MPF Makoi Drum Filters and Biodrums

1. Preface

Thank you for purchasing an MPF drum filter or Bio-drum. This filter is a premium quality product with exceptionally high production standards. This manual is intended to assist with the installation and usage of the filter, and to advise on necessary maintenance.

KEEP THIS MANUAL IN A SAFE PLACE! IF THIS PRODUCT CHANGES FROM OWNER, PASS ON THE COMPLETE MANUAL!

To enjoy this product for a long time, please read this manual carefully and strictly follow the guidelines. If you are uncertain about the content, do not understand assembly instructions, or are unsure about certain parts, please contact the shop where you purchased the product.

The manual also informs you about possible hazards. The user, installer, and maintenance technician are responsible for observing and checking the procedures described. While built to safety regulations, risks can arise if the filter is not used/installed professionally, not deployed for its intended purpose, or if safety regulations are ignored. The manufacturer accepts no liability for incorrect deployment. Children under 16, and individuals unable to recognise/estimate risks or unfamiliar with this manual, are not permitted to use this device.

The combination of water and electricity can be life-threatening if the filter is not installed or used correctly.

The general terms of MPF apply to all MPF products.

2. Shortcomings and Claims for Compensation, Disclaimer

2.1 Shortcomings and Claims for Compensation

MPF is liable only for shortcomings present at the time of delivery. Minor variations in model/appearance that do not marginally influence intended usage are excluded.

Warranty for usage and suitability is accepted only if within MPF specifications stated in writing. Verbal agreements are only valid if they are part of a written agreement. Only MPF's terms and specifications are valid; MPF does not accept third-party terms. Specifications in this manual prevail.

If the product is used for purposes other than intended, the customer must thoroughly investigate suitability. The customer is entirely responsible, and liability lapses if the product is not used as intended, unless MPF expressly agrees otherwise in writing. Modifications by the user void the warranty and all claims.

Every user is personally responsible for correct usage. This manual does not exempt the user from responsibility for safe application, correct installation, operation, and maintenance.

By using this manual, you agree that the manufacturer is not liable for personal injury or material damage resulting from filter usage, especially from inadequate pipes or connections. Damage from insufficient cleaning or maintenance intervals is not covered by warranty.

2.2 Warranty Limitations

Warranty for shortcomings is limited to efforts to remedy them, either by repair or replacement of parts, at MPF's discretion. If shortcomings cannot be remedied or parts supplied, the customer may cancel the purchase agreement.

Warranty is limited to the filter itself. MPF is not liable for consequential damage (e.g., flood, loss of animals) due to non-functioning, defects, or malfunctions.

2.3 Reporting Damage

Customers must inspect goods immediately after delivery. Apparent/possible damage must be reported in writing; hidden defects immediately after identification. Transport damage must be reported to the transporter and/or MPF within 24 hours. Untimely reporting may void the warranty.

2.4 Liability Exclusions

MPF is not responsible for consequences of incorrect application, use, maintenance, or operation, nor for normal wear. This includes thermal, chemical, electro-chemical, or electrical influences, or failure to observe the user guide. Damage from unapproved modifications or adjustments also voids liability.

2.5 Incorrect Usage and Packaging

Damage unambiguously attributed to incorrect usage is the user's responsibility. For product returns, the customer must ensure proper packing and shipment to prevent breakage/damage. Inadequate packaging damage is the customer's responsibility.

2.6 Limitation of Claims

Claims against MPF become barred within one year after delivery. This also applies to damage claims regardless of legal cause. The limitation period does not apply in cases of concealed damages, physical injury, or damage due to intent or deliberate negligence.

2.7 Investigation Fees

If reported damage or claims are found to be intentional or due to negligence during investigation or repair, a fee may be charged for defect removal. The customer may refuse necessary repairs and demand the filter's return. Investigations are bound to a lump-sum indemnity if the customer is responsible for the damage.

2.8 Replacement Parts

Replacement parts are available for 5 years after product delivery. Prices are listed on the MPF website.

2.9 Reservation of Changes

The manufacturer reserves the right to modify the product at any time without prior notification. No claims can be made if design, functionality, or performance is modified. Filter specifications prevail and are guaranteed.

