Describing the maintenance of the DNA freezers of the Biobank. A good maintenance will keep the temperature of the freezer steady and the freezer will work better.
The DNA freezers of the Biobank intended for normalized DNA.
- The staff at KI Biobank is responsible for following this instruction.
- The Biomedical analyst issuing the instruction is responsible for updating it.
Manual: Kirsch Model Froster – 720 Vers. Nr. 184
Instruction: 0293 Larm och Beredskap (alarm and preparedness)
Maintenance and service
All the weekly maintenance should be documented in the log sheet for DNA freezers. Service, maintenance every third month, and yearly maintenance should be documented in the Event-log.
Every week the temperature of the freezer should be checked and noted in the log sheet for DNA freezers. For the Kirsch freezers of the Biobank, placed on level 3, the maintenance is done when needed, but at least every second week.
-23°C – -27°C
When the temperature is outside the given interval, it shall be adjusted, see the manufacturer’s manual. Document any action taken in the Event-log for DNA freezers.
Every sixth month
Testing the alarm of the freezer
Every sixth month the alarm of the freezer shall be tested, see instruction 0293 Larm och Beredskap (alarm and preparedness).
- Cleaning the compressor, see manual.
- The condenser is on top of the freezer. Carefully vacuum-clean it.
- The freezer is self-defrosting.
Moving the freezer
When a freezer is moved this should be noted in the Event-log and the temperature should be logged afterwards. Also, the alarm id of the freezer should be documented in the Event-log.