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Hydrox actuators need only little maintenance.
The correct choice of valve and actuator combination as well as careful installation, commissioning and
use, significantly reduce any need for maintenance.
WARNING:
When the valve is installed in the line, also the surface temperature of the actuator may
be dangerously high. Protect yourself against burns.
If working in potentially explosive atmosphere all related safety and work instructions
must be followed.
Any tools or working methods generating sparks or extensive heat are not allowed
without written permission from responsible personnel.
We recommend checking the following periodically:
Check that the actuator is free from oil leaks, and carefully tighten if any leakages occurred.
To ensure long-term operational reliability, even when seldom used (around ten times a year or less), we
recommend the following:
Approximately six months after commissioning and then once a year, check the functionality of the
actuator, inspect the actuator for oil leaks, and ensure the tightness of the fastening screws between
actuator and valve.
7.1 Oil change
Oil changes are necessary and depend on size of the system. Under clean conditions, it is recommended
that the condition of the oil is inspected approximately every two years and that the oil is replaced at every
second inspection. If dirty/low-quality oil is used, oil changes are necessary at shorter intervals. Because
the small oil volume in part-turn actuators compared to the volume in the pipework, there is no oil change
during the operating cycles. Because of this, it is recommended to change the hydraulic oil so that the oil
changes also inside the part-turn actuator and hoses not only in the hydraulic pump.
7. Maintenance
