Beko 5120s motor changed now not working?

My beko kept shorting out the electrics in my house, I disconnected everything in it and one by connected everything back up. When the motor was reconnected the machine tripped out the electrics again so I ordered a new motor and fitted it. Now the machine starts, fills up with water then spins for a couple of seconds, bangs and then drains and turns off. I have tried a few programs with the machine empty and with items in and still the same. Any ideas? Did I need to do something to the motor before fitting it or have I got another problem or need to reset it and if so how?