DRUCKER DIAGNOSTICS SM006
MODEL 642E SERVICE MANUAL REV: A 4
5 TROUBLESHOOTING
The lid does not open.
Check circuit breaker on underside of centrifuge.
Lid knob is ajar
Rotate the lid knob fully clockwise before pressing the
‘OPEN’ button
Lid lock is active (Unlock timed out)
Press the ‘OPEN’ button to de-activate the lid
Lid tray is unplugged from PCB or defective
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.
Excessive vibration
Rotor improperly loaded
Load equally filled tubes symmetrically in the rotor. All
carriers and/or tube holders must be present in the rotor,
whether loaded, or empty.
Debris lodged within the rotor or tube
carriers
Carefully inspect all rotor pockets, tube holders and
crevasses for debris.
Centrifuge housing is loose
Rotor does not spin
Check circuit breaker on underside of centrifuge.
Lid not properly latched
Press down firmly on lid and rotate lid knob clockwise until
the ‘LATCHED’ light illuminates.
Internal connection failure
Clicking noise during braking
Tighten rotor nut per section 7-2
Whistling noise while running
Debris in air intake / exhaust ports
Remove power before clearing debris.