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Mains Pump Driver with opto-triac driver.

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eem2am

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Hello,

This is a schematic for a Mains pump motor driver.

https://i54.tinypic.com/zyeiw7.jpg

Do you believe that the "H/L" input is for selecting wither UK or USA mains? (i.e. 120VAC or 240VAC?)

MOC3063 DATASHEET:
https://www.fairchildsemi.com/ds/MO/MOC3063-M.pdf

Also, MOC3063 is a zero-crossing opto-triac driver, surely this is unsuitable for IC2?

.....because surely that opto-triac driver (IC2) should just be either ON or OFF all the time, depending on whether its 120VAC or 240VAC?
 

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