123Filter iSpring Reverse Osmosis Water Filtration Installation Instructions & Owner's Manual page 16

Step 8: System Start Up (model specific sub­steps are marked with a * )
* If your model has a UV stage, do not plug in the power until the system has been fully flushed *
8.1 Make sure no tubings are kinked. ​ T urn the Tank Shut­off Valve OFF (perpendicular to the
yellow tube).​ Place a towel under the system to catch any possible water leaks.
8.2 To prevent any residual carbon from the carbon pre filters from getting into the RO membrane,
you previously left the tubing to the inlet of the RO membrane housing cap disconnected. Open
the Feed Water Adapter Valve (AFW) and Cold Water Supply Valve (CWSV), and flush the
first three stages into a bucket until the water turns clear.
8.3 Once the water is clear, shut off the AFW and re­connect the tubing to the RO membrane
housing cap. You will want to flush the system like this whenever the first three stages are
changed.
8.4 Open the RO faucet. Slowly open the AFW back up and ​ c heck for any leaks​ . The ​ t op 3 causes
of leaks​ are ​ 1 ​ ) The tubing is not fully inserted into the quick­connect fitting.​ 2​ ) The O­ring is
not in the correct place or is kinked.​ 3​ ) The Housing/Cap is not tightened properly or
misaligned with the threads.
8.5 *​ After confirming that there are no leaks, plug in the booster pump power supply if your
model has a booster pump.
8.6 Within 5 minutes, RO water will start slowly trickling from the faucet. Let the faucet trickle for
at least 15 minutes to flush out the entire system apart from the tank. The water may appear
black due to loose carbon from new carbon filters. It will eventually turn clear apart from many
tiny air bubbles leaving the system.
8.7 Shut off the RO Drinking Faucet. Turn on the Tank Shut­off Valve. Wait for the tank to fill up
completely. It will take 1.5 to 2.5 hours depending on your water temperature (40F­100F, the
warmer the faster), water TDS (up to 750, the lower the faster), and incoming water psi (35 ­
80, the higher the faster).
8.8 After the tank is full, open the RO Drinking Faucet to drain the tank completely. Do not use the
first tank of water. Let it drain into the sink until the stream turns back to a trickle ­ this means
the tank has emptied and you can close the RO faucet to let it begin filling again.
8.9 *​ If your system has a UV filter, plug in the UV power and check to make sure the UV light is
turning on when water flows through it. The UV filter has a Flow Sensor Switch that detects
water flow and only turns the light on when needed.
8.10 The TDS (total dissolved solids) of the water should be tested periodically to verify that the
system is performing properly. iSpring RO systems have earned ​ W QA GOLD SEAL​ by
exceeding NSF/ANSI standard 58 and should be giving a 90%+ TDS rejection rate, so if your
tap water is 100ppm you should be getting 10ppm or less from the RO water (200/20>,
400/40> etc.). TDS is measured with a TDS meter ­ it is an inexpensive, easy to use device that
can be found on Amazon.com or 123filter.com by searching "TDS3".
8.11 Check for leaks daily for the first two weeks after installation to ensure the system is
functioning properly. Install the included Flood Alarm to provide additional peace of mind and
protection.
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