The document provides a detailed troubleshooting guide for manual and motorized operation of auma actuators, including the dismantling and reassembly procedures. It outlines specific steps for removing components like the hand wheel, limit switch, and actuator shaft, along with instructions for replacement parts and final assembly. Additionally, it emphasizes the importance of checking the manual operation and setting the limit switches after completing the process.

1. AUMA ACTUATOR
TROUBLESHOOTING FOR
MANUAL & MOTORIZED
OPERATION
- NISCHAL POPAT
Assistant Manager
– DCM Shriram Ltd.

2. ACTUATOR PARTS DETAILS
Clutch Fork Torque Switch Drive
Clutch Ring Tripping Arm

3. ACTUATOR PARTS DETAILS
Return Spring Retainer Ring
Limit Switch Drive Hollow Shaft

4. 1. ACTUATOR DISMANTALING
PROCEDURE

5. HAND WHEEL REMOVAL PROCEDURE
• Open a bolt which is given below hand wheel.

6. HAND WHEEL REMOVAL PROCEDURE
• Now remove retainer ring (which will be
inside) through armor wire.

7. HAND WHEEL REMOVAL PROCEDURE
• When retainer ring get came out, rotate hand
wheel manually. And hence hand wheel will
get came out.

8. REMOVE CIR-CLIP THROUGH CIR-CLIP
PLIER.

9. REMOVE INSIDE SPRING.

10. 2. LIMIT SWITCH SIDE
PROCEDURE

11. REMOVE THE COUNTER GEAR BY
OPENING ITS 4 BOLTS.
(Bolts are at upper side of limit switches)

12. OPEN ALL LIMIT SWITCH BOLTS &
KEPT LIMIT SWITCH ASIDE.

13. OPEN ALL LIMIT SWITCH BOLTS &
KEPT LIMIT SWITCH ASIDE.

14. PULL OUT COUNTER GEAR
MECHANISM.

15. OPEN RGU (Reduction Gear Unit)

16. OPEN PINION & SPRING WHICH IS
MOUNTED ON LSD (Limit Switch Drive)

17. OPEN LIMIT SWITCH DRIVE

18. 3. SHAFT SIDE ( OPPOSITE SIDE OF
HAND WHEEL)

19. OPEN THE ACTUATOR SHAFT SIDE
PORTION.

20. REMOVE SPRING, AND FURTHER
REMOVE CLUTCH RING.
Damaged
Clutch Ring

21. REMOVE HOLLOW DRIVE SHAFT, WHICH
WILL COME OUT FROM SHAFT SIDE.

22. REMOVE TRIPPING ARM, BY OPENING
BOLT WHICH IS CONNECTED WITH IT.
(Bolt size = 12)
Bend
Tripping Arm

23. REMOVE RETURN SPRING (RETURN SPRING
IS CONNECTED WITH SUPPORT OF TWO NOS
OF INSIDE HOOKS).

24. CHECK ACTUATOR SPUR GEAR.
(Check & Replace If Motorized Operation Is not
working.)
Damaged
Spur Gear

25. WARM SHAFT – WHICH WILL ROTATE IN
MOTORIZED OPERATION ONLY.

26. CONNECT RETURN SPRING AND NEW
TRIPPING ARM.

27. 4. ACTUATOR BOX-UP PROCEDURE

28. CONNECT TSD
(Torque Switch Drive).

29. CONNECT HOLLOW DRIVE SHAFT.

30. APPLY GREASE IN ACTUATOR.

31. INSTALL NEW CLUTCH RING &
FURTHER SPRING.

32. INSTALL CLUTCH RING & FURTHER
SPRING.

33. PROVIDE CIR-CLIP.

34. INSTALL MANUAL HAND WHEEL WITH
RETAINER RING, CIR-CLIP & INSIDE
SPRING.

35. INSTALL PARTS OF LIMIT SWITCH
COMPARTMENT (Do not forget to install
pinion & pinion spring in LSD).

36. INSTALL LIMIT SWITCH DRIVE
COUNTER GEAR ON PINION & PINION
SPRING.

37. INSTALL LIMIT SWITCH (ALL 4 NOS.)
ON LSD.

38. INSTALL TORQUE SWITCH
INSTALL SPUR GEAR

39. INSTALL RGU (Reduction Gear Unit)

40. • Final Box Up Completed.
• Check Manual Operation.
• Set Open and Close limit switch and
confirm both open and close limit switch
operation.

41. THANK YOU