© Edwards Limited 2012. All rights reserved. Page 27
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
A705-61-880 Issue M
5Maintenance
5.1 Safety information
A suitably trained and supervised technician must maintain the pump.
Ensure that the maintenance technician is familiar with the safety procedures which relate to the synthetic
oils and greases used and the products pumped.
Wear the appropriate safety-clothing when you come into contact with contaminated components, grease
and pump oil. Dismantle and clean contaminated components inside a fume-cupboard.
Use suitable lifting equipment and wear safety shoes when you replace the pump-motor or the pump
module.
Allow the pump to cool to a safe temperature before you start maintenance work.
Isolate the pump and other components in the process system from the electrical supply so that they can not
be operated accidentally.
Recheck the pump rotation direction if the electrical supply has been disconnected.
Do not reuse ‘O’ rings or gaskets if they are damaged.
Protect sealing-faces from damage.
Leak-test the system after installation work is complete and seal any leaks found to prevent leakage of
dangerous substances out of the system and leakage of air into the system: refer to Section 3.13.
Do not touch or inhale the thermal breakdown products of fluorinated materials which may be present if the
pump has overheated to 260 °C (500 °F) and above. These breakdown products are very dangerous. The
pump may have overheated if it was misused, if it malfunctioned, or if it was in a fire. Edwards Material
Safety Data Sheets for the fluorinated materials used in the pump are available on request: contact your
supplier or Edwards.
5.2 Maintenance plan
The plan in Table 12 details the maintenance operations we recommend to maintain the pump in normal operation.
Instructions for each operation are given in the section shown.
In practice, the frequency of maintenance is dependent on your process:
In clean processes, you may be able to decrease the frequency of maintenance operations.
In harsh processes you may have to increase the frequency of maintenance operations.
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.
Particular caution should be exercised when working with Fomblin oil that may have been exposed
to temperatures above 260 °C. Refer to the Edwards Materials Data Sheets for detailed
information.
To Next Page
Loading...
Need help?
General
