Toray TORAYFIL HFU AN Series - Storage of Membrane Module; Storage of New Membrane Modules; Storage of Membrane Modules after Use

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VIII. Storage of Membrane Module
Follow the instruction below when you store the modules.
 Be careful not to freeze the modules.
1. Storage of New Membrane Modules
Keep the modules in the original packing in a dark and cool place (0 to 40 degree
C).
Avoid direct sunlight and moisture.
2. Storage of Membrane Modules after use
(1) Short term, or temporary, shutdown or storage
In the case of the suspension of operation for less than four days, stop the
feed water and keep modules full of water. Keep the modules at 0 to 40
degree C.
If the suspension lasts for four days to less than eight days, fill the module
with the chemical described in Table 6. Use filtrate quality water. Keep the
modules at 0 to 40 degree C.
Table 6 Conditions for storing membrane modules for less than eight days
Maximum Storage Period
Chemical
Concentration of the
Chemical
7 days
Sodium hypochlorite
20 mg/L as chlorine