OASE BioTec ScreenMatic² Pond Filter

Safety Information

Electrical Connection

Special regulations apply to electrical installation in outdoor areas. Only allow a qualified electrician to perform the electrical installation. The qualified electrician must possess the required professional training, knowledge, and skills. For your safety, consult a qualified electrician.

• Connect the unit only if its electrical data matches the power supply.
• Connect the device to a correctly installed socket.
• The device must be supplied through a residual current device (RCD) with a rated residual operating current not exceeding 30 mA.
• Extension cables and power distributors must be suitable for outdoor use (splash-proof).
• Protect open plugs and sockets from moisture.

Safe Operation

• The container cover contains a magnet that may affect pacemakers or implantable cardioverter defibrillators (ICDs). Keep magnets at least 20 cm away from implanted devices.
• Never operate the unit if the casing or an electrical cable is defective.
• Do not carry or pull the unit by its power cable.
• Route lines to protect them from damage and prevent tripping hazards.
• Do not make technical modifications to the unit.
• Only perform work described in this manual.
• Use only original spare parts and accessories.
• Disconnect the unit from the mains during thunderstorms to protect the electronics.
• Overvoltage can lead to operating malfunctions. Refer to the "Remedy of faults" chapter for information.
• Contact authorized customer service or OASE if problems occur.

Intended Use

This product is intended for cleaning garden ponds, in compliance with technical specifications and permissible water quality values.

Restrictions:

• Use only with water.
• Not for commercial or industrial purposes.
• Not suitable for salt water.
• Do not use with chemicals, foodstuffs, or flammable/explosive substances.

Product Description

Unit Configuration

The BioTec ScreenMatic² filter system is available in three models: 18000, 24000, and 39000. Key components include:

BioTec ScreenMatic² 18000 / 24000 Components:

• 1. Inlets (2x): For connecting filter pumps or UVC clarifiers.
• 2. Water distributor: Distributes water across the screen.
• 3. Distributor extension: Extends the distributor.
• 4. Brush: For regular cleaning of the ScreenMatic screen.
• 5. Substrate tube: For biological filtration media (3x for 18000, 4x for 24000).
• 6. Separating plate: Removable for maintenance.
• 7. Foam filter (8x for 18000, 16x for 24000): Mechanical filtration.
• 8. Plug: For closing the outlet (14) to prevent backflow during cleaning.
• 9. Dirt outlet: For draining dirty water.
• 10. Foam cleaning device: Aids in cleaning foam filters.
• 11. Holder for foam cleaning device: Stores the cleaning device.
• 12. Dirt outlet slide valve: Controls the flow from the dirt outlet.
• 13. Debris tray: Collects debris removed by the stripper.
• 14. Outlet: For returning filtered water.

BioTec ScreenMatic² 39000 Components:

• 1. Inlets (2x): For connecting filter pumps or UVC clarifiers.
• 2. Water distributor: Distributes water across the screen.
• 3. Distributor extension: Extends the distributor.
• 4. Brush: For regular cleaning of the ScreenMatic screen.
• 5. Separating plate: For media separation.
• 6. Substrate tube (12x): For biological filtration media.
• 7. Outlet: For returning filtered water.
• 8. Foam filter (18x): Mechanical filtration.
• 9. Plug: For closing the outlet (7) to prevent backflow during cleaning.
• 10. Dirt outlet: For draining dirty water.
• 11. Debris tray: Collects debris removed by the stripper.
• 12. Foam cleaning device: Aids in cleaning foam filters.

ScreenMatic Rotating Screen Unit Components:

• 1. Control device: Manages the screen cleaning process.
• 2. Operating panel: Interface for status and control.
• 3. Sensor: Detects water level to trigger cleaning.
• 4. Stripper: Scrapes debris from the screen into the debris tray.
• 5. ScreenMatic screen: The primary filter medium.
• 6. "Max. water jet" mark: Indicates the maximum water jet level.
• 7. Transformer: Provides voltage supply.
• 8. Motor: Drives the rotating screen unit.

