What the floor space actually has to absorb
Start with the physical envelope, and be precise about which figure is a machine dimension and which is a service envelope. A footprint on a datasheet rarely tells you how much clearance an operator needs at a door, a cassette load port or a service panel. Ask the supplier for the access dimensions, not only the outside dimensions, and check them against the route from the loading dock to the position: door widths, lift capacity, turning radii, and the height of anything overhead in that route.
Weight comes next, and it is the question most often answered too late. The transport weight, the operating weight and the floor loading limit of the target level are three different numbers. If the tool is going to an upper floor, confirm with the building engineer rather than with the equipment vendor, and get the answer before the layout is drawn.
Electrical, and how much headroom you are assuming
Ask for the connected load, the expected running draw and the supply voltage and phase the tool is configured for. Those three items decide the distribution work, and a mismatch discovered after the panel schedule is issued becomes an unplanned change order. Also confirm what the supplier expects for protection and isolation, and whether the tool needs a dedicated circuit or can share one.
Power quality deserves one explicit question: what tolerance does the control system have to supply variation, and does the supplier recommend any conditioning at the tool. This is the sort of requirement that appears in the manual in small print after the machine has arrived.
Process utilities: gases, water and vacuum
List every utility the tool consumes, and for each one get the required pressure or flow, the required purity, and the connection type. Process equipment is rarely satisfied by whatever the plant already distributes; purity and filtration expectations in particular drive piping and point-of-use treatment that nobody budgets for by default.
Two questions to ask in the same pass: how much of each utility the tool draws in a steady cycle versus during a start-up or purge step, and what happens if a utility dips during a process step. A brief dip that does not harm a mechanical machine can scrap an entire batch. Those answers belong in the utilities specification and, later, in the operator escalation instructions.
Exhaust, temperature and the heat the room has to remove
Get the exhaust flow the tool needs and what it should be extracted through, including whether any process step generates vapour or particulate that needs its own route rather than general dilution exhaust. The ductwork to an existing header is a building job, and it is always on the critical path, since it cannot start until the route is fixed.
Ask what heat the machine rejects under normal duty. A tool that runs hot changes the HVAC load of the room, and a room designed for a nominal load will drift in temperature and humidity, which matters in any process where film, lamination or coating behaviour is being controlled.
Compression, humidity and cleanliness of the space
For alignment-sensitive work, the room conditions are part of the process. Specify the temperature and humidity band the tool and the process both need, and ask whether the supplier expects vibration isolation, level mounting, or a particular floor flatness. Where a tool uses a chamber or an inert atmosphere, the chamber itself is a controlled space; where a process is sensitive to ambient particulate, the room classification is what controls yield.
Where the process needs a controlled or inert working volume, that requirement should be stated in the enquiry rather than assumed. For this kind of work, semiconductor process equipment should be discussed with the manufacturer's engineering team early, because chamber size and atmosphere handling change both the machine configuration and the room services.
Waste, effluent and permit questions
Ask what the tool discharges: liquid effluent, condensate, spent gas, or solid waste from a process step. Each has a handling route, and each has a permit consequence. Getting a written discharge list lets your site team decide whether existing treatment and collection covers the tool, or whether something new has to be permitted. Permit lead times are longer than equipment lead times more often than teams expect.
What the supplier needs from you
The same list runs in reverse. Suppliers commission faster when the buyer hands over a site sheet: available supply, utility points and their measured performance, exhaust capacity, floor loading, room classification and the access route. Ask the supplier for their own installation checklist and treat it as a document to be completed and returned, not as advice.
If your process needs a non-standard configuration, agree in the enquiry which requirements are the manufacturer's responsibility and which remain yours. Where the tool is being built to a specific process rather than taken from a standard catalogue, that split should be written into the order. Raising this early is easiest when the site conditions are handed over with the enquiry, as on the custom equipment route, where the room and the process become part of the specification from the first conversation.
Commissioning and acceptance at the installation
Agree before order what the acceptance test is, how long it runs, and which site services have to be present for it to be valid. A commissioning visit that has to leave early because an exhaust route or a gas connection is unfinished costs the same mobilisation twice. Fix the prerequisites, name the person on site responsible for each one, and hold a short readiness review a few days before the engineer arrives.
Finally, keep the record. Once the tool is running, note the utility readings and room conditions that produced acceptable results at acceptance. That baseline is what you compare against months later when a process starts to drift, and it is the reason two identical tools in two different rooms do not always behave the same way.
