Horizon Reverse Osmosis Seafari Versatile Series, Owner'S Manual

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Page 9-4
Seafari Versatile 450 - 1800
9
9.2 COMPONENT MAINTENANCE & REPAIR
1.
Inlet Thru Hull Fitting
[1]: Keep the Inlet
Thru Hull Fitting free and clear of debris and
marine growth. If the Inlet Thru Hull Fitting
is clogged, this results in a low feed pressure
condition, which causes the System to shut off.
2.
Inlet Sea Cock Valve
[2]: The packings and
connections of the Inlet Sea Cock Valve must
be tight and must properly seal. Clean the
valve cavity of debris or replace the seal and
seat, or the entire valve, as required.
3.
Sea Strainer
[3]: Keep the mesh screen free
and clear of debris. The Sea Strainer contains a
very fine monel mesh screen designed to trap
marine debris prior to entering the Booster
Pump and Pre-filters. If the mesh screen
becomes clogged, it results in a low-pressure
condition causing system shut off.
Standard Sea Strainer
: To clean or replace
the standard mesh screen remove the bowl
by turning it counter clockwise. Remove the
Mesh Screen from the bowl. Remove the flat
sealing gasket from the bowl and take care to
not damage it.
Wipe the sealing gasket with a damp cloth.
Lubricate it sparingly with Parker “O” ring
lubricant. Place the seal back onto the bowl.
Seat the mesh screen back into the bowl.
Screw the lid on clockwise. Hand-tighten only
enough to seal water in and air out.
Commercial Sea Strainer
: To clean or replace
the mesh screen remove the cap on the top by
turning it counterclockwise by hand or with
a spanner tool. Lift the Mesh Screen from the
bowl. Clean the mesh screen and lower it back
into the bowl. Ensure that the seal on the cap is
undamaged and free from debris. Replace the
cap making sure the seal is seated properly.
4. Booster Pump [5]: Replace the ceramic seal
approximately every 2000 hours, or at the sign
of leakage. (P/N HRO BPSK-5):
Disassembly
: Remove the seven bolts holding
the volute to the motor bracket. To remove
the impeller, hold the motor shaft with a
large screwdriver and remove the impeller by
grasping it with your hand and turning the
impeller counter clockwise. Remove the Seal.
Reassembly
: Clean the motor shaft and the
bracket of any corrosion or salt deposits. Place
the ceramic seat into the cavity over the shaft.
Make sure that the polished side is toward
the end of the shaft. Tap into place evenly
using a hollow piece of wood or plastic tool.
Lubricate the shaft with light oil and slip the
rotating portion of the seal over the shaft with
the carbon element toward the ceramic. Slide
it onto the shaft as far as possible. Apply blue
Loctite to the motor shaft threads. Hold the
Motor shaft and reinstall the impeller. Tighten
the impeller by turning it clockwise until it is
snug. Reinstall the volute. Tighten the bolts
evenly. Thoroughly prime the pump.
The Electric Motor requires front and rear
shaft bearing lubrication every 6 months.
Give three pumps of high temperature motor
bearing lubricant into each grease jerk. Use
a Polyurea Base Grease such as Chevron SRI
(Polyurea Base) or Shell Dolium R (Polyurea
Base). DO NOT USE LITHIUM OR SILICONE
BASE GREASE.
5.
Plankton Filter
[6]
Element Cleaning: To clean the element,
unscrew the blue bowl counter clockwise.
Remove the Plankton Filter Element from the
bowl. Remove the O-Ring from the top of the
bowl and take care to not damage it. Clean the
mesh screen filter element with a bristle brush
and water spray.
Wipe the O-Ring with a damp cloth. Lubricate
it sparingly with O-Ring lubricant. Place the
O-Ring back onto the bowl. Insert the cleaned,
or a new, plankton filter element into the bowl.
Screw the bowl on clockwise.
6.
Multi Media Filter
[6]:
Backwashing: When the Media Filter becomes
packed with suspended solids, it must be
backwashed. This process unpacks the silica
sand and dislodges the suspended solids from
the sand.
If replacing the media, the Multi Media Filter
requires approximately 15 lbs (7 kg) of small
gravel (1/8 x 1/4 inch) on the bottom then
approximately 26 lbs (12 kg) of #20 silica sand
on top of the small gravel.
To backwash the Multi Media Filter: Open
the Inlet Sea Cock Valve [2]. Position the
Inlet Clean/Rinse Valve [5], if installed, to the
normal operating position towards the Sea
Strainer [3].
Position the Multi Media Filter Valves (3 each
valves) as shown in fig.9a, page 9-5:
Valves
Positioned for Media Filter Back Wash . Press