Heat Disinfection - Fresenius Medical Care 2008K Operator's Manual

Heat Disinfection

The Heat Disinfect program disinfects the machine by running hot water (about 80 C)
through the machine. The water recirculates at a program-controlled flow of about 400
ml/min. The program time can be set internally to run between 10 and 60 minutes. The timer
starts as soon as the temperature of the water reaches 80 °C.
To run the Heat Disinfect program:
1. Ensure that both dialysate lines are on the shunt and both concentrate connectors in their
respective ports.
2. From the "Select Program" screen, touch Heat Disinfect to start the Heat Disinfect
program. The "Heat Disinfect" screen appears in the control panel display (see Figure
60). If the machine was not rinsed prior to this, it will automatically run a short rinse
(seven minutes) or an extended rinse (20 minutes) depending on how the machine was
configured in Service Mode.
Figure 60 – The Heat Disinfection Screen
Warning! During the heat disinfection cycle, it is not uncommon to see steam emitting from
the vent tubing at the back of the machine. This steam may cause burns if contacted. Also,
the temperature of the dialysate lines and drain line can get as hot as 69 °C (156 °F). Please
use care.
3. After the heat disinfection is complete, if the machine is not configured to automatically
turn off at the completion of the cycle, press CONFIRM to exit when prompted.
Note: The drain line is subjected to a lower temperature and shorter heat cycle than the rest
of the machine. If you are unable to completely clean biofilm from the drain line, select the
"Extended Pre-rinse" option in Service Mode. If necessary, replace the drain line.
Note: Cooling time can be shortened by running the Rinse program, which will flush the
machine with 37 °C water. Do not cool the machine with the Rinse program unless the
machine will be used immediately afterwards.
2008K Hemodialysis Machine Operator's Manual Rev P
Chapter 5—Disinfection and Maintenance
131