Logbooks Lab Maintenance Evaporator_1 Evaporator_2 Laser cutter Target Production Test-Stand RH-ISAC RH-Cyclotron RH-Meson Hall RH-Beamlines RH-ARIEL
  Test-Stand  Not logged in ELOG logo
 List 
Message ID: 181     Entry time: Thursday, August 23, 2012, 11:59
Author: Anders Mjos 
Target/No.#:  
Source:  
Station:  
Module:  
Target Oven W.O#:  
Heat Shield W.O#:  
Status: Problems/Solutions 
Subject: Roughing blows the fuse for both roughing pumps. 

The fuse for both roughing pumps blows when roughing the chamber. With the help from Edi: disconnect the exhaust port on the roughing pump for the first few hundred torrs of roughing. Reconnect and continue.

Seems the roughing pump RP1  pushes air towards the exhaust of RP2 which blows the fuse

ELOG V2.9.2-2455