Properties

• High performance flow-through filter for ponds up to 40m³, 60m³, 90m³, or 140m³.
• Electrically driven ScreenMatic rotating screen for automatic removal of coarse debris.
• Low-maintenance due to automatic debris removal.
• Bottom drain with slide valve for dirt removal.
• Convenient foam filter cleaning directly inside the filter.
• Includes foam cleaning device and holder.
• Tailored for OASE AquaMax Eco filter pumps.
• Direct connection for OASE UVC clarifiers (Vitronic, Bitron C, Bitron Eco series).
• Supports various filter media for optimal bacterial colonization.

Technical Data

Unit Data

Maximum Pond Volume

Dimensions

Permissible Water Values

Installation and Connection

Access to the Unit

• Remove the container cover: Provides access to the control device.
• Hinge up the screen holder: Provides access to foam filters, substrate tubes, separating plate, and outlet.

Remove the Container Cover

BioTec ScreenMatic² 18000, 24000: Release the two locking clips, then lift and remove the cover.

BioTec ScreenMatic² 39000: Lift the cover by the handles and remove it. Handles may need to be screwed onto the cover if not pre-fitted.

Hinging the Screen Holder Up/Down

To hinge up/open:

1. Remove the debris tray.
2. Hinge up the distributor extension.
3. Hinge up the screen holder with the ScreenMatic rotating screen unit.

To hinge down/close:

4. Carefully hinge down the screen holder.
5. Push the distributor extension down until it audibly engages.
6. Insert the debris tray.

Installation Planning

WARNING: Serious injury or death from electric shock is possible.

Protective measures for swimming ponds:

• Use only electrical units or installations with a rated voltage of U ≤ 12 V in the water.
• Electrical installations with a rated voltage of U > 12 V must be located at least 2 m from the water.

WARNING: Due to the high weight of the unit, spinal injuries or crushing of limbs is possible when carrying the unit (over 25 kg).

• A minimum of four people should carry the container by the handles.
• Protect your limbs from crushing injuries.
• Do not transport the container while filled with water.

Electrical components operate at a rated voltage of UDC = 12 V, supplied via an external transformer.

• With UVC clarifier fitted: The filter system and transformer must be at least 2 m from the water.
• Without UVC clarifier fitted: The filter system can be next to the water, but the transformer must be at least 2 m away.

For optimum results, consider ambient conditions:

• Place the filter on a stable, level base (slabs or poured concrete) to prevent subsiding.
• Ensure sufficient space for cleaning and maintenance.
• Allow dirty water to drain into a drain or far from the pond to prevent backflow.
• Position the inlet into the pond no higher than the filter outlet (e.g., above a water course or waterfall). A water course or waterfall aids oxygenation of the returned water.

Diagram Description: The diagram shows the filter unit positioned at least 6.6 ft (2 m) away from the water body.

Inlets

The filter system has two inlets with stepped hose adapters for connecting a filter pump or UVC clarifier. If an inlet is not used, fit a closed stepped hose adapter. Adapters are delivered closed.

Prerequisite: Container is open, screen holder is hinged up.

Connecting the Filter Pump

How to proceed:

1. Shorten the stepped hose adapter to match the hose diameter to reduce pressure losses.
2. Insert the stepped hose adapter with flat seal into the inlet opening.
3. Screw the distributor nut with O-ring onto the adapter and hand-tighten. (For BioTec ScreenMatic² 39000, a 50 mm hose sleeve can be used as an alternative).
4. Slip the hose clip over the hose, fit the hose onto the connector, and secure it.

Diagram Description: Diagrams illustrate the connection process for models 18000, 24000, and 39000, showing the specific adapters and their placement.

Connecting a UVC Clarifier

Fitting the Outlet

Prerequisite: Container is open, screen holder is hinged up.

