Andco Actuators Linear Electric Actuator 7310T

Disconnect all electrical power to the actuator

Wear approved Personnel Protective Equipment (PPE)

Ensure service personnel are licensed/trained and authorized

Use assistance when moving or lifting to avoid injury

Remove the position and torque limit switch compartment covers

Disconnect the electrical power leads to the motor

Remove the four fasteners retaining motor end bell and stator

Ensure no motor control cards are present

Select the voltage setting for the appropriate motor voltage as indicated on nameplate

Set the selected test equipment to the selected volts

Contact each test point shown on wiring diagram with the test equipment ground wire contacting the gear case plate

Verify the actuator withstands the applied voltage for one second per test point without breakdown

Check motor power circuits based on motor voltage (AC)

If using DC voltage, ensure it is 1.414 times the specified AC voltage

Remove the pipe plug (23) located in the side of the housing (1)

Inspect the lubricant for proper consistency and quality

Is the lubricant level adequate?

Is the lubricant free from visible contamination?

Replace the pipe plug tightly after inspection

If lubricant level is low or contaminated, describe the further inspection required

Disconnect all electrical power to actuator

Remove the position limit switch compartment cover (51)

Remove the motor pipe plug (100)

Rotate the shaft clockwise to extend the actuator shaft using a manual or power screwdriver

Are the rotor (#36-1) contact fingers closed?

Adjust rotor (#36-1) contact fingers

Disconnect all electrical power to the actuator

Ensure surface is cool before proceeding

Remove the brake cover from the motor end bell

Disconnect the coil power wires from the terminal strip

Reverse the removal procedure to replace the brake assembly