4 Installation Instructions
4.1 Safety Precautions
a WARNING: Read this Installation and Maintenance Manual carefully and
completely before attempting to install, operate, or troubleshoot the Limitorque
WTR actuator. Be aware of electrical hazards if an electric actuator is attached to the
WTR manual actuator. Be aware of high-pressure hazards associated with the
attached valve or other actuated device when installing or performing maintenance
on your WTR actuator.
a WARNING: Do not overtorque the WTR actuator or operate the actuator with
devices other than installed operating equipment such as the handwheel, chainwheel,
2" AWWA nut or other factory-installed equipment. Using force beyond the ratings
of the unit and/or using additive force devices such as cheater bars, wheel wrenches,
pipe wrenches or other devices on the actuator handwheel may cause serious personal
injury and/or damage to the actuator or valve.
a WARNING: Do not overtorque the WTR actuator when using a Power-Take-Off
Drive (PTO) to operate the 2" AWWA nut. Using force beyond the ratings of the unit
may cause serious personal injury and/or damage to the actuator or valve.
a WARNING: Potential HIGH-PRESSURE vessel - Before installing the WTR on a
valve that is in service, ensure that the valve or other actuated device is isolated from
operation and the associated pipeline is not under pressure.
a WARNING: Do not attempt to remove the WTR from a valve on a pressurized line.
The WTR has self-locking gears that will stabilize the valve until pressure on the line
is under control or removed.
4.2 Safety Practices
The following check points should be performed to maintain safe operation of the WTR
actuator:
• Set up a periodic operating schedule on infrequently used valves.
• Verify that the pointer cap has been replaced after the gear operator is installed.
• Verify that the “end-of-travel” stop screws are correctly adjusted.
• Verify that the limit and/or torque switches on any electric actuator fitted to the WTR are
correctly and appropriately adjusted.
WTR Series
Installation Instructions
WTR Installation & Maintenance Manual 330-15000 • Revision A • August4-1
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