3. General

3.1 Description of the Drum Filter

The Bio-drum and/or drum filter consists of a drum sieve driven by an electro-motor, including control electronics and a rinse pump. It filters and discharges floating particles, dirt, and algal remains. Bio-drums have an additional space for organic filter material (e.g., Helix) with an air stone or disc.

This drum filter is designed for use in ponds with fresh water only.

Water flows into the drum's inlet openings. Dirt is trapped by the mesh. As the cloth becomes more polluted, water flow decreases. The water level behind the drum falls, activating a sensor. The sensor signals the electronics, which activate the drum motor and rinse pump. The drum rotates, and the rinse pump sprays the mesh clean. Waste water is collected in a duct and flows out, potentially to a sewer. After a standard 14-second rinse, the electronics deactivate, and the drum stops rotating.

3.2 Warnings

Only staff with sufficient knowledge of drum filters and international accident prevention regulations may perform maintenance. Connection and settings must comply with applicable electrical regulations.

3.3 Used Symbols and Warnings

⚠️ WARNING – ELECTRICAL DANGER! LIFE-THREATENING!

Electric shocks can cause death or serious injury, or equipment damage. Ensure unauthorized persons cannot access or contact the device. Disconnect power before working. Do not use if the power supply is not correctly connected to earth.

PLEASE NOTE! ROTATING PARTS! AUTOMATIC RESTART!

Take measures to secure rotating parts against physical contact during operation, as they can be a source of danger.

CAUTION!

Before connecting, check the filter for damage. Carefully inspect power cables and plugs.

Please note:

• During installation, disconnect all device plugs from the power supply. Remove plugs of other equipment in contact with water.
• Never put hands in water before the plug is removed from the socket. This applies to all electrical equipment immersed or in contact with water.
• Keep out of reach of children before and during assembly. Suitable only for those aware of the device's dangers.
• Never try to stop the drum with your hands while it is rotating.
• Ensure the rinse pump always has sufficient water during operation; do not let it run dry.
• The drive motor and all electrical connections must not come into contact with water. If this occurs, ensure everything is thoroughly dry before reuse.
• The control and rinse pump may only be connected to an earthed socket equipped with a 30mA residual current device.

4. Usage of the Filter

Only use the filter when no body parts are in contact with the water. Always disconnect the filter from the socket before touching the water.

Compare electrical specifications on the type plate with the power supply connection. Ensure the device is connected to a socket with earth and a ground leak switch with a maximum residual current of 30 mA (DIN VDE 0100T739). Use only with a correctly installed socket.

Keep the plug and wiring dry. Protect cables to prevent damage and short-circuits.

THE ELECTRICAL WIRING AND/OR PLUGS MAY NOT BE CUT (THROUGH). DOING SO WILL CAUSE THE MANUFACTURER'S WARRANTY AND LIABILITY TO EXPIRE IMMEDIATELY.

Use only approved outdoor cables, installations, adapters, and extension cables with earthed plugs (DIN VDE 0620) and sufficient diameter. Replace damaged or broken wiring. Ensure the plug does not fall into or get wet; clean wet plugs with demineralised water and dry them. Protect plugs and cables from heat, oil, UV-light, and sharp corners. The manufacturer is not responsible for damage caused by incorrect installation or user carelessness.

Cables may not be altered or replaced. Electrical installations must comply with national and international requirements. Never open the control electronics casing or make technical modifications. Use only original parts and accessories. Only authorized dealers may perform repairs.

Never use the filter with liquids other than water.

5. Application Fields

The Bio-drums or drum filters are suitable for filtering fresh or slightly brackish water.

• Water temperature: 4-40 °C.
• Ambient temperature: 2 °C to +50 °C.
• Protection class Electronics: IP54.

6. Installation/Connection

Read the manual carefully before installation. Damage from failing to observe the manual is not covered by warranty.

When unpacking, check if all parts are complete and undamaged. Report any damage to your supplier within 24 hours. Check the filter for damage before use. Do not use a damaged filter; warranty and liability will expire if used while damaged.

⚠️ The filter must not be connected to the power supply during installation. Remove the plug and ensure the filter cannot be activated. To prevent injury, ensure hands/fingers cannot reach rotating parts when connected to power.

7. Commissioning of the Filter

NEVER USE THE DEVICE WITHOUT WATER FLOW.

☔️ KEEP DRY

The drum motor must be stored dry; otherwise, the warranty will be void.

