Ask most suppliers what should arrive with gallium arsenide production-line equipment and you will get the same answer: a manual, a certificate, and a parts list. That answer is not wrong, it is just too small to be useful. A wet-process line that etches a release layer and separates a gallium arsenide film from its substrate is a system of stations, utilities, consumables, and safety boundaries. The paperwork that travels with it is the only thing that lets a second shift, a second engineer, or a second site repeat what the first one achieved. Here is the set of documents worth asking for by name, and the reason each one earns its place in the box.
Start with an as-built record, not the sales proposal
The proposal describes what was offered. The as-built record describes what is standing on your floor. Ask for a configuration sheet that lists each station with a serial number, the options actually fitted, the control software version, and the revision date of the drawing set that matches the machine. Anything quoted as standard but delivered differently should show up here as a change note with a date. If the vendor cannot produce an as-built record, the machine has no reference state, and every later conversation about spare parts, software updates, or warranty claims starts from zero.
Utility and interface documents belong to the line, not to the building plans
Delivery should include a connection schedule that states, station by station, the power supply each unit expects, the water quality and connection type for each bath or rinse stage, the exhaust or vent demand, and the drain routing. The reason this document matters on a wet-process line is that the interfaces are where damage happens. A bath stage drained to the wrong route, or a stage fed water outside its stated quality band, creates problems that show up weeks later as deposits, corrosion, or drifting process results, and by then no one can say which interface caused it. Ask for the schedule to name the connection points by tag number so your facility team can check the wall against the paper, not against a memory of the commissioning visit.
Include a drawing or list that shows the service envelope: door width and turning clearance for removal and reinstallation, the space needed for maintenance access, and the parts of the structure the machine relies on. These facts decide whether the line can be moved, serviced, or expanded, and they are nearly impossible to recover once the machine is bolted down.
Chemical and bath handling documents define the boundary of safe operation
A line that etches a release layer works with process chemicals, and the delivery file should contain a safety data sheet for each chemical the process expects, the handling and dilution instructions the vendor assumes will be followed, the storage compatibility notes, and the disposal or neutralization route the vendor designed the line around. If the vendor's assumption is that you will hold a permit or run a neutralization step, that assumption belongs on paper and signed by someone responsible on your side.
Write down, in the same file, the list of components that must never be sprayed, washed, or exposed to process liquid: electrical enclosures, junction boxes, sensors and encoders, cable chains and connectors, bearing and guide surfaces carrying a lubricant film, bonded insulation, and vents or breathers. This no-spray list is not a formality. It is the document your cleaning and housekeeping team will use, and it should be signed by the person who owns the equipment, not left to be inferred from a diagram.
Commissioning records should prove conditions, not just outcomes
A single sheet that says the line passed is worth little a year later. Ask for a commissioning file that records the as-found state before adjustment, the settings at the moment of acceptance, the duration of the run used to demonstrate stability, and any deviation, alarm, or reset that occurred during it. Where the machine has protection functions, the file should show that each one was exercised and what it did, rather than listing protection features from a catalogue. If a stage was run at a reduced load for the demonstration, say so in the record. A baseline that quietly assumes full load is a baseline your production data will fail.
Process recipes and their version history are the most copied and most lost documents
Ask for every recipe loaded onto the machine at delivery, with a version number, a date, and a plain statement of which recipe is the shipping baseline. Then ask for the parameter ranges inside which the vendor will still support the machine, and the point at which a change becomes your responsibility rather than theirs. Recipes drift. An engineer trims a dwell time, a temperature set point, or a bath concentration, and six months later nobody can reconstruct which version produced the good week and which produced the bad one. A version table, kept with the machine, is cheaper than that argument.
Wear items and consumables need part numbers and lead times, not assurances
Every part with a service life should appear in the delivery file with a part number, a stated replacement interval, and a lead time. That includes seals, bath liners and filters, nozzles, hoses and fittings, heating elements, and anything the vendor fabricates in-house rather than buys. Where a part has no supplier number because it is a local fixture, say so plainly and include the drawing that would let a second machine shop make it. A line that stops because one unnumbered gasket cannot be replaced is not down for technical reasons; it is down for paperwork reasons.
Calibration and traceability give your measurements a history
Thermocouples, pressure gauges, flow meters, timers, and controllers all carry an accuracy claim, and the file should record the calibration date, the method, and the interval the vendor recommends. Ask which readings the machine logs by itself, whether those logs can be exported in a format your quality team can open, and whether a log entry can be tied to a recipe version, a shift, and an operator. That link is what turns a machine log into evidence when a batch is questioned.
Safety documentation should name the hazards this line creates
Ask for the risk assessment behind the guarding, the lockout and tagout points with their locations marked on a drawing, the emergency stop zoning, and the interlocks that decide what happens when a guard opens mid-cycle. Include the noise and temperature exposures at reachable surfaces, and the personal protective equipment the vendor assumes operators will wear at each station. A general safety statement in the front of a manual does not help an operator deciding whether to reach into a stage. A page that says which surfaces are hot, which motions can restart, and which openings must stay closed does.
Training records should show who can do what
Ask for the training materials as editable source files rather than only printed copies, plus a sign-off sheet that names the people trained, the tasks they were trained on, and the date. Distinguish operation from maintenance from chemical handling; a person cleared to run a line is not automatically cleared to service it. When your own staff train the next intake, keep their sign-offs in the same file so the record does not end with the vendor's visit.
Acceptance criteria and spares turn delivery into an obligation
Before the machine is accepted, both sides should sign a short document that states the checks to be performed, the measurable condition each check must meet, who signs each line, and what happens when a check fails. Keep the wording verifiable: a named surface free of residue, a named stage holding a stated value within a stated band, a named interface confirmed dry. Write the warranty terms in the same plain style, naming what is covered, what a wear item is, how a claim is opened, and how quickly a response is expected. Pair the acceptance sheet with the spares list, and treat a line item that says only "as required" as a gap to close before signature, not after.
Keep the file in the place the machine lives
A single binder stored in an office is a single point of failure. Put a controlled copy at the line, keep the editable originals in your document system with a revision log, and require that any change to a recipe, a setting, or a protection function be written in with a date and a name. That habit is what makes the rest of the file worth having: the documents stop describing the machine as it was built and start tracking the machine as it is used.
If your line is a built-to-order configuration rather than a catalogue machine, the same file still applies; only the effort to produce it changes. Where interfaces, chemical handling, and acceptance conditions have to be defined jointly with the builder, that work is normally handled by an integrated engineering team working alongside your own engineers, and the document list above becomes the shared checklist. For lines that must be matched to a site's utilities and permits rather than selected from a range, the same facts go into a site survey before any quotation is meaningful. To start that conversation, use the PowerDe contact page.
