US Water Systems Aquapurion 5 Installation And Maintenance Manual page 11

3. Push up to the tube stop
Push the tube into the fitting to the tube stop. The collet
(gripper) has stainless steel teeth which hold the tube
firmly in position while the O-ring provides a permanent
leak proof seal.
4. Pull to check secure
Pull on the tube to check that it is secure. It is a good
practice to test the system prior to leaving the site and/or
before use.
Disconnecting
Push in Collet and remove tube
To disconnect, ensure the system is depressurized before
removing the tube. Push in collet squarely against face of
fitting. With the collet held in this position, the tube can be
removed. The fitting can be re-used.
Should a leak occur at a fitting, the cause is generally defective
tubing. To fix a leak, relieve pressure, release tubing, cut off at
least 1/4" from the end (square cut), reattach the tubing and
confirm the connection is leak free. Each time a new
connection is made, it is advisable to cut off 1/4" from the end
of the tubing using these fittings.
Installation Instructions
Residential Reverse Osmosis Drinking Water System
Page 11