
© Edwards Limited 2008. All rights reserved. Page i
Edwards and the Edwards logo are trademarks of Edwards Limited.
Contents
B348-00-880 Issue J
Contents
Section Page
1 Introduction .......................................................................................1
1.1 Scope and definitions ................................................................................................... 1
1.2 Description ................................................................................................................ 2
1.3 Construction .............................................................................................................. 2
1.4 Principle of operation ................................................................................................... 4
2 Technical data ....................................................................................5
2.1 Performance .............................................................................................................. 5
2.2 Mechanical data .......................................................................................................... 5
2.3 Pump fluid data .......................................................................................................... 6
2.4 Cooling-water data ...................................................................................................... 6
2.5 Compressed air data (P-model pumps only) ......................................................................... 6
2.6 Electrical data ............................................................................................................ 6
2.7 Construction materials .................................................................................................. 7
3 Installation ....................................................................................... 11
3.1 Safety .....................................................................................................................11
3.2 Unpack and Inspect .....................................................................................................11
3.3 Locate the pump ........................................................................................................11
3.4 Vacuum connections ...................................................................................................12
3.4.1 Introduction .............................................................................................................12
3.4.2 Diffstak inlet .............................................................................................................12
3.4.3 Backing and roughing connections ...................................................................................16
3.5 Cooling-water connections ............................................................................................17
3.6 Electrical connections ..................................................................................................17
3.6.1 Connect the electrical supply to the pump .........................................................................17
3.6.2 Connect the cooling-fail thermal snap-switch (optional) .........................................................18
3.6.3 Connect the pump-ready thermal snap-switch (optional) ........................................................19
3.6.4 Connect the high-vacuum isolation-valve position indicators
(CR63/150P and CR100/300P pumps only) ..........................................................................20
3.6.5 Connect the high-vacuum isolation-valve position indicators
(CR160/700P and CR250/2000P pumps only) .......................................................................20
3.7 Connect the compressed-air supplies (P-model pumps only) ....................................................21
3.8 Leak-test the system ...................................................................................................21
3.9 Fill the pump with fluid ................................................................................................22
3.9.1 Safety of vapour pump fluids .........................................................................................22
3.9.2 Recommended pump fluids ...........................................................................................23
3.9.3 Filling procedure ........................................................................................................23
3.10 Prepare the liquid nitrogen reservoir ................................................................................23
4 Operation ........................................................................................ 25
4.1 Introduction .............................................................................................................25
4.2 Pump start-up ...........................................................................................................25
4.3 Fill or refill the liquid nitrogen reservoir ...........................................................................28
4.4 Re-admission of air to your vacuum system ........................................................................28
4.5 Re-evacuation of your vacuum system ..............................................................................28
4.6 Pump shut-down ........................................................................................................29
4.7 Empty the liquid nitrogen reservoir ..................................................................................29
5 Maintenance ..................................................................................... 31
Ipsitech 9001(27)-2008