unit 8

What is the function of the squirrel cage motor in MOV is?

• Allow mechanical operation of the valve

• Set the actuator motor drive limits

• Mechanical drive to open and close the valve

• to choose LOCAL, REMOTE, LOCAL & REMOTE or OFF

What is the part in MOV’s that provides the mechanical drive to open and close valve?

• Gearbox

• squirrel cage Motor

• Limit switch

• Control switch

What is the function of the gearbox in MOV’s is?

• Allow mechanical operation of the valve

• Set the actuator motor drive limits

• Mechanical drive to open and close the valve

• to choose LOCAL, REMOTE, LOCAL & REMOTE or OFF

What is the part in MOV’s allows mechanical operation of the valve?

• Gearbox

• Motor

• Limit switch

• Control switch

Why the gearbox filled with oil?

• Prevent over temperature damage

• To reduce friction

• Let the motor gain full speed before it engages the load

• Disengage from hand drive

What are the O-rings needs for Movs?

• Disengages from hand drive

• Allows the valve to operate at a suitable speed

• To prevent oil from leaking

• Provides two direction control

What is the part in MOV’s that prevent the oil from leaking?

• Worm drive

• Oil seals and O rings

• Worm wheel

• Center column

What is the part in the MOVs adjust and set the torque setting cams correctly?

• Clutch lever

• Torque switch shaft

• Worm drive

• Limit switch

Refer the figure 1, what is the function of part 1?

• Allow mechanical operation of the valve.

• Adjust and set the torque setting cams correctly.

• Drive the transmitted from the motor to the valve..

• disconnect the output shaft from motor driven worm gearwheel

Refer the figure 1, what is the function of part 2?

• Allow mechanical operation of the valve.

• Adjust and set the torque setting cams correctly.

• Drive the transmitted from the motor.

• disconnect the output shaft from motor driven worm gearwheel