The maintenance of pressure gauge

One, the pressure gauge run once every three months to the level of maintenance, the contents and requirements as follows: u see cock and trap pipe nipple, eliminate the leakage. Can u see the pressure gauge to zero. U see and scour trap tube to ensure unblocked. Second, the pressure gauge operation on a secondary curing a year later, the contents and requirements as follows: u will open it down pressure gauges, send metering section check and seal. U open it to check the trap tube, thread should be. U open it to check the three-way cock, ground sealing surface to ensure close not leaked, its cohesion thread should perfect condition. U trap tube, three-way cock derusting, besmear brushs the paint. Three, pressure gauge when using replacement when pressure gauge found in the work on time, it is necessary to timely replacement. Painted operation process is as follows: replace the pressure gauge is necessary through the metering section, seal, and calibrated the pressure gauge of the validity of the calibration certificate or have a factory in the new table. U in table before, it is necessary to the three-way cock spin to scour the orientation of the pressure gauge, trap tube dirt washed clean. Taken the three-way cock spin to make the pipe trap water bearing, using a wrench to remove the old table, put on a new pressure gauge. When u will t cock back to normal operation of bearing, take the new table into operation.