A705-61-880 Issue M
Page ii © Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Contents
5 Maintenance ..................................................................................... 27
5.1 Safety information ......................................................................................................27
5.2 Maintenance plan .......................................................................................................27
5.3 Check the gearbox oil-level and fill the gearbox with oil (if necessary) .......................................28
5.4 Inspect the gas ballast system ........................................................................................29
5.5 Inspect the pipelines and connections ..............................................................................29
5.6 Inspect the interstage relief valve and replace the hinge bushes, valve flap and valve 'O' ring
(if necessary) ............................................................................................................30
5.7 Change the gearbox oil and clean the oil-level sight-glasses ....................................................32
5.8 Relubricate the high-vacuum bearings ..............................................................................33
5.9 Flush the cooling jacket ...............................................................................................36
5.10 Replace the interstage relief valve ..................................................................................36
5.11 Replace the Pump-Motor ..............................................................................................37
5.11.1 Remove the Pump-Motor ..............................................................................................37
5.11.2 Fit the new pump-motor ...............................................................................................38
5.12 Replace the coupling insert ...........................................................................................41
5.13 Relubricate the motor bearings ......................................................................................41
5.13.1 General requirements ..................................................................................................41
5.13.2 Relubrication intervals .................................................................................................42
5.14 Replace the motor bearings ...........................................................................................42
5.15 Overhaul the pump .....................................................................................................42
5.16 Fault finding .............................................................................................................43
6 Storage and disposal ........................................................................... 45
6.1 Storage ...................................................................................................................45
6.2 Disposal ...................................................................................................................45
7 Spares, service and accessories .............................................................. 47
7.1 Introduction .............................................................................................................47
7.2 Service ....................................................................................................................47
7.3 Spares and maintenance kits ..........................................................................................47
7.4 Accessories ...............................................................................................................47
7.4.1 Exhaust Silencers .......................................................................................................47
7.4.2 Exhaust-Purge Kit .......................................................................................................47
7.4.3 Booster Connection Kits ...............................................................................................47
7.4.4 Indirect Cooling Kits ....................................................................................................48
7.4.5 Other accessories .......................................................................................................48
Index .............................................................................................. 49
For return of equipment, complete the HS Forms at the end of this manual.
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