Fanuc Robot S-420-iF

Air filter’s gauge indicates zero

Upload a photo of the replaced filter element

Sign off on the filter element replacement

1) Check the following items once every three months. Additional inspection areas and times should be added to the table according to the robot’s working conditions, environment, etc.

Check whether the cable connected to the teach pendant is unevenly twisted.

If the ventilation portion of the control unit is dusty, tum off power and clean the unit.

Check the following items at the first quarterly inspection, then every year thereafter.

Check whether the jackets of the mechanical unit cables are damaged. Also check whether the cables are excessively bent or unevenly twisted. Check that the connectors of the motors and connector panels are securely engaged.See section 7.2.

Clean each part (remove chips, etc.) and check component parts for cracks and flaws.

Further tighten the end--effecter mounting bolts and external main bolts.

Grease to the balancer bushing. Refer to item 3.2. in every 6 month;

1) Replacing J4--axis motor (M4)

1 Set the posture of the wrist such that no load is applied to the wrist axis.

4 Remove four bolts (M12 x 40 2pcs, M12 x 55 2pcs) for mounting the motor, then the motor.

5 Remove the nut and take out the center gear.

6 Replace the motor with a new one. And reassemble it in a reverse order. Also replace the O--ring (as a precaution). Apply Locktite No. 242 to the threaded portion of the motor shaft. Be sure to mount the O- -ring at the appropriate position. Pay special attention so as not to scratch the tooth face of the super gear.

7 Apply grease to the motor (Refer to section 3).

8 Perform mastering (Refer to section 5.3).

1) Replacing J6--axis motor (M6)

1 Remove loads from the robot’s wrist such as a hand and workpieces.

2 Turn off the power at the position of J5=--90 degrees.

3 Remove the cover, motor cover and cable connectors.

4 Remove J5--axis cover 2, a plate, a grommet and a clamp. (Do not remove plate and Teflon sheet attached to the J5--axis cover 2).

5 Remove rubber block mounting bolts and take out the cable.

6 Remove four bolts (M8×22) for mounting themotor, then remove the motor.

7 Remove the nut, input gear and the draw bolt.

8 Replace the motor with a new one. Reassemble the removed components. Polish the motor flange with oil stone. Apply Locktite No. 242 to the threaded portion of the motor shaft. Be sure to mount the O--ring at the appropriate position. Pay special attention so as not to scratch the tooth face of the input gear. Use new motor mounting sealbolts.

Check the following items once every year.

Replace battery in the mechanical unit.

Cleaning each parts and inspection

Tightness of major external bolts

Greasing of balancer joint bearing

Supply grease to the bearing (only for the S--420i R). (See Section 3.2.)

Replace filter elements in the air filter unit.