Expert Suggestion For Safety and Long Term Using life : Pump Testing Before Using : 1. First,please install the test plugging head into the 8mm quick connector.Open the pressure relief valve(It is hebind the air pump).Please pump the air pump for 20 times continuously.(The correct way to pump the air pump is to pump it to the peak quickly and press it to the end with body weight ).If the pump is qualified ,you will feel relaxed when pulling up and down.The intensity is less than 2.4KGS. 2. Please tighten the pressure relief valve .When the pump reaches to 10mpa,please open the pressure relief valve and exhaust the air .Please tighten the pressure relief valve again .Please wait 2-3 minutes to check whether the pointer of the pressure gauge will fall or not when the air pump reaches 20mpa.If you need to check when the air pump leaks or not ,the best way is to put the basement ,hose and test plugging head into the water. If there is bubbles ,it means air leaks .Please use wrench to tighten it .If there is no bubbles ,it means it is ok for use.
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