Edwards Diffstak 63/150 - Page 6

B344-21-880 Issue N
Page ii © Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Contents
5 Maintenance ..................................................................................... 35
5.1 Safety .....................................................................................................................35
5.2 Maintenance plan .......................................................................................................36
5.3 Check the pump fluid-level ...........................................................................................36
5.4 Inspect the pump fluid (and drain if necessary) ...................................................................37
5.5 Inspect and clean the pump ...........................................................................................37
5.5.1 Preparation ..............................................................................................................37
5.5.2 Remove the high-vacuum isolation-valve (M-model pumps) .....................................................37
5.5.3 Remove the high-vacuum isolation-valve (P-model pumps) .....................................................38
5.5.4 Dismantle the pump ....................................................................................................38
5.5.5 Inspect and clean the interior ........................................................................................40
5.5.6 Reassemble the pump ..................................................................................................40
5.6 Clean the radiation shield .............................................................................................42
5.7 Lubricate/inspect the high-vacuum isolation-valve (M- and P-model pumps) ................................43
5.8 Replace the pump heater(s) .......................................................................................... 44
5.8.1 Diffstak 63/150 and 100/300 pumps .................................................................................44
5.8.2 Diffstak 160/700 and 250/2000 pumps ..............................................................................45
5.9 Check the heater securing nuts ......................................................................................46
5.10 Clean the cooling-coil ..................................................................................................46
5.11 Adjust or replace the position indicators ...........................................................................46
5.11.1 Adjust the position indicators ........................................................................................46
5.11.2 Replace the position indicators .......................................................................................46
5.12 Fault finding .............................................................................................................48
6 Storage and disposal ........................................................................... 49
6.1 Storage ...................................................................................................................49
6.2 Disposal ...................................................................................................................49
7 Service, spares and accessories .............................................................. 51
7.1 Introduction .............................................................................................................51
7.2 Service ....................................................................................................................51
7.3 Spares .....................................................................................................................51
7.3.1 Pump fluids ..............................................................................................................51
7.3.2 Spares common to all Diffstak pumps ...............................................................................52
7.3.3 Spares for Diffstak M- and P-model pumps .........................................................................52
7.4 Accessories ...............................................................................................................53
For return of equipment, complete the HS Forms at the end of this manual.