Planmeca PlanMill 40 - Grind Chamber Lid Problems

Chapter D: Troubleshooting
Technical manual Planmeca PlanMill 40 77
1.3 Grind chamber lid problems
Table 15: Grind chamber lid problems
Symptom Problem Solution
Lid is closed but software says it is open
Interlock switch(es) need
adjustment
Adjust the interlock switch upward to contact the lid assembly:
2.3.4 "Interlock switches" on page 123
Defective interlock
switch(es)
Replace interlock switch(es):
2.3.4 "Interlock switches" on page 123
Defective CPU module Replace CPU module:
2.2.2 "CPU module" on page 102
Defective lid cable Replace lid cable:
2.3 "Grind chamber lid/adapter assembly" on page 117
Lid doesn’t open via software control
Flow control valve needs
adjusted
Increase flow at “open” flow control valve:
2.11.3 "Float switch" on page 154
Low air pressure Set air pressure regulator at 3.45 - 3.80 bar (50 - 55 psi):
2.12.5 "Regulator, filter and water separator" on page 161
Defective solenoid valve Replace solenoid valve:
2.12.3 "Solenoid valve" on page 159
Defective lid latch assembly Replace lid latch assembly:
2.3.3 "Lid latch" on page 123
Defective CPU module Replace CPU module:
2.2.2 "CPU module" on page 102
Defective pneumatics cable Replace pneumatics cable:
2.12 "Pneumatics system" on page 155
Defective power supply
module
Replace power supply module:
2.2.1 "Power supply module" on page 100
Lid opens partially and falls back down
Low air pressure Set air pressure regulator at 3.45 - 3.80 bar (50 - 55 psi):
2.12.5 "Regulator, filter and water separator" on page 161
Flow control valve needs
adjustment
Increase flow at "open" flow control valve:
2.12.3 "Solenoid valve" on page 159
Springs not sufficiently
preloaded
Remove, preload and resinstall springs:
2.3.2 "Lid" on page 119
Lid doesn't automatically open at the end of a job but does open via technician console
Defective fluid pressure
switch
Replace fluid pressure switch:
2.11.2 "Water pressure switch" on page 153
Top cover pressed against
lid
Adjust top cover away from lid:
2.1.1 "Top cover" on page 94
Lid latch doesn't close