Edwards xds35i, Инструкция по эксплуатации, Страница: 25 / 40

© Edwards Limited 2007. All rights reserved. Page 19
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A730-01-880 Issue E
5 Maintenance
5.1 Safety information
The XDS35i pump is designed to require little user maintenance. Observe the following guidelines when carrying out
maintenance on your pump:
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Ensure that maintenance is done by a suitably trained and supervised technician. Obey your local and
national safety requirements.
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Ensure that the maintenance technician is familiar with the safety procedures which relate to the products
processed by the pumping system.
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Check that all the required parts are available and are of the correct type before you start work. Refer to
Section 7.3.5 .
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Disconnect the pump and other components from the electrical supply so that they cannot be operated
accidentally.
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Allow the pump to cool before you start maintenance work.
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Do not re-use internal 'O' rings.
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Do not touch or inhale the thermal breakdown products of fluorinated materials which may be present in the
pump if the pump has been heated to 260 ºC and above. Fluorinated materials are safe in normal use but can
decompose into very dangerous substances (which may include hydrofluoric acid) if they are heated to 260 ºC
and above. The pump may have overheated if it was misused or if it was in a fire. Health and Safety Data
sheets for fluorinated materials used in the pump are available on request; contact your supplier or Edwards.
5.2 Maintenance plan
More frequent maintenance may be required if the pump is used to pump aggressive gases and vapours, such as
solvents, organic substances and acids, or if the pump is operated continuously at the higher end of its operating
temperature range.
WARNING
Obey the safety instructions given below and take note of appropriate precautions. If you do not,
you can cause injury to people and damage to equipment.
WARNING
Wait one minute for capacitor discharge after disconnecting the power supply before working on
the pump.
WARNING
The pump may be contaminated with the process chemicals that have been pumped during
operation. If so, ensure that the pump is decontaminated before maintenance and that you take
adequate precautions to protect people from the effects of dangerous substances if contamination
has occurred.