19CDL Sugaring Equipment
LONG-TERM STORAGE PROCEDURE
1. Properly clean RO membranes using CDL Super Flow Green membrane cleaner, following
the instructions on the container. Repeated washes may be necessary if the wash solution
is cloudy. A coloured wash solution means that the membrane is not entirely clean. The
solution should be clear after the final wash.
Replace filtration cartridges with new ones.
5 gallons of permeate is sufficient for rinsing between washes. We recommend draining the
wash solution, following the drainage procedure, before rinsing.
2. Rinse membranes with RO permeate or acceptable quality water. If permeate isn’t available,
see the water quality guidelines to determine which water is safe to use.
3. Citric acid treatment
Treating with citric acid helps dissolve minerals that may partially block membrane pores.
Following the washing procedure, add 1/4 cup of citric acid to a 5-gallon bucket of 80 °F
permeate.
Run the equipment in a closed loop for 1 hour or more, allow soaking overnight. If the water
is cloudy, wash the system with CDL Super Flow Green, then rinse.
4. Storage solution
You may leave membranes in the unit for storage as long the unit is protected from frost.
Citric acid is a good preservative that prevents bacteria from developing in the system. Add
1/4 cup of CDL citric acid to a 5-gallon bucket of permeate, then run the RO in a closed
loop for ½ hour to allow proper mixing. To prevent leaks, disconnect the suction (yellow
),
concentrate (red
), and permeate (blue
) tubes and insert the provided plugs in the
connectors.
5. Store the equipment in a cool room where protected from frost
To Next Page