User Manual QT series generation 2.5, ID 2021, rev 3.2, January 14, 2022
Page
51 of 88
The QT-series actuators are, in principle, maintenance-free. All bearings and
gears are lifetime lubricated, and components are designed to last
throughout the actuator’s lifetime.
However, it is recommended that the
actuator is inspected regularly to reveal any damages caused by mechanical
impact or corrosion.
•
Inspection
•
Lubrication
•
Care and cleaning of anodizing
•
Maintenance of battery in a Failsafe system. See section 11.8
Maintenance on page 74.
•
The actuators should be inspected yearly:
-
Check that the bolts connecting the actuator and valve are fastened
according to the required torque.
-
Check that the top cover gasket and operation shaft are lubricated. If
they seem to be dry, follow the procedure in 6.4.
-
Check for corrosion or other physical damage.
-
Perform a test run for each actuator from the control unit.
•
Eltorque recommends that the unit is inspected for damage by Eltorque
qualified personnel if the actuator has been submerged in seawater.
See Appendix A Torque and Screw Recommendations on page 83.
The top cover gasket and manual operation shaft seal should be lubricated
if they appear to be dry. Use suitable silicone lubricants for O-rings, such as
MOLYKOTE 55 O-RING grease or Super Lube silicone lubricating compound.
For cleaning purposes use organic solvents such as mild soap or detergent,
alcohol, acetone or MEK (
methyl ethyl ketone).
Caution!
Do not use ammonia, alkaline cleaners, lye, or strong acid for cleaning
Caution!
Do not use high pressure power washer directly on the actuators as the product
is not IP69K rated.
