Laboratory centrifuge Sigma 1-14
Version 08/2012, Rev. 3.14 of 11/08/2017 • sb
Translation of the original operating manual, part no. 0700002
• Open the centrifuge lid by pressing the lid key.
• Unscrew the rotor fastening nut from the motor shaft (counter-
clockwise).
• Lower the rotor with its central bore straight down onto the motor shaft.
• Hand-tighten the rotor fastening nut clockwise (corresponds to 1 Nm).
The rotor fastening nut and conical spring washer must face the rotor
(i.e. the writing must be shown on top).
Fig. 4: Rotor fastening nut from above (A) and from below (B)
• To lock the snap-on lid, pull the safety lock in the middle of the lock
upwards and put the lid on the rotor. The snap-on lid will be locked
when the safety lock is released.
Once a day or after 20 cycles, the rotor tie-down screw must be loosened
by some turns, and the rotor must be lifted and fastened again. This
ensures a proper connection between the rotor and the motor shaft.
Rotors can be used without a cover. This leads, however, to higher levels
of noise and temperatures when running.
• Follow the safety instructions and hazard warnings (see chapter 3 -
"Safety")!
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