Hi there is little control in the housekeeper, new design, new installation of control system, in order to ensure the normal order of the control valve when it starts to work, and make the system safe operation, first before installation of valve, should first check valve nameplate marking comply with the design requirements, but also respond to the following program debugging,

The basic error limits; All the schedule deviation; Back to the poor; Dead zone; Leakage (in demanding situations), if the regulator in the original system during overhaul, apart from the above project for validation, along with the old fittings and valves of the stuffing box seal and other parts for inspection, at the scene, many are not because of the quality problem of the valve itself, but because of improper use of valve installation, such as the installation environment, installation position and direction pipe improper or not clean, therefore, in the installation and use of electric control valve should be paid attention to the following aspects:

(1) control valve belongs to the field instruments, environmental temperature should be between 25 ー - 60 degrees, relative humidity of 95% or less, if the installation in the open air or under high temperature, waterproof, should be taken measures to cool, away from the source increase anti-shock measures or where there is the source,
(2) control valve should be installed vertically, under special circumstances can tilt, such as large tilt Angle or the valve itself weight, should be equipped with protection devices on valve stents,
(3) don't install the pipes of the regulator in high above the ground or ground of place, in the pipeline when more than two meters high, should set up the platform, as far as possible to facilitate the handwheel operation and maintenance,
(4) before installing the valve, the pipeline cleaning, remove dirt and welding slag, after installation, no residues in order to ensure that the impurities in the valve body, also should start cleaning valve, namely through the medium make all valves open, in order to avoid adhesion of impurities, the handwheel institutions after use should be restored to the original neutral position,
(5) in order to make the control valve in the event of a fault or repair can continue to production, should increase the bypass pipe valve, at the same time, it is important to pay special attention to the control valve is installed to meet process requirements,
(6) electrical part of electric control valve should be in accordance with the relevant structure required to install electrical equipment, such as whether the explosion-proof products should be in accordance with the "explosive dangerous location" electrical equipment installation standard requirements for installation, at the same time, when removing the explosion-proof surface don't damage or scratches, servicing to restore to the original state of explosion-proof requirements,
(7) actuator reducer after repair should be paid attention to lubrication, low speed motor is generally not flush, after assembly should also check whether the open valve and valve position indicator is consistent,