Limit switch & torque switch setting procedures – Flowserve UEX Limitorque User Manual
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Limitorque UEX FCD LMENIM1205-03-AQ – 05/15
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3.1 Initial Actuator Preparation
Replace all molded plastic conduit and top protectors (installed for shipping purposes only) with pipe
plugs when installation wiring is complete.
3.2 Torque Switch
The torque switch is designed to protect the actuator in open and close directions.
a
CAUTION: Disconnect all incoming power before opening limit switch compartment or working on
the torque switch.
• Do not use abrasive cloth to clean the contacts on the torque switch.
• Do not torque seat 90° operation valves nor run them against the stops. This may cause damage
to the valve.
NOTE: If the actuator has “torqued out,” release torque buildup by operating the actuator manually.
3.2.1 Setting Torque Switch
The torque switch was set at the factory according to customer-supplied information regarding neces-
sary torque or thrust output that was provided at the time of the order. However, if the setting needs to
be adjusted, perform the following procedure:
a
CAUTION: A torque switch limiter plate is provided on most actuators.
• Removal or modification of the torque switch limiter plate will void the actuator warranty.
• Do not exceed the setting indicated by this plate without contacting the Limitorque service
department.
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Limit Switch & Torque Switch
Setting Procedures