The ‘Pearl’ cartridge is a world-beating seven-stage purification system. In order to ensure optimum filtration, sufficient contact time is needed between water and the cartridge. A flow rate of 1.5 to 2 litres per minute is therefore recommended.
Check that you have removed
all the wrapping from a new filter cartridge
During periods of high water demand the pressure may fall and the filter may be starved of water flow. Avoid running a bath, shower or appliance connected to same line on which your FRESH WATER FILTER system is connected.
• Check pressure. Flow is directly proportionate to pressure. Find the approximate mains water pressure by running the unit without a cartridge (see table below)
FW1000 WATER FLOW rate approx.
Without a ‘pearl’ Cartridge.
Standard ‘Touch-flo’ tap used |
PRESSURE |
Time per litre |
1 BAR |
30 SECS |
1.5 BAR |
26 SECS |
2 BAR |
22 SECS |
2.5 BAR |
18 SECS |
3 BAR |
16 SECS |
3.5 BAR |
14 SECS |
4 BAR |
12 SECS |
Expected Water flow with
‘pearl’ cartridge |
1 BAR |
120 secs |
1.5 BAR |
100 secs |
2 BAR |
80 secs |
2.5 BAR |
60 secs |
3 BAR |
45 secs |
3.5 BAR |
37 secs |
4 BAR |
30 secs |
• Remove cartridge and brush ceramic surface whilst running it under cold water (use stainless steel scourer)
• If the flow does not return to its former level immediately after cleaning correctly the ceramic cartridge will probably need replacement. BUY
• Check that the line piercing valve is fully opened, or if there is low flow at the time of installation check that the line piercing valve instructions were carried out correctly and that the water line has been pierced fully. (Close the line piercing valve fully and then open it up again).
• The filter system needs a minimum pressure of 1.4 Bar (approximately 20 p.s.i.) to work. As a general rule, the higher the pressure generally the greater the water flow will be. If the pressure is inadequate a pump may be needed or alternative cartridge contact us. BUY
• Clear blockage by a process of elimination Start at the water source and check for flow and pressure at each fitting until you get to the point where there is a reduction
• Pre-filter may be advisable if the sediment builds up very often Add additional housing with prefilter Or clean cartridge frequently (i.e. every 2 weeks) call 020 8558 7495
• Add additional washer (GSP-07).to the thread of the cartridge mount
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