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<DIV><FONT face=Arial size=2>Dear colleagues, dear J.
Kornblatt,</FONT></DIV>
<DIV><FONT face=Arial size=2>I looked in an old <U> Beckman
Warranty</U> (since I am no more in active in
work) , Such warranty sheet</FONT></DIV>
<DIV><FONT face=Arial size=2>comes in each new rotor
package delivert, it is worth to keep it. As you Judith mailed
, nothing</FONT></DIV>
<DIV><FONT face=Arial size=2>mentioned about , that ,as you
said , <U>occurs first, time or runs </U>, the
rotor speed can <U> be derated</U></FONT></DIV>
<DIV><FONT face=Arial size=2><U> by 10 % of the
previous</U> allowed speed. Usually not each
run is used at maximum speed, </FONT></DIV>
<DIV><FONT face=Arial size=2>(privatly I don't registrate
runs below 50% of the maximum allowed
speed).</FONT></DIV>
<DIV><FONT face=Arial size=2>Rotors with the capacity of 60
K-rpm I derate to <STRONG>about</STRONG> 52-K -rpm , and
the rotor starts a new life</FONT></DIV>
<DIV><FONT face=Arial size=2>with max.~ 52-K -rpm . I don't think ,
if you don't plane all runs at
Max. speed, the rotor should</FONT></DIV>
<DIV><FONT face=Arial size=2>replaced.....ariel</FONT></DIV>
<DIV><FONT face=Arial size=2><A
href="mailto:ariel.lustig@bluewin.ch">ariel.lustig@bluewin.ch</A></FONT></DIV></BODY></HTML>