MODEL F71B/F71G/F67C/F67G/N75A/N75B
4
No operations to buttons on the controller within 1 minute, button
lock indicator light on which represent buttons are locked. Before
operation，press and hold the “ ”and“ ” buttons for 5 seconds to
unlock. This function can avoid incorrect operation.
Rinsing frequency
It could set up multiple rinsing times, which means several times of
backwash and fast rinse but one time of service. It is much better for
cleaning the filter materials.
There are two kinds of time clock types
Time clock type valve can be chosen to be service by hours ,by
dialing the red switch on main control board to “1” (Refer to the Figure
3-1). Pointing to “ON” mean the time clock type service by days; “1”
means the time clock type service by hours.(Attention: after dialing the
switch, please restart the power)
Interlock function
It has a function of interlock to realize only one valve in rinsing, but
the other valves are in service while there are several valves parallel in
system. In multi-steps treatment systems such as RO pre-treatment,
when several valves are in series, there is only one valve in rinsing to
ensure pass water all the times while different valves in
rinsing.(Application refer to Figure 3-10)
Signal output
There is a signal output connector on main control board. It is for
controlling external wiring ( Refer to Figure from Figure3-2 to Figure 3-9).
There are two kinds of output modes. b-01 Mode: Turn on start of
regeneration and shut off end of regeneration; b-02 Mode: Signal
available only intervals of rinsing cycles and In service.
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