Flowserve L120-85 Actuator - Manual (Page 26)

6.1.5 Minimum Lubricant Qualities Required
a CAUTION: Do not mix lubricants of a different base chemi-
cal. Mixing lubricant bases may cause lubricant properties to
be ineffective.
The standard lubricants used by Limitorque have been proven
extremely reliable over years of service. We do not recommend a
particular lubricant substitute for our standard lubricants, but below
is a list of minimum lubricant qualities required by Limitorque:
• Should contain an “EP” additive.
• Must be suitable for the temperature range intended.
• Must be water and heat resistant and non-separating.
• Must not create more than 8% swell in Buna N or Viton.
• Must not contain any grit, abrasive or fillers.
• Must slump–prefer NLGI grade.
• Must not be corrosive to steel gears, ball or roller bearings.
• Dropping point must be above 316° F for temperature ranges of
-20°F (-29°C) to 150°F (66°C).
c WARNING: Hazardous Voltage. Turn power OFF before
disassembling your L120-85 actuator.
c WARNING: Potential high pressure vessel. Before removing
or disassembling your actuator, ensure that the valve or
other actuated device is isolated and is not under pressure.
NOTE: Minor service may be performed with the actuator mounted
on the valve or other actuated devices. Perform more complex
service with the actuator removed from the valve or other actuated
device.
NOTE: Review and familiarize yourself with the illustrated parts
breakdown prior to disassembly.
NOTE: Drive 2 units (Thrust only) will maintain the thrust of a valve
without the actuator mounted on the Thrust Base. Before removing
the actuator from the Thrust Base, ensure that all actuated devices
are secured to appropriate positions while actuator is removed from
the Thrust Base.
Limitorque L120-85 Installation, Operation and Maintenance FCD LMENIM1202-00 – 11/05
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