laguna PRESSURE-FLO 700 Mode D'emploi page 4

The filters are designed to work in tandem with a solids handling pump. For best
results, use a Laguna Max-Flo circulating pump. With the filter connected to the outlet
of a pump, water enters the unit through water inlet (X). It is then forced to pass
through the mechanical filtration stage, consisting of foam filters that intercept
and trap dirt and debris. Next, water reaches the biological filtration* chamber
where it comes into contact with beneficial bacteria. Finally, dirt-free water passes
along the UV-C lamp unit (B), where it is exposed to ultraviolet rays that inhibit algae
growth. Water then returns to the pond through outlet (W).
*Pressure-Flo 2500 UVC does not feature the biological filtration chamber.
Backwash-Cleaning System
During operation, coarse debris is captured at the surface of the foam filters. As a
result, sooner or later depending on pond conditions, the external surface of the foam
filters will clog and hinder proper filtration, because of reduced water flow. The
limited water flow through the foam filters reduces the effectiveness of both the
biological and UV-C filtration. This condition can easily be detected thanks to the
cleaning indicator (U).
Pressure-Flo filters feature a unique Backwash-Cleaning System that completely
cleans the entire surface of the mechanical foam filters. The complete cleaning
operation can easily and comfortably be done in a few minutes with no need to open
the unit. Cleaning will ensure that the filter will perform at optimal levels for many
days. Though the Backwash-Cleaning System prolongs the time between maintenance
sessions, thorough cleaning of the unit is necessary periodically. See Cleaning and
Maintenance of the Pressure-Flo Filter for more details.
Cleaning indicator
This unit features a cleaning indicator (U), which lets you know when the filter needs
backwashing or cleaning. The red indicator height is approximately proportional to the
filter clogging level. When the red indicator is low, the filter is clean. When the red
indicator is at the top of its stroke, the filter needs cleaning.
The cleaning indicator may be affected by many variables, such as waterfall height and
pump performance. Its operating characteristics have been calibrated according to
specific application conditions indicated in the chart below (Selecting the right
Pressure-Flo and Max-Flo pump for your Pond). Different application conditions
may lead to different results.
Selecting the right Pressure-Flo and
Max-Flo pump for your pond
Using the following table, select the correct Laguna Max-Flo pump/Pressure-Flo filter
combination according to your pond size and conditions. Due to the high number of
variables, the following recommendations are offered as general guidance only.
PF 700 PF 1400 PF 2100
120V/60HZ
PF 2500 PF 5000 PF 8000
230-240V/50HZ
PT8232
Recommended
PT8236 PT8240
PT8236
Laguna Max-Flo pump*
Meters 4 4 5.5
Recommended total
hose length**
Feet 13 13 18
Minimum hose dia.
Inches 1 1/4 1 1/4 1 1/4
to achieve above
Millimeters 32 32 32
performances
Recommended max.
Centimeters 60 60 100
waterfall height to
achieve above
Inches 24 24 39
performances
Maintenance of filter will be more frequent
during the hot summer months.
* If the application includes a higher waterfall
than the maximum indicated,
choose a bigger pump.
** Total length outlet + inlet. For reference only.
The final flow rate depends on many factors,
such as the length and the diameter of the
hose, hosing kinks or bends, and the height
of the waterfalls.
Filtering mode
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Installation
Location of the filter
Choose a suitable location for your Pressure-Flo filter, keeping in mind the following
recommendations:
• Place the Pressure-Flo Filter on a firm and level base, where it is safe from
flooding and has enough ventilation. Protect the appliance from direct sunlight.
• Place either above ground or buried with the lid clamp (O) at least
5 cm/2 inches above ground level.
• To avoid overheating, do not cover the filter.
• Place the filter at least 1 meter/3.2 feet from the pond edge and make sure
it cannot fall into the water in any way.
• Make sure you have full access to the lid of the unit for maintenance.
• Do not operate the filter with a water pressure greater than 0,4 bar or
5.8 PSI of pressure. Never connect the filter to public water works.
• Orient the filter so that the water inlet (X), water outlet (W) and drain outlet (T)
point in the desired directions to avoid sharp bends in the hosing.
Hose connections
Pressure-Flo filter requires the connection of 3 hoses (not included): one for the inlet
of the unit (from the pond pump), one for the outlet which takes filtered water to the
pond, and one for discharging dirty water from the filter to a location outside the
pond during maintenance.
When selecting and installing the hoses for your application, maximize potential flow
by choosing the largest diameter and shortest hosing possible and avoiding kinks
and sharp bends.
Pressure-Flo Filters are equipped with 3 universal click-fit couplings (H), which will
make connecting and disconnecting the hosing fast and easy. Connect flexible hoses
to click-fit couplings and secure them with an adequate hose clamp (not included).
IMPORTANT
– Universal click-fit couplings (H) allow the connection of
different diameter flexible hosing, but it is important to cut off the
unused smaller diameter hose-tails to avoid flow restrictions.
