A732-01-880 Issue D
Page 10 © Edwards Limited 2018. All rights reserved.
Installation
3.2 System design considerations
Consider the following points when designing the pumping system:
Avoid high levels of heat input into the pump from the process gases, otherwise the pump may overheat, and cause
the thermal overload device to open.
Ensure the foreline from the booster to the backing pump and the exhaust pipeline from the backing pump outlet
cannot become blocked. If an exhaust isolation valve is fitted, ensure the pump cannot be operated with the valve
closed. Refer to Section 3.6.
Dilute flammable mixtures to safe concentrations by providing an inert gas dilution purge. Contact the Edwards
applications team for further advice on dilution requirements if required and refer to Section 4.5.2.
Ensure the exhaust pipeline cannot become blocked. If an exhaust isolation valve is fitted, ensure
the pump cannot be operated with the valve closed.
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