7.1 Positioning of the Filter

Follow regulations below for safe operation and to prevent device damage.

• Ensure the substrate is levelled and sufficiently solid; a concrete slab is preferred.
• The drum motor must be installed in a dry place, or the warranty will expire.
• When checking the rinse pump or drum motor, the lid must always be closed. Never put hands in the filter or try to stop the drum.
• The rinse pump must always be below the water level before activation, to prevent irreparable damage from running dry or overheating. Damage from running dry is not covered by warranty.
• Electronics must be in a dry, well-ventilated space with temperatures between 2 and 30 °C. Higher temperatures can cause damage due to heat dissipation issues.
• Electronics contain switching components and must be placed in an interference-free room.
• Certain pumps or UV units may negatively affect electronics.
• In case of frost, protect the filter. If taken out of operation, empty all pipes. If operative, protect rinse water pipes against freezing.

Note: Damage from freezing water is not covered by warranty.

7.2 Connecting Gravity

For gravity flow, align the maximum water level with the drum. The maximum and minimum water levels are indicated inside the filter; aim to be between them, preferably close to the maximum. The filter has 110 mm entries and exits.

? For gravity installation, sufficient water feed is crucial for proper functioning!

Insufficient water supply risks the rinse pump running dry and frequent rinse cycle activation.

A rule of thumb is that approximately 10 m³/hour can be moved per 110 mm pipe in a gravity setup, depending on pipe length and height difference. In some cases, only 3 m³/hour may be moved.

Pay attention to maximum flow per pipe:

• The pond water level should not sink too much. A 1 cm drop can reduce flow by 1-2 m³/hour. Large fluctuations (evaporation, replenishment, rinsing) risk insufficient water supply.
• If the pump supplies more water than the filter receives, the drum empties, the sensor rises above the water level, triggering a rinse cycle.
• Long or curved supply pipes cause friction loss, reducing flow significantly below 10 m³/hour per pipe.
• Seal unused entries.

Drainage of dirt: The dirt is sprayed into the flushing channel via the mesh nozzles. This channel can connect directly to a sewer or drainage point.

Return to pond: The pump connects to the 110 mm drain. Use a flexible coupling for a good transit to your pump, which also reduces vibrations. Do not use a pump larger than recommended. Ensure sufficient water supply and that the dry running function is engaged (indicated on the Electronics box display).

7.3 Connecting the Pump-fed System

MPF drum filters and Bio-drums can also be connected as a pump-fed system. The pump supplies water to the filter. Unused exits must be sealed. Pump-fed systems decrease maximum capacity by up to 30%.

7.3.1 Assembly of Float

For pump-fed systems, the float must be assembled upside down in the drum section (at the inlet) 1st chamber.

? Safety Precaution: Remove the 2 caps of the upper sealed holes. In case of calamity, this allows unfiltered water to flow out, preventing water from being pumped directly into the flushing channel.

If the float is in the lowest position, the system is in standby. If it's in the highest position (floating), the process starts: drum rotates, rinse pump cleans the cloth for 14 seconds (standard).

If the float remains in the highest position with the water pump on, too little water flows away. The drum rinses for 40 seconds (standard), and electronics switch to dry-running protection.

7.3.2 Connection of Return to Pond

The return pipe should first go up to determine the desired height inside the filter. Avoid levels too low (affecting bio-filter material) or too high (causing high coil frequency). Adjust during operation. Start a rinse cycle when the water level difference before and after the drum is approx. 10-15 cm. Ensure the vertical section remains open to prevent tilting and pumping the filter dry.

To pump more water than a single 110 mm pipe can handle by gravity, create additional transits or use a wider diameter pipe for the return to the pond.

? Please note: The float must be installed in reverse for pump-fed systems. Remove the upper blue caps. If water rises in front of the drum filter (indicating dirt), the rinse cycle must activate. If the reversed float stays up, the system should deactivate after 40 seconds to prevent water flowing to the sewer and emptying the pond. Ensure the float is at the correct height for deactivation before water enters the flushing channel.

7.2.5 Flushing Frequency

Ensure flushing frequency is not too high. Initially, in a new system, frequency may be high as the pond is 'cleaned'. Warm weather can increase frequency due to more food and algae.