When flexible hoses are securely connected to click-fit couplings, you can disconnect
hosing from the unit simply by pushing the click-fit coupling button and pulling. To
connect click-fit couplings to the unit, insert them onto the male connectors located
on the lid of the unit and ensure that the coupling button comes up fully.
Water Inlet (X): the Water Inlet is where pond water enters the Pressure-Flo filter.
Simply connect the outlet of a Laguna Max-Flo solids handling pump to the
Pressure-Flo inlet (X) using Laguna non-kink hosing. The pump circulates dirty water
from the pond to the Pressure-Flo filter.
PF 3200 Water Outlet (W): the Water Outlet returns filtered water to the pond when the
PF 12000 filter is operating in filtering mode. Hosing attached to the water outlet (W) can be
placed directly in the pond or used to create a watercourse or waterfall. This outlet is
PT8244 activated when the Mode Selector Switch (V) is pointing at the water outlet (W)
(Filtering Mode). The end of the outlet hosing should be placed as far away from the
pump inlet as possible to maximize water circulation in the pond.
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Drain Outlet (T): the Drain Outlet is where dirty water exits the filter when using the
Backwash-Cleaning System. Connect a hose to the Drain Outlet to allow dirty water to
1 1/4
drain out of the filter and into a sewage system or garden. This outlet is activated when
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the Mode Selector Switch (V) is pointing at the Drain Outlet (T) (Drain Mode).
IMPORTANT
– During normal "Filtering Mode" operation, close the
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Drain Outlet (T) using the Click-fit Sealing Cap (I).
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TIP: dirty pond water is nutrient-rich and chlorine-free and is particularly good for
watering the garden.
Drain mode
Filter Start-up, Operation and Backwash-Cleaning
IMPORTANT!
Before the first and every
–
start-up verify the following:
• Before the first start-up, it is necessary to install the
lid O-ring (P), which is supplied in a separate poly
bag. This O-ring must be correctly inserted in its
seat at the top of the filter canister (Fig. 1).
• This filter comes with the UVC lamp already installed.
Before connecting the filter to the power supply, it is
necessary to perform the Filter Wet Test. Refer to the
section "Changing the UV-C Lamp and Cleaning the
Quartz Sleeve" for detailed instructions.
• The Biological Media must be placed in the Filter
Case as indicated in the picture (except Pressure-
Flo 2500 UV-C)(Fig. 2)
• Ensure that the lid (G) is securely closed with the lid
clamp (O) and the lid O-ring (P) correctly sitting in its seat.
IMPORTANT: Before applying the lid clamp (O), the lid
(G) must be pressed down until the gap between lid and
filter case is eliminated. The lid clamp must be latched,
with the safety metal lock (Z) inserted correctly inside the
latch slot. WARNING: Pay attention not to pinch your
fingers or the line cord, while latching the lid clamp.
A padlock (not included) can be inserted in the bottom
hole of the safety lock (Z) to secure it.
• The Mode Selector Switch (V) must be set to the "Filtering
Mode" position with the switch pointing at Water Outlet
Z
(W). Mode selector (V) must be fully turned 90°;
do not set it at intermediate positions.
• Ensure that all hoses have been securely connected to the unit and placed in their final
position. Ensure that the male section of all Click-Fit couplings is equipped with the
rubber O-Ring (aa).
During normal "Filtering Mode" operation, close the Drain Outlet (T) using the
Click fit Sealing Cap (I).
Always ensure that the Click-fit Sealing Cap is securely locked in place
(push button fully up).
CAUTION – Do not operate the UV-C lamp (B) without water flowing
through the unit.
After the above verifications, proceed as follows:
1) Turn on the pump and run the filter for several minutes to check that there are no water leaks
2) If everything is OK and water regularly flows through the unit, plug the Pressure-Flo UV-C lamp
into the power supply. The lamp indicator (R) lights up with a blue shimmer when the UV-C
is operating; this light can be better viewed after dusk.
Keep the filter working for 24 hours a day and ideally all year round, provided that there is
no frost and water can flow freely through the unit.
Backwash-Cleaning System
When the foam surface becomes clogged, the Backwash-Cleaning System quickly
and efficiently restores normal filter operation without having to open the unit. Cleaning
should be done at least weekly or whenever the cleaning indicator (U) detects that the
filter is clogged or dirty or when cloudy water comes out of the filter.
If the pond is very dirty and during the first weeks the unit is used, the filter may need more
frequent cleaning.
Proceed as follows:
1) Turn off the power to the pond pump.
2) Remove the click-fit Sealing Cap from the Drain Outlet (T). CAUTION: there will be a small
flow of water coming out.
3) Connect a drain hose to the Drain Outlet (T) and ensure that it will expel the dirty water where desired.
4) Turn the Mode Selector Switch (V) to the Drain Mode position (point selector fully at drain
outlet (T). A small amount of water may continue to come out of the Water Outlet
(W). This is normal. To avoid this, remove the Universal Click-Fit from the Water Outlet
and connect the Sealing Cap Click-Fit.
