Watts PWROKCZRO - Manual (Page 8)

8
Membrane Replacement
This reverse osmosis system contains a replaceable component (the
RO membrane) which is critical to the efficiency of the system.
Replacement of this reverse osmosis membrane should be with one
of identical specifications as defined by Watts to assure the same
efficiency and contaminant reduction performance.
Membranes have a life expectancy between 2 and 5 years, de-
pending on the incoming water conditions and the amount the
RO system is used . This reverse osmosis membrane is critical for
effective reduction of total dissolved solids (TDS) . The product water
should be tested periodically to verify that the system is performing
satisfactorily .
Normally, a membrane would be replaced during a semiannual or
annual filter change . However, if at any time you notice a reduction
in water production or an unpleasant taste in the reverse osmosis
water, it could be time to replace the membrane . Watts recommends
replacing the membrane when TDS reduction falls below 75% .
Note: A water sample may be sent to Watts for a free diagno-
sis of your membrane performance. To send a water sample,
use two (2) clean containers and fill ½ cup of tap water in one
container and ½ cup of reverse osmosis water in 2nd container.
Clearly label each sample. Send the samples to the address
listed on the cover of this manual attention “Water Samples”.
Watts will test the water and mail or call you with the results.
See annual maintenance on Page 7.
Step A – To change your membrane follow the instructions for the
Annual Maintenance (previous section) . The procedure to
remove and change the membrane cartridge is the same
as all the other filter cartridges on the RO module .
Step B – Check over the next 24 hours to ensure no leaks
are present .
Replacement Filter Packs
Model Frequency description
PWKCCB13 6 months Carbon Block
PWFPKKCZW Annual Membrane and filters
PWKCGAC13 Annual GAC filter
PWMEMKC60 2-5 years 60 GPD membrane