BOC Edwards EO2K, Инструкция по эксплуатации

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EO2K, EO4K and EO6K Diffusion Pumps
IN
STALLATION
PAGE
20
Issue G 20 Aug 06
3. Get someone to lift the pump and hold it in position (so that the inlet locates onto your vacuum
system flange):
• One person can safely lift and hold EO2K and EO4K pumps.
• Two people are required to safely lift and hold EO6K pumps.
4. Secure the pump inlet to the vacuum system flange: refer to Section 3.4.2.
3.3.3 Free-standing installation
If the pump will be free-standing:
1. Lift the pump and move it to its operating location:
• One person can safely lift and move EO2K and EO4K pumps.
• Two people are required to safely lift and move EO6K pumps.
2. Fit additional supports to secure the pump.
3.4 Vacuum connections
3.4.1 System design
Consider the following points when you design your system:
• On all applications, we recommend that you fit a backing pressure-interlock to the backing outlet
pipeline to switch off the electrical supply to the pump heater if the pressure in the pipeline rises
to the critical backing pressure.
You must fit a backing pressure-interlock if you will use the EO pump to pump dangerous
substances. If you do not fit a pressure-interlock and the pressure in the outlet pipeline rises to the
critical backing pressure, fluid will backstream into the vacuum system and thermal breakdown of
the pump fluid may occur. Note that if you have a suitable backing pressure gauge, you may be able
to use the gauge to provide the necessary pressure signal for the pressure-interlock.
• Connecting pipelines should be as short as possible and have the largest possible diameter.
• Pipelines connected to the pump inlet and outlet must be self-supporting. Where this is not
possible, ensure that the pipelines impose as small a load as possible on the inlet and outlet flanges.
• You must be able to vent the pump to atmosphere through the backing pipeline or the pump inlet.
• Incorporate flexible pipelines in the backing pipeline to reduce the transmission of vibration and to
prevent loading of coupling joints. If you use flexible pipelines, you must ensure that you use
pipelines which have a maximum pressure rating which is greater than the highest pressure that can
be generated in your system. We recommend that you use BOC Edwards flexible pipelines.
WARNING
Use suitable lifting equipment or ensure that two or more people lift an EO6K pump. If
you do not, you can cause injury to people or damage the pump or other equipment.
Refer to Section 2.3 for the mass of the EO6K pump
WARNING
You must fit a backing pressure-interlock if you will use the EO pump to pump dangerous
substances.