Sea Recovery Aqua Whisper DX 1400-2, Руководство пользователя

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Aqua Whisper DX Modular 450-1800
Page 8-6
Maintenance
If replacing the media, the Multi Media Filter
requires approximately 15 lbs. (7 kg) of small
gravel (1/8 x 1/4 in. (3.27 x 6.35 mm) first on the
bottom then approximately 26 lbs. (12 kg) of #20
silica sand last (on top of the small gravel).
NOTE : the new gravel and sand contain
fines and contaminates. The Multi Media
Filter must be back washed prior to use.
Instructions for Back-washing of the Multi
Media Filter:
a) Open the Inlet Sea Cock Valve.
b) Position the Rinse Clean Inlet Valve, if
installed, to the normal operating position
towards the Sea Strainer.
c) Position the Rinse Clean Outlet Valve, if
installed, to the normal operating position
towards the Brine Discharge Thru-Hull Fitting.
d) Position the Multi Media Filter valves to
Backwash
e) In the Manual mode of operation, operate only
the Booster Pump.
f) After 10 minutes of back washing Stop the
Booster Pump.
g) Position the Multi Media Filter Valves to Rinse.
h) In the Manual mode of operation, operate only
the Booster Pump.
i) After 5 minutes of Rinsing Stop
the Booster Pump.
j) Position the Multi Media Filter Valves to Normal
Operation. Refer to Figure 8a, page 8-7.
11. Commercial Prefilter Element Replacement:
The Commercial Prefilter Pleated Cartridge
Element may be cleaned with water spray once
or twice. After cleaning the expected life will be
reduced in half. Attempts to clean the element
more than twice will result in a very short life and
will damage the element rendering it useless.
Change the element after the first or second
cleaning. Clean or replace the element when
plugged to the extent that the pressure into the
High Pressure Pump is 10 PSI (69 kPa) or less. At
slightly below 6 PSI (41 kPa) the System will turn
off and display a fault screen.
Base) or Shell Dolium R (Polyurea Base). DO NOT USE
LITHIUM OR SILICONE BASE GREASE.
7.
T-Connector Pressure Pick-Up: Replace any hose
or tube that is kinked. Disconnect each end of the
tube and blow air through the tube to ensure that
it is not blocked. Replace if damaged.
8. Pressure Transducers: The Pressure Transducers
are not repairable and can not be calibrated. If
inoperative check connections at the Transducer
and at the Printed Circuit Board to ensure there is
no visible corrosion or loose connections.
9. Plankton Filter Element Cleaning:
a) Unscrew the bowl counter clockwise.
b) Remove the Plankton Filter Elements from
the bowl.
c) Remove the O-Ring from the top of the bowl.
d) Clean the mesh screen filter elements with a
bristle brush and water spray.
e) Wipe the O-Ring with a damp cloth.
f) Lightly lubricate the O-Ring with
O-Ring lubricant.
g) Place the O-Ring back onto the bowl.
h) Insert the cleaned or new plankton filter
elements into the bowls.
i) Screw the bowls on clockwise.
j) Hand snug to seal the O-Ring; do not use a
wrench or other tool to tighten; do not over
tighten. Over tightening transfers stress to the
lid and bowl threads causing the lid or bowl to
fail (crack or break) and making subsequent
disassembly difficult.
10. Multi Media Filter Backwash:
The Multi Media Filter contains fine gravel and
#20 silica sand. This silica sand traps suspended
solids larger than 20 micron. The top layer of the
silica sand within the Multi Media Filter becomes
packed with suspended solids and restricts flow
through it. When the silica sand becomes packed
with suspended solids, as indicated by a loss of
pressure, it must then be back washed to waste.
This back washing procedure fluffs the silica sand
and dislodges the suspended solids from the sand
base. During back washing the suspended solids
are discharged to waste through the Multi Media
Filter Waste outlet.