1. Commissioning number less than two, one to control power, one observes fan operation, abnormal phenomenon immediately stop inspection; First check the direction of rotation is correct; blower process, roof exhaust fan, you should check the operating current of each phase whether the balance, the current exceeds the rated current; if not normal, you should stop checking. After running for five minutes, the fan down to check whether there is abnormal phenomenon, confirmed that no anomalies start running again. 2. A two-speed fan test, high-temperature exhaust fan, you should start low, and check the direction of rotation is correct; it must be starting after the high-speed fan still renewed, to prevent reverse rotation speed, causing the switch trips and motor damage. Exhaust fan in the specification; A sound level noise limits should be consistent with the provisions of JB / T8690-1998 of. Exhaust fan can be an ordinary or special steel centrifugal fan axial exhaust fan. Exhaust fan specifications according to "fire protection design of tall buildings" in the regulations. The minimum air volume exhaust fan 7200m / h, the maximum air flow should not exceed 60000m / h (refers to a partition of the maximum exhaust air volume). Exhaust fan flow should be required to increase airflow value of not less than 10% to 20% of the surplus amount. Pressurized smoke exhaust fan pressure value shall be the most unfavorable loop system to calculate and ensure the value of residual pressure in the stairwell 40 ~ 50Pa. The residual pressure value inside the front room, shared room, fire elevator room, refuge floors, etc. 25 ~ 30Pa. Fire exhaust fan should be consistent with the current standard JB / T10281-2001 "fire exhaust fan technical conditions." Fan exhaust system should be set separately. Exhaust fan should be in the same position or an upper layer of smoke region. Products; 1.HTF type fire temperature exhaust axial fans, exhaust fans Xingqing district, the basic form of an axial flow type structure, with high temperature motor, arranged a special motor cooling system, the product supervision by the National Fire Equipment Quality Inspection Center Press GA211-1999 "fire exhaust fan high temperature test method" high-temperature test at medium temperature conditions of high temperature 300 ℃ continuous operation more than 60 minutes at a temperature of 100 ℃ continuous operation 20 hours / time is not damaged, dual exhaust ventilation can be. 1.2 Categories by Mounting points: horizontal and Roof (W type). Press the air flow pressure point: there is pressure type Ⅰ and Ⅱ (double speed); medium-pressure (mixed flow impeller) has Ⅲ, Ⅳ type (double speed); there is low pressure type D1, D2 type. Press Speed ??points: single-speed, two-speed, variable frequency (by frequency conversion motor with variable frequency controller, inverter implementation, in order to adapt to different conditions, it is recommended to adjust the frequency locked in 25Hz ~ 50Hz). 1.3. To meet the noise requirements of different places, the fan can be equipped with different lengths muffler, it can be made into a sheathed (housing silencer). 2, HTF-type fire temperature exhaust axial fans working conditions Operating temperature: -20 ℃ ~ + 60 ℃ (continuous operation); temperature: 100 ℃ (continuous operation 20 hours), 300 ℃ (continuous operation 60 minutes ); temperature: <90%; medium conditions: air (dust content of no more than 100mg / m3); Power supply: three-phase, 380V / 50Hz; 3, HTF-type fire temperature exhaust fan axial fans can be widely used application rise construction, oven, underground garage, tunnels and other places exhaust ventilation. Xingqing exhaust fan, Chen Yu air conditioning, exhaust fan service provided by Wu Cheng Chen-yu air-conditioning Limited. Xingqing exhaust fan, Chen Yu air conditioning, exhaust fan maintenance is wucheng Chenyu Air Conditioning Equipment Co., Ltd. (www.wccykt.com) this year introduced a new upgrade, the above picture is for reference only, please call this page or image on the telephone, to obtain the latest information, contact: sand manager.