bedding di sini bermakna menaruh, meletakkan, menanam, sehingga re-bedding berarti melakukan ulang hal-hal itu.

√ Namun, di dalam konteks penjernihan air, yang dimaksud adalah mengeluarkan bahan penyaring -- yang umumnya karbon, kadang ditambah dengan kerikil -- dan memasang yang baru, atau gampangnya: mengganti bahan [karbon] penyaring.

★Pada surjaya ke-1, dengan sistem yang lain, tersirat bahwa servis terhadap distributor hanya bisa dilakukan berbarengan dengan re-bedding. Ini berarti sistem di dalam pertanyaan mempunyai keunggulan: untuk menyervis distributor, tidak perlu lagi melakukan hal itu,

SURJAYA ★★★★★
http://www.doityourself.com/forum/water-softeners-air-filtra...
Use a hose to help flush out the old carbon. There may be some gravel in the bottom. If there is, buy some to replace it. When you buy the carbon, ask for a funnel. You may also want to replace the distributor tube. When rebedding the unit, tape off the top of the distributor tube so nothing get inside, place in tank, and rebed the unit.

http://ecowaterfl.wordpress.com/tag/carbon-tank-maintenance/
Simply put Carbon Rebedding is a process for replacement and replenishment of the carbon in your filtration system so it can again filter out contaminants in your water. The process is quite simply more expensive that changing a filter regularly, but sometimes it’s the only option. Carbon rebedding requires an evaluation of the capability and efficacy of the existing carbon you have, and what steps need to be taken to make it filter at its maximum level again.