Changeover Time Reduction: Where Maintenance Teams Can Help

Changeover time is usually discussed as a production problem. But maintenance has a direct role in how quickly a line can move from one product, batch, tool, die, mold, size, or setup to another.

When equipment is not ready, changeovers stretch. Production waits. Supervisors chase people. Technicians search for tools, adjust settings, fix small defects, or repair items that should have been found earlier.

Reducing changeover time is not only about speed. It is about readiness.

What is changeover time?

Changeover time is the time between the last good output of one run and the first good output of the next run.

It may include:

• Stopping the line
• Cleaning
• Removing tools or parts
• Installing new tools, dies, molds, guides, or fixtures
• Adjusting settings
• Inspecting equipment
• Running trials
• Correcting defects
• Getting approval to restart

Maintenance affects many of these steps.

Where maintenance delays appear

Maintenance-related changeover delays often come from:

• Worn clamps, guides, belts, chains, bearings, or fixtures
• Missing tools
• Damaged fasteners
• Poor lubrication
• Sensor adjustment issues
• Air leaks or hydraulic leaks
• Incorrect machine settings
• Dirty equipment
• No standard checklist
• Breakdown discovered during changeover
• Slow response to small repairs

These issues may look minor, but they add minutes or hours every time.

Separate internal and external work

A useful changeover idea is to separate internal and external work.

Internal work can only happen when the machine is stopped.

External work can be prepared while the machine is still running.

Maintenance can help move more work outside the stoppage by preparing:

• Tools
• Spares
• Fixtures
• Cleaning supplies
• Lubricants
• Inspection checklist
• Setup parameters
• Technician support
• Follow-up actions from the previous run

This reduces waiting during the actual changeover.

Create a changeover readiness checklist

A practical checklist should confirm:

• Required tools are available
• Required spares and consumables are available
• Fixtures and guides are ready
• Safety guards are in place
• Cleaning requirements are completed
• Sensors are clean and aligned
• Lubrication points are checked
• Known defects from the previous run are closed
• Trial run acceptance criteria are clear

This checklist can be managed using inspections and checklists software or as part of a planned work order.

Use maintenance history

Repeated changeover delay is a reliability signal.

If the same machine needs adjustment every changeover, the issue may be:

• Poor asset condition
• Worn tooling
• Weak setup standard
• Incomplete PM
• Operator training gap
• Missing spare
• Design issue

A work order management software helps capture these delays as visible work instead of treating them as normal production loss.

Improve PMs around changeover risks

Preventive maintenance should support changeover reliability.

Add PM tasks for:

• Cleaning and inspection before scheduled changeover
• Fixture condition
• Sensor condition
• Pneumatic and hydraulic leaks
• Fastener and clamp condition
• Setup reference marks
• Critical wear parts
• Tooling condition

A preventive maintenance software setup can schedule these tasks before planned production changes.

Track the reasons for delay

Do not track only total changeover time.

Track reasons such as:

• Waiting for maintenance
• Waiting for tools
• Adjustment repeated
• Cleaning incomplete
• Spare unavailable
• Setup parameter unclear
• Trial rejected
• Safety issue

These reasons show where improvement is needed.

Bottom line

Changeover time improves when the line is prepared before it stops.

Maintenance helps by keeping assets, tools, fixtures, spares, sensors, settings, and checklists ready.

MaintBoard supports changeover improvement by connecting planned work, inspection checklists, follow-up work orders, asset history, spare usage, and maintenance reports in one workflow.