The boiler pressure gauge maintenance and calibration

Maintenance (1) pressure gauge, pressure gauge, the area shall be kept clean, glass on the dial should be bright and clear, clear the indicating pressure value can be reading. (2) the pressure gauge of the connecting pipe to purge regularly, in order to avoid congestion. Purge operation, slowly turn the three-way valve, avoid the damage of pressure gauge parts. (3) regular inspection gauge pointer rotation and volatility is normal; To check whether there is water and air pressure gauge connection pipe. Pressure gauge, have one of following cases should stop using: nail, a limited check pressure gauge in the absence of pressure, can't return to the hands nail limit; No limit pin gauge, in the absence of pressure from null pointer value exceed rules permit gauge error. B on the surface of the glass broken or dial scale fuzzy; C seal damage or exceed the calibration validity; D table disclosure or pointer to beat; E other defects affecting the pressure gauge accurate instructions. Second, pressure gauge calibration pressure gauge should be done before the installation, after installation check at least once every six months.