testo Instruments Co. Ltd 05605522 Manuel D’Utilisation

5  Maintenance  

22 

 

 

5.2

  Cleaning the instrument 

 

Contaminants such as oil may impair the accuracy of the vacuum 
sensor. Complete the following steps to clean the sensor. 

 

CAUTION 

Carrying out cleaning with the instrument switched on may result in 
damage to the sensor! 

-  Before cleaning, switch the instrument off! 

 

 

CAUTION 

Damage to the sensor due to sharp objects! 

-  Do not insert any sharp objects into the connections! 

 

 

1 

- Switch the instrument off. 

 

2 

- Put a few drops of rubbing alcohol into one of the two connections. 

 

3 

- Seal the opening by placing your finger on it or screw on the sealing 

caps.  

- Shake the instrument briefly.  

 

4 

- Remove all the alcohol from the instrument. 

 

5 

- Repeat this process at least twice.  

 

6 

- Leave the instrument to dry for at least 1 hour. To dry the sensor 

faster, you can connect the probe directly to a vacuum pump and 

draw vacuum.