Purenex Multipure Aqua RO System - Manual (Page 11)

Step 33 Insert the other end of the clear tube to the 1/4” tee connection at the
tank. The tubing must be fully inserted into the tee. The 1/4” tubing
should be inserted about 5/8”. Push the tubing through the small hole
in the tee until you feel resistance. At this point, the tubing is not fully
inserted. Then push firmly until the tubing is inserted as ffar as it will
go.
MP750SI Installation - Connecting to the Tank
Step 34 Drape the green tube connected to the adapta-valve (previously
installed - see page 6 & 10) over to the "IN" side of the RO Pre-
Filter module, leaving a gentle curve in the tubing. DO NOT
SHORTEN THE GREEN TUBE. You will need the full length of the
green tube for flushing the MP750SI Final Filter for future filter
changes.
Step 35 Insert the green tube into the 1/4” connector on the “IN” side of
the RO Pre-filter module. The tubing must be fully inserted in the
connector. The 1/4” tubing should be inserted about 5/8”. Push
the tubing through the small hole in the connector until you feel
resistance. At this point, the tubing is not fully inserted. Then push
firmly until the tubing is inserted as far as it will go.
Flush the RO Module Pre-Filters
Step 36 Insert remaining clear tubing into ¼" connector on "OUT" side of the RO Pre-Filter module.
Drape the other end of the clear tubing up to the sink drain, or to a large bucket.
Step 37 To flush the RO pre-filters, turn on the cold water supply by turning the handle of the valve
counter-clockwise.
Step 38 Allow the water to run through to waste for approximately 5 minutes. Then, Shut off the water
at the valve by turning the handle clockwise until it stops.
Step 39 Disconnect the clear tubing from the "OUT" side port on the RO
Pre-filter module. To disconnect the tubing, first ensure that the
system is depressurized. Then, push in the collet against the face
of the fitting. With the collet held in this position, the tubing can
be removed. The fitting can then be reused.
NOTE: Retain the clear tubing for flushing the RO pre-filters in the future.
Step 40 Attach the green tubing from the automatic shut-off valve (Item #22) to the “out” connec-
tor of the RO Pre-filter module. The tubing must be fully inserted in the connector. The 1/4”
tubing should be inserted about 5/8”. Push the tubing through the small hole in the connector
until you feel resistance. At this point, the tubing is not fully inserted. Then push firmly until
the tubing is inserted as far as it will go.
Green Tube Connection
11
IN Connector
OUTConnector