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9. MA INTENANCE
9.1 Maintenance of rotor
After use, disassemble and wash the shaft, core, titanium sleeve, metal ring, seal packings and
O-rings.
The shaft (D) should be handled with much care, and not together with other parts if possible.
Maintenance of rotor
Maintain the rotor in the following manner:
After the rotor is used, wash it properly with distilled water of 40°C to 50°C and wipe off water
drops by a soft rag. Remove the cover and leave the rotor upside down to eliminate moisture.
After making sure the rotor has been completely dried, apply a thin coat of stop cock grease on
it and store it in a desiccator. When a corrosive sample is handled, immerse the rotor in warm
diluted solution of neutral detergent at pH7 (excluding one containing chlorine) immediately after
end of operation and rinse it properly with distilled water.
If foreign matter is present on the tapered opening at the rotor bottom, the rotor might not fit
the crown properly, thereby breaking the rotor or spinning shaft.
(1) Foreign matters is removed from the rotor surface after immersing it in warm solution of neutral
detergent at pH7 (excluding one containing chlorine) for 24 hr or longer.
(2) Using a soft brush, wash the tapered opening at the tapered bottom of the rotor bottom.
(3) When the rotor is immersed in distilled water of 70°C to 80°C, foreign matter which could not
otherwise be eliminated car be dissolved.