Cleaning The Filter Unit - wtw PurCon IS sample preparation Operating Manual

Maintenance
Reaction time
Preparing the cleaning
solution
80

5.1.2 Cleaning the filter unit

For cleaning, the filters are immersed in a container with 1 % sodium
hypochlorite solution as the cleaning solution. The quantity of cleaning
solution required depends on the size of the container used. The filters
must be completely submerged.
The reaction time depends on the amount of contamination and must
be determined empirically for the respective application. Begin with a
reaction time of 15 minutes. Follow the cleaning sequence and extend
the reaction time if necessary.
The amount of cleaning solution required varies depending on the form
and size of the cleaning container.
WARNING
The cleaning solution is corrosive and irritates skin and eyes.
Avoid any contact when dealing with the cleaning solution. Pay at-
tention to the safety datasheets of the chemical manufacturer and
absolutely follow the protective measures specified in them.
Prepare the cleaning solution according to the following table. The
preparation can be carried out directly in the cleaning container.
Initial solution (see
chapter 8 A
CCESSORIES
AND CONSUMABLE MATERI
)
ALS
Household hygienic
cleaner based on sodium
hypochlorite
Technical sodium hy-
pochlorite
solution
(13 % active chlorine)
Preparation instruc-
tions
-
Top up 1.5 l hygienic
cleaner with water to 6 l
Top up 300 ml with
water to 5 l
PurCon IS
Yield
6 l
5 l
ba43133e06 05/2009