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 10 of 25 ro809-812-815_mi-r0.doc - r. 05. Control panelThe control panel QE, handled by a logical programmer, controls the automatic and/ormanual working of the whole system.For safety sake, when the high pressure pump P is on working, the inlet valve VI is open(except during the flushing with RO processed water, during which the valve VIF is open), bothautomatic and manual working as well. Hence, in this manual, any time the working of the highpressure pump P is mentioned, it is understood that the inlet valve VI is open,The starting of the pump is some seconds delayed than the opening of the valve VI.5.1. Commands and visualizations (see diagram FRONT OF CONTROL PANEL)The instruments available on the control panel are :CONDUCTIVITY-METER the instrument continuously shows the conductivity of the treatedwater (permeate).When the conductivity of treated water overpasses the set-point value(set-point K2), the high conductivity alarm is switched on.LOGICALPROGRAMMER LOGOthe programmer that handles the logical working of the unit.Its display shows the status of the inputs and outputs and allows tomodify the pre-set time of the used timers (see special chapter fordetails).The commands available on the front of control panel QE are :"EMERGENCY STOP " It is placed on the top side of the control panel; pushing the buttonany working of the system is blocked. To re-start the system, turncounter clock-wise the button, for approx. 30º.SELECTOR "MODE"“AUT-RESET-MAN”it controls the working of the systemon “AUT” the RO system supplies water according to the levels mounted insidethe storage tank of permeate. The correct working requires also theexternal enabling signal (on terminals 9 and 10, timer or jumper) andthe one of the minimum pressure switch PCon “MAN” the pump P works and valve VI opens, regardless of any enablingsignalson “RESET” the blocks caused by the alarms are cancelled; the system is notrunning.BUTTON "FLUSHING" It is connected to the working of the flushing solenoid valve EF (andVIF if installed). When the button is pressed, the valves open; whenthe button is released, the valves close.The synoptical panel shows graphically the installed items; when one of them is activated,the correspondent led is ON. For the pressure switch, when its led is ON, it means that thepressure overpasses the adjusted set-point.For the solenoid valve EF, when its led is ON, it is also understood that the valve VIF, ifinstalled, is open. |
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