21. Gently tighten the screws (1) and then
tighten them diagonally. See below for
tightening torque.
CAUTION!
Leakage possible
– Check the tightening torque of the
screws after 24 hours of operation!
– With PP and PV dosing heads, check
the tightening torque again after three
months!
Tightening torque
Data Value Unit
Tightening torque for screws: 4.5 ... 5.0 Nm
Repairs
17
Mahar Fan Abzar