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Reports until 18:35, Wednesday 28 February 2018
LHO VE
chandra.romel@LIGO.ORG - posted 18:35, Wednesday 28 February 2018 (40779)
CP4 bake commissioning

Completed final tests on bake enclosure heater today with contractor. We have four thermocouple readouts which all act as over-heat protection along with temperature read back. If temperature rises above set point plus up to 20 degC (user defined) then the heater trips off.

We secured four type T thermocouples in the enclosure (one touches a metal flange at bottom of CP4 and the other three float in air), plus one type K that floats in air and is connected to CDS at TE202A - formerly CP3 exhaust temp read out - for remote monitoring and alarm messaging. It currently reads 29degC, which is higher than the other four reading around 21degC.

We found a spill from the turbo's portable chiller this morning. The flex hose had slipped off a barbed connection, so Kyle replace with metal hose and threaded fittings. The fluid is DI water,  mixed with some residual anti-corrosion slime.

We will set or adjust text/email alarms for the following channels: 

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