Parker Coral Sea, Owner'S Manual

Page: 20 / 248

Coral Sea Vertical 6800
Page 2-6
Pre-installa
tion
the Media Filter and inlet of the primary 20 micron
cartridge pre-fi lter allow for observation of the
condition of the Media Filter when correlated to
pressure gauge.
12. The 5 microns cartridge pre-fi lters, installed after
the 20 micron cartridge pre-fi lters, accomplish fi nal
polishing fi ltration of the Systems feed water down
to 5 microns. These secondary cartridge prefi lters
consist of RFP housings with a removable lid and
specially treated cartridge fi lter elements. There are
over 200 square feed of actual fi lter surface within
the two secondary pre-fi lter housings. These unique
secondary, or fi nal polishing, pre-fi lter elements
effi ciently fi lter suspended solids from the System
feed water for fi nal protection of the R.O. membrane
element. It is essential that the pre-fi lter elements be
changed on a regular basis, as they become fouled.
13. The small ball valve located on top of each of
the cartridge pre-fi lter housing allow for air to be
removed from the pre-fi lter housings. Air must be
removed form the housings for safety reasons and
to ensure full utilization of the cartridge pre-fi lter
elements.
14. The low pressure gauges between the outlet of the
primary 20 micron cartridge pre-fi lters and the inlet
of the secondary 5 micron cartridge pre-fi lter allow
for observation of the condition of the primary 20
micron cartridge pre-fi lter elements when correlated
to pressure gauge.
15. Low pressure protection switch will turn the System
off automatically if feed water fl ow, through the pre-
fi ltration section, drops below the requirements of the
high pressure pump. Shutdown due to low pressure
would indicate that the pre-fi ltration section requires
maintenance such as Media Filter backwashing
or cartridge pre-fi lter element changing. This low
pressure protection switch protects the high pressure
pump, the R.O. membrane element, and the booster
pump from damage.
16. The low pressure gauge [38] between the outlet of
the secondary 5 micron cartridge pre-fi lters and the
inlet of the high pressure pump allow for observation
of the condition of the secondary 5 micron cartridge
pre-fi lter elements when correlated to pressure
gauge.
17. Gallon/liter per minute feed water fl ow meter
measures the rate of feed water progress through
the pre-fi ltration section, into the high pressure pump
and, in turn, into the R.O. membrane elements. The
fl ow meter is calibrated in gallons, and liters per
minute. This is one of the most important visual check
points of the SRC System, and should be monitored
on a regular basis.
Proper interpretation of the GPM water fl ow meter
readings, and movements, will allow the user
to determine the need for maintenance or the
occurrence of a malfunction in other components. The
GPM feed water fl ow meter is, therefore, important
to the proper operation of the System and must be
monitored on a regular basis.
D. PRESSURIZATION SUBSYSTEM:
Proper pressure and proper fl ow across the SRC R.O.
membrane element are two of the basic requirements for
reverse osmosis. Both must be maintained at specifi ed
levels or the System simply will not function correctly. This
is why it is important that the prefi ltration subsystem be
maintained to ensure that the high pressure subsystem
receives a proper fl ow of feed water. The normal operating
pressure of the SRC system is 700-850 psi (48.1-55.2 bar)
for sea water use, or, 200 to 400 psi (13.8-27.6 bar) for
brackish water use. The maximum pressure the System
will develop is 975 psi (67.2 bar), because the high
pressure switch supplied with the System automatically
shuts the System off at 925 psi +/-50 psi (63.8 bar +/-3.5
bar).
Proper pressure into the System and fl ow across the SRC
R.O. membrane is listed in the specifi cation section of
this manual. Over pressure will cause damage to the R.O.
membrane element and under pressure results in low
product water production as well as higher salinity content
in the product water. Under fl ow of the feed water into the
R.O. membrane element will cause rapid and premature
fouling of the R.O. membrane element as a result of higher
than normal recovery (percentage of recovered water to
feed water).
Fluctuations in temperature of the feed water will affect
System productivity.
1. Electric drive motor is an AC (alternating current)
electric motor and may be ordered with varying
NEMA, or industry, specifi cations to fi t virtually any
application or requirement. Consult Sea Recovery’s
Application Engineering Department for specifi c
information on special drives.
2. High Pressure Pump (standard): The APP pumps
are based on the axial piston principle and they are
designed so that lubrication of the moving parts
in the pumps is provided by the fl uid itself. No oil
lubrication is thus required.
All parts included in the APP pumps are designed
to provide long service life and minimum of service
required.
The pumps are fi xed displacement pumps in which
the fl ow is proportional to the number of revolutions
of the input shaft and the pump displacement,
regardless of any counter-pressure. .
Coral Sea Owner's Manual