Installation and Service Manual – L Series Reverse Osmosis System
Systems and Components
Membranes
,
Filters
,
Chemicals
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Page 13
System Operation
Series S100 RO System Controller Operation
General Operation
The unit has 2 modes of operation, a standby mode and an operating mode. In the standby mode, the unit is effectively
off. All outputs are turned off and the display shows OFF. In the operating mode, the unit operates automatically. All inputs
are monitored and the outputs are controlled accordingly. Pressing the Power key will toggle the unit from standby to
operate or from operate to standby. If power is removed from the unit, when power is reapplied, the unit will restart in the
mode it was in when power was removed.
1.
LED Display:
Shows status of system and water quality
2.
Status LED:
Shows operating status of the unit.
3.
Water Quality LED:
Green if OK, Red if above the limit.
4.
Power Key:
Places the controller in operating or standby
mode.
5.
Setpoint Key:
Places display in mode to display current
setpoint.
6.
SP
: Setpoint adjustment screw.
7.
CAL:
Callibration adjustment screw.
Display and Status Indicators
The display is a 3 digit display. System operating status, the TDS reading and the TDS setpoint are shown on this display.
A red/green LED indicates the system status in conjunction with the display. Refer to Table 1 for the description of the
operation of the display and LED.
Table 1
Condition
Display
Status LED
RO Off
OFF
RO Start Delay
- - -
RO Operating
Steady Green
Tank Full
FUL
Tank Full Restart
FUL
Slow Flash Green
Condition
Display
Status LED
Pretreat Lockout
PL
Flush FLS
Pressure Fault
PF
Flashing Red
PF Auto Reset
PF
PF Auto Retry
PF
Steady Red
RO Start Delay
When the controller is placed in the operating mode or restarts from a shut down condition, the inlet valve will open and a
5 second time delay will start. During the delay, “- - -“ will show on the water quality display. After this delay, the RO pump
will start. The water quality display will now show the current water quality. The status lamp will show steady green.
