Fig. 31: The leakage hole
Interval Maintenance work Personnel
Quarterly* In addition:
n 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.
Technical personnel
* Under normal loading (approx. 30% of continuous operation).
Under heavy loading (e.g. continuous operation): Shorter intervals.
Data Value Unit
Tightening torque for screws: 4.5 ... 5.0 Nm
Liquid ends with bleed valve:
Tightening torque
Maintenance
76
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