Cant get dosing pump to work

[Ephraim]

I purchased two Aqua Medic SP 3000 Dosing Pumps for dosing 2 part to my system. But i am having trouble getting them to work with a timer. I am trying to use the digital timer from Coralife that has the 8 outlets. The timer initiates the pumping, and then when it turns the pumps off the timer resets the time and timed settings. I have tried this on 3 separate timer bars with the same results. What kind of timer do these pumps need to work with as this is not working out for me.

thanks