection 1, 6, 11 Electrical supply 24 V Use all 3 pins for connection Notes regarding the motor speed Operating the pump at high motor speeds increases the pump throughput, this will also cause the pump to generate more heat. Ensure there is adequate ventilation especially when using the pump within confined spaces or enclosures. Operating the pump at low motor speeds increases the ultimate vacuum performance, this will also increase the lifetime of the diaphragm and valves. Page 17... -
Page 26: Use And Operation
A746‐03‐885A ‐ Use and operation Use and operation Installing in a vacuum system The pump can be mounted in any orientation. Avoid throttling losses by using connecting pipes with large diameter and keep them as short as possible. Reduce the transmission of vibration and prevent loading due to rigid pipelines. Insert elastic hoses or flexible elements as couplings between the pump and rigid pipes. Note: Flexible elements tend to shrink when evacuated. Use a suitable valve to isolate the pump from the vacuum system to allow the pump to warm up before condensable vapours are pumped or to clean the pump before it is switched off. Connect the exhaust to a suitable treatment plant to prevent the discharge of dangerous gases and vapours to the surrounding atmosphere. Use a catchpot to prevent the drainage of contaminated condensate back into the pump. Prior to use Note: Max. ambient temperature: 40 °C. Make sure ventilation is adequate if pump is installed in a housing or if ambient temperature is elevated. Keep a distance of min. 20 cm between fans and ambient parts. When assembling, ensure vacuum‐tightness. After assembly, check the complete system for leaks. During operation CAUTION: Do not start or operate the pump if pressure at the outlet is higher than 1.1 bar absolute. Attempts to start or operate the pump at higher pressure may cause blockade and damage of the motor. The pump achieves its pumping speed, ultimate total vacuum and vapour pumping rate only at operating temperature (after approx. 15 minutes). Prevent internal condensation, transfer of liquids or dust. The diaphragm and valves will be damaged, if liquids are pumped in significant amounts. Page 18... -
Page 27: Pumps With Dual-Voltage Motor
A746‐03‐885A ‐ Use and operation Pumps with dual‐voltage motor Motor is shut down by a thermal cutout in the winding. Manual reset is necessary. Switch off the pump or isolate the equipment from mains. Wait approx. five minutes before restarting the pump. Identify cause of failure and eliminate. Note: Pump starts again after power failure. Pumps with 24 V dc voltage The motor is protected by a temperature sensor at the circuit board. Shutdown Short term Fault Action Has the pump been exposed to condensate? Allow the pump to continue to run at atmospheric pressure with inlet open for a few minutes. Has the pump been exposed to media which Check and clean pump heads if necessary. may damage the pump materials or forms deposits? Long term Take measures as described in section short‐term shutdown. Separate pump from the apparatus. Close inlet and outlet port (e. g. with transport caps). Store the pump in dry conditions. Page 19... -
Page 28: Maintenance
A746‐03‐885A ‐ Maintenance Maintenance Ensure that maintenance is done only by suitably trained and supervised technicians. Ensure that the maintenance technician is familiar with the safety procedures which relate to the product processed by the vacuum system and that the equipment, if necessary, is appropriately decontaminated before starting maintenance. Obey local and national safety regulations. WARNING: Before starting maintenance vent the system, isolate the pump and other components from the vacuum system and the electrical supply, drain condensate and allow sufficient cooling of the pump. Before starting maintenance, wait two minutes after isolating the equipment from mains to allow the capacitors to discharge. In order to comply with law (occupational, health and safety regulations, safety at work law and regulations for environmental protection) vacuum pumps, components and measuring instruments returned to the manufacturer can be repaired only when certain procedures are followed. Read form HS1 and fill out form HS2, which can be found at the back of printed manuals or can be downloaded from http://edwardsvacuum.com/HSForms/. Replacing diaphragms and valves WARNING: Please read section Replacing diaphragms and valves completely before starting maintenance. Note: The images of the pumps may differ slightly, this does not influence replacing the diaphragm and valves. All bearings are encapsulated and are filled with long‐life lubricant, under normal operating conditions these parts are maintenance free. The valves and the diaphragms are wear parts. If the rated ultimate vacuum is no longer achieved, the pump interior, the diaphragms and the valves must be cleaned and the diaphragms and valves must be checked for cracks or other damage. Depending on individual cases it may be efficient to check and clean the pump heads on a regular basis. In case of normal wear the lifetime of the diaphragms and valves is > 10000 operating hours. CAUTION: Prevent internal condensation, transfer of liquids or dust. The diaphragm and valves will be damaged, if liquids are pumped in significant amount. If the pump is exposed to corrosive gases or vapour or in case of deposits, maintenance should be carried out frequently. Page 20... - Page 29 A746‐03‐885A ‐ Maintenance Note: Regular maintenance will improve the lifetime of the pump and also protect both man and environment. WARNING: Before starting maintenance vent the system, isolate the pump and other components from the vacuum system and the electrical supply. Drain condensate if applicable, avoid the release of pollutants. Allow sufficient cooling of the pump. CAUTION: Ensure that the pump cannot be operated accidentally. Never operate the pump if covers or other parts of the pump are disassembled. Never operate a defective or damaged pump. Ensure that the maintenance technician is familiar with the safety procedures which relate to the products processed by the pumping system. The pump might be contaminated with the process chemicals that have been pumped during operation. Ensure that the pump is decontaminated before maintenance and take adequate precautions to protect people from the effects of dangerous substances if contamination has occurred. WARNING: Wear appropriate safety‐clothing when you come in contact with contaminated components. WARNING: For cleaning or removing deposits of the valves and diaphragms, use a suitable solvent. The use of any solvents must be used in accordance with your local health and safety regulations. Page 21...
