Iris Sample Processing StatSpin® Express 4 Horizontal Centrifuge - Manual (Page 11)

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2. Locate 1/8 inch hex key supplied and remove center screw of rotor hub.
3. Remove rotor lifting straight up and out of centrifuge.
To re-install the rotor:
1.
Align position 1 on the rotor with the flat on the motor shaft.
2. Slide the rotor onto the shaft and push down gently to seat. Do not force the rotor onto the
shaft. If it does not slide down easily re-align the rotor with the shaft.
3. Reinstall center screw and tighten with supplied hex key.
4. Reinstall shield into housing. Grasp shield at center and rotate counter-clockwise until in the
locked position.
Spinning the Sample
CAUTION - Never operate the StatSpin ® Express 4 without the rotor and shield securely in place.
Do not attempt to by-pass any interlock switches located around bowl and shield area. Failure to
properly install and secure the rotor may result in damage to the centrifuge not covered by warranty.
CAUTION
– Maintain a 300 mm (11.8 inches) clearance envelope around centrifuge during
operation. Do not deposit any potentially hazardous materials within the CLEARANCE ENVELOPE.
Loading
1. Ensure the appropriate tube inserts are installed. The StatSpin ® Express 4 centrifuge is
provided with eight tube inserts for 13 x 100 mm tubes (Product No. SV09) and eight tube
inserts for 16 x 100 mm tubes (Product No. SV07). Other sizes are available (See
accessories).
2. The rotor must be properly balanced to ensure smooth operation. DO NOT spin a single tube.
3. Use the same size and style tubes in opposite positions. Balance liquid in tubes to within 0.5 mL.
4. Close and latch the centrifuge cover.
5. Select the spin time by pressing the appropriate cycle time button.
6. Press Start button.
CAUTION - Replace Tube Inserts immediately if a tube breaks during centrifugation.
CAUTION – Replace glass tubes used for rotor balancing after 10 spin cycles to reduce chances of
breakage due to the repeated stress of centrifugation.
Cycle Settings
The operator should select spin time settings to achieve optimum results for specific applications.
The following are general guidelines:
Setting Speed RCF
3 min Produces high quality plasma/serum from whole
blood for chemistry and cardiac testing.
5100 rpm 4000 xg
5 min Produces high quality plasma/serum from whole
blood for chemistry and cardiac testing.
Recommended for most Greiner gel tubes
5100 rpm 4000 xg
10 min Slower traditional spin.
Centrifugal forces are decreased to provide a ………
traditional spin.
4500 rpm 3100 xg
Unloading
1. Upon completion of the cycle, the rotor decelerates to a stop, a signal beep will sound, and the
cover latch automatically releases.
2. Lift the cover and carefully remove the tubes.