Domel CENTRIC 150 - 4.3 Rotor Loading Best Practices

USER'S MANUAL UNIVERSAL CENTRIFUGE CENTRIC 150
Page 6
figure 3
4.3 ROTOR LOADING
Rotor must always be equipped with the same type of test tubes on all places or with pairs of
equal type which are placed on opposite places according to motor axis (look at figure 4). Test
tubes must be filled with the same quantity of samples to avoid imbalance and possible damage.
SAMPLES OF CORRECT AND INCORRECT ROTOR LOADING
figure 4
4.4 CRITICAL SPEED
Each rotating body has critical speed with resonance. So take care about this. Rotors are
precisely balanced, but little difference in loading can cause this resonance Do not use critical speed
for regular work nevertheless there is build in imbalance sensor.