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40m
QIL
Cryo_Lab
CTN
SUS_Lab
TCS_Lab
OMC_Lab
CRIME_Lab
FEA
ENG_Labs
OptContFac
Mariner
WBEEShop
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| 40m Log |
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 Wed Apr 21 19:28:03 2021, Anchal, Update, PSL, PSL/IFO recovery
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 Wed Apr 21 19:43:20 2021, Koji, Update, PSL, New HEPA speed control 
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Thu Apr 22 14:41:55 2021, Chub, Update, PSL, New HEPA speed control
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Fri Apr 23 18:00:02 2021, gautam, Update, PSL, HEPA speed lowered
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Fri Apr 23 19:26:58 2021, Koji, Update, PSL, HEPA speed lowered
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Fri May 14 17:45:05 2021, rana, Update, PSL, HEPA speed raised
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Tue May 18 00:52:38 2021, rana, Update, PSL, HEPA speed raised
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Tue May 18 20:26:11 2021, rana, Update, PSL, HEPA speed raised
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Thu Apr 22 15:15:26 2021, gautam, Update, PSL, PMC transmission
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Thu Apr 22 15:34:54 2021, Anchal, Update, PSL, PMC transmission
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Message ID: 16074
Entry time: Thu Apr 22 14:41:55 2021
In reply to: 16069
Reply to this: 16082
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| Author: |
Chub |
| Type: |
Update |
| Category: |
PSL |
| Subject: |
New HEPA speed control |
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When adjusting the blower speed, give the blower at least 30 seconds to speed up or slow down to the set speed. The flywheel effect of the big motor armature and blower mass requires time to follow the control current. Note the taller Flanders HEPA filters. These and the new intake filters should keep the PSL air clean for a long time!
| Quote: |
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The new HEPA speed controllers are attached at the middle of the HEPA unit (not at the edge of the unit)... (Attachment 1)
You still need a step./stool to touch the knob and need a ladder for a more precise setting.
We still don't know the optimal speed of the nominal IFO operation. For now, the HEPAs are running at the max speed (Attachment 2).
Once we know the optimal setting, we mark the knobs so that we can see them only with the step.
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