Other causes of high flushing frequency:

• Pond pump too large.
• Insufficient water supply (low pond level, poor supply system, long/few/undersized pipes).
• Float set too high.
• Clogged mesh (e.g., due to bacteria).
• Low rinse pump pressure or flow.

Float Positions:

• Float in 'normal' position: Pond pump is on.
• Float in 'rinse' position: Pond pump is on, drum rotates, rinse pump cleans cloth. If float stays here for 30 seconds, electronics switch to DRY-RUNNING MODE.

Diagrams and Visual Descriptions

The document contains diagrams illustrating various connections and components. These include:

• Page 8 & 9: Flow diagrams showing connections for UV units, water inlets ('INVOER/EINGANG/WATER IN'), water outlets ('UITVOER/AUSGANG/WATER OUT'), and waste/chute ('AFVOER/WASTECHUTE/ABFALL'). Specific connections are labelled for 32mm UV IN, 110mm inlets and outlets, and 25mm connections for flushing pump suction and pressure.
• Page 10: Shows the MPF Drum Controller and its connections for Motor (GERBOX), Flushing Pump (HP PUMP), and Pond Pump (CIRC PUMP). It also illustrates the connection of a float switch controller.
• Page 11: Details the MPF Controller display and buttons for manual flushing. It also shows the fuse locations and ratings (1A for Display, 3A for Pond Pump, 4A for Motor/Rinse Pump).
• Page 12: Illustrates connecting the drum filter motor to the control electronics and explains the function of different button presses on the controller, along with display status indicators (white, red, flashing red-white).
• Page 13: Shows float sensor positions (Gravity and Pumped) and their effect on rinsing. It also details the connection of the external rinse pump, including adapters for different pipe sizes and connection to the nozzle pipe.
• Page 14: Depicts float positions ('normal' and 'rinse') and their relation to pond pump status and the potential for entering DRY-RUNNING MODE.
• Page 15: Illustrates the assembly of the float for pump-fed systems and the connection of the return to the pond, including required water level differences.
• Page 16: Shows water level indicators for pump-fed systems, highlighting the point at which the filter needs to flush and the required water level decrease (10-15cm).
• Page 17: Explains water levels in Bio-drums and Drum filters, the process of filling with biological material, and troubleshooting for pump-fed systems (high return line, sensor contamination). It also shows the setup for gravity trickle systems requiring a level surface and maximum water level.

7.3 Connecting the pump-fed system

NOTE: Pump-fed systems have less capacity, potentially a 30% reduction. For example, a Biodrum 100 handles 50m³/h in gravity setup but only 35m³/h pump-fed. The biological part may not be completely filled, reducing biological material addition.

7.3.1 Assembly of float

For pump-fed systems, assemble the float upside down in the drum section (inlet) 1st chamber.

? Please note: The float must be installed in reverse. Remove the upper blue caps. If water rises in front of the drum filter, it indicates dirt, and the rinse cycle must activate. If the reversed float stays up, the system should deactivate after 40 seconds to prevent water flowing to the sewer and emptying the pond. Ensure the float is at the correct height for deactivation before water enters the flushing channel.

7.3.2 Connection of return to pond

The return after the filter should first go up to determine the desired height inside the filter. It should not be too low (affecting bio-filter material) or too high (causing high coil frequency). Adjust during operation. A rinse cycle must be started when the water level difference before and after the drum is approximately 10-15 cm. Ensure the vertical section remains open to prevent tilting action, causing the drum filter to be pumped dry.

To pump more water than a single 110 mm pipe can handle by gravity, create additional transits or use a wider diameter pipe for the return to the pond.

Water level indicators:

• Filter needs to flush at this point! IMPORTANT
• The water must decrease 10-15cm.
• Water level after end of flushing: 5-15cm, depending on flow/model.

Extra Information

Bio-drums: The water in the last (biological) chamber is at least 15 cm lower than shown in image 2, just before the drum filter rinses.

Drum filters 100 and 50: The incoming water column may not be more than 15 cm higher than the outgoing water column at the time of rinsing. If it is, too much water remains in the drum, potentially causing deformation.

Biological Material: You must fill the filter yourself with biological material. The drop plates (3X) are pre-screwed; unscrew them to place the biological filling. Screw all plates back on as they were tightened at the factory, or the warranty will be void.

