This machine tutorial explains how to operate and troubleshoot commissioning playbook: dry run, wet run, and sat acceptance rules on factory acceptance, commissioning, and operator standard work. It is written for shift supervisors, maintenance technicians, and application engineers who need repeatable procedures—not theory alone.
Machine scope and operating context
Yaoshg field teams use this discipline on presses and converting lines built in Wenzhou—from early stack flexo units through CI, gravure, laminating, slitting, bag making, and paper container equipment. The steps below assume normal safety lockout rules, OEM manual limits, and documented substrate specifications for each job.
Commissioning success depends on separating mechanical verification from process optimization. Dry run confirms motion, interlocks, and safety logic, while wet run validates real substrate behavior and quality output.
Before material enters the line, verify direction conventions for all drives and test emergency stops by zone. Correcting direction logic after threading increases risk and consumes valuable startup hours.
Step-by-step machine procedure
During wet run, start with a robust baseline SKU and avoid difficult edge-case materials. Early wins build operator confidence and create a reference condition for later advanced product tuning.
Factory acceptance on export orders follows dry-run mechanical verification, wet run at agreed speed, and SAT criteria signed with register photos. Operators should participate in FAT—not only engineering managers—because night crew runs the line after install.
Centerlining captures the settings that produced first good output. Without centerline data, every shift restart becomes informal trial and error.
Operator shift checklist
- Complete dry-run mechanical checks before wet stock.
- Capture FAT photos, torque sheets, and sign-off criteria.
- Centerline critical settings after first stable production run.
- Train backup operator on emergency stop and restart sequence.
Common defects and corrective adjustments
SAT criteria should mirror business needs: sustained runtime, scrap limit, and operator autonomy after supplier support leaves site. A one-time short demonstration is not enough for acceptance.
Capture a post-commissioning action list with deadlines for training reinforcement, spare stocking, and preventive maintenance intervals. This closes the gap between project completion and steady-state operation.
SAT disputes usually trace to undefined substrate, ambiguous speed target, or missing utility spec—not hidden machine defects. Resolve assumptions in writing before witness tests.
Maintenance records and when to call service
Store FAT checklists, torque sheets, and training sign-offs with serial number. Update centerline after major maintenance or substrate platform changes.
If mechanical adjustment, drive parameter changes, or repeated defects exceed on-site scope, log serial number, job recipe, and photos before contacting Yaoshg service. Commissioning engineers can remote-review HMI trends when VPN or data export is available—faster resolution when shift records are complete.