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special wrench.
3) Cut the included 3/8 inch tubing into two appropriate length tubing for
water inlet and outlet connections.
4) Connect one PE tubing from 3-way ball valve on the tap water outlet to
the water inlet on the Pack (Refer to Illustration above). Connect the
other PE tubing to the water outlet of the Prefiltration pack.
5) Put the outlet tubing into a sink. Turn on tap water and let it run for a
few minutes to clean up impurities which might exist in the pack.
6) Block the water outlet with your finger during the process to check
whether the assembly leaks.
7) Turn off the tap water. Connect the outlet PE tubing to the inlet of the
water system to complete the installation.