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Maintenance
Change Filters
Your system contains filters which must be replaced
periodically for proper operation. (Please see Page 2 for
general filter change schedule)
NOTE: Filter cartridges may require changing more
frequently depending on the source water conditions.
In each filter head there is an automatic shut-off device
which allows the filters to be changed without having to
turn off the inlet water supply.
To change filters follow the procedures in figure 5 below.
NOTE: Expect a few drops of water when removing the
filter cartridge.
Figure 5. Filter Installation
Change Membrane
Your system contains a reverse osmosis membrane which
should be replaced periodically for proper operation.
(Please see Page 2 for general filter change schedule)
NOTE:
RO Membrane may require changing more
frequently depending on the source water conditions.
To change filters follow the procedures below:
1. Turn off water supply by turning feed water saddle
valve clockwise until valve is fully closed.
2. Turn storage tank valve clockwise to close.
3. Open faucet to relieve pressure.
4. Remove quick connect fittings from RO Membrane.
5. Re-connect RO Membrane.
6. Turn water supply back on.
7. Turn storage tank valve to open position.
8. Empty storage tank. Produce an additional full tank of
water and discard it. Normal operation can resume.
Figure 6. RO Membrane
Water Pressure and Temperature
Product water quality and production of RO systems is
dependent on pressure and temperature. Typically, RO
membranes are rated at standard conditions of 77F (25 C)
and 60 psi (4 bar) discharging to atmosphere. In general,
the higher the pressure differential and temperature,
increased quality and quantity of water is produced. These
factors should be considered when sizing RO systems for a
particular application.
Quick Connect Fittings
The 475 PRO Series system utilizes quick-connect fittings.
Proper use of these push-in fittings is shown below. Along
with these fittings, all tubing selected must be of high
quality and must be cut with a plastic tube cutter or sharp
razor with a clean, square cut.
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 ¼`` 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 of ¼`` from the end of the tubing using these fittings.
Cut the tube square and remove
burrs and sharp edges. Ensure
that the outside diameter is free
from score marks. For soft or
thin walled plastic tubing we
recommend the use of a tube
insert.
Push the tube into the fitting and
up to the tube stop.
Pull on the tube to check that it
is secure. Test the system
before use.
To disconnect, ensure that the
system is
depressurized, push
the collet square against the
fitting. With the collet held in this
position
the
tube
removed.
can
be
5
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