Hey Nora,
Thanks for taking the time to leave us a review on this product. The bangers for this rig are actually attached to the body of the rig itself. An easy way to keep that piece clean is by running hot or warm water through it which helps break up any residue. Then, to clean I'd recommend just swishing some isopropyl alcohol around and then finish it off by rinsing with warm water.
I'd also recommend using room temperature water as cold water in the rig will help solidify the vapor into reclaim really quickly. If you have any other questions or concerns, please don't hesitate to ask.