Changes in machine noise are useful diagnostic evidence when paired with the operating conditions. Compare the sound with the normal baseline for the same machine, mold, recipe and cycle stage.
Record the Conditions
Note when the sound began, whether it appears during startup, clamping, injection, recovery, indexing or ejection, and whether it is continuous or intermittent. Include alarms, oil temperature readings and recent changes where available. Follow the site response procedure for new or severe symptoms.
Direct the Service Review
Qualified service personnel can use the recorded conditions to distinguish hydraulic, drive, tooling and handling sources. They should check the manufacturer’s approved fluid, oil level and filtration criteria where relevant, and review alignment, mounts or moving assemblies using the applicable service procedure.
Verify the Outcome
Record the confirmed cause and the work performed. Compare the machine under the same duty after the approved restart and log any remaining deviation.
See the fault reporting checklist and hydraulic oil condition guide.
