Disinfection And Rinse; Heat Disinfection - Gambro AK 95 S Service Manual

Disinfection and rinse

Chem disinfection
When Disinfection is selected by pressing the
CHEM DISINF key, the information display
will show three alternatives of disinfection
solutions.
The disinfectant fluid will be taken up by the B-
tube and if the B tube is not taken out of the
machine and/or if the A-tube is taken out, there
will be an attention.
When the filling phase is finished the AK 95 S
will give an attention that requests you to place
the B-tube back in the monitor. When this is
done the disinfection solution is distributed in all
of the fluid path and the dwell time starts. As
soon as the dwell time is done, an automatic
rinse will start.
It is possible to end the Disinfection dwell
program before it is finished by pressing
RINSE/DRAIN key.
It is not possible to go from chemical disinfection
mode to treatment mode without a rinse. In case
of a power failure the monitor will save recovery
data and continue the disinfection when the
power returns.

Heat disinfection

During the heat disinfection program the inlet
water is heated and rinsed through the fluid
unit. The machine is then drained.
It is also possible to run the heat disinfection in
combination with Citric Acid 20% or with a
CleanCart installed.
For heat disinfection a heat exchanger is a
requirement. For 230V version the exchanger
must have an efficiency of minimum 60%. 110V
and 100 V requires 76% efficiency.
To get a proper heat disinfection, the fluid must
exceed 80°C. The exchanger is not only necessar-
ily to achieve proper temperature but it is also
important for stabilization of the heater control
system.
AK 95 / AK 95 S Service Manual
HCEN 9134 Rev. 10.2005
Heat disinfection is selected with the HEAT
DISINF button. The remaining disinfection
time shows on the time display as soon the
disinfection starts. How many minutes a pro-
gram lasts is seen below. Total time for Disinfec-
tion Programs are estimated and may vary.
Disinfection programs
230 V 110 V
With UFD installed
Heat 35
Heat Citric acid 20% 52
Heat CleanCart 49
Without UFD
Heat 33
Heat Citric acid 20% 50
Heat CleanCart 46
Four minutes before completion of the heat-
disinfection, the program enters the drain phase
and the heat disinfection lamp is turned off. The
heat disinfection completes when the RINSE/
DRAIN key is flashing.
When pressing the flashing RINSE/DRAIN key
after a completed disinfection, the machine will
perform a functional check (Fch).
Rinse/Drain
Rinse mode will be started automatically after a
disinfection as described above or manually by
pressing the RINSE/DRAIN key. The display
shows the rinse time and allows you to change it
if you wish. The rinse program will run for the
set time. Both A- and B- pick-up tubes must be
placed in the monitor, otherwise there will be an
attention. During the final drain phase the air
intake valve, AIVA, is open. When rinse is
completed the RINSE/DRAIN key will be flash-
ing.
The machine will perform a functional check
(Fch), when pressing the flashing RINSE/
DRAIN key after a completed disinfection.
There is a possibility to reset and preset the
chemical disinfection mode by enter the service
mode. For more information, see chapter 4,
Technicians guide.
Technical Description
Time [min]
100 V
39 49
57 67
54 64
37 47
55 65
51 61
2:13