Hcw3
Member
3M AquaPure rinse line 'runs'
I have a 3M Cuno Aquapure CBF100 carbon backwash filter that has started to continually run a small amount of water from the rinse line.
The instruction book says that this indicates a damaged piston seal assembly. The system is six months old, and it's my guess that it has carbon granules lodged in there, from when air blasted through the line. (link to manual: http://www.3mwater.com/media/catalog/product/pdfs/3MCBF_Manual.pdf )
Carbon granules appeared in the rinse line, after my plumber drained and refilled the system to do some repairs.
My queston is, how to pull the 'Drive Cap Assembly' in order to get at the piston and seal assembly.
I've removed the circuit board assembly, and have been able to unlock the back plate and turn it, but that doesn't seem to release the drive cap assembly at all.
The manual shows a picture where the drive cap seems to be threaded, but I can't budge it by hand. Is there a special wrench for this? (Is it right-hand or left-hand threads?)
The diagram is on the 19th page of the manual (linked above) or page 6-2.
Thanks for any help...
I have a 3M Cuno Aquapure CBF100 carbon backwash filter that has started to continually run a small amount of water from the rinse line.
The instruction book says that this indicates a damaged piston seal assembly. The system is six months old, and it's my guess that it has carbon granules lodged in there, from when air blasted through the line. (link to manual: http://www.3mwater.com/media/catalog/product/pdfs/3MCBF_Manual.pdf )
Carbon granules appeared in the rinse line, after my plumber drained and refilled the system to do some repairs.
My queston is, how to pull the 'Drive Cap Assembly' in order to get at the piston and seal assembly.
I've removed the circuit board assembly, and have been able to unlock the back plate and turn it, but that doesn't seem to release the drive cap assembly at all.
The manual shows a picture where the drive cap seems to be threaded, but I can't budge it by hand. Is there a special wrench for this? (Is it right-hand or left-hand threads?)
The diagram is on the 19th page of the manual (linked above) or page 6-2.
Thanks for any help...
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