A313-01-880 Issue A
Page 28 © Edwards Limited 2008. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
5.3 Check the shaft-seals reservoir oil-level
Note: You can fill the shaft-seals reservoir while the pump is operating.
1. Refer to Figure 2. Look at the level of oil in the shaft-seals oil reservoir (3). If the oil-level is too low, continue at
Step 2 to fill the reservoir.
2. Remove the vented oil filler-plug from the top of the shaft-seals oil reservoir (3).
3. Pour new oil of the correct type (see Section 2.6) through the filler port and into the reservoir until the oil-level
reaches the top of the reservoir. Do not over-fill the reservoir; if you do, take care to mop up and dispose of any
excess oil.
4. Refit the vented oil filler-plug to the top of the shaft-seals oil reservoir (3).
5.4 Inspect the oil-level sight-glasses
1. Refer to Figure 2. Look at the oil-level sight-glass (16) on the drive end cover (2):
If the sight-glass is dirty, use a suitable cloth to wipe it clean.
If the sight-glass is damaged (that is, scratched, cracked or corroded), or if there are signs of oil leakage
from the sight-glass, you must replace it: contact your supplier or Edwards.
2. Look at the oil-level sight-glass (16) on the non-drive end cover (9):
If the sight-glass is dirty, use a suitable cloth to wipe it clean.
If the sight-glass is damaged (that is, scratched, cracked or corroded), or if there are signs of oil leakage
from the sight-glass, you must replace it: contact your supplier or Edwards.
5.5 Check the end cover oil level
Ensure that the correct grade of oil is used and that the oil-level in the reservoir is correct. If an
incorrect oil is used or if the oil-level is incorrect, pump performance may be affected and the
pump may be damaged.
The end covers will be under vacuum. To remove an oil filler-plug, undo it slowly until the vent
hole is visible, allow the pressure in the end-cover to rise to atmospheric pressure, then fully undo
and remove the oil filler-plug. If you do not, hot oil may be ejected from the end cover and cause
injury.
Ensure that the correct grade of oil is used and that the oil-levels in the HV pump are correct. If
an incorrect oil is used or if an oil-level is incorrect, pump performance may be affected and the
pump may be damaged.
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