Drucker Diagnostics 642M Service-Handbuch - Seite 4
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5. TROUBLESHOOTING
PROBLEM
The lid does not open.
PROBLEM
Excessive vibration
PROBLEM
Rotor does not spin
PROBLEM
Clicking noise during braking
PROBLEM
Whistling noise while running
PROBLEM
Rotor speed is lower than
specified range
DRUCKER DIAGNOSTICS
642M SERVICE MANUAL
POSSIBLE CAUSE
No power
Lid knob is not completely closed
Lid lock is active (Unlock timed out)
Lid tray is unplugged from control board or
defective
Control board is damaged
POSSIBLE CAUSE
Rotor improperly loaded
Debris lodged within the rotor or tube
carriers
Centrifuge housing is loose
Missing/damaged feet
Motor failure
Rotor damaged
POSSIBLE CAUSE
No Power
Lid not properly latched
Internal connection failure
Control board failure
Motor Failure
POSSIBLE CAUSE
Rotor is loose
POSSIBLE CAUSE
Debris in air intake / exhaust ports
Damaged gasket
POSSIBLE CAUSE
Rotor speed is calibrated at 13.8 VDC
SM023
SOLUTION
• Check line cord
• Check fuse in end of line cord.
Rotate the lid knob fully clockwise before pressing
the 'OPEN' button
Press the 'OPEN' button to de-activate the lid lock
Check wiring
Replace Control board
To gain access to the rotor - Remove the
'OPEN/CLOSE' sticker and slide the lid latch lever
toward the front of the centrifuge. This will unlock
the lid.
SOLUTION
Load equally filled tubes symmetrically in the rotor.
All carriers and/or tube holders must be present in
the rotor.
Carefully inspect all rotor pockets, tube holders and
crevasses for debris, and clean thoroughly.
Tighten or replace screws
Replace feet
Replace motor
Replace rotor
SOLUTION
• Check line cord
• Check fuse in end of line cord.
Press down firmly on lid and rotate lid knob clockwise
until the 'LATCHED' light illuminates.
Check wiring
Replace control board
Replace motor
SOLUTION
Tighten rotor nut
SOLUTION
Remove power before clearing debris.
Requires service
SOLUTION
Confirm source voltage meets or exceeds this value.
Motor speed will vary according to source voltage.
REV C
4