A735-01-840 Issue B Introduction Scope and definitions This manual provides installation, operation and maintenance instructions for the Edwards range of accessories for the nXDS pump range. The accessories are shown in Figure 1. The Item Numbers for the accessories are listed in the appropriate sections.
The majority of these centres employ service Engineers who have undergone comprehensive Edwards training courses. Order spare parts and accessories from the nearest Edwards company or distributor. When ordering, please state for each part required: Model and Item Number of the equipment ...
The gas purge can be used to dilute flammable gases down to a safe level (Edwards recommends 1/4 of the Lower Explosive Limit).
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3 Nm. As a precaution, Edwards recommends that a complete a vacuum leak check be performed after this installation. Tip: Ensure the cooling fan operates correctly following the installation of the gas ballast adaptor.
A pressure relief valve is not fitted to the silencer. 5.1.1 Application WARNING The Edwards nXDS silencer is not recommended for use with pumping hazardous substances. 5.1.2 Connections The nXDS silencer has been manufactured with an NW25 fitting to enable fitting to the nXDS pump exhaust (Figure item 4).
(item 2) and polyester element (item 3) which need to be inspected periodically. Edwards recommends both are replaced every 9000 hours of pump use. The silencer has been designed to handle 10 cc of tip-seal dust without affecting the performance of the pump. Replacement kit A505-97-800 contains both items.
If using a plastic hose, avoid sharp bends which may kink the hose and restrict the exhaust line. Edwards recommends using reinforced plastic hose. Refer to the installation section of the nXDS pump instruction manual.
Mountable vibration isolators Description The Edwards mountable vibration isolators can be used to reduce the transmitted vibration from the pump to a mounting surface such as a system frame. The mountable vibration isolators have fixing holes to allow the pump to be bolted to the floor or system frame.
3. Using 5 mm bolts (not supplied), fix the vibration isolators bolted to the fixing surface or system frame. Edwards recommends the fitting of flexible tubing or bellows connections between the pump-inlet and the pump- outlet and the rest of the system, to prevent the transmission of stress to the vacuum pipelines and/or equipment.
The control cable is used to connect the nXDS pump directly to the RS485 or RS232 serial input on the control equipment or a PC, or alternatively, to an Edwards controller such as a TIC (Turbo Instrument Controller) or TAG (Turbo &...
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