How to proceed:

1. Fit the UVC clarifier with flat seal into the inlet opening.
2. Screw the distributor nut with O-ring onto the stepped hose adapter and hand-tighten. Refer to the UVC clarifier's operating instructions.

Diagram Description: Shows the UVC clarifier being fitted into the inlet opening.

Outlets

• Use suitable pipes.
• Avoid right-angled bends; 45° bends are more efficient.
• Lay pipes and hoses with a gradient (50 mm/m) to ensure they can drain completely, preventing freezing and bursting.
• Support connected pipes to increase stability and prevent sagging.

Fitting the Outlet (BioTec ScreenMatic² 39000)

The outlet is not fitted on delivery.

Prerequisite: Container is open.

How to proceed:

1. Push the O-ring onto the outlet.
2. Position the outlet from the outside against the container wall, ensuring the marking points up and aligns with the holes.
3. Use three oval head screws to secure the outlet from the inside. Tighten screws diagonally for a uniform seal. Use the "drill" setting cautiously on cordless screwdrivers to avoid damaging the thread.

Fitting the Dirt Outlet (BioTec ScreenMatic² 39000)

The dirt outlet is not fitted on delivery.

Connecting the Dirt Outlet

The container can be drained via the DN 75 dirt outlet with a slide valve for cleaning, repair, or overwintering. Connect a suitable DN 75 pipe to drain dirty water into the sewer system.

Carry Out the Electrical Connection

How to proceed:

1. Thread the connection cable through the container wall opening and seal it with the plug. Ensure the cable inside is long enough to prevent tension when the screen holder is hinged up. Avoid tangled cables.
2. Connect the cable plug to the transformer socket and hand-tighten the union nut.

Diagram Description: Illustrates threading the cable and connecting it to the transformer.

Commissioning/Start-up

Remove protective film from substrate tubes and insert them into the container. Substrate tubes are sealed in protective film on delivery.

Thoroughly clean the pond before initial filter start-up to prevent overloading with soiled water. OASE recommends using the PondoVac pond vacuum cleaner. This cleaning is usually not necessary for new ponds.

Biological Filter Starter

Foam filters require several weeks to achieve full biological cleaning effect. OASE recommends using the filter starter Biokick for faster bacterial growth, which enhances pond water quality.

Note: Leave the UVC clarifier switched off for at least 36 hours when using filter starters, medications, or pond care products to increase their lifespan.

Sequence of Steps During Starting Up

1. Close the slide valve of the dirt outlet.
2. Check that the filter system (pipes and hoses) is complete.
3. Remove the container cover.
4. Connect the transformer for the control device to the power supply.
5. Switch on the filter pump and, if necessary, the UVC clarifier. Ensure water returns to the pond via the return pipe.
6. Check all pipes, hoses, and connections for leaks. Expansion seals may leak initially until fully expanded.
7. Adjust the control device to the flow rate if necessary (see "Aligning the control device").
8. Check the function of the ScreenMatic rotating screen unit (see "Operation").
9. Fit the container cover.

Important: Only operate the unit with the container cover in place. Use flexible hoses for permanent pump installation to reduce noise. Substrate tubes must remain submerged for maximum effectiveness; if the water level is too low, place the top substrate tube directly into the pond in a well-flowed area.

Aligning the Control Device

Do not align the control device until after the running-in period (2-3 hours). This prevents the pump from swirling up excessive debris that could overflow the screen.

Align the control device so the sensor triggers only when a well-formed line of debris forms on the screen. The stripper then optimally removes this debris.

How to proceed:

1. Remove the screw from the control device and take it out.
2. Insert the control device into the determined position, re-insert the screw, and hand-tighten.

Aligning based on soiling: To prevent premature soiling of foam filters, ensure dirty water does not flow beyond the "Max. water jet" mark into the debris tray. Adjust the control device position only if water flows to or beyond this mark, even after cleaning the screen.

