Note on steps 7 and 8: Start by pushing the filter cover [] into the pressure
regulator unit [] and then turn it to the right until the blue locking lever []
engages automatically.
Checking the supply pressure on the oil mist detector
After completing installation step 8, the supply pressure on the VN2020
measuring head has to be checked again and readjusted if necessary.
To carry out installation step 8, first see Section 6.5.3
Section 6.5.3 Setting the
negative pressure at the measuring head of the VN2020 / VN2020 EX