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Page 30: Figure 13 View Of The Disassembled Pump Head Parts
A746‐03‐885A ‐ Maintenance Figure 13 View of the disassembled pump head parts 1. Housing cover 7. Diaphragm 2. VS seal 8. Diaphragm clamping disc with connecting 3. Bearing flange screw 4. Housing 9. Head cover 5. Rod 10. Valve 6. Diaphragm support disc 11. VS seal Page 22... -
Page 31: Figure 14 Tools Required
A746‐03‐885A ‐ Maintenance Figure 14 Tools required 1. Diaphragm key SW 46 (included in service kit) 2. Open‐ended wrench w/f 14 3. Hex key w/f 4/5 4. Phillips screw driver size 2 Page 23... -
Page 32: Cleaning And Inspecting The Pump Heads
A746‐03‐885A ‐ Maintenance Cleaning and inspecting the pump heads Use open‐ended wrench to remove fitting at the pump head and remove together with connecting hose. Note: Do not remove bearing flange (1). Figure 15 Remove the fitting at the pump head 1. Bearing flange Remove two screws at the handle and remove together with handle. Figure 16 Remove the handle WARNING: Never remove parts by using a spiky or sharp‐edged tool (e. g. screw driver), we recommend to use a rubber mallet or compressed air (to be blown carefully into port). Use hex key to remove six socket head screws from pump head and remove upper housing (housing cover and head cover). Page 24... -
Page 33: Figure 17 Remove The Housing Cover And Head Cover
A746‐03‐885A ‐ Maintenance Figure 17 Remove the housing cover and head cover 1. Remove head cover from housing cover and check valves. Note position of valves and remove. 2. Replace valves if necessary. 3. If necessary, use a suitable solvent to remove deposits. 4. Check diaphragm for damage and replace if necessary. Figure 18 Remove the head cover from the housing cover Page 25... -
Page 34: Replacing The Diaphragm
A746‐03‐885A ‐ Maintenance Replacing the diaphragm WARNING: Never use a spiky or sharp‐edged tool to lift the diaphragm. 1. Lift diaphragm carefully. 2. Apply pressure to the clamping disc beside the diaphragm to bring connecting rod into upper turning point position if necessary. 3. Use diaphragm key to grip under the diaphragm to the diaphragm support disc. 4. Apply pressure to the diaphragm clamping disc to bring the diaphragm into lower turning point position. Press diaphragm key against diaphragm clamping disc and unscrew diaphragm support disc with diaphragm. 5. If the old diaphragm is difficult to separate from the support disc, immerse the assembly in a suitable solvent in order to aid separation of the two parts. Figure 19 Lift the diaphragm CAUTION: Check for washers under clamping disc. Do not mix the washers from the different heads. Make sure that the original number is reassembled at the individual pump head. 6. Position new diaphragm between diaphragm clamping disc with square head screw and diaphragm support disc. Note: Position diaphragm with white PTFE side to diaphragm clamping disc (to pump chamber). Page 26... -
Page 35: Assembling Pump Heads
A746‐03‐885A ‐ Maintenance Figure 20 Position a new diaphragm 7. Lift diaphragm at the side and position carefully together with diaphragm clamping disc and diaphragm support disc in the diaphragm key. CAUTION: Avoid damage of the diaphragm: Do not crack diaphragm in a way that light lines at the diaphragm upper side occur. 8. Smaller number of washers: The pump will not attain final vacuum. More washers: Clamping disc will hit head cover; noise or even blockage of the pump. Figure 21 Diaphragm clamping disc Assembling pump heads WARNING: Do not turn or change housing covers! 1. Make sure that the square head screw of the diaphragm clamping disc is correctly seated in the guide hole of the diaphragm support disc. 2. Assemble diaphragm clamping disc, diaphragm and diaphragm support disc to connecting rod. 3. Position washers if available between diaphragm support disc and rod. Page 27... -
Page 36: Figure 22 Assemble The Diaphragm Assembly To The Connecting Rod
A746‐03‐885A ‐ Maintenance Figure 22 Assemble the diaphragm assembly to the connecting rod 4. Bring diaphragm into a position in which diaphragm is in contact with housing and centred with respect to bore. Figure 23 Position the diaphragm Assemble head cover and valves. Check for correct position (refer to Figure 24 on page 29). Page 28... -
Page 37: Figure 24 Assemble The Head Cover And Valves
A746‐03‐885A ‐ Maintenance Figure 24 Assemble the head cover and valves CAUTION: Obey position and orientation of the head covers and the valves definitely. Figure 25 Scheme pump head with head covers Page 29... -
Page 38: Figure 26 Scheme Pump Head With Head Covers And Valves
