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30 MAINTENANCE
ST actuators have life-long lubrication, thus do not need specific
maintenance.
However, the condition of the stem and the stem nut should be checked
periodically to ensure that they are clean and properly lubricated.
We recommend establishing a regular program of test movements on motor
drive units which are rarely used.
In the case of the actuator with the battery option
Depending on the actuator configuration, a «Low Battery» message appears
on the display or remotely when the battery is too low.
You must replace the batteries by this type of battery:
•
2 batteries OMNICEL ER14505HD Lithium Thionyl Chloride (Li-SOCl2)
type.
•
Alternatives: MICROBAT ER14505 M or EVE ER14505 M.
For weather-proof actuator, you should also choose another type with this
requirement: AA, 2.2Ah, 3.6V, 400mA, -40°/+85°C.
31 TROUBLESHOOTING
If there is any doubt about the operation of the system, first set the Local /
Remote selector in the Local position and then operate the open and close
controls.
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