Installation; Safety; System Design - Edwards A373-30-940 Instruction Manual

3

Installation

3.1

Safety

If you use a hydrocarbon oil in this pump, you must not use the pump to process oxygen in
concentrations greater than 25 % in volume. If you do, there is a risk of fire or explosion in the
oil-box of the pump.
You must not use the E2M28 or E2M30 pump to pump hazardous substances.
Obey the safety instructions listed below and take note of appropriate precautions. If you do not,
you can cause injury to people and damage to equipment.
A suitably trained and supervised technician must install the pump.

Wear the appropriate safety-clothing when you come into contact with contaminated components.

Vent and purge your vacuum system before you start installation work.

Ensure that the installation technician is familiar with the safety procedures which relate to the pump-oil

and the products processed 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.
Disconnect the other components in the pumping system from the electrical supply so that they cannot be

operated accidentally.
Safely route any electrical supply cables so that they cannot accidentally trip people.

You must ensure that the E2M28 or E2M30 pump is suitable for your application. If you have any doubts as to

the suitability of the pump for your application, refer to the Edwards guidelines on vacuum pump and
vacuum system safety (refer to the Associated Publication at the end of the contents list at the front of this
manual).
3.2

System design

Consider the following points when you design your pumping system:
Use a suitable inlet-valve to isolate the pump from your vacuum system if you need to allow the pump to

warm up before you pump condensable vapours, or if you need 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, and cause the motor thermal overload device to open.
If you use the pump in a high ambient temperature and have a high gas throughput, the temperature of the

pump-body may exceed 70 °C and you must fit suitable guards to prevent contact with hot surfaces.
Make sure that the exhaust pipeline cannot become blocked. If you have an outlet-isolation valve, make sure

that you cannot operate the pump with the valve closed.
© Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
WARNING
WARNING
WARNING
A373-10-880 Issue R
Page 9