Control principle of direct drinking water equipment

1； Manual control program operation; When the button switch is selected in manual mode, each button switch can start or close its own water pump, which is not affected by the control of pressure controller and liquid level switch. Manual cleaning is used when cleaning mechanical filter, activated carbon filter and RO mainframe.

2； Automatic control program operation; Select the button switch to turn to the automatic state to automatically start the source water pump (open the water inlet valve). After a delay of 5-1 seconds (if a low-pressure controller inputs a signal, it will automatically alarm and stop), automatically start the high-pressure pump, open the flush valve, and close the flush valve after 1 seconds. Automation is used in production. Attention; Start the low-pressure controller of the high-pressure pump. If there is a signal input, close the whole set of equipment and give a low-pressure alarm).

3； System automatically controls shutdown and startup

(1); Turn off the high-pressure pump and the source water pump (inlet valve) after the water level of the pure water tank reaches a high level.

（2）； When the water level of the pure water tank reaches the middle level, automatically start the source water pump (water inlet valve), and after a delay of 5-1 seconds (if a low-pressure controller receives the signal, it will automatically alarm and stop), automatically start the high-pressure pump, open the flushing valve, and close the flushing valve after 1 seconds.