# Service instructions

Overhaul and preventive maintenance is recommended at regular intervals once per year or after maximum 250.000 tightening depending on which occurs sooner. More frequent overhaul may be needed if used at high torque, high cycle rate or long tightening times. If the machine is not working properly, it should immediately be taken away for inspection.

At the overhauls, all parts should be cleaned accurately and defective or worn parts (i.e. O-rings) should be replaced.