MODEL F71B/F71G/F67C/F67G/N75A/N75B
22
Figure 3-6 Wiring of Liquid Level Controller
Controlling 220V Inlet Pump
Function:
When valve in service status, if water tank is short of water, start up
pump, but if water tank has enough water, the switch of liquid level
controller is closed, so pump doesn’t work.
When valve in backwash cycle, inlet always has water no matter
what is water condition in water tank. As Runxin valve no water pass
outlet in regeneration cycle, it ensure no water fill into brine tank.
A liquid switch at the top opening O well or in middle water tank in
RO system protect pump from working without water in case of out of
raw water.
3) Liquid Level Switch in Water Tank Controls Inlet pump (Three-phase)
(Set b-01)
The principle is the same as for two-phase’s, only change
single-phase pump into three-phase motor, and use an AC
contactor( Refer to Figure 3-7)