Oxygen is the most common faults terminal leak, the leak occurred mostly because the oxygen outlet fouling, causing the valve closed lax, clean the valve, failure can be ruled out. When cleaning the valve, the valve to be closed before the terminal oxygen or reduce oxygen valve with new equipment, to avoid injury to the service personnel. Ward non-smoking, especially in the leak of oxygen in space. When oxygen caregiver may drain the oxygen flow meter terminal block oxygen, shut down the flow meter, and notify service personnel. Repair or every six months after oxygen equipment belt system, using oxygen flowmeter calibration device for oxygen terminal oxygen flow meter with medical equipment for examination is to ensure that the terminal oxygen safe and effective method. Provide medical devices with three-phase, usually neutral in the substation has a good grounding, therefore 220V AC supply voltage exists not only in the phase between the tranfer of oxygen equipment with manufacturers, but also the presence of a phase line and any other ground in the devices with between conductor, which is most of the reason of electric shock. When the power phase line (commonly known as FireWire) coated with an insulating material is destroyed or touch equipment breakdown phase leaving a cabinet, the cabinet will be charged. If the cabinet is not connected to the device ground, the body would have been a shock when touching the case. When the instrument housing is well grounded, a current safety into the ground, earth macro avoid electric shock hazard. With new equipment, Hebei Ericsson (online consultation), equipment with Ericsson by Hebei Medical Engineering Limited. Ericsson Hebei Medical Engineering Co., Ltd. (www.hslixin.com) Hebei Hengshui, a leader in medical device manufacturing equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Hebei Ericsson leadership with the staff warmly welcome all inquiries negotiations to create a better future Hebei Ericsson.