air condition refrigeration charging manifold gauge set for r134a r12 r22 r404z<br /><br />? specification<br />main color:blue｣ｬred and yellow<br />overall sizeapprox.:170mm/6.69｡ｱl<br />cable length:96.5cm<br />detail size as shown in the picture<br />material:aluminum alloy｣ｬ plastic and rubber<br />pressure range:0-10mpa<br />connection mode:1/2pt<br /><br />? feature<br />1.100%  and high quality.<br />2.it is durable and convenient.<br />3.simple design and easy to use.<br />4.complete diagnostic and service gauge set for use on air condition systems.<br /><br />?fitment:<br />for refrigerant maintenance｣ｬ includes cfc｣ｬ hcfh｣ｬ hfc etc.<br />for r134a r12｣ｬ r22｣ｬ r404z and 410a<br /><br />how to connect the systemfor reference only<br />a.make sure the pointer of gauge is in the zero position｣ｬ if not｣ｬ please open the cover and twist the screw3.<br />b.connecting system:<br />  close the low pressure valve6 and high pressure valve7.<br />  connect interface4 to blue cable low pressureconnection and then connect to the low-pressure connection of system.<br />  connect interface5 to red cable high pressureconnection and then connect to the high-pressure connection of system.<br />  connect interface8 to yellow cable｣ｬ vacuum pump.<br />c.system vacuum-pumping:the system should be at ordinary pressure in this step<br />  open the vacuum pump.<br />  open the low pressure valve6｣ｬ high pressure valve7 and then open low/high pressureconnection｣ｬ the system begins to vacuum.<br />  after 10-30min｣ｬ please check the system whether completely vacuum or not. if not｣ｬ please check leak of system and vacuum again.<br />  close low pressure valve6 and high pressure valve7｣ｬ then close the vacuum pump.<br />d.filling the refrigerant:<br />  release the connection of yellow cable and vacuum pump｣ｬ and connect the yellow cable to refrigerant bottle. then open the refrigerant bottlepositive direction｣ｬ open valve core of the gauge｣ｬ clean out the air of the cable.<br />  invert the refrigerant bottle｣ｬ open low pressure valve6 and high pressure valve7 to fill refrigerantspecified amount which provided by producer of each system.<br />  close low pressure valve6 and high pressure valve7｣ｬ then put the refrigerant bottle in positive direction.<br />  open the system5-10min｣ｬ check the pressure and temperature of the system｣ｬ if the refrigerant is not enough｣ｬ open the low pressure valve6 to fill refrigerantdo not open high pressure valve7. if refrigerant is too much｣ｬ please close the bottle and open the high pressure valve7 slowly｣ｬ release the refrigerantthe valve core. close the high pressure valve7 and check again.<br />  when everything works correctly｣ｬ close the low pressure valve6｣ｬ  high pressure valve7 and release low/high pressureconnectionthe systemnotice:hot temperature<br /><br />? note:<br />1.we provide clear pictures｣ｬ measurements where possible. please check as much as possible to make sure the item is the one that you need.<br />2.please allow 0.5-1 inch difference due to manual measurement.1 inch=2.54cm<br />3.the color of the actual items may slightly differentthe listing images due to different computer sn｣ｬ thanks for your understanding.<br />4.although instruction is included｣ｬ it｡ｯs in chinese｣ｬ professional installation is highly recommended!<br /><br />? package included:<br />1x manifold gauge set