BS/EN 14055-2018 pdf download.WC and urinal flushing cisterns.
6.10.4.1.2 Calibrated measuring container.
6.10.4.1.3 Fluid level sensing devices.
6.10.4.1.4 Electronic timer.
6.10.4.1.5 Water supply controlled by a stop valve,
6.10.4.1.6 Powersupply.
6.10.4.2 Procedure
Set the dual-flush controller or setting, if provided, to the MI-flush volume in accordance with the manufacturer’s instructions. Connect the water supply to the flushing cistern and fill to the marked water line. Shut ofT the water supply, unless essential for the normal operation of the flushing device.
Where a water supply is essential for the normal operation of the device, it is recommended to maintain the supply at a hydraulic pressure of (0,15 ± 0,01) MPa ((1.5 ± 0,1) bar) or the minimum required to operate the device, whichever is the greater.
Operate the flushing device completing one flushing cycle. On completion of the flush, using the calibrated measuring container, add 0,5 I of water to the flushing cistern. Locate and position a fluid sensing device at the water level in the flushing cistern. Using the calibrated measuring container, add further water to the flushing cistern equivalent to the volume of full-flush recorded in 6.10.3.3 less 1,0 I. Locate and position a second fluid sensing device at the water level in the flushing cistern. Add further water to the cistern up to the marked water level for the full-flush volume. Connect the two fluid level sensing devices to the electronic timer and connect to the power supply. Operate the flushing device and, on completion of the flush, record the time taken to discharge the volume of water between the fluid level sensing devices as displayed on the timer. Repeat the procedure a further four times.
If the flushing device is provided with a reduced flush facility, shut off the water and power supplies, and operate the flushing mechanism. Using the calibrated container, add to the flushing Cistern a volume of water equivalent to the difference between the full-flush volume and reduced-flush volume as recorded In 6.10.3.3. Add a further 0,5 I. Locate and position a fluid level sensing device at the water level in the flushing cistern. Using the calibrated measuring container add further water to the flushing cistern until it is filled to a volume equivalent to the volume of full flush recorded in 6.10.3.3 less 1,0 I. Locate and position a second fluid sensing device at this water level in the flushing cistern. Add further water to the flushing cistern, up to the marked water level for the full-flush volume recorded in 6.10.3.3. Turn on the power supply. Set the dual-flush controller or setting to the reduced-flush volume in accordance with the manufacturer’s instructions. Operate the flushing device and, on completion of the flush, record the time taken to discharge the volume of water between the fluid level sensing devices as displayed on the timer. Repeat the procedure a further four times.
6.10.5 Physical endurance and leakage test of flushing device
6.10.5.1 Test apparatus
6.10.5.1.1 Flushing cistern, complete with fitments including flushing device, flush pipe and cover, installed in accordance with the manufacturer’s instructions.
6.10.5.1.2 Means of operating the flushing limiter activator automatically in accordance with the manufacturer’s instructions.
6.10.5.1.3 Water supply maintained at a hydraulic pressure of (0,15 ± 0,01) MPa ((1,5 ± 0,1) bar), or the minimum pressure required to operate the flushing device whichever is the greater; having maintained water hardness not greater than the range (230 ± 20) ppm as calcium carbonate (CaCO1) during the course of the test.
6.10.5.1.4 Paper of a type which changes colour when wet.
6.10.5.2 Procedure
Connect the water supply. For a single flush flushing device, operate the flushing device and, if appropriate, allow the flushing cistern to re-fill. Carry out the long-term leak test. Three drops or more observed on the paper shall be considered a leak. Initiate automatic operation of the flushing device. Carry out the short-term leakage test and inspect the flushing device after a further 2, 5, 10, 50, 100, 500, 1 000, 10 000 and every subsequent 10 000 cycles. If a leak is detected, the leak test interval, but not the test itself, shall re-start (e.g. the short-term leak test shall be undertaken after a further 1, 2, 5, 10, etc. cycles). Continue until 200 000 test cycles have been completed, and then subject the flushing device to the long-term leak test. If. at any point during the test, three leaks have been detected, the test terminates and four further flushing devices shall be subjected to the same test, which again terminates if three leaks have been detected for any one of the flushing devices.
For flushing devices with reduced flush option operate the flushing device for a full flush and, if appropriate, allow the cistern to re-fill. Carry out the long-term leak test. Three drops or more observed on the paper shall be considered a leak The test then continues with the sequence three reduced flushes activated followed by a maximum flush. The flushing device shall be subject to the short-term leak test after 2, 5, 10, 50, 100, 500. 1 000, 10 000 and every subsequent 10 000 flushes (maximum and reduced flushes each counting as one flush). If a leak is detected, the leak test interval, but not the test itself, shall re-start (e.g. the short-term leak test shall be undertaken after a further 1, 2, 5, 10, etc. cycles). Continue until 200 000 test cycles have been completed, and then subject the flushing device to the long-term leak test. If at any point during the test, three leaks have been detected, the test terminates and four further flushing devices shall be subjected to the same test, which again terminates if three leaks have been detected for any one of the flushing devices.BS/EN 14055-2018 pdf download.
BS/EN 14055-2018 pdf download
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