GENERAL OBLIGATIONS OF THE OPERATOR ART. 6. The OPERATOR shall perform his duties and services with professional care, diligence and skill and within a reasonable time. ART. 7. The OPERATOR is obliged to provide the necessary staff, organisation, structures, capital necessary equipment and skills for the execution of the contractual services. ART. 8. The OPERATOR is obliged to exercise due care in protecting the goods, to apply reasonable measures in providing security or guard for the warehouse and to prevent loss or damage from atmospheric influences (with the exception of damages due to an unsuitable temperature and/or humidity during warehousing, unless special temperature and humidity are expressly contracted), from fire and from handling or storing the goods in an inappropriate manner. ART. 9. INSTRUCTIONS OF THE CUSTOMER (1) Without prejudice to the provisions of these SWC, the OPERATOR shall take reasonable steps to execute the instructions of the CUSTOMER. (2) Written instructions received by the OPERATOR are treated as definitive authority until revoked by the CUSTOMER.