© Edwards Limited 2014. All rights reserved. Page 17
Edwards and the Edwards logo are trademarks of Edwards Limited.
Installation
A301-05-880 Issue A
3.4 Fill the pump with oil
3.4.1 Hydrokinetic drive/gearbox
We recommend that the hydrokinetic drive/gearbox oil level is maintained at the recommended oil level shown in
Figure 8, item 5; if the oil level is above or below the recommended oil level, the performance of the EH pump may
be affected.
Do not allow the oil level to fall below the bottom of the reflector plate (Figure 8, item 4) or the EH pump may be
damaged.
1. Remove the hydrokinetic drive/gearbox oil filler plug (Figure 1, item 3).
2. Refer to Figure 8. Fill the hydrokinetic drive/gearbox with the recommended type of oil until the oil level
reaches the recommended oil level (5) at the top of the reflector plate (4) in the oil level sight glass (3).
3. Refit the hydrokinetic drive/gearbox oil filler plug.
3.4.2 Shaft seal reservoir
Edwards recommend filling the shaft seal reservoir so that the oil level is at the recommended oil level as shown in
Figure 8, item 2.
The EH pump can be operated as long as the oil level is above the bottom of the reflector plate. Do not allow the
shaft seal oil level to fall below the bottom of the reflector plate or the EH pump may be damaged. Use the same oil
that was used to fill the hydrokinetic drive/gearbox.
1. Remove the shaft seal reservoir vented oil filler plug (Figure 1 and 2, item 2).
2. Refer to Figure 8. Fill the shaft seal reservoir with oil until the oil level is at the recommended oil level (2) at
the top of the reflector plate (6).
3. Refit the vented oil filler plug.
Changing the oil in an EH pump from hydrocarbon to PFPE could potentially cause a safety hazard.
PFPE EH pumps are generally used in hazardous applications which may involve the pumping of
gases with high concentrations of oxygen. If hydrocarbon oil comes into contact with gases with an
oxygen concentration greater than 25%, an explosion can occur.
Converting an EH pump that has been used on Hydrocarbon oil for use on PFPE oil requires the
pump internals to be cleaned. This usually requires the pump to be serviced.
Ensure that the correct grade of oil is used and that the oil levels in the EH pump are correct. If
an incorrect oil is used or if an oil level is incorrect, EH pump performance may be affected and
the EH pump may be damaged, which will compromise its constructional safety.
Ensure that the correct vented filler plug is fitted in the shaft seal reservoir. If using a non-vented
plug, the reservoir will be pressurised and the oil sight glass may fracture.
To Next Page
Loading...
