YSI P 700 IQ Analyzer - Manual (Page 90)

90 ba76133e01 09/2013
P 700 IQ
5 Then carefully remove the coating from the filter membrane using
a soft special brush. Normally the brownish coating can well be
seen coming off while the lighter membrane surface is appearing.
6 After cleaning, check both sides of the membranes for damage.
7 Thoroughly clean the special brush under running water, dry it
and store in a dust free place till the next use.
8 Submerse the cleaned filter module in the basin or channel.
9 Switch on the filtration pump with the Start/Stop key.
Restarting the
measuring operation
10 Carry out the steps 15…20 in section 5.3.4 Maintenance and
cleaning work on the open P 700 IQ,  73.
5.4.5.2 Chemical cleaning
The chemical cleaning is carried out with the aid of a suitable container
(Filter-CL) for the cleaning bath. The amount of cleaning solution
required depends on the shape and size of the cleaning container.
Cleaning solution: Aqueous sodium hypochlorite solution (NaClO), 1 %
active chlorine
Preparing the cleaning
solution
The membrane cleaner can be made from different detergent concen-
trates by diluting with water. A selection of possible detergent concen-
trates is given in the section 5.2 Consumables, accessories, replace-
ment parts,  65.
Prepare the cleaning solution according to the following table. It can be
mixed in the cleaning container.
ATTENTION
Do not press the special brush too firmly on the mem-
brane surface and do not change the moving direction of
the brush (do not scrub!).
Base solution
Preparation
instructions
Yield
Household hygienic
cleaner based on
sodium hypochlorite Add so much water
to 1.5 l hygienic
cleaner that the
volume is 6 l 6 l