Sigma 4-15C - Page 38

Operating Manual SIGMA 4-15C, page 38 of 95
03/06
12. Attention: The centrifuge will absorb smaller differences in weight when
loading the rotors. But it is recommended to balance the vessels as
accurately as possible in order to ensure a run with minimal vibrations.
Should the centrifuge be operated with very uneven load, the imbalance
monitoring will switch off the drive. An imbalance warning would be displayed.
13. Rotors with lid should always be run with their lid. The rotor lid is tightened by
hand. Correct fastening must be ensured. Attention: The lid screw serves
for fastening of the lid onto the rotor only, not for fastening of the rotor
onto the drive! Before installation of the lid, the correct fastening of the rotor
fixing screw must always be checked using a wrench.
3.3.1 Fastening of Angle Rotors with Hermetically Sealed Lid
(Please refer to drawing on next page.)
1. Screw rotor lid (2) onto rotor and tighten it.
2. Lower rotor with lid (2) onto motor shaft.
3. Put rotor tie-down screw (1) onto motor shaft and tighten using the wrench.
4. The rotor can be run without lid (2) as well.
5. The rotor and lid seals (3) must be greased after cleaning.
6. Special instructions for the use of hermetically sealed rotors:
All rotors can be installed or removed with closed lid after loosening the rotor
tie-down screw. All rotors are autoclavable (refer to chapter 8.6 "Sterilization
and disinfection of rotor chamber and accessories").
To increase life of rotors and seals the rotors must be cleaned with slushing
oil and the seals and thread areas with vaseline or grease after cleaning.
Attention!
Please follow the special comments of chapter 1.5.