A746‐03‐885A ‐ Maintenance Figure 26 Scheme pump head with head covers and valves 2. Valves at the inlet 1. Valves at the outlet (kidney-shaped opening beside valve) (round centred opening under valve) 6. Position housing cover. 7. Move housing cover slightly to make sure that the head covers are correctly positioned. 8. Screw in six socket head screws fixing housing cover crosswise first slightly, then tighten. Note: Do not tighten until head cover is in contact with housing, max. torque 6 Nm. Page 30... -
Page 39: Assembling Fittings
A746‐03‐885A ‐ Maintenance Figure 27 Position the housing cover 9. Assemble handle with screws and tighten. Note: Check for correct position of the handle over the centre of gravity of the pump. The handle is in correct position if the end of the handle is positioned over the end of the housing cover. Figure 28 Assemble the handle Assembling fittings 1. Use open ended wrench to reconnect fittings with connection hose to pump heads. 2. Fix the ring nut when tightening the hollow bolt. Page 31... -
Page 40: If The Pump Does Not Achieve The Ultimate Pressure
A746‐03‐885A ‐ Maintenance Figure 29 Assemble the fitting at the pump head If the pump does not achieve the ultimate pressure In case the diaphragms and valves have been replaced, a run‐in period of several hours is required before the pump achieves its ultimate vacuum. If pump does not achieve the ultimate total pressure: Check hose connectors between pump heads and manifolds for leaks. If necessary recheck pump chamber. Table 9 Troubleshooting Fault Possible cause Remedy Pump fails to start or Supply voltage is missing or too Check or connect supply stops immediately. low? voltage. Only 24 V DC version: Check control signal. Control signal for motor speed is missing? Pressure in outlet pipeline too Remove blockade in line, open high? valve. Only pumps with dual‐voltage Manual reset is necessary. motor: Switch off the pump or isolate Motor overloaded? the equipment from mains. Wait approx. five minutes before restarting the pump. Identify cause of failure and ... - Page 41 A746‐03‐885A ‐ Maintenance Table 9 Troubleshooting (continued) Fault Possible cause Remedy Pump does not achieve Centring ring not correctly Check pump with a vacuum ultimate total pressure positioned or leak in the pipeline gauge directly at pump inlet or normal pumping or vacuum system? port, check connections and speed. line. Long narrow line? Use line with larger diameter, length as short as possible. Pump has been exposed to Run pump at atmospheric condensate? pressure for a few minutes. Deposits have been formed Clean and inspect pump heads. inside the pump? Valves or diaphragm damaged? Replace valves and/or diaphragms. Outgasing substances or vapour Check process parameters. generated in the process? Only 24 V DC version: Ensure sufficient cooling of the Pump temperature too high pump or reduce inlet pressure. (reduced motor speed)? Pump too noisy. Atmospheric or high pressure at ...
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Page 42: Storage And Disposal
A746‐03‐885A ‐ Storage and disposal Storage and disposal Storage Use the following procedure to store the pump: Close the vacuum system isolation valve to prevent suckback into the vacuum system. Switch off the pump using the on/off switch on the motor. Disconnect the pump from the electrical supply. Purge your vacuum system and the pump with dry nitrogen and disconnect the pump from your vacuum system. Place and secure protective covers over the inlet and outlet ports. Store the pump in cool, dry conditions until required for use. Disposal Dispose of the pump and any components from it safely in accordance with all local and national safety and environmental requirements. Particular care must be taken with components which have been contaminated with dangerous process substances. Do not incinerate fluoroelastomer seals and O‐rings. Page 34... -
Page 43: Spares And Accessories
A746‐03‐885A ‐ Spares and accessories Spares and accessories List of spare parts Table 10 Spare parts Item number Description A746‐01‐700 Inlet flange spare XDD1 A746‐01‐701 VS seal spare XDD1 A746‐01‐702 Exhaust silencer spare XDD1 A746‐01‐800 Diaphragm service kit XDD1 A746‐01‐703 Fan cover white, XDD 1, 115/230 V, 50/60 Hz A746‐01‐704 Motor cover white, XDD 1, 24 V DC A746‐01‐705 Anti‐vibration mount Page 35... - Page 44 A746‐03‐885A ‐ Spares and accessories This page has been intentionally left blank. Page 36...
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- Page 47 Download the latest documents from www.edwardsvacuum.com/HSForms/, follow the procedure in HS1, fill in the electronic HS2 form, print it, sign it, and return the signed copy to Edwards. Note: If we do not receive a completed HS2 form, we will not accept the return of the...
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