1.When dripping from bleed screw stops and gauge stabilizes, record the differential pressure and retighten bleed screw.
当从排气螺丝的滴漏停止，并且仪表稳定后，记录压差并且重新紧固排气螺丝。
2.Loosen hose at VB, open TC #1 and bleed, retighten hose connection.
松开阀门B上的软管，开启测试旋塞1号并且排气，重新紧固软管连接。
3.Close valve C. Open valve A, then open valve B 1. 2 turn, loosen hose at test cock #4 to remove air. Retighten hose.
关闭阀门C。开启阀门A，然后将阀门B开启1.2圈，松开测试旋塞4号上的软管排出空气。重新紧固软管。