This document describes the PB International UFK/UFW series, which are ultrafiltration (UF) and ultrafiltration with forward flush (UFW) systems designed for water purification. These devices are intended to provide clean and safe drinking water by removing small undissolved particles, such as bacteria, from the water.
Function Description
The UFK/UFW series systems utilize ultrafiltration, a membrane-based technique that filters water through pores of 0.015 to 0.03 micrometers (approximately 0.6 to 1.2 micro inch). Water is pressed through these pores, and the reduction of bacteria achieved by this technique is 99.9999% (log 6). The UFW models are equipped with an automatic forward flush function, which rinses trapped bacteria from the membranes into the sewer, ensuring continuous performance.
The system operates by separating the upstream water supply (feed) from the downstream water (permeate). All particles greater than 0.03 µm are retained by the filter membranes. The captured particles are automatically washed away to the drain, especially in the UFW models.
Important Technical Specifications
The UFK/UFW series offers various models with different capacities and specifications:
General Specifications:
- Connections: ½” BSP female threaded.
- Capacity (gal/min): See filter module for specifics.
- Pressure loss (bar): 0.8 (~9PSI).
- Power supply: See coil for specifics.
- Electrical power: 9W.
- Pore size: 0.015 – 0.03 micron (~0.6 to 1.2 microinch).
- Max temperature: 40°C (104°F).
- Material: PVC-U (UFK) / PVC-C (UFW).
- Supply pressure min: 2 bar (~29 PSI).
- Medium: Drinking water.
Filter Module Specifics (Examples):
- UFK 50-510: ½” BSP female threaded, 0.3 m3/h capacity at 16°C (61°F).
- UFK 63-510: ¾” BSP female threaded, 0.5 m3/h capacity at 16°C (61°F).
- UFK 160-1000: 1” BSP female threaded, 5.0 m3/h capacity at 16°C (61°F).
- UFW 50-510: ½” BSP female threaded, 0.4 m3/h capacity at 30°C (86°F).
- UFW 63-510: ¾” BSP female threaded, 0.6 m3/h capacity at 30°C (86°F).
- UFW 160-1000: 1” BSP female threaded, 8.4 m3/h capacity at 30°C (86°F).
Electrical Components:
- Supply voltage: See the coil.
- Nominal power: 5W.
- Maximum power: 9W.
- Degree of protection: IP65.
- Power supply unit: Socket outlet.
The product is equipped with a plug (2 meters / 6 feet cable length) and suitable for a power supply with live/neutral/earth connections.
Usage Features
Installation:
- Installation must be performed by an authorized plumber in accordance with local and national regulations.
- The filter should be installed so that all the water is treated in the downstream installation.
- The system can be placed immediately after the water meter and/or pump at the beginning of the pipeline network.
- The installation must be placed in a dry and frost-free area.
- The equipment must be securely mounted, preferably on a wall.
- The UFK/UFW can be positioned horizontally, vertically, as well as lying down.
- Connections involve using FTPE or FTPE sealing tape or sealing wire. Hemp sealing material is not permitted. BSP threaded connections are used.
- The drain line (for example, a drain) of a device must be provided with a free range visibility according to the figure and table below.
- The discharge pipe must have an air gap to the sewer drain.
Commissioning:
- Ensure the voltage indicated on the appliance corresponds to the local main voltage.
- Check that the connections are secure.
- Check whether the water supply is of drinking quality.
- Ensure the supply pressure of the water is at least 2 bar (~29PSI) and up to 6 bar (~87PSI).
- Check the wiring of the equipment.
- Open the main valve of the drinking water system.
- Slowly open all manual valves halfway.
- Allow the filter to slowly fill with water.
- Turn the manual valve fully open when the filters are completely filled.
- Ensure that the feed lines and the drain are installed correctly.
- Visually inspect the equipment for leaks and/or lack of water flow.
- Plug the equipment in the grounded outlet.
- The product starts immediately with the flushing and venting of the filter.
- The PB filter elements contain Glycerine and sodium sulphate for conservation. Before the appliance is fully operational it should be flushed, for at least 10 minutes, to remove the above mentioned substances.
- Turn the nearest downstream tap (from the installation) open to flush the system for at least 10 minutes.
- Carry out a complete cleaning and/or disinfecting of the equipment and the whole downstream installation to create a hygienic baseline.
- Flushing out the chemicals from the drinking water system must be done with filtered water.
- The disinfectant and specified flushing time are recommended by the manufacturer and should be followed. The flushing shall be done until the presence of disinfectants is no longer detectable.
Settings:
- The control of the equipment is set to an average water quality.
- Rinsing time (forward flush): 5 seconds.
- Rinsing frequency: 4 hours.
- The settings can be adjusted in consultation with the supplier.
Maintenance Features
General Maintenance:
- To ensure the correct operation of the equipment, it should be at least serviced annually by a service technician authorized by the manufacturer.
- Cleaning and disinfection of the filter modules.
- Checking the operation of the equipment.
- Monitoring the operation and integrity of the filter modules.
- A maintenance logbook is provided to record down any malfunctions and/or defects.
Troubleshooting (Problems and Malfunctions):
- No water pressure at the taps:
- Possible causes: Supply pressure of your water provider is too low; Permeate pressure is too low (less than 0.5 bar (~7PSI)).
- Action: Check the supply pressure; Contact your water provider; Place a pressure-boosting system.
- Less water pressure at the taps:
- Possible causes: Capacity reduction due to pollution; Supply pressure is too low (less than 1.5 bar (~22PSI)).
- Action: Allow a thorough cleaning to remove all micro contamination; Check the supply pressure; Contact your water provider; A pressure-boosting system might be advisable.
- Pump in failure:
- Possible causes: Filter installation is mounted BEFORE the pump; Supply pressure of your water provider is too low.
- Action: Place the pump in front of the filter installation; Check the supply pressure; Contact your water provider.
Handling Malfunctions:
- Never open the by-pass without consulting the manufacturer or an authorized party.
- Opening of the by-pass interrupts the physical barrier.
- Let the supplier repair the equipment.
- If physical bacteriological barrier fails, assume norm compliances of bacteria are exceeded within the downstream installation.
- Take the number of water samples as prescribed in the management concept to show possible infection.
- Immediately after the failure of the barrier.
- 1 month after the failure of the barrier.
- 3 months after the failure of the barrier.
Actions in Case of Power Failure:
- Failure of power supply has no adverse effect on the functioning of the product.
- There is still safe water in the distribution system.
- However, the flushing function does not work any longer.
- It is important to note that the power failure is solved in a timely manner to ensure the correct operation of the filters.
- The installation will start flushing immediately after the power is switched on again and no further actions are deemed necessary.
- When the system has been offline for more than a week without power, contact your supplier first.
Warranty:
- The equipment has a one year manufacturer’s warranty.
- The warranty applies to components.
- The warranty period is 1 year on material and/or workmanship.
- The warranty begins on the day of delivery.
- Incorrect use and/or use of non-original parts will void any warranty.
- In case of a defect, the manufacturer will assess the cause of the defect.
- The warranty on the equipment is not applicable for contamination and defect of the membranes by poor water supply and external factors.
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