Owner Manual

disconnected. Open the Feed Water Adapter Valve (AFW43) and Cold Water Supply Valve
(CWSV), and flush the first three stages into a bucket until the water turns clear.
Step 8. c. Once the water is clear, shut off the AFW43 and reconnect the tubing to the RO
membrane housing cap. You will want to flush the first three stages like this whenever they
are changed.
Step 8. d. Open the RO faucet. Slowly open the AFW43 back up and check for any leaks.
The top 3 causes of leaks are 1) The tubing is not fully inserted into the quick-connect
fitting. 2) The O-ring is not in the correct place or is kinked. 3) The Housing/Cap is not
tightened properly or is misaligned with the threads.
Step 8. e. Within 5 minutes, the booster pump will kick on, and 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 at first due to loose carbon from
new carbon filters. It will eventually turn clear apart from many tiny air bubbles leaving the
system.
Step 8. f. Shut off the RO Drinking Faucet. Open the Tank Shut-off Valve. Wait for the tank
to fill up completely. It will take 1 to 2 hours depending on your water temperature (40°F -
100°F, the warmer, the faster) and source water TDS (up to 750 ppm, the lower, the faster).
The pump will shut off automatically when the tank is full.
Step 8. g. 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.
Step 8. h. * If your system has a UV filter, plug in the UV power and check to ensure the UV
light turns 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. If the UV is not turning on
when water flows through, confirm the power source you are using has power. Typically,
the garbage disposal outlet only has power when the disposal is switched on.
Step 8. i. The TDS (total dissolved solids) of the water should be tested periodically to verify
that the system is performing properly. iSpring RO systems have exceeded the minimum
requirements for NSF/ANSI standard 58. They should be giving an average TDS reduction
rate of 90%+, so if your tap water is 100 ppm, you should be getting 10 ppm or less from
the RO water (200/20>, 400/40>, etc This reverse osmosis system contains a replaceable
treatment component critical for the effective reduction of total dissolved solids. That
product water should be tested periodically. 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 "iSpring TDS."
Step 8. j. 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.
Note: Do not use microbiologically unsafe water or unknown quality without adequate disinfection
before or after the system. Systems certified for cyst reduction may be used on disinfected water
that may contain filterable cysts.
Congratulations, you have successfully installed your
iSpring Reverse Osmosis Water Filtration System!
Start enjoying fantastic reverse osmosis water right from your tap!
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