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In the production process of the ventilation pipe, the vertical joints should be reduced, and the transverse joints should not be allowed. The gap of the ventilation pipe should be in accordance with the cleaning level of the design scheme, and then the sealant should be selected to block it tightly. The protruding surface of the plate joint of the ventilation pipe should be built on the positive pressure side of the ventilation pipe wall. The anti-corrosion measures should be taken in the process of ventilation pipe processing and production, and the pipe parts must go through hot galvanizing.

機器設備清洗法。清洗周期短，油污較少的煙道采用這個方法。先將管道內噴灑清洗劑，使油污軟化，再用30米長的電動軟軸刷將油污洗擦干凈。用于30公分見方的豎煙道，人工無法進入且不便拆卸的隱蔽的小煙道。這種不易清洗而且輕易積油要縮短清洗周期。

Machine and equipment cleaning method. This method is used for flue with short cleaning cycle and less oil pollution. First, spray the cleaning agent in the pipeline to soften the oil, and then clean the oil with a 30 meter long electric flexible shaft brush. It is used for the vertical flue of 30 cm square and the concealed small flue which cannot be manually accessed and is inconvenient to be disassembled. This is not easy to clean and easy to accumulate oil, to shorten the cleaning cycle.

1、每個爐灶對應的處理風量約為2000~2500m3/h，根據爐灶數量及安裝位置確定總的處理風量并選定相應的凈化器的規格型號。

1. The treatment air volume of each stove is about 2000 ~ 2500m3 / h. The total treatment air volume is determined according to the number of stoves and the installation position, and the specifications and models of the corresponding purifier are selected.

2、凈化器可室內、外安裝，凈化器室外安裝請在機器上方安裝防雨裝置以增加機器的使用壽命，凈化器周圍需要預留維修空間、機箱門應有90度以上直角自由開啟空間以便于日后保養、清洗、維修。

2. The purifier can be installed indoors or outdoors. If the purifier is installed outdoors, please install a rainproof device on the top of the machine to increase the service life of the machine. The maintenance space should be reserved around the purifier. The cabinet door should have a right angle free opening space of more than 90 degrees to facilitate future maintenance, cleaning and repair.

3、機器在安裝前先通電試行一段時間，檢驗機器的電極是否會在運輸或搬運中產生偏移。

3. Power on the machine for a period of time before installation to check whether the electrode of the machine will shift during transportation or handling.

4、機器的進出風口可以隨意互換，進風口方向必須要有過濾網。

4. The air inlet and outlet of the machine can be interchanged at will, and the direction of the air inlet must have a filter screen.

5、安裝油煙凈化器與煙罩出口位置的距離至少在4米以上，以確保消防安全和凈化效果；凈化器與風機的距離在2米以上比較合適，凈化器安裝在風機的前面，如果風機需要安裝在凈化器的前面，風機的出風口不能對著凈化器直吹，否則會影響凈化器凈化效果；凈化器的進風口不能有彎頭。

5. The distance between the oil fume purifier and the outlet of the hood should be at least 4 meters to ensure the fire safety and purification effect; the distance between the purifier and the fan should be more than 2 meters, and the purifier should be installed in front of the fan. If the fan needs to be installed in front of the purifier, the air outlet of the fan should not directly blow against the purifier, otherwise the purification effect of the purifier will be affected; purification The air inlet of the air conditioner shall not have elbow.