Summary of Contents for Flocell XFM 900
- Page 1 FLOCELL XFM FILTERS INSTALLATION & OPERATING MANUAL TERMS & CONDITIONS PLEASE READ INSTRUCTIONS THOROUGHLY BEFORE INSTALLATION AND COMMISSIONING...
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Page 2: Table Of Contents
Contents Introduction Dimensions Operational design Specifications & Flow Rates XFM Filter Installation Media Installation Operation Single Filters Dual Filters Series Filters Cleaning Procedures Single Filters Dual Filters Series Filters Maximising efficiency / performance Troubleshooting... -
Page 3: Introduction
Introduction Flocell XFM filters are high performance, high capacity filtration units designed to capture large quantities of suspended particles and are not subject to the typical restrictions of particulate filters. Low cleaning frequency Due to very high retention capacity, cleaning cycles are far less frequent than with other technologies therefore increasing operational efficiencies. - Page 4 Dimensions (in mm)
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Page 5: Operational Design
(see also Maximizing Efficiency section). Flocell XFM filters upflow units where inlet water is admitted to the filter body via the lower tank connection. This connection is also used for filtrate removal after a cleaning cycle. -
Page 6: Specifications & Flow Rates
1200 l 42.4 CF Media Flocell XFM filters use a proprietary open-cell media that has been optimised for fine particle mechanical filtration. The table below shows expected performance as a function of the particles present, this can be used for mass balance calculations with the appropriate... -
Page 7: Installation
Installation NOTE: Filters are delivered conveniently packed and due to their weight, size and difficulties arising in placing them, we recommend that their handling and movement be done with mechanical apparatus (forklifts, cranes, etc.). XFM filters should be installed as close as possible to the inlet supply and preferably at a level of 0.50 metres below the surface of the water in a settlement vessel or sump. - Page 8 The filter must be installed on a flat, level base, on firm ground or equivalent. Ensure the ground will not subside and strain pipework. We recommend using a flat solid concrete surface as a base large enough for the filter to be installed. Under normal operating conditions the filter will not clog or block but care must be taken to ensure no gross solids are admitted to the unit.
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Page 9: Operation
Operation The installed air blower must be sited above the filter body or a non-return valve installed before the air-supply to limit the potential for accidental water ingress to the blower • Before working on the filter or valves, make sure the pump is switched off and the filter is de-pressurised. -
Page 10: Single Filters
Single Filters OutletValve Air supply Valve Waste Valve Inlet Valve Valve In single filter situations, the inlet supply is connected to the lower tank connector with an isolation valve. The outlet is connected to the upper connector with an isolation valve. In situations where continuous supply is encountered, a bypass should be installed back to the ‘dirty’... - Page 11 Parallel Filters In dual or any multiple parallel filter situations, the inlet supplies are connected to the lower tank connectors via a manifold with isolation valves to allow flow balancing. Either a manifolded single or individual connections to the main inlet line are possible but in the case of an single connection, individual balancing valves are required for optimal performance.
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Page 12: Series Filters
Series Filters In series filter situations, the main inlet supply is connected to one side of the T fitting on the lower tank connectors of the filters with an isolation valve to allow for cleaning. The outlet of the first (and subsequent) filter(s) is connected to the inlet side of the T fitting on the lower tank connector(s). -
Page 13: Cleaning Procedures
Cleaning Procedures It is imperative that inlet valve is always closed before outlet valve to prevent excess pressure. Single / Parallel Filters To clean filter, firstly isolate filter by closing Inlet and Outlet Valves. Open Waste Valve and send water to waste for approximately 1 minute to allow an air space to form at the top of the filter. - Page 14 After 1 minute, close Waste Valve and open Air Supply Valve and turn on Air Blower. Allow 10 minutes for the media to circulate before turning off Air Blower and then closing Air Supply Valve. Finally, send filter contents to waste by opening Waste Valve until filter body is empty.
- Page 15 Parallel Filters To clean filters installed in parallel, firstly isolate filters by closing Inlet and Outlet Valves. Open Waste Valves and send water to waste for approximately 1 minute to allow an air space to form at the top of the filter.
- Page 16 After 1 minute, close Waste Valves and open Air Supply Valve and turn on Air Blower. Allow 10 minutes for the media to circulate. Finally, send filter contents to waste by opening Waste Valves until filter body is empty.
- Page 17 To refill filter turn off Air Supply Valve and close Waste Valves. Open Inlet and Outlet valves. For optimal efficiency, undertake a second cleaning cycle once filter refilled.
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Page 18: Series Filters
Series Filters In series operation, filters can be cleaned and isolated individually as required. In normal operations, the downstream filter will require cleaning approximately 50% less frequently than the upstream filter. To clean filter 2 (as primary filter) isolate by opening Upstream Mainline Valve to divert flow then close Inlet then Outlet Valves of Filter 2. - Page 19 Close Filter 2 Waste Valve and open Filter 2 Air Supply Valve, turn on Filter 2 Air Blower and allow media to circulate for 10 minutes. Open Filter 2 Waste Valve and allow filter to empty to waste. When Filter 2 is empty, close Filter 2 Waste Valve. Close Filter 2 Air Supply Valve and turn off Filter 2 Air Blower.
- Page 20 To refill Filter 2 and bring back on line, close Filter 2 Waste Valve, open Filter 2 Inlet and Outlet Valves close Upstream Mainline Valve. Filter 1 To clean filter 1 isolate by opening Downstream Mainline Valve then closing Filter 1 Inlet then Outlet Valves.
- Page 21 Open Filter 1 Waste Valve for 1 minute to allow air space creation for media circulation. Close Filter 1 Waste Valve and turn on Filter 1 Air Blower. Open Filter 1 Air Supply Valve and allow media to circulate for 10 minutes.
- Page 22 Open Filter 1 Waste Valve and allow filter to empty to waste. To refill Filter 1 and bring back on line, close Filter 1 Air Supply Valve and turn off Filter 1 Air Blower. Close Filter 1 Waste Valve, close Main Downstream Outlet valve, open Filter 1 Inlet and Outlet valves.
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Page 23: Maximising Efficiency / Performance
Maximising efficiency / performance Gross Solids Where situation may mean that solids could enter the filter it is recommended that extra precautions are taken to ensure any potential blockage can be remedied. Pre-screening from receiving waterbody is absolutely vital to ensure the filter footvalve remains functional. -
Page 24: Troubleshooting
Troubleshooting No inlet flow Check Inlet Valve(s) open Check Outlet Valve(s) open Check Inlet pump is running if pumped supply No outlet flow Check Outlet Valve is open Check Inlet Valve open Check Inlet pump is running if pumped supply Ensure overflow is open.