18
20901544_E12C+16C_NT Vsel_V1.2_260922
Safety information
Incorrect measurements due to a blocked vacuum line, e. g., con
‑
densate in the vacuum line, can distort the measurements taken
by the vacuum sensor.
>
Prevent overpressure > 1060 mbar (795 Torr) inside the suc
‑
tion line.
Prevent foreign bodies inside the pump
Particles, liquids and dust must not get inside the vacuum pump.
>
Do not pump any substances which could form deposits
inside the vacuum pump.
>
Install suitable separators and/or filters upstream of the inlet.
Suitable filters are chemically resistant, clog‑proof and have a
reliable flow rate, for example.
>
Replace porous vacuum hoses without delay.
Hazards during venting
Depending on the application, explosive mixtures can form or oth
‑
er hazardous situations can arise in systems.
Hazards due to residual energy
After the vacuum pump has been switched off and disconnected
from the power supply, there may still be dangers due to residual
energy:
■
Thermal energy: Motor waste heat, hot surfaces, compression
heat.
>
Allow the vacuum pump to cool down.
■
Electrical energy: The capacitors on the electronic assembly
have a discharge time of up to 3 minutes.
>
Wait until the capacitors have discharged.
Observe vacuum
pump design
Possible
residual energy
Hazards when
venting
Prevent incorrect
measurements
