How to perform regular maintenance on walk-in constant temperature and humidity chamber laboratory

When the user uses the walk-in constant temperature and humidity chamber for a long time to do the test, the user needs to operate the system safely and without failure. Regular inspections and repairs not only solve the problem in time, but may also be the system's best working condition.

1) The walk-in constant temperature and humidity box must be operated, maintained and managed by special personnel , strictly abide by the system operation rules, and prevent others from operating in violation of regulations. With regard to the use and operation of the walk-in constant temperature and humidity chamber, Kevin has provided walk-in constant-temperature and constant-humidity cabinet instructions and installation manuals to the user before shipment. If any is lost or damaged, please contact 13538336510 for information.

2) The system usage file should be established to facilitate the maintenance of the system. The usage file should record the start and end time (date), type of test, and ambient temperature of each operation of the system; when the system fails, the fault phenomenon should be as detailed as possible. The description of the maintenance and repair of the system is also recorded in as much detail as possible.

3) When the walk-in constant temperature and humidity chamber is shut down for a long time, it will affect the effective service life of the system. Therefore, the system must be started at least once for 10 days. Do not make the system run repeatedly in a short time - stop, every hour The number of starting times is less than 5, and the time between start-stop is not less than 3 minutes . Do not open the door of the step-type constant temperature and humidity box at low temperature to prevent damaging the door sealing tape.

4) The main body of the walk-in constant temperature and humidity box shall be protected during use, and shall not be subject to strong collision of sharps or blunt instruments.

5) The main power switch (earth leakage circuit breaker) action test is performed once a month to ensure that the switch is used as a leakage protector under full load capacity. The specific steps are: First, make sure that the power switch is turned to “ON”, that is, the system is powered on, and then press the test button. If the switch lever of the leakage circuit breaker falls, this function is normal.

6) Leakage current, overload, and short circuit protection characteristics of the leakage switch are all set by the manufacturer, and they must not be adjusted during use so as not to affect the performance. After the leakage switch is disconnected due to a short circuit, check the contacts. If the main contact is burned badly or concavely When it is pitted, it needs to be repaired.

7) In order to ensure that the cooling water supply is normal or clean, the chiller cooling water filter is cleaned once every 30 days, and the cooling water tower that cleans the water supply once should be cleaned in about 7 days if the air quality is relatively poor and the dust content in the air is high. Cooling tower reservoir.

8) Normal temperature protector operation test. Set the ambient temperature protector temperature to be lower than the temperature of the cabinet. If there is an E0.0 alarm and beep, it indicates that the function is normal. After the above test is completed, the set value of the temperature protection should be re-set appropriately, otherwise it may be Inappropriate suspension.

9) Once a year, use a vacuum cleaner to remove dust from the distribution room and the water circuit room. Once a month, use a dry cloth to clean the dry and freezer unit to collect water.

10) is placed in a walk-in test area Test Humidity Chamber products from the suction passage of the air conditioner, air vents should be a certain distance so as not to impede the flow of air.