3M MEMBRANA Liqui-Cel, Инструкция по уборке

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9
Liqui-Cel
®
Membrane Contactors Cleaning Guidelines
described below it is assumed that cleaning is done only on the water-contact side of
membrane. In some cases the gas side of the membrane may also have to be cleaned. All
solutions should circulate on the shellside unless there is a special need to clean the
lumenside.
B. Sanitization of the Cleaned Membrane
Once the membrane has been cleaned, sanitization can begin using the following
guidelines. Do
not exceed 85
º
C during HWS. Only SS vessels are recommended for HWS.
Table 3: Hot Water Sanitization (HWS) Guidelines for Stainless Steel Housings with X40 Fiber in 4
and 10-inch sizes and for X-50 in 4-inch only.
Maximum Temperature Maximum Operating Pressure Maximum number of sanitations
85 ºC (185 ºF) 30 psig (2.11 kg/cm
2
) 1000
NOTE: During HWS the lumenside should have a small, continuous flow of N2 or other inert gas to protect the
membrane from oxidation. In addition, always purge the lumenside with gas after the Hot CIP process is complete. We
recommend using an inert gas for purging. If an inert gas is not available, air can be used only after the contactor has
cooled down to room temperature.
The water temperature during the sanitization should be accurately controlled to ensure the
temperature never exceeds 85 ºC (185 ºF).