User Instructions
Part Number IOM – 87376-7 July 2016, Rev 1.0
10
CAUTION: REFRAIN CAUSING STRESS IN ACTUATOR
The actuator has a prestressed disk spring assembly. When undoing the flange mounting bolts,
the spring force against the fitting can cause the actuator to turn abruptly or come loose from
the fitting. Adequate safety measures must be taken.
Any powering up must be ruled out during maintenance. Work on the electrical systems or
components may only be carried out by electricians or by individuals who have been instructed
how to do so. Work under the guidance and supervision of an electrician in accordance with
electrotechnical regulations.
After completing their commissioning, the actuators are ready for use. The actuator is filled
with oil, as standard, when shipped.
Routine checks:
•
Be mindful of increased running noises. In cases of long down times, operate the
actuator at least every three months.
•
Check the fail-safe function (check the operating time and smoothness of running
in fail-safe operation). Lengthening in the running time may also be caused by an
increased torque requirement for the fitting after long downtimes.
CAUTION: ALWAYS REFER TO INSTRUCTIONS
The actuator has a prestressed disk spring assembly. Improper dismounting may lead to both
damage to the actuator as well as serious injuries. If maintenance work is needed requiring the
actuator to be dismounted, contact Emerson regarding detailed instructions and/or any special
purpose tools for relaxing the spring assembly.
The actuators are designed for any mounting position (see
Section 3.4
), which is why there is
neither a filling level indicator nor a drain plug on the main casing.
Depending on the stress actuator is subjected to, do the following approximately every 10,000
to 20,000 hours (about 5 years; see
Section 10
):
•
Oil change
•
Replace seals
•
Check all the roller bearings and the worm gear assembly and replace if necessary.
Take the types of oils and greases to be used from our Lubricant Recommendation Table (see
Section 9
).
Section 8: Lubricant Recommendation and
Requirements
8.1
Main Casing
Gear oil: DIN 51 517 - CLP - HC
Fully synthetic high performance industrial gear oils based on poly-alpha-olefins (PAO)
Temperature: -25 to +60
o
C
Summary of Contents for RTS FQ
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