Nobel RO 809 /E Instruction Manual
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Contents
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REVERSE OSMOSIS SYSTEMS RO 809-812-815/E - INSTRUCTIONS MANUALs.r.l.Milano - ITALY Page 14 of 25 ro809-812-815_mi-r0.doc - r. 05.2.4. How to use the function buttons of the programmerThe 4 buttons can have special functions if enabled by the programmer for thesepurposes.Proceed as follows to use them:• push several times the button until the notice ESC+C…is visualized on the display.• push and keep pushed the button ESC and immediately after that the desired functionbutton ()WARNING : by pushing the button ESC and not the function button within 2 seconds, thedisplay skips to the visualization of modification menu; release and then pushagain the button ESC to go back to visualization ESC+C…5.3. Logic of working5.3.1. LevelsWhether level switches are installed on the storage tank and are connected to the controlboard, as previously mentioned, the stop and starting of the high pressure pump P isautomatically controlled by the medium-maximum level switches.Whether only one level switch ON-OFF is available, it is connected as a max level (LH); itmeans that the closing of the contact stops the pump P.It is allowed to manually force the start of water supplying, even if the level mark is notbelow the threshold LL, by pushing the function button of the programmer.Proceed as follows to use the function buttons (see also the chapter “ How to use thefunction buttons of the programmer”)• push several times the button until the notice ESC+C…is visualized on the display.• push and keep pushed the button ESC and immediately after that the desired functionbutton ()WARNING • by pushing the button ESC and not the function button within 2 seconds,the display skips to the visualization of modification menu scelta; releaseand then push again the button ESC to go back to visualization ESC+C…The water supplying will automatically stop when the water reached the max level LH.In order to stop the working of the pump before that the level is reached, featuring theflushing, push the function button same way as per above description.In order to stop the working of the pump before that the level is reached, but not featuring theflushing, turn temporarly the mode selector on “RESET” position.The visualization of "NO WATER REQUEST” on the display of the programmerindicates that there is not request of water supplying by level switches.The sequence of automatic start-stop of the water supplying, driven by level switches, is thefollowing :• water supplying request• opening inlet valve VI• wait …(factory set 5 seconds)• start working of pump P• water supplying …..stop water supplying request• closing of valve VI (only if valve VIF is installed)• opening flushing valves EF (and VIF, if installed) for the pre-se time• switching off P, closing VI, EF (and VIF, if installed) |
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