Follow the machine manual and isolation procedure

Maintenance, cleaning and adjustment around moving, cutting, sealing or hot parts must be completed by competent people using the machine instructions and the site’s safe system of work. Never defeat guarding or interlocks to shorten a changeover.

Build maintenance around condition and production consequence

A useful plan combines the manufacturer’s instructions with the actual product, film, environment and operating hours. Food crumbs, film dust, moisture, adhesive transfer or abrasive products can change inspection and cleaning needs. Tasks should state frequency, safe method, acceptance limit, responsible role and required record.

Separate routine checks from intrusive maintenance

Operator checks can cover cleanliness, film path, sensor faces, unusual noise, belt condition, guard function, pack quality and visible damage. More intrusive inspection of sealing jaws, knives, bearings, drives, electrical equipment and safety functions belongs to trained maintenance personnel at controlled intervals.

Treat changeover as a repeatable production process

Identify and store format parts, use the approved recipe, verify the former and guide positions, load the correct film, teach registration only by the approved method and complete a first-off pack check. Record deviations rather than adjusting the accepted recipe without control.

Plan spares by failure consequence and lead time

Classify wear and critical items from the actual machine bill of materials and operating experience. A practical plan distinguishes routine consumables, change parts, condition-monitored items and components whose failure would stop production. Part numbers, machine serial number and photographs should be retained to avoid incorrect supply.

Use defects and downtime to improve the plan

Record fault category, duration, affected format, failed component, temporary action and permanent correction. Repeated seal, tracking or feed issues may indicate a material or setup problem rather than a component replacement. Use the approved pack and last-known-good settings when reviewing recurrence.

Controlled routine

Examples of maintenance evidence to retain

Flow-wrapper maintenance and changeover records
Activity	Record	Reason
Pre-start inspection	Guard status, cleanliness, film path, visible damage, sensor condition and approved recipe.	Detect obvious conditions before product and film are wasted.
First-off approval	Product position, seals, cut, registration, code and reference-pack comparison.	Release the format before sustained production.
Planned maintenance	Task, measured condition, parts used, settings disturbed, test result and person completing the work.	Show that the machine was returned to an accepted condition.
Format change	Parts installed, recipe, film, guide positions, first-off result and exceptions.	Make changeover repeatable and trace unexplained variation.
Breakdown response	Symptom, evidence, root cause, temporary action, permanent correction and follow-up check.	Prevent repeated part changing without understanding the fault.

Changeover checklist

Return the machine to a known accepted format

Before stopping

Confirm the next product, film and recipe
Prepare identified clean change parts
Record current production issues
Plan material clearance and isolation

During changeover

Use the approved safe method
Inspect and clean accessible product and film paths
Fit parts and guides to recorded positions
Check sensors, guards and tools removed

Before release

Confirm recipe and film identity
Run first-off packs at controlled speed
Approve seals, cut, print and code
Record deviations and release decision

Connect maintenance to support and acceptance records

The service page explains the support evidence to send, while the acceptance guide shows how approved settings and packs should originate.

Protect repeatability

Keep the serial number, format record and parts evidence together

Lancing can use accurate machine, material and fault information to respond more effectively to service and spare-parts enquiries.

Send a service enquiry Review support information

Questions production teams ask

Control settings, parts and approval after every intervention

Repeatable operation depends on knowing which values define the format, which parts are critical and when a change requires more than a routine restart.

Which settings should be controlled as part of a flow-wrapper format recipe?

A controlled format recipe should include the settings that determine film movement, product timing, sealing and any linked coding or inspection function. Depending on the machine, these may include bag length, registration mode, temperature set-points, speed, infeed timing, product-detection logic, no-product/no-bag behaviour, code position and reject timing.

Record only verified values for that machine and format. Link the recipe to the installed parts, film specification and approved first-off pack.

How can changeover waste be reduced without bypassing checks?

Reduce changeover waste by preparing parts and film in advance, using verified settings, checking component condition and following a fixed first-off approval sequence. Clean location and identification of change parts, standard threading routes and a recorded reference pack reduce trial-and-error adjustment.

Do not remove guards, defeat interlocks or skip seal and code checks to save time. Improve the changeover method rather than weakening its controls.

What makes a spare part critical rather than merely consumable?

A critical spare is a part whose failure would create unacceptable production or safety consequence and cannot be restored within the required time. Classification should consider failure likelihood, lead time, repair options, commonality across machines, storage life and whether a safe temporary alternative exists.

Consumables may be replaced regularly but still become critical if production cannot continue without them. Base the list on the actual duty and support arrangement, not a generic catalogue.

When should a film or product change trigger revalidation?

Revalidation should be considered when a change can alter feeding, forming, sealing, registration, code position, inspection or accepted pack performance. Examples include a new film structure or converter, different product dimensions or surface condition, changed artwork repeat, a new former or jaw set, revised seal settings or a moved inspection device.

Use controlled trials and retain the new approved pack. The pitch and pack-length guide and coding guide identify linked settings that may need review.

Flow-wrapper maintenance and changeover control