All four turbine flow sensors for heads 1-4 were replaced with new ones.  The signals from
all four sensors look okay but the one from head 3 is the noisiest.  Some air bubbles were
seen in the flow sensors but seemingly have worked their way out of the sensors by the time
the oscillator lid was put back.

    Going by the froth in the crystal chiller spout, we might still have some air bubbles
in the system.

    A large metal, copper coloured chip came out of the head 1 flow sensor.  The chip was
approximately 2 mm x 2 mm.

    The vortex flow sensors for the power meter and front end laser were re-attached and
released in Beckhoff - they were previously force written.  If problems come up again, we
can force write them again.

    The bypass valve is fully open.



Jason / Peter