Water Bottle Filling Machine Commissioning and Run-In Checklist

A new water bottle filling machine should not be pushed to full speed on the first shift. Commissioning is the controlled process of proving installation, safety, hygiene, bottle handling, filling and capping before the line is released to production. A careful run-in period reveals loose fasteners, transfer misalignment and unstable settings while they are still easy to correct.

The checklist below is written for an automatic PET bottled-water line, but the same discipline applies to many rotary rinsing, filling and capping systems.

Before power-on: verify the installation

• Confirm the machine is level, anchored as specified and correctly aligned with conveyors.
• Remove shipping brackets, temporary supports and packing materials.
• Check that guards, doors, interlocks and emergency stops are installed.
• Verify supply voltage, phase sequence, grounding and cabinet conditions.
• Confirm compressed-air pressure, filtration and dryness.
• Flush product water, rinse-water and CIP pipes before connecting them to the machine.
• Check drains for capacity, slope and hygienic routing.
• Verify lubricant type and level at every specified point.
• Install the correct bottle and cap change parts.

Do not use a motor rotation test as a reason to bypass guards. Each motor should be jogged under the supplier’s procedure, with pumps protected from dry running.

Stage 1: static and safety checks

Before automatic operation, test every emergency stop, guard switch and safety circuit. Confirm that the machine cannot restart unexpectedly when power or air returns. Review the HMI user levels and make sure operators cannot alter protected settings without authorization.

Manually inspect star wheels, guides, bottle-neck supports, filling valves and capping heads. Rotate the machine slowly using the approved inching function and look for interference. A small transfer mismatch at low speed becomes broken bottles, scuffed necks or repeated jams at production speed.

Stage 2: dry run without bottles

Run conveyors and the main drive at low speed. Listen for abnormal gear, bearing or chain noise. Check lubrication, motor current, pneumatic leakage and the behavior of the machine at start, stop and emergency stop.

Verify sensors individually. A missing-bottle sensor, low-cap switch or conveyor-backup sensor should produce the correct response and a clear message on the HMI.

Stage 3: bottle and cap handling trial

Introduce a small number of empty bottles without filling. Watch each transfer: air conveyor to rinser, rinser to filler, filler to capper and machine discharge to conveyor. Check for neck damage, bottle swing, base drag and unstable handover.

Load closures into the elevator and sorter. Inspect cap orientation, chute pressure and the action of the capping head. Measure applied torque using an appropriate test method rather than judging tightness by hand.

Stage 4: cleaning and water trial

Clean and sanitize the product-contact circuit according to the approved procedure. Confirm chemical concentration, temperature, contact time and final rinse result. Check that the system drains completely and that no chemical can enter production water.

During the first filling trial, use treated product water. Inspect valve opening, bottle centering, fill level and splash. Sample bottles from all filling valves; a repeated high or low result from the same valve is more informative than an overall average.

Stage 5: increase the load in controlled steps

A practical ramp may begin at 20–30% of rated speed, then progress to 50%, 75% and the agreed test speed. Hold each step long enough to stabilize the conveyors and collect measurements. Do not increase speed while unresolved jams, foam, loose fasteners or abnormal temperatures remain.

HZM’s water filling line overview can help buyers place the monoblock within the complete treatment, bottle handling and packaging process.

Daily checks during the first production weeks

• Inspect oil and grease points and record any leakage.
• Check loose fasteners, chain tension, guide position and abnormal vibration.
• Review alarm history instead of resetting repeated faults without investigation.
• Trend fill weights, cap torque and rejected bottles.
• Inspect filling-valve seals and capper wear parts.
• Confirm cleaning records and microbiological results.
• Keep a single approved record of changed parameters.

Common run-in mistakes

Running above the available upstream or downstream capacity creates false filler faults. Excess conveyor pressure damages light bottles. Untrained operators may change several settings at once, making the real cause impossible to find. Delaying lubrication or continuing after an unusual sound can turn a minor adjustment into a damaged bearing or shaft.

When the machine is ready for handover

Release the machine only after it sustains the agreed net output, fill tolerance and closure quality; all safety functions pass; operators complete training; and manuals, drawings, backup files and spare-parts lists are delivered. Open issues should have an owner and completion date.

A run-in period is not simply a number of operating hours. It is a documented progression from safe installation to stable, repeatable production.