Troubleshooting Pump-Fed Systems:

• If water rises in front of the drum filter (indicating dirt), the rinse cycle must activate. If the float goes up, a rinse cycle follows (approx. 20 seconds).
• If the float remains in the highest position (pond pump on), too little water flows from the filter. The drum rinses for 45 seconds (standard), and electronics switch to dry-running protection.
• If flushing frequency is too high or electronics repeatedly enter dry-running protection, check points under 7.2.5. Other potential causes in pump-fed systems include:
  • Return line too high.
  • Contamination of the sensor.

7.4 Placing for Gravity Trickle

Make sure the surface is level and firm; a concrete slab is preferred. The surface must remain level at all times, or the warranty will be void.

WATERLEVEL MUST BE AT THE MAX!!!

8. Maintenance and Cleaning

The filters are low maintenance. However, the following tasks are required for proper functioning:

• Check the correct functioning of the float every month.
• Perform a manual rinse every month and check nozzle spraying. Nozzles may clog or calcify. The rinse pump may also lose pressure. Clean nozzles if necessary.
• Clean the sieve element with a strong acid (e.g., 30-35% hydrochloric acid). Biofilm and calcium deposits may form, increasing rinse frequency. Observe safety regulations when using acids; wear protective clothing and safety goggles.

BYPASS: You can remove the blue caps in the front chamber during calamities (e.g., engine or steering issues) to continue using the filter without pre-filtering.

10.0 ONDERHOUD (Maintenance)

We hope you enjoy your drum filter purchase. Here are important maintenance instructions for optimal performance:

• Gearbox Oil: Once a month (or quarter), change or top up the oil in the engine gearbox. Regular oil changes extend product life and ensure intended function, preventing potential problems and ensuring reliability.
• Control Electronics: Check electronics for defects every 3 years. Electronics can wear out, reducing performance or causing malfunctions. Regular maintenance and device replacement ensure reliability. Professional inspection is recommended to identify and resolve issues promptly.
• Motor: We recommend checking the drum filter motor every three years for defects. Regular inspections help identify and correct problems. Consider engine replacement every five years, even if no issues are apparent, to ensure long-term reliability and prevent malfunctions. Our maintenance team can assist with planning checks and replacements.
• Silicone Seal: Regularly (at least monthly) lubricate the drum's silicone seal with MPF Lubricant. This keeps it smooth and elastic, extending its life and effectiveness. Contact MPF for information on maintenance and obtaining the correct lubricant.

Additional Maintenance

• Water SEAL: Replace the water seal between axle and engine at least every 2 years. This is crucial to prevent water entering the engine via the shaft, ensuring efficient function and preventing leakage.
• Float Check: Check the float regularly. It plays a crucial role in rinsing. We recommend replacing it every three years to ensure continued intended function. Regular checking and replacement help prevent malfunctions and ensure trouble-free operation. Contact MPF for more information on maintenance and replacement parts.
• Motor Storage: Always store the drum filter motor in a dry place. Exposure to wet/rainy conditions can cause serious damage and shorten the product's life. Ensure a hood is always mounted over the engine to prevent rainwater entry. Ignoring this may void the warranty.

9. Technical Specifications

• Rinse pump external: Oase ProMax Garden Classic 3000
  • Pressure: 4.1 bar
  • Power (P): 600W
  • Max Flow (Qmax): 3000 l/h
  • Voltage (U): 220-230V
• Rinse pump internal:
  • Pressure: 6 bar
  • Power (P): 1000W
  • Max Flow (Qmax): 3500 l/u
  • Voltage (U): 220-230V
• Electronics (Makoi Controller):
  • IP Rating: IP55
  • Max. capacity: 3100W
  • Pressure: 220V/50-60Hz
• Electronics (Siemens Logo8):
  • IP Rating: IP54
  • Max. capacity per side: 800 W
  • Voltage: 220 V/50-60 Hz

10. Declaration of Distributor

In addition to this manual, the general terms of MPF B.V. apply to any claims against MPF regarding the products herein. Specifications may vary due to technical improvements.

Should this filter not meet your requirements, contact the dealer where you purchased it.

Makoi Pondfiltration / MPF
Duurzaamheidstraat 19A
8094SC Hattemerbroek
T: +3138 200 1556
Info@mp-f.com
www.makoipondfiltration.com