Labnet Spectrafuge 16M Microcentrifuge Service Manual - Manual (Page 6)

Section 3
Troubleshooting
Problem Possible cause Solution
Lid will not open Rotor still turning. Wait for rotor to stop.
(with power/rotation light on).
Internal electrical failure. Requires service.
Lid will not open No power supply. Check plug connection on back of unit.
(with power/rotation light off).
No power supply. Check/replace fuse.
No power supply. Check wall outlet.
Internal failure. Requires service.
Excessive vibration. Debris lodged inside rotor. Disassemble and clean out rotor.
Rotor improperly loaded. Load symmetrically/balance tubes.
Rotor damaged. Requires service or replacement.
Centrifuge not on firm, level surface. Relocate to appropriate surface.
Motor damaged. Requires service.
Rotor does not rotate. Lid not properly closed. Press down firmly on front of lid.
Timer not set. Select a timer interval.
Speed not set. Select a speed from 1,000 to 14,000rpm.
No power supply. Check plug connection on back of unit.
No power supply. Check/replace fuse.
No power supply. Check wall outlet.
Grinding or metallic rattle noise during Rotor screw is not tight on motor shaft. Tighten rotor screw as firmly as possible
acceleration or braking. by hand. Then tighten an additional 1/8
turn using a wrench or other appropriate
tool. Do not exceed 1/8 turn.
Bottom shield of rotor is not properly Check and tighten the three screws on
secured to top part of rotor. bottom of rotor assembly.
Whistling noise (high-pitched) during Rotor cover is off and rotor is less than Add extra tubes symmetrically and/or
acceleration or deceleration. 1/3 full. install rotor cover.
Power/rotation light does not illuminate. Defective fuse. Check/replace fuse.
Excessively noisy while rotating at Rotor is poorly balanced. Check with a well balanced load.
maximum speed.
Rotation is too fast. Recalibrate speed.
Rotation light stays on after rotor has Failure of electronic braking circuit. Requires service.
stopped.
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