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WRO 300 H
HCEN12481-02/2012
Regular maintenance
35
3.3 Cleaning
3.3.1
Warm Acid cleaning
Warm Acid cleaning should be performed when
•
Rejection rate has decreased by more than 5 % from initial
value.
•
Sufficient output flow is not obtained.
•
As preventive measure when a softener is not used.
•
As a method to remove transitional metals from the
RO membrane prior to Chemical disinfection.
3.3.2
Acid Cleaning agents recommended by
Gambro
•
Citric Acid
Required amount: dissolve 100 ml of citric acid in 200 ml of
product water from the WRO 300 H. This will result in a
2 % solution in the WRO 300 H.
•
Minnclean AC
Required amount: according to manufacture’s instruction.
For procedure refer to
“Cleaning procedure” on page 37
.
WARNING
Cleaning agents may be toxic. Use safety glasses and gloves. Refer
to
manufacturer’s instructions.
NOTE
Other cleaning agents may also be used for the WRO 300 H, pro-
vided that they are approved by the manufacturer for cleaning of thin
film composite reverse osmosis membranes made of modified polya-
mide. Follow the
manufacturer's instructions
for use for the specific
cleaning agent.
Содержание WRO 300
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