Installation and use: 1) can be vertical, horizontal and hanger installation. Fan base must naturally be combined with basal plane, and not to beat coupling force base, the weight of the pipeline must not be applied to the turbine components. 2) should be carefully checked before installation whether the impeller and the casing due to transport damage and deformation, if any, should be repaired before installation. 3) Check for loose bolts, electrical insulation is good, whether the goods hinder the rotation within the fan duct. 4) After you install the fan to make a trial run, abnormal rub, touch and vibration to be excluded immediately. Two-speed fan control principle: The Company two-speed fan motors are equipped with two-speed electrically stator windings △ / XY (or Y / XY), speed connections by changing the basic principles of the stator windings to change the number of poles in order to achieve the purpose of speed, low-speed operation △ (or Y) mode exhaust fan service, high-speed operation when XY mode. Wind the electrical control box with circuit breaker, protection devices and other electrical components must be correctly use reasonable choice by turbine rated capacity; 1.MHL3-2A, MPYH-14A (MHTFL-14A) Francis with two-speed high-temperature exhaust fan in tunnels, underground garage, metallurgy and other high-temperature exhaust exhaust fan application, in the case of fire, smoke quickly cool into the disaster area to assist firefighters extinguishing, fire safety is an essential facility. 2, the type of gas transportation: air and other unnatural harmless exhaust fan, for just the principle of non-corrosive gases exhaust fan, in special circumstances, the choice of explosion-proof Francis fan. 3, impurity gases inside: adhesive materials are allowed within the gas contained in the dust and hard particles is not greater than 150mg / m3. 4, the temperature of the gas: MHL3-2A, MPYH-14A (MHTFL exhaust fan principle | Chenyu air conditioning (certified) | exhaust fan by Wu Cheng Chen-yu air-conditioning Co. wucheng Chenyu Air Conditioning Equipment Co., Ltd .. (www.wccykt.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Chenyu leadership with the air conditioning staff warmly welcome all inquiries negotiations to create Chenyu air conditioning better future.