User`s manual
RS-400-SF User’s Manual 
89
Appendix C Safety Instructions  
C.1 English    
1. Read these safety instructions carefully. 
2. Keep this user’s manual for later reference. 
3. Disconnect this equipment from any AC outlet before cleaning. Do not 
use liquid or spray detergents for cleaning. Use a damp cloth. 
4. For pluggable equipment, the power outlet must be installed near the 
equipment and be easily accessible. 
5. Keep this equipment away from humidity 
6. Put this equipment on a reliable surface during installation. Dropping it 
or letting it fall could cause damage. 
7. The openings on the enclosure are for air convection. Protect the 
equipment from overheating. DO NOT COVER THE OPENINGS. 
8. Make sure the voltage of the power source is correct before connecting 
equipment to the power outlet. 
9. Position the power cord so that people cannot step on it. Do not place 
anything over the power cord. 
10. All cautions and warnings on the equipment should be noted. 
11. If the equipment is not used for a long time, disconnect it from the 
power source to avoid damage by transient over-voltage. 
12. Never pour any liquid into an opening. This could cause fire or 
electrical shock. 
13. Never open the equipment. For safety reasons, the equipment should be 
opened by qualified service personnel only. 










