A planned factory shutdown is not simply a matter of pressing the stop button. Compressors, receivers, dryers, filters and piping can retain pressure, condensate and electrical energy. The longer the shutdown, the more important moisture control, corrosion prevention and a documented restart plan become.
For a short shutdown
- Stop equipment in the sequence specified for the compressor, dryer and downstream treatment system.
- Isolate electrical and other energy sources using the site's lockout/tagout procedure.
- Close the appropriate air valves and verify that stored pressure has been released before work begins.
- Drain condensate from receivers, filters, dryers and low points using approved collection and disposal methods.
- Close access panels and protect cables and openings from dust, moisture and pests.
When the shutdown will be extended
For storage lasting weeks or months, the preservation procedure should be model-specific. Water-cooled equipment may require complete draining or other freeze protection. Openings may need to be sealed against humid air and dust, while the package still needs the ventilation or preservation method specified by the manufacturer.
- Correct known faults before storage so the machine is not returned to service with an unresolved defect.
- Protect the package from rain, condensation and corrosive atmosphere.
- Record lubricant condition, service status and any preservation work completed.
- Keep a shutdown register showing valve positions, isolations, drained points and outstanding work.
- Schedule periodic inspections if required by the manufacturer or site risk assessment.
Controlled restart after a long shutdown
- 01
Inspect before energizing
Check for water ingress, loose or damaged wiring, corrosion, blocked ventilation paths, abnormal oil condition and foreign material.
- 02
Restore the system deliberately
Remove preservation materials, return drains and valves to their operating positions, and verify utilities and phase supply according to the commissioning checklist.
- 03
Follow the OEM pre-start procedure
Some compressors require a specific lubrication, rotation or pre-run procedure after long storage. This must come from the model manual or an authorized service engineer.
- 04
Observe the first run
Monitor temperature, pressure, sound, vibration, leaks and alarms. Increase load only when the equipment is stable and the commissioning procedure permits it.
A safe shutdown leaves the system in a known condition; a safe restart proves that condition before production depends on it. B&D Compressor recommends preparing the checklist before the outage and assigning clear responsibility for isolation, preservation and recommissioning.
