D395-93-880 Issue A
Page 26 © Edwards Limited 2011. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
5Maintenance
5.1 Safety
When you refer to a manual supplied as a Supplementary Publication, you must obey all of the WARNING and
CAUTION instructions in the manual.
A suitably trained and supervised technician must maintain the T-Station.
Allow the pumps to cool to a safe temperature before you start maintenance work.
Check that all the required parts are available and of the correct type before you start work.
Ensure that the maintenance technician is familiar with the safety procedures which relate to the products
pumped. Wear the appropriate safety-clothing when you come into contact with contaminated components.
Dismantle and clean contaminated components in a fume-cupboard.
Isolate the T-Station and other components in the system from the electrical supply so that they cannot be
operated accidentally.
Do not reuse O-rings and Co-Seals if they are damaged.
Dispose of components, grease and oil safely (refer to Section 6).
Protect sealing-faces from damage.
Leak-test the system after maintenance and seal any leaks found if you have disconnected any vacuum or
exhaust pipeline connections.
5.2 Maintenance plan
The following documents list the minimum maintenance operations necessary to maintain the T-Station in normal
use.
More frequent maintenance may be necessary if the T-Station has been used to pump corrosive or abrasive gases and
vapour. If necessary, adjust the maintenance plan according to your experience.
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.
If for any reason the turbo pump is removed from the T-Station platform, it is important to retain
and re-use the same fixing screws. If you have lost or cannot re-use any of these screws, you must
use the following type M5 X 12 mm CAP HD high tensile class 12.9. If you fail to follow this warning
and the turbo pump seizes, the stored energy in the turbo pump may cause some or all of the
screws to fail, this may result in the turbo pump being ejected from the T-Station base.
Diaphragm pump XDD1 A746-02-885
Rotary vane pumps E2M0.7 / E2M1.5 A371-32-880
Turbomolecular pumps EXT75DX / EXT255DX B722-40-880
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