WaterGroup E75TFC-3, Installation, Operation And Service Manual

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10
Maintenance Schedule
This schedule is designed for the average potable water supply and should be followed to ensure the
proper functioning of your drinking water system.
Pre-Filter
- The pre-filter contains a 5 micron mechanical filter element. Its function is to remove
suspended particles from the feed water, thus reducing the possibility of clogging the reverse osmosis
membrane. The pre-filter element should be replaced every twelve months or earlier depending on the
quality of the feed water.
Pre-Carbon Filter
-The pre-filter contains a granular activated carbon. Its function is to remove
chlorine from the incoming water to prevent any damage to the TFC membrane. The Pre-Carbon filter
cartridge should be replaced every 24 months.
Combination Five Micron Pre-Filter and Carbon Filter
- Removes tiny particles of
suspended dirt, sediment and organics, while protecting TFC membrane from chlorine. This filter should
be replaced every 12 months.
Reverse Osmosis Module
- The reverse osmosis module contains a semi-permeable membrane.
Its function is to separate water molecules from dissolved impurities in the feed water. This is
accomplished by application of hydraulic pressure greater than the osmotic pressure in water containing
dissolved solids. The life of the membrane can be determined by measuring the percentage of rejection of
total dissolved solids in the water. The membrane should be replaced every 24 to 36 months when its
efficiency will decrease.
Post-Carbon Filter
- The post-filter contains a granular activated carbon. Its function is to remove any
taste and odor from the water prior to delivering it to the spigot. The post-filter cartridge should be replaced
every 24 months.
Changing Filters
Important: This RO System contains filters, which
must be replaced at regular intervals to maintain
proper performance. See Maintenance Schedule for
the recommended interval for changing the filters.
Local conditions may dictate more frequent cartridge
replacement. Use a drip pan to catch any water that
may spill when the housings are removed. Use only
factory approved filters.
1. Close the saddle valve by turning fully clockwise
and open the faucet by lifting the handle. Allow
storage tank to empty.
2. Loosen and remove the appropriate filter
housing(s). Discard the cartridge(s).
3. Wash the inside of the housings using a mild detergent and a soft cloth. Do not use abrasive cleaners
or pads. Thoroughly rinse all soap from the housing before re-assembly.
Figure 11 - Using sump wrench to change
filter cartridges