CORRECTIVE ACTION
POSSIBLE CAUSE
SYMPTOM
a) Power cord not in
a) Plug cord into receptacle.
operate.
receptacle.
b) Power switch not ON.
b) Activate power switch.
c) Timer set to "0."
c) Set timer to desired
spinning time.
d) Cover not latched.
d) Close cover latch securely.
e) External fuse blown.
e) Replace fuse.
f) Motor brushes worn or
f) Replace brushes.
defective.
g) Defective internal parts.
g) Remove and replace.
2. Brake switch fails
Brake system defective.
Remove and replace the
to decelerate rotor.
defective component of the
brake system.
3. Centrifuge
a) Unbalanced load.
a) Balance load.
vibrates excessively.
b) Rubber feet worn.
b) Replace feet.
4. Tachometer
a) Wait until speed
indicates zero speed
excess of 500rpm.
accelerates above 500rpm.
or incorrect speed.
b) Remove and replace.
speed control or motor.
5. Centrifuge fails to
a) Line voltage incorrect.
a) Check power source with
achieve maximum
accurate monitor (authorized
speed specified for
personnel only).
rotor configuration.
b) Defective speed control,
b) Remove and replace.
Figure 2-2. Troubleshooting guide.
MD0368
2-6