Power, air, water and drainage - the install-day checklist that makes commissioning start on day one and protects your warranty.
Between the machine order and the first bottle sits an unglamorous phase that decides everything: preparing the connections. Every Goluwa quote carries a utility schedule - the exact power, air, water and drainage the machine needs. Plants that prepare it in advance commission on day one; plants that improvise spend commissioning week buying stabilisers and digging drains while the crew waits.
This guide walks the four utilities - power, air, water, drainage - and the checklist that turns the schedule into ready connections. It completes the site story started in our location guide, and it protects the coverage described in our warranty guide: wrong utilities are the top warranty void.
The DocumentFour numbers, one page. Your electrician, plumber and compressor supplier each work from the same sheet:
Exact consumption, voltage and phase (three-phase 380-415V above 10 kW typically), plus the breaker and cable size your electrician needs.
Pressure and volume at full production - not averages. Blow machines carry the largest demand; fillers modest.
Process cooling flow for chillers and moulds, product water from the RO, and the temperature bands both circuits must hold.
Floor drains at every wet station, RO reject routing, and the floor flatness the machine's levelling needs.
Undersized cables drop voltage under load - the symptom that looks like a machine fault and burns heaters. The schedule's cable size is a minimum, not a suggestion.
On any grid with swings, a servo stabiliser sized to total load sits between the grid and the machines - per the site guide. It is the cheapest warranty protection you can buy.
A proper earth is not a formality - it protects controllers, operators and the warranty claim. Verify the earth resistance before commissioning day.
If a generator covers outages, decide now which circuits it feeds - filling and RO at minimum, per the site guide.
The compressor matches the schedule's CFM at full cavitation - not average use. Under-sizing is the #1 cause of thin-walled bottles, per the PET line guide.
A refrigerated dryer prevents the moisture that shows up as cloudy bottles. Desiccant dryers for demanding finishes.
Pipe the air in a loop around the plant with take-offs above the line - pressure stays even wherever the machine sits, and future machines connect anywhere.
Air recovery on PET lines cuts compressor energy 20-30 percent - easiest to plumb at installation, painful to retrofit.
Chillers and mould cooling run on their own circuit - treated or filtered to protect the channels, per the mould care guide. Scale here steals cycle time silently.
The RO output feeds the filler directly. Its sizing follows the 1.2-1.5x rule - and it never shares piping with process water.
Chilled water for moulds, ambient for washing - the schedule states both. A chiller sized to the mould load is part of the plant, not an accessory.
Fillers and RO membranes want steady inlet pressure. A small pressure tank smooths the peaks that confuse fill levels.
Wash areas, RO room, chiller plant - each needs its own floor drain at the low point. Retrofitting drains through a finished slab is misery.
RO plants reject 20-40 percent of feed water - route it away from walkways and neighbouring properties before it becomes a dispute.
Floors fall to the drains, not away from them. Standing water is a hygiene and safety problem in every wet zone.
Walk the schedule with your electrician and plumber, tick every line, photograph each connection. Then call us to book the crew - commissioning starts connected, per the service commitments.
Ordering the air set with the machine saves freight, matches the spec exactly, and rides the same 72-hour test. Ordering it later matches nothing.
Assuming the shed's existing single-phase supply will run a three-phase machine. The schedule states the phase - verify it with the utility before the order.
The chiller and the wash basin sharing one line means the mould temperature wanders every time someone opens a valve. Separate circuits, always.
Discovering on commissioning day that the RO room has no floor drain costs a week of jackhammers. Drainage belongs in the site plan, per the location checklist.
The document in every professional quote listing exactly what the machine needs to run: power in kW and voltage, compressed air in bar and CFM, water flow and temperature, drainage, and floor space. It is the interface between your factory and the machine - and your electrician and plumber work from it, not from guesswork.
Typically three-phase 380-415V for machines above 10 kW, single-phase for small units. The schedule states exact kW, phase and breaker size - and on unstable grids, a servo stabiliser sized to the load protects both the machine and the warranty.
PET blow machines need high-pressure air at 30-40 bar, sized in CFM at full cavitation; extrusion blow machines need lower pressure but steady volume. Air quality matters too - a dryer prevents the moisture that causes cloudy bottles.
Two separate circuits: process water for chillers and mould cooling, and product water from the RO for filling. They must never mix. Drainage for the wash areas and RO reject water needs its own planning - floor drains at each wet station.
Yes - commissioning day should connect and run, not wire and dig. Every utility ready per the schedule means the 72-hour test starts on day one and your production starts weeks sooner.
Send your utility schedule questions or photos of your prepared connections - our engineers review and confirm before the crew ships, within 24 hours.