Diagram Description: Diagrams show the typical positions of the control device for different flow rates and models (18000, 24000, 39000).

Operation

Operating Panel

The operating panel features:

• 1. LED (2 colors): Indicates status: Green (operational), Flashing Green (cleaning active), Flashing Green/Red (malfunction), Flashing Red (malfunction).
• 2. Button (Start/Stop Manual Cleaning): Initiates or stops manual cleaning.

Manual Cleaning

Press the button for 1 second to rotate the ScreenMatic screen by one revolution. Pressing again for 1 second stops the rotation prematurely.

Automatic Cleaning

When debris builds up, the water level on the ScreenMatic screen rises. When the sensor contacts the water, it triggers the screen's rotation. Brief backward movements and one forward rotation convey debris to the debris tray.

Sequence of an automatic cleaning cycle:

• Normal soiling: Brief backward movement (3x), then one rotation forward.
• Heavy soiling or misaligned control device: Brief backward movement, then one rotation forward.

Time-Dependent Cleaning

The ScreenMatic unit performs cleaning cycles at intervals based on ambient temperature:

• ≤ 50°F (≤10°C): 6-hour interval
• 50°F - 68°F (10°C - 20°C): 4-hour interval
• ≥ 68°F (≥20°C): 3-hour interval

This ensures cleaning even if the sensor is soiled or defective, or if there is minimal soiling/low flow rates.

System Messages

The LED indicators signal malfunctions:

• Flashes green/red: No automatic cleaning cycle within 48 hours (possible causes: sensor soiled, no dirty water, no water flow, no water detected by sensor, insufficient pump capacity). Remedies include cleaning the sensor, starting the pump, correctly positioning the control device, or adjusting pump capacity.
• Flashes red: 20 automatic cleaning cycles in succession (possible causes: ScreenMatic screen soiled, sensor soiled, control device incorrectly positioned, pump capacity too high). Remedies include manual cleaning, cleaning the sensor, repositioning the control device, or adjusting pump capacity.
• Flashes green: ScreenMatic screen not rotating despite manual cleaning (possible causes: motor cable not connected, motor defective). Remedies include checking cable connections or replacing the motor.
• LED Off: ScreenMatic screen not rotating (possible causes: connection cable not connected to transformer, transformer not connected to mains, transformer/control device defective). Remedies include checking connections, connecting the transformer, or replacing the defective component.

Maintenance and Cleaning

WARNING: Serious injury or death from electric shock is possible.

• Disconnect all electrical devices in the water from the power supply before reaching into the water.
• Disconnect the device from the power supply before starting work.
• Do not use aggressive cleaning agents or chemical solutions.
• Recommended for limescale: Vinegar- and chlorine-free household cleaner.
• Rinse all parts thoroughly with clean water after cleaning.

Regular Cleaning Work

• Empty the debris tray: Dependent on pond soiling. Remove the debris tray by hinging up the screen holder.
• Clean the ScreenMatic screen: If clogged, clean downstream of the water distributor using the brush (activate manual cleaning). For intensive cleaning, use OASE PumpClean.

Clean Foam Filters

Clean foam filters when water level exceeds the 100% mark on the separating plate. Do not use chemical cleaning agents that kill filter bacteria.

Prerequisite: Filter pump off, container open, screen holder hinged up. For 24000 model, separating plate and substrate tubes removed. Water level lowered to outlet height or below.

How to proceed (18000, 24000):

1. Insert plug into outlet from inside to close it. Remove separating plate if needed for access.
2. Switch on filter pump until foam filters are covered with water, then switch off.
3. Compress foam filters several times with the foam cleaning device.
4. Allow dirty water to drain. Open and close the dirt outlet slide valve when the container is empty.
5. Repeat steps 2-4 as needed.
6. Rinse container with clear water to remove loosened dirt particles (repeat steps 2 and 4).
7. Remove the plug from the outlet.
8. Close the dirt outlet slide valve.
9. Hinge down the screen holder, insert the debris tray, and switch on the filter pump.

