Andco Actuators Linear Electric Actuator 7205T

Remove all hex head cap screws (53) and associated lockwashers (54).

Remove the limit switch compartment cover (51) from the actuator assembly.

Remove all hex head cap screws (69) and associated lockwashers (70).

Remove the thrust switch compartment cover (65) from the actuator assembly.

Motor Disconnection and Removal

Disconnect all electrical power leads to the motor (30).

Remove all carriage bolts and associated lockwashers.

Disconnect all electrical power to the actuator

Wear approved Personnel Protective Equipment (PPE)

Be aware of internal moving parts and pinch point hazards

Ensure service personnel are licensed/trained and authorized

Use assistance when moving or lifting to avoid injury

Disconnect electrical power leads to the motor

Ensure the unit is not equipped with motor control cards

Verify that tests involving electrical power to units with motor control cards are covered by a separate procedure

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

Set the test equipment to the selected voltage

Ensure the test equipment ground wire is contacting the gear case plate

Contact each test point shown on wiring diagram

Remove the brake cover to expose square head wear adjusting screws (15H) and expose the magnetic air gap “A”.

Measure the air gap “A” using 3/8” to 1/2” wide feeler gauge at the center of the magnet.

Turn the two square head wear adjusting screws until the air gap “A” measures the correct value for the model.

Is the air gap the same on both sides?

Ensure brakes are not adjusted for higher torques to prevent premature coil burnout.

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

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

Adjust rotor (#36-1) contact fingers