Hydrotech Reverse Osmosis Drinking Water System - Manual (Page 15)

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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.
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.
Activating the System
CAUTION: Make sure all water supply lines, drain lines, and fittings are secure and free from leakage.
1. Open source water supply valve. Close product water faucet. Check for leakage.
2. Turn tank valve one-quarter turn counter- clockwise to open valve (handle should be in line with tubing as it enters
connection).
3. Confirm system is producing water. Module will be sending rinse water to drain.
4. Open product water faucet and let water flow until all air has been expelled from system.
5. Close product water faucet. In 30 minutes, check connections for leaks and correct if necessary.
Icemaker/Extra point of use: Check connections on these supply lines for leaks.
6. Allow storage tank to fill overnight.
7. WARNING: DO NOT USE THE FIRST FULL STORAGE TANK OF WATER
Discard (to drain) first full tank of water by opening product water (and extra point-of-use) faucet until water flow
stops, then close faucet. This will flush sanitizing solution from system.
Icemaker: Let tray/bin fill with ice cubes. Discard all ice cubes. This flushes sanitizing solution from lines to icemaker.
8. Check the TDS reduction using a TDS Meter.
9. System is ready to use. Should there be any aftertaste or odor to water or ice cubes, repeat Steps 6 and 7.
DO NOT USE THE FIRST STORAGE TANK OF WATER
Allow storage tank to fill overnight. Dispense this water to drain. This process removes factory-installed
sanitizing solution from the entire system and sends it to drain. This process also sanitizes fittings and tubing
used during installation.
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 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