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Event details

Voyage: IN2019_E01       [details]
Subject: Condenser temperature not reaching setpoint
When: 2019-07-28 02:16:23 UTC

- entered into Elog/Everlog as 2019-07-28 02:16:23
Log: in2019_e01_Atmospherics
Equipment: SMPS

nano Scanning Mobility Particle Sizer (Grimm) [view]
Position: Latitude: -9.95383 Longitude: 135.435

- entered into Elog as 9 57.23 S, 135 26.1 E
Action: Fault

Butanol ran out (error 40) overnight. I refiled it and the signal came back good but error 32 is persisting (temperatures not reaching setpoint).

I tried restarting the software and running the warmup, but the condenser temperature is not reaching the setpoint (10oC), and only making it to 14oC.

I power cycled the instrument, leaving it off for about 30 minutes, then unplugging it from mains power for about 1 minute, before restarting (without the software).

Checked about 45 min later, and the condenser temperature is down to 11.8oC. Leaving it for a while longer to see if it gets down to temperature.

Left another 45 min, temperature hasn& 39;t gone any further down.

Took cover off to inspect plumbing, nothing suspicious, but the air conditioner is blowing directly on the instrument - maybe the heater dump for the temperature isn& 39;t able to work against the 21oC AC. I& 39;ve readjusted the AC flow direction flaps to point directly out, rather than down as they were.

No change after 15 minutes.

It could be related to the humidity or some dodgy butanol - I& 39;ve connected the diffusion drier to the inlet (still sampling lab air) to test the humidity effect. No change.

Leaving overnight to see if the wick wetting is the issue (removed the diffusion drier).

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