WP440L-Series Reverse Osmosis System
Installation Instructions and User Manual
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System Operation
I-ROC150S RO System Controller 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 STANDBY. 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.
Illustration 9 - Front Control Panel
Table 4 - Front Control Panel Description
Feature
Description
Display
Shows status of the system.
Alarm Lamp
Flashes when fault causes an RO system shut-down. ON steady when a set-point is
exceeded that does not cause an RO system shut-down.
Power Key
Places controller in operating or standby mode.
Left Arrow Key
Scrolls through set-points starting with first set-point.
Right Arrow Key
Scrolls through set-points starting with last set-point.
Up Arrow Key
Increases value of set-point.
Down Arrow Key
Decreases value of set-point.
Enter Key
Confirms entry of new set-point value.
Alarm Silence/ Reset Key
Push once for alarm silence and twice to reset the system after a shutdown has
occurred.
General Operation
Front Panel Controls and Indicator
