help with a capacitor for a rollermatic washer please

[tolivac]

Yes-the place where I work has eight piston compressors.A place where I used to work has 4 60Hp screw compressors for gen building air.Had to help the building engineer replace the unloader relay on one of them.The unloader didn't work-so the compressor tripped the breaker whenever it tried to start.On the screw compressor The unloader was a flap valve that covered the air inlet controlled by a time delay relay.Was a Quincy brand unit.There is a screw compressor at the other transmitter site-but no one wants to go get it.The compressors here work fine.Since the ones at our site run from 3 phase motors-no start caps either.Just a pressure switch controlling a 3 phase contactor.1Hp,5Hp,and 10 hp motors.For really high pressure work piston units are still used-Air Products has some really huge reciprocating compressors in their Seat Pleasent,Md plant near Wash DC.for 2000 and 4000 PSI air tanks.Scuba tanks and fire dept tanks.

 

[tolivac]

Screw and other rotary type compressors are fine-the piston-recip ones are less expensive.One of the riggers here used to work for Ingersoll Rand-he didn't like the screw compressors-he liked the recip ones better.Each has advantages and disavantages.Beleive on the "Pumpkin Chunkin" sites they liked the large deisel powered recip compressors that could go up to 600PSI for the pumpkin chunkin-air cannons that fire pumpkins-they even shoot them thru old TV sets and cars!