Pinterest Repin Brand Pins Time Delay

How fast should I repin my brand pins through my Pinterest-Network to gain the most of it, without receiving a ban?

I can imagine that Pinterest favors Pins that receive a high amount of repins and likes in a short time, but does anyone know what a natural/good time delay between each repin is?

I have 20 Accounts and I am not sure yet how many tiers would be best. If you have any suggestions please elaborate.

You can repin as fast as you can, just make sure that you repin other accounts pins to make everything look random.

2 minutes delay should be fine.