Maintenance contents air conditioner parts: ⑴, checking air conditioner refrigerant cooling system high pressure, low pressure is normal. ⑵, check the air conditioner refrigerant cooling system for leaks; if need to add refrigerant. ⑶, check the compressor running current is normal. ⑷, check the compressor operating noise is normal. ⑸, check the compressor's operating voltage is normal. ⑹, check the compressor oil level, color is normal. ⑺, check the compressor oil pressure, oil temperature is normal. ⑻, check the air conditioning host phase sequence protection is normal, with or without phase situation. ⑼, check the air conditioning host various terminals loose. ⑽, check whether the water flow protection switch is working properly. ⑾, check the computer board, temperature probe resistance is normal; ⑿, check the air conditioning host air switch is normal; AC contactors, thermal protection is good. Refrigeration and Air Conditioning Maintenance Section for fan coil every six months to conduct a clean maintenance, air filter cleaned once a week, remove the air in the coil, check the fan rotation is flexible, if there are still obstacles rotation phenomenon fan coil cleaning prices, should filling oil Tangshan fan coil cleaning, if abnormal friction noise fan bearings should be replaced. For motor driven fan, with 500V shake table detection coil insulation resistance should not be less than 0.5MΩ, or should be dried or refurbished replacement fan coil, check whether the deformation of the capacitor, the case should be replaced with standard capacitance fan coil cleaning process, check the lugs are secure, clean fan blades, coils, water dirt on the disc, but the disc with a hydrochloric acid solution to clean the inner wall of dirt, then tighten all fasteners, clean the fan coil housing . Tangshan fan coil cleaning, central air-conditioning maintenance (certification), fan coil is provided by Jinan Durkin central air conditioning Engineering Limited. Jinan Durkin central air-conditioning Engineering Co., Ltd. (www.djzyktgc.com) Shandong Dezhou, heat, refrigeration and air conditioning equipment leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Central air conditioning leader in Germany with the staff warmly welcome all inquiries negotiations to create Durkin central air conditioning a better future.