[QuadList] Restoring an Ampex AVR-1

[Dave Sieg]

John:
Are you certain your building is wired for 208v 3 phase?  Unless it is a
very large industrial type building most are only wired with 240v two
phases.  You would have to take the front panel off your breaker panel to
see if there are three feeder buses or just two.  I have seen people who
don't understand the distinction wire the three "hot" pins of a 3-phase
connector to three adjacent breakers in a 240v two-phase panel which means
that two of the phases are essentially shorted together.  This might be part
of your problem. Another way to tell would be to use a voltmeter to confirm
that you have 208 volts between any two of the three "hot" contacts of the
power socket.  (You probably have an L21-30 connector, See
http://en.wikipedia.org/wiki/Industrial_and_multiphase_power_plugs_and_sockets#NEMA_10-20.2C_10-30_and_10-50
 The
"hot" contacts are the outer three that do NOT have an L-shape)  I am not
familiar enough with the AVR-1 to know if there are tapping options to
change it over to 240v but the manuals should say.Dave

On Mon, Jul 6, 2009 at 9:08 AM, John Walko <jwalko at scenesavers.com> wrote:

>  Park:
>
> We sort of gave up on the AVR-1.  It is simply a time issue…we would really
> like to get it working, but don’t have the time to spend on it right now.
> Maybe some time in the future.
>
> The machine was working when it was taken out of service.  It has been
> sitting without power for probably the last 5-6 years.  It appears as if the
> machine was originally wired for a 208-three phase volt power supply, and
> that is the way it is currently wired.
>
-- 
Dave Sieg
http://www.davesieg.com
http://www.scanimate.net
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