ProMinent delta DLTa optoDrive Operating Instructions Manual page 74

Maintenance
Liquid ends with bleed valve:
Interval Maintenance work
Quarterly* In addition:
Check that the return line is fixed firmly to the liquid end.
n
Check that the bleed valve is tight.
n
Check the discharge and return line for kinks.
n
Check that the bleed valve is operating correctly.
n
Tightening torque
74
Fig. 31: Leakage hole
* Under normal loading (approx. 30 % of continuous operation)
Under heavy loading (e.g. continuous operation): Shorter intervals.
Data
Tightening torque for screws:
P_BE_0012_SW
Personnel
Technical personnel
Value Unit
4.5 ... 5.0 Nm