How to proceed (39000):

1. Insert plug into outlet from inside to close it.
2. Switch on filter pump until foam filters are covered with water, then switch off.
3. Compress foam filters several times with the foam cleaning device.
4. Allow dirty water to drain. Open and close the dirt outlet slide valve when the container is empty.
5. Repeat steps 2-4 as needed.
6. Rinse container with clear water to remove loosened dirt particles (repeat steps 2 and 4).
7. Remove the plug from the outlet.
8. Close the dirt outlet slide valve.
9. Hinge down the screen holder, insert the debris tray, and switch on the filter pump.

Diagram Description: Diagrams illustrate the water level indicators and foam filter cleaning steps for models 18000 and 24000.

Cleaning/Replacing the Substrate Tubes

Substrate tubes are filled with zeolite on delivery. OASE recommends replacing zeolite with Phosless once bacteria are established and foam filters are effective.

Prerequisite: Filter pump off, container open, screen holder hinged up.

BioTec ScreenMatic² 18000:

1. Remove the separating plate.
2. Remove substrate tubes (three tubes) and clean or replace contents. Push tubes against the wall opposite the outlet when inserting.

BioTec ScreenMatic² 24000:

1. Remove the separating plate.
2. Remove substrate tubes (four tubes) and clean or replace contents. Place two tubes left and two tubes right of the outlet.

BioTec ScreenMatic² 39000:

Remove substrate tubes (twelve tubes) individually and clean or replace their contents.

Diagram Description: Diagrams show the removal of substrate tubes for models 18000 and 24000.

Cleaning/Replacing the ScreenMatic Screen

Prerequisite: Filter pump off, container open, debris tray removed.

How to proceed:

1. Remove the screw for the control device, detach the device, and place it aside. Disconnect the motor cable plug if necessary. Mark the control device's position for reassembly.
2. Remove the ScreenMatic rotating screen unit from its holder. (Models 18000/24000: Press locking clips; Model 39000: Press in direction of water distributor).
3. Undo nuts on the side section, remove the side section and stripper.
4. Release the clamping lever and remove the ScreenMatic screen. Clean the stripper and the screen (vinegar cleaner can be used). Replace the screen if necessary.
5. Reassemble the unit in reverse order, ensuring the clamping lever engages when tensioning the screen.

Diagram Description: Diagrams illustrate the removal of the control device, screen unit, and side section.

Replace the Foam Filters

Prerequisite: Filter pump off, container open, screen holder hinged up.

How to proceed:

1. Press both locking clips on the foam holder.
2. Remove the foam holder plate and foam filter.
3. Push a new foam filter onto the holder, refit the plate, and push down until clips engage.

Recommendation: Replace foam filters partially at intervals of at least a week to avoid impairing biological action. Never replace more than 50% of the foam filters at one time.

Diagram Description: Diagram shows the process of releasing locking clips and removing the foam filter.

Storage/Overwintering

The unit is protected from freezing temperatures when stored in a garage or enclosure. It can be operated as long as water temperature does not drop below 39°F (4°C).

To reduce cooling effects during circulation in winter:

• Position the pump closer to the water surface.
• Insulate return pipes.
• Do not allow water to flow into the pond via a water course.

For outdoor installation or when freezing temperatures are expected (below 46°F / 8°C):

• Drain the unit, hoses, pipes, and connections thoroughly.
• Open all slide valves to prevent pooling.
• Cover the container to prevent rainwater entry.
• Protect any lines and slide valves that cannot be fully drained from freezing.

Troubleshooting

Wear Parts

• Foam filters
• Substrate tubes
• ScreenMatic screen

Disposal

NOTE: Do not dispose of this unit with domestic waste.

Dispose of the unit using the provided return system. Contact your local disposal company for instructions. Disable the unit by cutting off the cables.