Bruker BMPC/2, Technical Manual

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81 Z31823_00_05
Troubleshooting
Figure 11.4 Pump Tray Locking Mechanism
9. Pull the pump forward on the pump tray. The tray can not be pulled out all the way,
this is a safety measure which prevents it from falling out.
10. Exchange the defective pump with a new one.
i
Check to make sure the new pump is ready for use before mounting it. This includes
checking and refilling the oil level as required in the vacuum pump manual.
11. Push the pump tray back to its original position and reconnect the locking mecha-
nism.
12. Mount both of the small flange screws including the seals on the new pump. Pro-
ceed carefully, the connections need to be completely sealed!
13. Plug in the mains cable on the pump and turn on the pump switch (beside the mains
connection).
14. Test the new pump by turning the pump on manually (P1 or P2 On).
15. Test the new pump by comparing the pressure P1 and helium flow Fl values estab-
lished by the new pump with the values of the old pump. These values should be
nearly identical. It is possible you will need to wait one hour until the temperature of
the pump has settled before the values stabilize.
16. Mount and close the front cover.
17. Place the BMPC/2 in Automatic Pump mode and in Monitor & Alarm mode.
Loosen the screws
and move the
locking-mechanism