I. Basic Information
Service Location: On-site at the customer's facility in SloveniaService Type: Equipment maintenance
Equipment Model: YH Waterjet Cutting Equipment
II. Fault Symptoms & Troubleshooting Process
Fault Symptoms:
High-pressure pump malfunction (self-lock button, power switch, and high-pressure ring damaged); data cable required reconnection.
Troubleshooting Process:
The high-pressure pump failed to start. Inspection revealed a faulty self-lock button and a short-circuited power switch. After replacing the damaged parts, the pump’s pressure stability was tested.
The data cable had poor contact. It was re-soldered and wrapped with an insulation layer.
III. Repair Plan & Implementation
Replaced / Repaired Components & Implementation Details:
Replaced the high-pressure pump self-lock button, power switch, high-pressure ring, data cable, and the aged data cable between the high-pressure pump and CNC control cabinet.
Replaced damaged electrical components, re-soldered data cables, tested signal transmission stability, and fully replaced aged cables to ensure interference-free operation.
Tools & Spare Parts:
Used customer-provided spare parts (such as cables and screws) and personal toolkits (such as multimeters and torque wrenches).
Repair Duration:
The entire project was planned for 2 days but was completed 1 day ahead of schedule due to efficient spare parts coordination.
IV. Maintenance Effect Verification
Full Machine Testing:
Continuous operation for 3 hours with cutting pressure stability (error within ±1MPa). Platform movement was smooth without any sticking.
Customer Acceptance:
On-site cutting test of 6mm stainless steel sample; cutting edges were smooth and ripple-free, meeting production requirements. The customer signed the acceptance form.
V. Customer Feedback
Customer’s Comment: “Thanks to the engineering team for their efficient maintenance! From fault diagnosis to full recovery, it only took 1 day—well beyond our expectations. Especially the precision tuning of the equipment, which perfectly meets our production requirements. Looking forward to continued cooperation in the future!”