Hi Corby, How's it wired now? Basically it should be two windings in series, say line to 1, 2 linked to 3 and neutral to 4. To set to 120V leave line and neutral were they are and link 2 to 4 and 3 to 1. As a double check for phasing when you lift the link between 2 and 3 check for winding resistance between 1 and 2 and separately 3 and 4. They should benear identical resistance values. Change tag numbers to suit your original wiring.
HTH, Robert G8RPI. ________________________________ From: "[email protected]" <[email protected]> To: [email protected] Sent: Thursday, 19 September 2013, 20:43 Subject: [time-nuts] Varian 921-0062 ion pump supply question Hi, I'm working on a Varian 921-0062 ion pump controller for the pumps used in a Maser. I just got it in and it is wired for 240 VAC and I want 120VAC. My manual and the ones I can find on line show a power TX with 4 input terminals which they show how to strap for 240 or 120 VAC. My unit has TX has 6 terminals 1/2/3/4/8/9. Does anyone know how to wire this TX for 120 VAC? Thanks, Corby Dawson _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
