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Limitorque
®
L120-190 through L120-2000 FCD LMENIM1203-01-A4 – 05/15
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4.1 Safety Precautions
c WARNING: Read this Installation, Operation, and Maintenance Manual carefully and completely
before attempting to install, operate, or troubleshoot the Limitorque actuator.
c WARNING: Be aware of electrical hazards. Turn off incoming power before working on the
actuator and before opening the switch compartment.
c WARNING: Potential HIGH PRESSURE vessel — be aware of high-pressure hazards associated
with the attached valve or other actuated device when installing or performing maintenance
on the actuator. Do not remove the actuator mounting bolts from the valve or actuated device
unless the valve or device stem is secured to prevent movement of the stem or there is no
pressure in the line.
c WARNING: For maintenance and/or disassembly of the actuator while installed on the valve,
ensure that the actuator is not under thrust or torque load. If the valve must be left in service,
the valve stem must be locked in such a way as to prevent any movement of the valve stem.
c WARNING: Do not attempt to remove the spring cartridge cap, housing cover, or stem nut
locknut from the actuator while the valve or actuated device is under load.
c WARNING: Do not manually operate the actuator with devices other than the installed hand-
wheel and declutch lever. Using force beyond the ratings of the actuator and/or using additive
force devices such as cheater bars, wheel wrenches, pipe wrenches, or other devices on the
actuator handwheel or declutch lever may cause serious personal injury and/or damage to the
actuator and valve.
c WARNING: Do not exceed any design limitations or make modifications to this equipment
without first consulting Limitorque.
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Installation Instructions
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