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Installation
A352-03-880 Issue B
3 Installation
3.1 Safety
Ensure that the pump is suitable for the application. If there is any doubt, refer to the Edwards guidelines in the
Vacuum Pump and Vacuum Systems Safety manual. (See Associated Publications at the end of the contents list).
Obey the safety instructions listed below when installing the pump, especially when connecting the pump into an
existing system. Details of specific safety precautions are given at the appropriate point in the instructions.
The installation of the pump must be performed by a suitably trained and supervised technician.
Wear appropriate safety clothing when coming into contact with contaminated components.
Vent and purge the vacuum system before starting installation work.
Ensure that the installation technician is familiar with the safety procedures which relate to the pump oil
and the products handled by the pumping system. Take suitable precautions to avoid the inhalation of oil
mist and excessive skin contact with pump oil as prolonged exposure can be harmful.
It is recommended to protect the pump motor with a magneto-thermal circuit breaker. Select the rating of
the circuit breaker with respect to the current indicated on the motor.
Disconnect other components in the pumping system from the electrical supply so that they cannot be
operated accidentally.
3.2 System design considerations
Consider the following points when designing the pumping system.
Use a suitable valve to isolate the pump from the vacuum system to allow the pump to warm up before
pumping condensable vapours or to maintain vacuum when the pump is switched off.
Avoid high levels of heat input to the pump from the process gases, otherwise the pump may overheat and
seize.
If the pump is used in a high ambient temperature environment and has a high gas throughput, the
temperature of the pump body may exceed 70 ºC. Fit suitable guards to prevent contact with hot surfaces.
Make sure that the exhaust pipeline cannot become blocked. If the system has an exhaust isolation valve,
make sure that the pump cannot operate with the valve closed.
3.3 Unpack and inspect
Remove all packing materials, remove the pump from its packing box, remove the protective covers from the inlet
and outlet ports and inspect the pump. If the pump is damaged, notify the supplier and the carrier in writing within
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