Assembly done is only the start; every pre-dispatch step keeps uncertainty behind the factory gate.
Many buyers assume a machine is nearly ready to ship once it is assembled and powers on. In reality, assembly is only the starting point. From the moment the line comes off the floor until it is loaded onto a truck, it still passes through assembly re-check, electrical and pneumatic inspection, dry run, loaded trial production, burn-in, precision verification, safety testing, documentation, protective packing, and factory acceptance.
Every step skipped at the factory becomes make-up work on the customer floor: jams, unmet cycle time, missing spares, drawings that do not match the machine, and a commissioning period that drags on while production stays offline.
The core point is simple: how thoroughly pre-dispatch preparation is done decides whether the machine lands and starts producing, or lands and starts firefighting. Below is the process, organized in four stages.
01 Inspect Before You Run: Assembly, Electrical and Pneumatic Re-Check
The first job after the machine comes off the floor is not to start it, but to re-check everything already assembled. Fasteners can loosen and connections can look solid while remaining weak; this stage keeps structural issues from reaching the power-on stage.
Assembly re-check: retorque fasteners, organize air lines and cables, verify panel labels, replenish lubrication, and confirm supply-air pressure is within range. Target: no looseness, no mechanical interference, clean and orderly routing.
Electrical and pneumatic inspection: verify terminals, grounding, breakers and circuit continuity; test each solenoid valve action; check pressure gauges. Target: no loose connections, no air leaks, every line and air circuit clearly accounted for.
These basic steps are the precondition for every later test to be meaningful: if the mechanical and electrical base itself has not been cleaned up, no run result can be trusted.
02 Dry Run First, Then Real Parts: From No-Load Motion to Trial Production
Only after the machine is cleaned and checked may it be energized. Testing follows a strict order: single stations first, then full-line interlock; empty run first, then real material. Reverse the order and a fault becomes hard to trace back to its source.
Single-station function test: run loading, grippers, conveyor, vision alignment, press and inspection stations one by one; confirm each reaches its position and every sensor signal is correct.
No-load interlock dry run: run the full line empty for several hours; observe overall cycle, noise, heat rise and alarm response; confirm no jams and no false alarms. The dry run answers whether the mechanisms cooperate.
Loaded trial production: run actual production with the customer samples or standard parts; verify that assembly, insertion and packing processes actually work, and trace every defect back to a specific station.
Yield and cycle-time verification: record consecutive output yield, per-unit cycle time (CT) and changeover time against the agreed targets.
Continuous burn-in: run the line non-stop for 8 to 24 hours, monitoring failure rate and product consistency to surface early looseness, overheating and false alarms. Passing burn-in proves it is not "running this once," but "holding steady."
In loaded trial, yield and cycle time are recorded station by station before the line passes.
03 Lock In Stability: Precision, Repeatability and Safety
Once the line runs, the qualified state must be fixed rather than left as "this time it happened to work."
Precision and repeatability check: re-measure key parameters such as positioning, press depth and insertion position; sample products for consistency. Once verified, save and lock the running parameters and recipes so the same result can be reproduced on every call-up.
Safety function test: test E-stop, door interlock, light curtain, audible-visual alarm and power-recovery logic one by one; triggers must be reliable and reset normal. This determines whether the line can later be approached and run continuously on the customer floor with confidence.
04 Make It Easy to Take Over: Documentation, Spares, Packing and Acceptance
The machine itself being qualified is only half the delivery job. Whether the customer can take over smoothly on arrival depends on this final group of preparations.
Cleaning and appearance: remove grease, apply rust protection, wipe covers, touch up nameplates; leave the machine clean, free of burrs and scratches.
Spares and special tools: prepare wear parts (grippers, nozzles, seals, fuses) and special tools separately; count each item against the packing list before it goes in the crate.
Documentation package: operating manual, maintenance manual, electrical and pneumatic drawings, parameter recipes and spare-parts list, all matching the machine version, so drawings never disagree with the physical machine on arrival.
Protective packing: cushion precision parts against shock and moisture, secure the machine, use a reinforced crate and moisture-proof film suited to road or sea transit.
Factory Acceptance Test (FAT): invite the customer on-site or remotely to check every item against the acceptance standard; sign off on both sides before dispatch.
Shipping: load and secure, protect against moisture, arrange transit insurance, and prepare handover notes so the machine neither shifts nor absorbs moisture on the way.
05 Three Common Misconceptions to Clear Before Dispatch
Misconception 1: "If it runs, it can ship." A clean empty run does not equal a qualified loaded run. Empty-run smoothness only proves the mechanisms cooperate; what decides production value is yield and cycle time on the customers actual material.
Misconception 2: "Leave debugging for the customer site." The site is for landing, not for catching up. A problem not solved at the factory only costs more and takes longer once material, people and environment are unfamiliar.
Misconception 3: "Packing is just shrink wrap." Long-distance vibration and sea humidity test the packaging. Poor packing can undo the stability that hours of testing established.
06 Three Questions Worth Asking at Acceptance
Buyers checking delivery or suppliers doing a self-check can use these three questions to judge readiness quickly:
Can it run? Does loaded trial meet target consecutively, and are yield and cycle time reproducible on site?
Does it hold? Is burn-in low-fault, are parameters locked, and is changeover backed by a standard recipe?
Is it ready to take over? Are manuals, spares and tools complete, so the line can be uncrated and run on arrival?
When all three have definite answers, the machine is truly ready.
Frequently Asked Questions
Q1. Does the machine need to run with our own parts before it ships?
Yes. A clean empty run only proves the mechanisms move together. The line should run a loaded trial with your actual samples, so the real assembly, insertion or packing process and its yield can be verified on the shop floor before delivery.
Q2. How long should the continuous burn-in last before dispatch?
It varies by machine, but a common practice is a continuous run of several hours to a full day (often 8–24 hours) without stopping, monitoring failure rate and product consistency. The exact duration should follow what both parties agreed in the order.
Q3. What is a Factory Acceptance Test (FAT), and does the buyer need to be there?
FAT is the final on-site check against the agreed acceptance criteria before shipping. The buyer can attend in person or join remotely, review the results, and sign off. Only after both sides agree should the line be released for dispatch.
Q4. What documents and spares should arrive with the machine?
Typically the operating and maintenance manuals, electrical and pneumatic drawings, saved parameter recipes, a spare-parts list, plus common wear parts (grippers, nozzles, seals, fuses) and any special tools, all counted against the packing list.
Q5. How is the machine protected for sea freight or long-distance transport?
Precision parts are cushioned separately against shock and moisture, the machine is secured inside a reinforced crate with moisture-proof film, and transit insurance is arranged. The goal is that vibration and humidity do not undo the stability established during testing.
Q6. What if the yield or cycle time is not met before shipping?
It should not ship. Problems solved at the factory cost far less than the same problems on the customer floor, where material, people and environment are all unfamiliar. The line is released only when the agreed targets are reproducible.
Closing: Steps Vary by Machine, but the Standard Cannot Be Skipped
Note that emphasis differs by equipment: assembly lines, insertion machines and inspection-packing lines each watch different stations and parameters, and burn-in duration, yield and cycle targets should follow what was agreed by both parties. This article offers a universal pre-dispatch framework, not uniform numbers.
In the end, every pre-dispatch step keeps uncertainty behind the factory gate. The customer pays for the machine; what they actually receive is the result of stable production after arrival.
Which step usually trips up your machine on arrival — trial yield, cycle time, or documentation handover? Share a delivery experience in the comments, and let us break it down together.
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