Beckman Coulter LS 13 320, User Manual, Page: 145 / 254

PN B05577AC 6-15
Sample Modules
Aqueous Liquid Module
6
Cleaning the ALM
It is important for all glass surfaces in your sample system to be clean. Dusty or coated optical
surfaces can cause erroneous results. Some samples or suspension fluids may coat the inside of the
sample cell windows. If the instrument is in a dusty or smoky environment, or if vapors are present,
the lenses and outer surfaces of the windows may become coated. Check the optical surfaces for
cleanliness at least every three months, and clean if needed. Depending on the environment
cleaning may be required more frequently.
Cleaning Fluids
Beckman Coulter recommends cleaning solution supplied with the module for cleaning the inner
surfaces of the ALM sample system. Beckman Coulter recommends lens cleaning paper for cleaning
the lenses and sample cell windows.
Cleaning the Cell
Clean the inner surfaces of the sample system (pump, hoses and within the sample cells) whenever
they become coated.
To clean the sample system:
1
Select
Control
.
2
Select
Rinse
. Rinse for approximately five minutes with water. Select
Cancel
to complete the
rinsing routine.
3
Select
Control
again.
4
Select
Open Drain
.
5
Select
Close Drain
.
6
Prepare the cleaning solution.
7
Fill the vessel with cleaning solution.
8
Let the cleaning solution circulate for 15 minutes to 1 hour, depending on how dirty the cell is.
9
Select
Open Drain > Rinse
.
10
The windows can be cleaned by removing the thumbscrews that hold the cover shown in
Figure 6.8 .