Thanks Steve,
I was researching a bit myself also as it struck me odd that a polarised cap would be used on an AC circuit.
Heres the cct on the far right..." Up down flight motor"



The 0.37uf is a polypropolene cap .
Don't really understand this little cct.. im wondering if using electrolytics like this puts a reverse bias across the motor so only one side of the motors windings is active at any given time?