1. As temperature & humidity chamber is normally quite valuable in price, so we suggest placing it in an environment with quite proper temperature condition. 8℃~23℃ is suggested, and the lab that does not meet this temperature conditions shall add proper air conditioner (air-cooling) or cooling tower (water-cooling);

2. We suggest arranging professional personal to manage this equipment. And those units, if possible shall arrange special personals to supplier’s site for training and study irregularly so as to gain according professional maintenance skills and experiences;

3. Clean the condenser regularly (every 3 months), the condenser of the chamber with air-cooling compressor shall be maintained regularly and we shall clean the dirt and dust on condenser so as to ensure the good heat exchange efficiency; and in addition to ensuring the inlet water pressure and temperature for the water-cooled compressor, the according flow shall also be ensured and the inside of the condenser shall be cleaned regularly so as to ensure its sustainable heat exchange efficiency;

4. Regularly( every 3 months) clean the evaporator( dehumidifier), as the items to be tested have various grades of requirement for cleanness, and during the test, the evaporator (dehumidifier) will have some small articles such as dust accumulated under forced circulating airing and shall be regularly cleaned;

5. Cleaning and calibration for circulating propeller and condenser: same as evaporator, as the chamber is working in various environments, its circulating propeller and condenser will have much dusts accumulated and shall be regularly cleaned;

6. Cleaning for water pipes and humidifier: humidifier is easily burnt if the water pipe is blocked and humidifier have dirt accumulated and normally results in damage of humidifier, so the water pipes and humidifier shall be regularly cleaned;

7. After every test, we shall set the atmospheric temperature for chamber and run it for 30min, then cut off the power and clean the internal side of the chamber;

8. The relocation of the chamber shall be conducted under the instruction of the technician so as to prevent from unnecessary damage;

9. The chamber shall be powered on for at least one hour regularly every 15 days if it is not used for very long time;

10. Principles for Maintenance: as the temperature & humidifier consists of electricity, cooling system and mechanical system. The whole equipment shall be completely checked if any problem happens to the equipment, normally, the analysis shall starts from outside to inside, which means that the possible problems concerning with outside could be eliminated first such as cooling water, power supply system and so on.  Once the problem concerning with outside are completely eliminated, we shall disassembly the systems and then conduct comprehensive analysis. And the root causes for faults could also be found out by backward tracing method: check the electrical diaphragm to find out if the electricity system has problem then finally check if any problem concerning with cooling system exists. No replacement of any disassembled part shall be done before confirming root cause of the fault in case of the unnecessary troubles;