Type of Problems
1.Pressure does not develop.
2.Pump Noise Problem.
3.High Oil Temperature.
4.Chuck Clamping/De-clamping Slow.
5.Chuck or Quill cylinder does not move.
6.Pressure drop during Quill or Chuck Function.
7.Oil leakage from electric motor.
8. Tripping due to pressure drop
Possible Reason/ Trouble Shooting
1.Pressure does not develop or No Flow.
| A. Wrong Oil Grades. |
| B. Low Oil Level. |
| C. Wrong Electric Motor rotation. |
| D. Suction Stainer dirty. |
| E. Air in Suction. |
| F. Drain Cock in open condition. |
| G. Faulty Pump |
| H. Oil temperature too cold. |
2.Pump Noise Problem
| A. Wrong Oil Grade. |
| B. Oil Temperature too High. |
| C. Low Oil Level. |
| D. Suction Stainer Dirty. |
| E. Air in Suction. |
| F. Oil foams |
| G. Faulty Pump. |
3.High Oil Temperature
| A. Low Oil Level. |
| B .Drain Cock not fully closed. |
| C. Accumulator Nitrogen pressure low or Zero. |
| D. High chuck Cylinder leakage. |
| E. Faulty pump. |
| F. Manifold may be faulty or internal leakage in manifold. |
4.Chuck Clamping/De clamping Slow
| A. Drain cock not fully closed. |
| B.Accumulator Nitrogen pressure low or Zero. |
| C. Faulty pump. |
| D. Direction Control valve faulty. |
5.Chuck or Quill cylinder is not moving
| A. Drain cock is not fully closed. |
| B. Directional Control valve is not energized by solenoid coil. |
| C. Directional control valve is faulty. |
6.Pressure Drtop during Quill or Chuck function
| A. Accumulator Nitrogen pressure low or Zero. |
| B. Accumlator is faulty. |
7.Oil leakage from electric motor
| A. Leakage from Oil seal. | |
| B .Return line filter may be choked. |
8.Mpcb Tripping due to pressure drop
| A.MPCB may be tripped because due to pressure drop hydraulic motor’s current withdrawn will be high. |
| B. Accumulator Nitrogen pressure zero or low. |
| C. main line pressure switch setting high-need to be set. |
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These blogs should not be considered as official repair or service manuals. For detailed instructions, critical repairs, or advanced troubleshooting, it is always necessary to contact and work under the guidance of the respective *machine manufacturer* or *CNC controller support team*.
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