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D1 Dryer — maintenance

Routine maintenance keeps the D1 running efficiently and prevents overheating or feeding issues.

Nothing on the D1 is replaced on a schedule. The intervals below are prompts to look, not instructions to change parts.

Maintenance schedule

Section titled “Maintenance schedule”
TaskWhen
Clean the air filter inside the tankEvery 500 operating hours
Check the feed line for kinks, dips or blockagesBefore each session
Empty and wipe the tankAt every material change
Keep the rear ventilation grille clear of dustWhenever it looks dusty, and before a long run
Look over the power cable, and check the pellet gate is still tightWhenever the machine is open for something else
Empty the tankAt every material change — the procedure is below

Only the first line is a real interval, and it is the manufacturer’s. The rest are prompts to look while you are already there — not a calendar.

Air filter

Section titled “Air filter”

The tank holds a filter at the air intake, at the top, and its job is to keep plastic particulate out of the suction and heating side. Clean it every 500 operating hours to keep the airflow up.

  1. Switch the machine off and let it go completely cold
  2. Remove the four fixing screws and take the filter out
  3. Blow it clean with low-pressure compressed air — enough to shift the dust, not enough to damage the element
  4. Refit it, check it is seated and firmly fixed, and only then run the machine again

Ventilation grille

Section titled “Ventilation grille”

Keep the rear panel clear so the machine can move air:

  • Do not push the D1 flush against a wall — leave clearance behind the unit
  • Do not store items against the rear panel

Feed line

Section titled “Feed line”

The line from the D1 to the printer carries pellets, pulled along by the G1’s vacuum. Check it regularly:

  • No kinks, and no section where the line descends — pellets settle in any dip and plug it. See Corrugated tube
  • Firmly seated and clamped at both ends
  • Any gap breaks the suction, and the hopper simply stops filling

Changing material

Section titled “Changing material”

The material comes out of the bottom, not the top. The manual’s order matters: the guillotine has to be open to let the tank drain, and closed again before the discharge cap goes back on.

  1. Shut the machine down properly and let it cool — see Shutting it down
  2. Put a suitable container under the discharge point
  3. Open the discharge cap, and check the guillotine is fully open so the tank can empty
  4. Let the material run out
  5. Close the guillotine, then close the discharge cap
  6. Open the lid on top, wipe the interior dry to clear dust and fines, and load the new material

Cross-contamination between materials — coloured into natural especially — shows up in the print.

Pellet gate

Section titled “Pellet gate”

The gate bolts to the underside of the tank and carries the whole weight of the feed line. If it ever looks or feels loose, check it.

Do this by hand. The body is plastic and a driver strips those threads in an instant — the drill is for the assembly, where the screws start in fresh inserts, not for a snug check afterwards. The tank is right there too, and it does not survive being leaned on.

Section titled “Related notes”