5) Turn on the power to the pond pump
6) Slide both cleaning handles (S) up and down. The up-and-down sliding motion causes the
cleaning blades to scrape against the surface of the foam filters, dislodging debris and
suspending it in the outer chamber of the filter, where water loaded with the suspend-
ed debris is forced out of the filter through the Drain Outlet (T). Proceed for several min-
utes until you see clear water coming out through the drain hose.
CAUTION
– – The cleaning system uses pond water.This fact must be considered when using
the cleaning feature. At the end, refill the pond to the desired water level.
7) Turn off the power to the pond pump
8) Turn the Mode Selector Switch (V) to the Filtering Mode position (selector fully pointing at
Water Outlet (W). The filter is now in normal filtering mode. A flow of green water coming
out for a few seconds is quite normal.
9) Seal the Drain Outlet (T) using the Click-fit Sealing Cap (I). Ensure that it is securely
locked in place (push button fully up). If the filter remains clogged at the end of this
operation, inspect the Cleaning Indicator to see whether it is clean and unimped-
ed (refer to Foam and Biological Media Cleaning, point 11, for detailed instruc-
tions). If the Cleaning Indicator continues to signal clogged, perform Foam and
Biological Media Cleaning as explained below.
10) Turn on the power to the pond pump.
P If the filter remains clogged at the end of this operation, perform Foam and Biological
Media Cleaning below.
Cleaning and Maintenance of the Pressure-Flo Filter
WARNINGS:
• Do not attempt to open the lid clamp (O) and lift the lid when the pump
Fig. 1 and the filter are in operation. The lid clamp latch features a safety metal
insert to prevent accidental opening.
• DO NOT ATTEMPT TO VIEW THE LAMP WHEN LIT! Direct exposure to
Fig. 2
ultraviolet light can damage eyes and skin.
• The UV-C lamp (B) and the quartz sleeve (C) are made of glass. Handle all
parts with care.
• Make sure that the internal electrical parts of the appliance are dry
before, during and after the maintenance operations.
• The Mode Selector Switch (V) simply diverts water but does not stop it.
Foam and Biological Media Cleaning
When the Backwash-Cleaning System does not produce expected results or
at least once in a season, it may be necessary to thoroughly wash or replace the foam
filters (M). During the hot summer months, more frequent cleaning is required.
During this operation, the biological media can also be cleaned and/or replaced
(except Pressure-Flo 700/2500 UVC).
1) Switch off the UV-C lamp (B) by disconnecting the unit plug from the main power supply.
2) Switch off the pump that supplies the Pressure-Flo Filter.
3) Disconnect all hosing from the unit by releasing the click-fit couplings
(push the press button and pull).
4) Slowly lift the Cleaning Handles (S) up to their maximum extension above the filter.
5) Remove the safety insert from the metallic lid clamp (O). Unlatch the metallic lid clamp.
6) Remove the Lid (G) by grasping the cleaning handles or by gently levering into
the side slots by means of an adequate flatheaded screwdriver. CAUTION: do
not force the guiding rods sideways as this may damage the unit.
CAUTION
– The lid integrates the UV-C unit with the lamp and the quartz sleeve,
which are made of glass. HANDLE ALL PARTS WITH CARE!
7) You now have access to the Foam Filters (M). Remove all of them together by
grasping and lifting the internal Foam Support Frame (N).
8) Free the Foam Filters (M) from the Foam Support Frame (N) and rinse with pond water
or replace them as required.
9) Rinse the biological media located in
the lower section of the Filter Case
(Q) with pond water or replace as
required. Pressure-Flo 2500 UVC does
not have a biological media chamber.
10) Clean the Filter Case (Q) with water,
particularly around the top edge where
the lid sealing O-ring (P) is seated.
11) If necessary clean the Cleaning
Indicator (U) after disassembling it as
follows: 1) remove the retaining flange
(E) by rotating it counter-clockwise (the Mode Selector Switch (V) must be set to the
"Filtering Mode" position), 2) remove the indicator and its spring. Rinse all parts in
water and reassemble them with
care. (Fig. 3 - Fig. 4)
12) Inspect and clean the two
Cleaning Blades (L) and the
guide rods. If necessary, replace
the blades with new ones. Each
blade can easily be detached from the guiding rod by unscrewing the screw in
the middle.
13) Put the foam and biological filtering media back in their original locations.
Ensure that the foam filters are properly stacked with no space between them.
14) Reassemble the unit with care. Make sure that the biological filtration media does
not interfere with the foam support frame (N) and that the frame is refitted correctly.
15) The filter is now ready for start-up. Read and follow all instructions in
Filter Start-up, Operation, and Backwash-Cleaning.
NEVER use soap or detergents for cleaning. Any remaining traces may
pollute the pond and result in damage to sensitive fish tissues.
E
Fig. 3
Fig. 4
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