Saginomiya condenser fan speed controller

[CraigF]

Hi all! I've recently been working on a fairly old air Weatherite air handler. The unit has a Saginomiya condenser fan speed controller on the unit. The unit only has two wires connected inside and earth. I cant seem to find any literature on the controller (probs cos its so old!) it is a
L1A4?? Anyone have any idea on how the unit controls speed??

Thanks in advance

Craig

[HVACRsaurus]

Is this similar?

http://www.indubel.com.ar/pdf/biblioteca/danfoss/catalogos/saginomiya/rge-fan-speed-controller.pdf?PHPSESSID=e55c539f5fc83f4f0203a5d630eba717

[CraigF]

That looks like an updated version! This one I have is well old:), im gathering that this just regulates the voltage fed to the motor unit?

Cheers!

[monkey spanners]

Yeah it aims to keep a reasonably constant head pressure by speeding up or slowing down the fan. Much better than the alco ones imo!

[goshen]

Hi
hope this is usefull
http://www.danfoss.com/Products/Categories/Group/ra/Electronic-Controls/Electronic-Controls-Speed-control-of-Compressors-Condensers-and-Fans/RGEXGE-Fan-Speed-Controllers/83698745-650e-4592-8598-77a5517f8736.html
http://www.google.co.il/url?sa=t&rct=j&q=fan+speed+controllers+rge&source=web&cd=8&ved=0CF0QFjAH&url=http%3A%2F%2Fwww.airefrig.com.au%2Ffile%2Fprice_guide%2F2012_mar%2F370.pdf&ei=Ts_VUdXkKILAhAehuYGAAg&usg=AFQjCNGch50_SQ2pwY3NvM1BFrqdSJ6NeQ
http://www.google.co.il/url?sa=t&rct=j&q=fan+speed+controllers+rge&source=web&cd=5&ved=0CEUQFjAE&url=http%3A%2F%2Fthermofrostcryo.co.uk%2Fdownloads%2Frefrigeration%2Fcontrols%2FRGE%2520Fan%2520Spee d%2520Controller%2520(PLRCA.PB.LA0.A2.02).pdf&ei=7M_VUYmkLITKhAeltIDIDA&usg=AFQjCNFENan1D5PQwZsPggUvYAwUkgXSNg
good luck