Edwards EDS 200, Инструкция по эксплуатации

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CAUTION: HIGH NOISE LEVELS
Hearing loss due to high noise level. Depending on the operating conditions, higher noise
levels can be achieved than specified in the technical data. Take suitable hearing
protection measures.
8.1 Media compatibility
See Normal operation (on page 24). For a list of materials in contact with the process gas,
see Technical data (on page 17).
If you use the system on an application for which it is not suitable, you may invalidate your
warranties. If in doubt, contact Edwards.
8.2 Start-up
1. Ensure that any isolation valves in the process pipework are in the correct positions
(exhaust must be open).
2. Switch on the cooling water for water cooled pumps. For air cooled pumps ensure the
heat exchanger fan is powered and running.
3. Switch on or open the purge gas supply line and ensure right setting. Refer to
Connecting purge gas (on page 29).
4. Start the EDS pump by switching on the electrical supply.
The pump is ready for process when the stator temperature, measured next to the stator
thermal switch, reaches 40°C. (note this process-ready temperature may be different,
depending on your application)
8.3 Manual shut-down
1. Close the pump-inlet isolation-valve (if fitted).
2. Leave the EDS pump operating for sufficient time such that the pump is thoroughly
purged of any process gases. If condensable fluids have been pumped, operate the EDS
pump for at least 40 minutes with all purges on.
3. Switch off the EDS pump.
4. Close or switch off the purge gas supply line.
5. For water cooled pumps only keep the water cooling on for 10 minutes, then switch off
the cooling water.
NOTICE:
If you switch off water-cooling by closing both cooling-water inlet and outlet,
temperature may rise and result in unacceptable high water pressure and the water
circuit may leak.
8.4 Unplanned shut-down and alarms
Refer to Pump body thermal snap switch (on page 34) for instrument trip points.
If the pump stops unexpectedly whilst processing corrosive or condensable vapours
internally, it must be fully purged for sufficient time to ensure it is free of corrosives or
liquids. Otherwise the pump may corrode and be damaged.
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A41802880_C - Operation