(1)The test pin is stainless steel hollow needle, it will break when improper use . So when the needle is inserted into the membrane testing in same direction but not left and right direction so as not to break the needle .
(2)When the temperature is below 15 degree, the membrane turn hard not being easily inserted . In this case, the membrane can be heated manually by handle heater.
(3)Testing needle insertion depth depends on weld length and time-dependent leak .At longer time , you can slowly push the needle forwardly to ensure tightness between the needle and the membrane to prevent leakage of needle , to ensure the successful completion of testing.
(4)The test pin is properly connected with the air pump operation . Note the pump connector needs into the soft tube, which pressing on the black locker , and connecting the needle valve inside the folder to the inflatable mouth ( similar as bike inflatable ) .
(5)The test needle can be determined. Method is to use your fingers to suppress the pinhole . While testing needle being filled with certain air , it is normal if reading of pressure gauge keep same after a few minutes of reading the same normal.
(6)Being filled with certain air , if the pressure gauge reading remains unchangeable for some time , then weld quality standards.
(1)Test pin should be properly and cleanly kept . Shall handled carefully to avoid damage.
(2)Generally the pressure of needle is appropriate at 3/ 4 of cap , not necessary full . The instrument should be checked regularly to ensure the accuracy..
(1) pressure testing needle 1 set
(2) Manual 1copy
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