Intermatic Pool Timer Wiring

[PoolDoc]

The timer should not toggle without trippers in place. If it's doing so, the timer mechanism must be bad. The silver handle, just above the white wire in the photo, is the manual trip. Try toggling it back and forth -- it should turn the pump on, and then off, but should not be loose or floppy.

If necessary, you should be able to take this model:

Intermatic-T104-208-277-Volt-Mechanical-Switch

and swap the guts out, without having to rewire the box.

If you want a whole new timer, you'll need one like this, with an outdoor case:

INTERMATIC-T104P3-TIMER-INDOOR-OUTDOOR