A company had a problem with a coating and slitting line. The clamp function was slow and weak. The hydraulic power unit had two circuits, each with its own pump, and the pumps were identical. One pump could handle the load if the other one failed. The two circuits were not cycled at the same time. There was also an overheating problem with the oil.
The company tried shutting down the clamp pump and opening the ball valve connecting the shear pump as its back-up. Pressure remained low and the closing speed on the clamp dropped.
Any idea what the problem(s) could be?
Think you know the answer to this month’s problem? Submit your solution to [email protected], with “July Aug Hydraulic Solution” in the subject line.
All correct answers submitted by Sept. 15, 2021 will be entered into a random drawing. The winner will be notified and their name will be printed in a future issue.
Bob Sheaf is the founder of CFC Industrial Training, Fairfield, Ohio. He and his company have been involved in troubleshooting, training and consulting internationally for more than 30 years. For more information, call (513) 874-3225, or visit cfcindustrialtraining.com.
