Horizon Reverse Osmosis Seafari Versatile Series, Owner'S Manual

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Seafari Versatile 450 - 1800
Page 8-6
8
Membrane Element and product water channel. If,
after 12 hours of continual operation, the system still
experiences low production and or high salinity then
contact the factory.
The membrane elements require cleaning from time
to time. Biological growth and salt accumulation
eventually make replacement necessary. The
frequency of required cleaning is dependent on
the rate of production loss and salt rejection loss
caused by normal use. In order to properly assess
performance changes, it is important that daily log
readings be made and referred to for comparison.
When determining the percentage of performance
changes, Feed Water Temp, Feed Water Salinity,
and System Operating Pressure must be taken into
consideration (Refer to Section 12) and compensate
for those variables. After compensations, a 10%
decline in productivity (GPH Flow) and/or a
10% increase in salt passage indicate that the R.O.
Membrane Element requires cleaning.
If Production rate has dropped dramatically since
the last time the system was used, this may be due
to drying out of the R.O. Membrane Element(s) and/
or fouling during storage. If the system has not been
used for several months and the production rate
has dropped dramatically since the last time used,
try operating it for 12 or more continuous hours to
saturate the Product Water Channel within the R.O.
Membrane Element.
If Production rate has dropped dramatically from
one day to another then the reason for production
drop may be due to chemical attack or suspended
solids fouling, which is not likely cleanable.
Chemical attack can be from sewage chemicals
or petroleum products. Suspended solids fouling
usually consists of silt, coral dust, or debris in rivers
or inland waterways, or any other small solid matter.
8.5 R.O. MEMBRANE ELEMENT CLEANING
CAUTIONS AND INFORMATION
The Horizon Seafari R.O. system must be rinsed
with fresh water before beginning any cleaning
procedure. Cleaning of the R.O. Membrane
Element(s) with the HRO CC R.O. Membrane
Element Cleaning Chemical is performed as follows:
(Refer to the diagrams on page J-3 when rinsing and
closed loop cleaning the system.)
The process of rinsing and cleaning the R.O.
Membrane Elements requires 40 to 200 gallons / 151
to 757 liters of fresh non- chlorinated product water.
The amount of fresh water required depends upon
which cleaning chemicals are used and the different
Pre-filtration equipment installed.
Product Water Required For Cleaning of the R.O.
Membrane Element(s):
System with the Standard Pre-filtration only:
Chemical Rinse Clean Recirc.
Rinse
Final Total
water
used
HRO CC-1 10 10 10 10 40
HRO CC-2 --- 10 10 10 70
HRO CC-3 --- 10 10 10 100
If the System Includes Commercial Pre-filtration and
Oil Water Separator:
Chemical Rinse Clean Recirc.
Rinse
Final Total
water
used
HRO CC-1 20 20 20 20 80
HRO CC-2 --- 20 20 20 140
HRO CC-3 --- 20 20 20 200
The cleaning compounds available from HRO are
designed to clean the R.O. membrane elements in
a closed-loop configuration. These Chemicals are
designed to clean moderate fouling. If the
R.O. Membrane Elements are excessively fouled
and in-field cleaning is not successful the R.O.
Membrane Element(s) may be returned to HRO
Systems or to one of HRO Systems’ many Service
Dealers for more controlled and stronger chemical
cleaning. If you wish HRO Systems to perform
cleaning of the R.O. Membrane Element, contact us
for a Return Authorization Number, price quotation
and return instructions.
HRO CC-1
, Cleaning Compound “# 1” is an alkaline
cleaner designed to clean biological fouling and
slight oil fouling from the R.O. Membrane Element.
Biological fouling is usually the first cause of the
R.O. Membrane Element fouling. The system is
constantly exposed to seawater, and biological
growth occurs from the first day forward. If exposed
to seawater and left to sit, the R.O. Membrane
Elements become unusable and un-cleanable even
with no actual system use. This fouling can only be
minimized with fresh water rinsing whenever the
system is not in use.