Maintenance
Section 6: Maintenance
This section explains:
•
When and how to do maintenance to the base actuator.
—
Normal maintenance.
—
Extraordinary maintenance.
•
What to do when replacing springs.
•
What the availability is of spare parts, action conversion kits and temperature
conversion kits.
WARNING
Actuator must be isolated pneumatically and electrically before any (dis)assembly starts.
Before mounting or (dis)assembling the actuator, consult the relevant sections of this manual.
6.1
Normal Maintenance
Bettis Q-Series actuators are designed to operate without maintenance for their normal
working life. Normal working life is 500,000 cycles* for sizes up to Q1600.
NOTE:
*Cycles = one open stroke and one close stroke.
We recommend regular inspections to make certain that the actuator / valve assembly
operates smoothly and to check that there are no visible or audible defects. We advise to
perform the following checks upon each proof test interval complying with the rules and
regulations of the country of final installation:
•
Visually check the entire actuator as well as the control system (where foreseen).
•
Ensure there are no leaks on the actuator parts under pressure.
•
Check pneumatic connections for leaks. Tighten tube fittings as required.
•
Check if manual override (where foreseen) is regular.
•
Check if pneumatic filter cartridge (where foreseen) is sound and filter bowl
(where foreseen) has been cleaned properly.
•
Check the setting of the relief valves (where foreseen).
•
Verify that the power fluid supply pressure value is within the required range.
•
Remove built-up dust and dirt from all actuator surfaces.
•
Inspect actuator paint work for damages to ensure continued corrosion protection.
Touch-up as required in accordance with the applicable paint specification.
Installation, Operation and Maintenance Manual
DOC.IOM.BQ.E Rev. 3
April 2019
29
Section 6: Maintenance
