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Figure 2
2.3
Install RO membrane element in housing (See Figure 2)
The RO membrane element is packed separately because the membrane has been
tested by the manufacturer and sealed in plastic with preservative. Remove the
membrane element from its sealed plastic bag. To install the membrane in the housing
first loosen the inlet fitting nut (the end of the housing with the single fitting) and
remove the tube. Unscrew the membrane housing cap. Notice that one end of the RO
membrane has two "O" rings on it. This end slides in first. Check that the "O" rings
are tight and in their grooves. Lubricate lightly with cooking oil or vaseline. Install the
membrane so the black sealing ring on the membrane is at the open end of the housing.
Press the membrane in and feel the two "O" rings seat in the housing. Make sure
they seat properly on the barrel of the housing, then reinstall the housing end cap and
tighten securely. Reinstall the tubing and fitting and secure fitting nut.
2.4
Connecting the feed water supply (Fig. 3)
The feed water assembly consists of 1/2" brass slip joint adapter, a black washer,
and a 1/4" x 1/4" ball valve. Locate these parts in the installation kit.
Locate the cold water shut off valve under the sink and turn it off. Open the cold
water faucet to release the pressure. On single handled faucets, the hot water may
have to be turned off to prevent any hot water cross-over. If water continues to come
out of the faucet with the under-sink valves turned off, the house main valve will
have to be turned off.
With the water turned off, disconnect the cold water riser tube (flex line) from the
valve. Install the slip joint connector with the black washer. Loosen the nut and
separate the cold riser tube from the faucet shank. Gently bend the riser tube so
that the slip joint adapter fits onto the faucet shank. Reinstall the cold riser tube on
the slip joint connector using the existing cone washer. For Solid copper tube the
procedure is the same except you must cut a piece of the riser tube about 3/4" to 1"
so the slip joint adapter can fit between the valve and the riser tube. Wrap several
turns of teflon tape on the ball valve and install on the slip joint connector.
In some cases the Pure Water Machine is supplied with a saddle Valve which can
clamp over a copper pipe and make the hole and seal at once. (See figure 4).
MEMBRANE INSTALLATION
RO Membrane Element
– 4 –
"O" Ring Seals
Membrane Housing
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