ทรายกรอง 0.4 - 0.8 มม 25 กก

Using

New filters:

• Use the spreader if one was supplied with your new filter.
• IMPORTANT: Check the laterals are firmly  attached to  the centre pipe unit
• IMPORTANT: Fill  the filter half full  with  water
• Do not allow any media to enter the centre pipe - cover it with a plastic cup.
• Ensure an even spread all round.
• Thoroughly clean the O-ring grooves before assembling  the MPV or attaching the side mount unit.

Existing filters

• If you  are refilling an existing filter, be sure to replace the O-rings for the top-mount  MPV or the port  flanges on side-mount  filters. Order them from from us before you start.
• Remove the MPV (top-mount) or the plumbing (side-mount)
• Allow the filter unit to drain overnight - wet sand is is very heavy
• Check the latertals for possible damage
• Fill the filter half full with  water
• Do not allow any media to enter the centre pipe - cover it with a plastic cup.
• Ensure an even spread all round.
• Remove any excess sand and carefully clean the O-ring grooves.
• backwash and rinse several  times