Step 4. Tubing Connection
Install the tubings onto the inlet and outlet of the system. Follow the quick connect instruction to
properly connect the system.
Note: Make sure that water flows in the correct direction from the 1
st
stage to the 4
th
stage.
Step 5. System Start-up
A. Make sure no tubing is kinked. Place a towel under the system to catch any possible water
leaks.
B. Open the drinking water faucet. Slowly turn on the Feed Water Adapter (AFW43) and
check for 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.
C. Rinse the system for 5-15 minutes. It is normal to see residual carbon and fine air bubbles in
the water when flushing the system for the first time.
D. Check for leaks daily for the first two weeks after installation to ensure the system is
functioning properly.
Congratulations, you have successfully installed your
iSpring CU-A4 4-Stage Ultrafiltration Water Purification System!
www.123filter.com | (678) 261-7611 | support@123filter.com Page 6
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