Chapter D: Troubleshooting
74 Planmeca PlanMill 40 Technical manual
One collet doesn't open, but the other one does
Damaged collet Replace damaged collet and/or spindle:
2.7 "Cleaning collet and spindle caps" on page 35
2.13.9 "Spindle and spindle motor" on page 182
Defective solenoid valve Replace solenoid valve:
2.12.3 "Solenoid valve" on page 159
Damaged spindle Replace spindle:
2.13.9 "Spindle and spindle motor" on page 182
Damaged/kinked air line Replace air line:
2.12.2 "Pneumatics tubing routing" on page 158
Defective CPU module Replace CPU module:
2.2.2 "CPU module" on page 102
Defective pneumatic control
cable
Replace pneumatic control cable:
2.12 "Pneumatics system" on page 155
Supply air pressure is less
than 3.5 bar (45 psi)
Check air compressor for adequate supply pressure.
Both collets do not open or do not open fully
Incorrect pressure regulator
setting
Set air pressure regulator at 3.45 - 3.80 bar (50 - 55 psi):
2.12.5 "Regulator, filter and water separator" on page 161
Incorrect pressure multiplier
setting
Set pressure multiplier to maximum setting:
2.12.6 "Pressure multiplier" on page 163
Defective pressure
multiplier
Replace pressure multiplier:
2.12.6 "Pressure multiplier" on page 163
Defective power supply
module
Replace power supply module:
2.2.1 "Power supply module" on page 100
Debris in spindle shaft Remove debris in spindle shaft:
2.7 "Cleaning collet and spindle caps" on page 35
Collet doesn't close
Damaged collet Replace collet:
2.7 "Cleaning collet and spindle caps" on page 35
Damaged spindle Replace spindle:
2.13.9 "Spindle and spindle motor" on page 182
Damaged/defective tool Replace tool.
Tool is stuck/jammed in
collet
Use "stuck tool" removal tool in tool kit & replace collet:
2.7 "Cleaning collet and spindle caps" on page 35
Can't remove tool from collet
Collet is in "closed" position Open collet first, then attempt to remove tool:
2.7 "Cleaning collet and spindle caps" on page 35
Can't remove collet from spindle
Symptom Problem Solution
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