Chapter B: Preventive maintenance
24 Planmeca PlanMill 40 Technical manual
1.2 Preventive maintenance schedule
There are two types of preventive maintenance tasks, those to be made in every 4 month
and those to be made once a year.
In the following table, the preventive maintenance tasks and frequencies are listed.
Table 10: Preventive maintenance tasks and schedule
Task Frequency
Inspect pneumatic filter bowls for moisture:
• 2.1 "Inspecting pneumatic filter bowls for moisture" on page 26
4 months
Inspect profile sensor and verify proper profile sensor signal, use
mirror:
• 2.2 "Inspecting profile sensor and verifying profile sensor signal"
on page 27
4 months
Inspect tool changer 6-pack, bumper and nose seal for damage or
wear:
• 2.4 "Inspecting tool changer 6-pack, bumper and nose seal for
damage or wear" on page 32
4 months
Inspect and clean grind chamber lid/latch/interlock switches, and
verify proper operation:
• 2.5 "Verifying correct interlock switch function" on page 33
4 months
Clean fluid tank, nozzle caps, collets, mill drawer and bottom plates:
2.6 "Fluid tank cleaning" on page 34
4 months
Inspect and clean floats and suction strainer:
• 2.9 "Tank level sensors and filter basket" on page 44
4 months
Inspect and clean block orientation sensor:
• 2.10 "Orientation sensor" on page 47
4 months
Clean nozzles and collets:
• 2.7 "Cleaning collet and spindle caps" on page 35
4 months
Remove, clean and reinstall the suction tubing to the pump:
• 2.11 "Circulation system" on page 150
4 months
Verify calibration by milling a calibration bar with two new ellipsoidal
burs, and check dimensions with micrometer and refine if needed:
• 5 "Verifying calibration" on page 67
4 months
Replace collets:
• 2.7 "Cleaning collet and spindle caps" on page 35
1 year
Replace spindle packing, tool bumper and nose seal:
• 2.8 "Spindle packing" on page 41
• 2.7 "Nose seal" on page 144
• 2.9 "Tool holder" on page 147
1 year
Replace large and small o-rings on the quick release nozzle cap
adapters mounted to the spindle housings:
• 2.7 "Cleaning collet and spindle caps" on page 35
4 months /
1 year
Perform touch screen calibration, if necessary. 1 year
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