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Preventive Maintenance

Additive Machine Filter & Atmosphere Check

The filter and the atmosphere interlock are what keep a powder bed machine inside its process and inside its fire control. A build parameter is not a maintenance setpoint.

Interval Every 2 weeks
Est. Duration 2.0 hrs
Steps 5
Applies To Launch Vehicle Production

The Procedure

The steps ChatterFix schedules for this PM. Every step is a checkable item on the work order — a technician can speak their way through it without touching a keyboard.

  1. With the source locked out, record filter differential and change the element if due
  2. Verify oxygen or atmosphere interlock prevents a start out of limit
  3. Inspect recoater blade and powder seals for damage
  4. Confirm powder containers are closed and labeled
  5. Do not change a build parameter from a maintenance work order

Why This PM Exists

The filter and the atmosphere interlock are what keep a powder bed machine inside its process and inside its fire control. A build parameter is not a maintenance setpoint.

What Skipping It Looks Like

Differential pressure creeps, the oxygen interlock gets bypassed to finish a build, and the recoater damage shows up as a defect that gets blamed on powder.

Setting the interval

Fortnightly, with the source locked out. Change the filter on differential. Do not edit a build from this work order.

Equipment This Covers

Additive Manufacturing Cell 21 PMs Clean Assembly Booth 14 PMs Commercial Laundry Machine 7 PMs Dust & Fume Collection System 18 PMs Injection Molding Machine 31 PMs Knitting Machine 8 PMs Lift Station Pump 26 PMs Pool & Spa System 19 PMs Primary Machine 7 PMs Rooftop HVAC Unit 8 PMs Service Van 33 PMs Structural Die-Cast Cell 11 PMs

Common Questions

How often should this PM run?
Every 2 weeks. Fortnightly, with the source locked out. Change the filter on differential. Do not edit a build from this work order.
How long does it take?
Budget about 2.0 hours for a technician working to the standard procedure. ChatterFix uses that estimate for capacity planning, then learns your plant's actual time from completed work orders.
What happens if we skip it?
Differential pressure creeps, the oxygen interlock gets bypassed to finish a build, and the recoater damage shows up as a defect that gets blamed on powder.
Can I use this checklist in ChatterFix?
Yes — this exact procedure ships in the Launch Vehicle Production industry pack. Pick your industry at signup and it is scheduled on the right assets automatically, with no configuration.

Related Procedures

Circumferential Weld Parameter Audit Weekly Clean Booth Particle & FOD Audit Weekly Engine Stand Tooling & Fastener Control Weekly FOD and Tool Control Audit Weekly High-Energy Exclusion Verification Monthly LOTO Program Verification Monthly

Stop Retyping Your PM Library

This procedure — and every other PM for your industry — is already built into ChatterFix. Pick your industry and it lands on the right equipment, on the right interval, in about three minutes.

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