1, quartz sand, activated carbon filter according to the raw water quality to determine the cleaning cycle: raw water for the tap water is generally a week (calculated on the basis of 7 days) flushing once, the raw water for the groundwater, river water, well water and other poor water quality is generally three days time flushing, to ensure that the pre-processor deposition of sediment, impurities, particles in a timely manner to exclude.
2, the security filter import and export differential pressure rises (& gt; 0.06Mpa), the filter must be replaced to ensure the normal operation of the RO device. Recommendation: Every three days must be removed from the filter element to check and clean. Filter replacement cycle depends on the quality of its water intake, generally replaced every 15 days.
3, softening resin tank should avoid high temperature exposure, every 15 days with regeneration liquid for resin regeneration.
Two, reverse osmosis unit maintenance:
1, regular regular records of RO device various operating parameters. Recommendation: every two hours to record the RO unit of various operating parameters.
2, with the growth of operating time, the membrane surface will be attached to the sediment, affecting the water permeability, it is necessary to regularly clean the RO element. If you find that the pressure of each membrane element in the component is greater than 0.1Mpa to be immediately cleaned (cleaning by the cleaning system to complete). According to different pollution conditions, targeted treatment measures. Specific cleaning methods are detailed in the "reverse osmosis membrane chemical cleaning methods".
3, regular periodic inspection and testing of conductivity meter and the pressure gauge, so that the normal and accurate work.
4, regular periodic inspection of the electrical control system to ensure that the equipment runs normally.
5, regular periodic inspection of high-pressure pumps and RO pre-pump, according to the maintenance manual in a timely manner to replace the lubricating oil.
Three: equipment downtime downtime maintenance:
For equipment downtime (national holidays, seasonal shutdowns, plant maintenance, etc.), reverse osmosis unit (including the electronic control system, reverse osmosis membranes) maintenance points are as follows:
1, RO device short-term shutdown (not more than three days), every day, you must use the security filter flushed for 30 minutes and ensure that the RO module The RO module is full of filtered water.
2, RO device such as long-term shutdown (more than three days), should be used 1% formaldehyde solution, full of RO components, and then close all the valves, and check once a month. In summer, control the ambient temperature to prevent mold, winter anti-freezing, if necessary, add 10-20% glycerin.
3, save the water preferably with reverse osmosis fresh water, formaldehyde application of chemical reagent products.
4, when the reverse osmosis system composed of composite membranes to be suspended for more than a week, then the system should be soaked with 1% NaHSO3 solution to prevent bacteria from multiplying on the membrane surface.