RO Compact Series Technical Manual
30
Routine Maintenance
Filter maintenance:
The system will shut down if the feed pressure
is too low (not above 1 bar). In this situation, it
is likely that the filter cartridge will need to be
replaced. Refer to the daily log for changes in
the inlet pressure.
We recommend replacing the filter cartridge
when the pre-filter pressure drops to ½ bar.
Membrane cleaning:
It is possible to establish the need for membrane
cleaning when referring to the daily log. If the
cycle time of the system has decreased by more
than 50%, the membrane may require cleaning.
Please refer to the maintenance section of this
manual for further details.
Long Term System Shutdowns:
If the system is to be out of operation for more
than 30 days:
• Allow the system to completely fill the RO
permeate reservoir and perform a permeate
flush.
• Shut the system switch o and disconnect the
power.
• Disconnect the permeate line.
Mix a volume of 1% sodium bisulfite (by
weight) into the permeate reservoir
- 35 litre capacity. (Note: sodium
bisulfite should be food grade, not
cobalt activated).
Long term start-ups:
This procedure should be completed after the
unit has been sanitized with sodium bisulfite.
Temporarily connect the permeate outlet
to the drain with ½” hose.
Turn the power to the unit on.
Turn the RO system on.
Open the permeate line and allow the
permeate tank to empty completely.
Allow the water to run for 15 minutes, this
will activate a fill cycle for the system.
After 15 minutes, shut the unit down,
reconnect the permeate line, then begin
normal operation.
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