Reports until 11:22, Tuesday 09 May 2023
H1 ISC
marc.pirello@LIGO.ORG - posted 11:22, Tuesday 09 May 2023 - last comment - 13:05, Tuesday 09 May 2023(69438)
Replaced Aging Kepcos

F. Mera, M. Pirello

Per WP11175 & WP11172

Replaced Aging Kepcos with upgraded supplies in H1-VDC-C2 CER Mezanine Power Rack.  Racks affected:

H1-ISC-C3 +/-18V, +/-24V (all RF chassis)

H1-ISC-C2 +/-18V also H1-ISC-C1 uses this +/-18V, now documented. (Signals Chassis)

H1-ISC-C2 Slow Controls +24V  (this is all beckhoff and acromag in ISC-C2 sans Corner 6 and Corner 2)

H1-SQZ-C1 Slow Controls & OMC IO Chassis +24V (Entire squeezer rack in CER)

We also found that Slow Controls Corner 6 & Corner 2 are powered by the IO Chassis ASC, LSC +24V supply, so these two did not go down during the swap.

Keywords: aging ageing

Comments related to this report
fernando.mera@LIGO.ORG - 11:27, Tuesday 09 May 2023 (69439)
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marc.pirello@LIGO.ORG - 13:05, Tuesday 09 May 2023 (69444)
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While at end stations I performed a quick thermal check of the supplies.

EY-Supplies - All fan housings ambient with good air flow.

EX-Supplies - All fan housings ambient with good air flow.