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3. RO Controller Programming
The controller has 2 separate user-selectable sets of settings for configuring the RO. The factory
default settings are shown below. The settings are identical except for variations in the flush behavior.
Program 1, No Flush (Standard)
Program 2, High Pressure Flush (Optional)
See “DIP Switch Settings” for instructions on how to select these programs
Parameter
Value
Program 1
Program 2
Tank Level Switch delay (actuation and de-actuation)
Seconds
2
2
Pressure Switch delay (actuation and de-actuation)
Seconds
2
2
Pretreat Switch delay (actuation and de-actuation)
Seconds
2
2
Pump start delay
Seconds
10
10
Inlet Solenoid stop delay
Seconds
1
1
Pump start retry interval (restart delay after LP fault)
Seconds
60
60
Low pressure fault shutdown, # of faults
faults
5
5
Low pressure fault shutdown, time period to count faults
Minutes
10
10
Low pressure fault shutdown, reset after shutdown
Minutes
60
60
Low pressure timeout fault
Seconds
60
60
Flush Behavior
No Flush
High
Pressure
Startup Flush:
Minutes from last flush
Minutes
0
0
Startup Flush:
Duration
Seconds
0
0
Periodic Flush:
Interval
Minutes
0
60
Periodic Flush:
Duration
Seconds
0
60
Shutdown Flush:
Time from last flush
Minutes
0
10
Shutdown Flush:
Minimum operation
Minutes
0
30
Shutdown Flush:
Duration
Seconds
0
60
Timed Manual Run
Minutes
5
5
Timed Manual Flush
Minutes
0
5
4.2 Starting Up and Flushing the System
1.0 Turn on the feed water valve to the system and check all connections for leaks. Do not proceed
further until any leaks are fixed. Water will flow to the pre-treatment housings but will not pass the
inlet solenoid (see Figure 4.) until the system has been started. The available line pressure should
now register on the line pressure gauge. Purge any air from the pre-filter housing by pressing the
Red valve on top of the housing
2.0 Open the recirculation valve to the fully open position.
3.0 The system pump must be initially primed and at any time that the system has been drained, prior
to start-up. THE PUMP MUST NOT BE RUN DRY OR DAMAGE WILL RESULT. Please refer to
the pump manual (included) for priming instructions.
