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Bug #3424

Mains water supply interruption

Added by Garrett Curley 10 months ago. Updated 10 months ago.

Status:
Resolved
Priority:
High
Start date:
26/09/2019
Due date:
% Done:

100%

Estimated time:
revision:
r0

Description

The mains water supply was interrupted during the morning (6 am ish).
Primary pump overheated, so shut down.
Rise in backing pressure caused turbo pump driver overload and shut down.
Chamber rose to atm pressure.
Both Baratrons out of range.
10:00am: Primary pump started. OK
1 Torr Baratron OK.
0.1 Torr Baratron could have issue. Switched off just in case.
10:10am; Turbo pump restart attempted. NOT OK. TMS low temp error.

History

#1 Updated by Garrett Curley 10 months ago

  • Status changed from In Progress to Resolved
  • % Done changed from 20 to 100

11am: switched pump controller on/off.
Allowed controller to heat up to ~ 60 °C.
Switched on. Turbo OK.
1:30pm Base pressure = 1.2e-6 mbar
0.1 Baratron = -0.05 mTorr

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