On 2016-02-23, Bucephalus wrote:

I have an ENCO 110-1340 wired 3-phase. The power switch or breaker has
developed a problem. Push the on switch and the motor runs, but as soon
as you let off, the motor stops and won't stay running as it used to.
Any ideas? Thanks

Looking at the two images, the only switch there is the panic
stop switch with the red mushroom handle. Normally, those are designed
to lock pushed (stop state) and have to be either turned a bit clockwise
to unlock, or pulled, depending on who made the switch. The two red
wires with white terminal lugs look as though they should go to the
start switch. One looks as though it has the number '4' on to, while
the other is too out of focus to read any number, but since the
panic/stop switch wires seem to be number '1' and '2' this makes sense.

The panic switch should be NC (normally closed -- that is when
the switch is in the reset (not depressed) position, the two contacts
will measure very low resistance between them. The "Start" or "Run"
switch, however, will be NO (Normally Open) -- that is it has to be
pressed to connect the two terminals.

Is it possible that you (or someone else) substituted the panic
switch for the "Run" switch?? And where is the other switch? I see
what looks like the mounting hardware for it above the hole where it
goes.

Do you have a manual for the machine which includes a schematic
of the wiring?

Good Luck,
DoN.

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