EXT400/200PX and EXT400/200/30iPX split flow compound turbomolecular vacuum pumps, hereafter referred to as EXTPX split flow pumps. Please read and follow all instructions in this manual. The EXTPX split flow pump is designed for use with an Edwards 24 V EXDC160 drive module unless using Argon (please refer to Section 2.2) when an EXDC80 drive module may be recommended.
Power Limit Zone: The temperatures shown are pump local ambients. The tests were performed with a single radial fan cooling the pump. If extra cooling is added, extra performance can be obtained. Exact limits will be based on application requirements, cooling method and pump configuration; please consult Edwards to ensure suitability. Also refer to Section 3.7...
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An EXDC160 drive module is recommended for most applications. However, when pumping high concentrations of Argon (over 50% of gas mixture) an EXDC80 drive module is recommended to protect the pump against overheating. If in any doubt, please contact your local Edwards Vacuum Representative. CAUTION Do not use the EXTPX split flow pump to pump particulates or condensable media.
< 0.5 bar gauge (7 psig, 0.5 x 10 Pa gauge) If you wish to use vent pressures in excess of this value, please consult Edwards. Purge gas specification and data When purged with an inert gas, the pumps can be used to pump oxygen in concentrations above 20% by volume.
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13,000 Nm may be transmitted to the chamber for a very short time. It is the responsibility of the user to ensure that the vacuum system is capable of containing the rotor fragments in the event of a catastrophic failure. Contact Edwards for further information if required.
If necessary, use flexible pipe or bellows to reduce the transmission of vibration from the backing-pump to the EXTPX split flow pump. The EXTPX split flow pump is suitable for use with Edwards Rotary Vane, Scroll or diaphragm backing-pumps. The system performance may depend upon which pump is used, hence we recommend that you consult Edwards to help select an appropriate backing-pump for your application.
When you return the EXTPX split flow pump to an Edwards Service Centre please use the procedure included at the end of this manual. Please note that the instruction to drain all fluids does not apply to the lubricant in the EXTPX split flow pump oil-reservoir.
In these circumstances the pump must be returned to an Edwards Service Centre, where the pump will be dismantled and cleaned. Use the procedure given in the forms at the end of this manual to return the pump.
Kingdom, USA and a worldwide network of distributors. The majority of these employ service engineers who have undergone comprehensive Edwards training courses. Order spare parts and accessories from your nearest Edwards company or distributor. When you order, please state for each part required: Model and item number of your equipment.
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