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turbo_pump_procedure

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turbo_pump_procedure [2018/11/15 16:28] – created jrsetiturbo_pump_procedure [2023/10/28 18:36] (current) – external edit 127.0.0.1
Line 21: Line 21:
   ant2j  65.0   ant2j  65.0
      
-It now seems 2j is back in action!+It now seems 2j is back in action! These are the notes from Rob.
  
   You should check some set-up values.   You should check some set-up values.
Line 38: Line 38:
   p708                          070   p708                          070
   getfanpwm               100   getfanpwm               100
- +   
-  If the values are correct (or even if you have to change them), one trick to help the vacuum recover is to just  +  If the values are correct (or even if you have to change them), one trick to help  
-  run the roughing pump on high over night or a few hours. +  the vacuum recover is to just run the roughing pump on high over night or a few hours. 
 +  
             24v & 48v ON.             24v & 48v ON.
             Shutdown the Cryo SET SSTOP=0             Shutdown the Cryo SET SSTOP=0
Line 48: Line 48:
             Roughing pump                   p035=007             Roughing pump                   p035=007
      
-   +  Vacuum restart after high speed roughing.
      
-  Vacuum restart after high speed roughing. 
- 
             p035=003             p035=003
             p024=000             p024=000
Line 57: Line 55:
             p010=000             p010=000
             p010=1             p010=1
- +   
-  The Turbo will restart & go through it normal run-time, if we got enough garbage out with the rougher it should be OK. +  The Turbo will restart & go through it normal run-time, if we got enough garbage  
- +  out with the rougher it should be OK. 
-  The normal start-up is to try to reach 90k rpms for about 20min, if it doesn’t make it the Turbo shuts down & waits 40min & try’s again. +   
 +  The normal start-up is to try to reach 90k rpms for about 20min, if it doesn’t  
 +  make it the Turbo shuts down & waits 40min & try’s again. 
 +  
   After several attempt the Vacuum system will give up, “run-time error”.   After several attempt the Vacuum system will give up, “run-time error”.
- +   
-  If there is a vacuum leak we will never get to 90k rpms, if the Turbo stalls out at 15 or20K rpms, that an indicator that there is a leak. +  If there is a vacuum leak we will never get to 90k rpms, if the Turbo stalls out  
 +  at 15 or20K rpms, that an indicator that there is a leak. 
 +  
   Turbos stalling out at 30 to 50 or 60k rpms can with the about help get to 90k.   Turbos stalling out at 30 to 50 or 60k rpms can with the about help get to 90k.
  
  
turbo_pump_procedure.1542299288.txt.gz · Last modified: 2023/10/28 18:36 (external edit)

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