It's in the basement of my house will never go beyond 21¡ãC / 70¡ãF. However I don't really know where the 115V are comming from inside the instument. Is there a transformer or power supply for it? The instrument can be powered with 110V to 240V. Does anyone have the schematic od the instrument?
Hi Marc,
since all these instruments can be switched from 110 to 220 volts, to supply 110 volts to the fan it either has a tap on the secondary or its connected across one of the two halves of the primary.
In any case: a 220 volt fan replacing a 110 volt fan will run at a fraction of noise and power consumption, but the large 120x120x25mm types still deliver a decent airflow. Plentyful sufficient if your unit is running in the basement, except maybe for a power supply operating at the edge of its envelope (but these usually have thermal cutouts).
cheers
Martin
Martin