Notice: Do not use cracked tubes.
12. Calculation Relative Centrifuge Force
（
RCF
）
An RCF can be determined as the calculation formula following.
Calculation formula:
RCF=1.118×r×n
2
×10
-5
r
—
rotating radius, unit: cm; n
—
rotating speed, unit: rpm
13. Guarantee
13.1
Guarantee of centrifuge
This centrifuge is guaranteed for two years from the date of delivery provided that it has been
operated and maintained properly.
13.2
Guarantee of the rotor
The rotor is guaranteed fo
r 5 years
from the date of delivery upon manufacture. Please pay
attention, do not use the rotor once it has been corrosion or fatigue damage. We do not guarantee
this centrifuge and the rotor under the following conditions even if within the guarantee period
expires:
（
1
）
Failures caused by incorrect installation.
（
2
）
Failures caused by rough or improper handling.
（
3
）
Failures caused by conveyance or relocation after installation.
（
4
）
Failures caused by unauthorized disassembly or modification.
（
5
）
Failures caused by using parts of the other companies, such as rotors and adapters.
（
6
）
Failures caused by natural disasters including fire, earthquakes and so on.
（
7
）
Consumables and parts have a limited guarantee period
After-sales Service
In order to ensure to operate centrifuge safely and efficiently, it is necessary for regular
maintenance. If centrifuge has problems, do not attempt to repair it by yourself. Contact our sales or
service center.
