Remove the original top from the DDC pump BY UNSCREWING THE 4 SCREWS ON THE BASE OF THE PUMP, plase the o-ring back onto the pump.

• 将原来的泵盖打开，请小心拧下面的螺钉，别碰坏防水橡胶圈，别忘记把防水橡胶圈放回泵里面去。