Pneumatic motor valve for common problems ( 1)

when pneumatic valve motor in a moment or a long time operation, the motor temperature maintenance failure: motor with temperature control switch. Motor temperature rise, beyond set temperature, temperature control switch immediately to cut off the control circuit, have the effect of maintenance of motor.
short intermittent duty ( Min has cooled. According to GB. - Requirements, pneumatic motor valve for rare breakdown is as follows: low protection grade: types of electric equipment form a complete set of pneumatic valves for fully enclosed squirrel-cage motor structure. Minimum degree of protection IP, the highest degree of protection IP pneumatic valve working condition and environment is different, have different requirements of protection class. Protection grade low lumen will cause motor be affected with damp be affected with damp or dust and other foreign invasion, the motor insulation resistance drop caused damage.

the packing should be strong and reliable. In the process of transportation due and rainproof measures, improper packing, transportation and storage: pneumatic valve denso packaging should be waterproof, moisture-proof, dustproof measures. Products to the scene should be stored in ventilated and dry place, not in open air. Commissioning or maintenance banned in rainy weather, after debugging to tighten fasteners, all local seal tightly in place to ensure that all electrical and reliable.

open-close torque size effect using pneumatic valve, pneumatic valve types selection and improper trip position adjustment control: electric pneumatic valve is equipped with two important parameters. 1) pneumatic valve open-close torque value should include the practical work of torque value and torque pneumatic valve itself value. Big bad, forces small easy to leak. Should have enough allowance (related General requirements is greater than the actual pneumatic valve operating torque value. 。 Times (2) the trip position control and pneumatic valve diameter size and length of opening and closing and structure form and so on. Pneumatic valve types of electric equipment form a complete set of motor for the special motor, short work, time - Min, such as high load in short work time, damage to cause the loss of the motor heat insulation class.

the actual output torque did not have enough corresponding allowance, pneumatic valve, denso and motor model mismatch: the selected motor type does not match with denso requirements. Super load from motor damage during operation.

the poor quality of electrical components, pneumatic valve types within the micro switch is the key to control body parts, electrical maintenance failure. When the pneumatic cross valve stroke position, micro switch to cut off the power supply, overload protection function. Most denso factory will travel with the torque in series with the protection when the stroke or ultra torque, micro switch in time to cut off the control power, ac contactor coil so as to cut off the main loop of the motor.

cavity in the body of the lubrication grease through cable and outlet into the motor inside cavity is easy to make the winding short circuit and burn out. (2) according to the JB - Improper use, debugging device: 1) pneumatic valve types are divided into horizontal and vertical installation. The end of a vertical device when the motor below. When threading sleeve rubber pieces of seal failure. Electric device of the wheel rotation direction should be consistent with the output shaft rotational direction and to close the pneumatic valve clockwise, counterclockwise for pneumatic valve open. If not in conformity with provisions of actual rotation direction of motor, the need to change any two phase of three-phase power supply ( Switch can otherwise due to the inverse, motor damage disable maintenance measures. (3) the pneumatic motor is valve for high load short work. If continuous rated time overstepping debugging time is too long, lead to motor heat damage

pneumatic valve types do not accept axial thrust. Thrust type most of threaded connection, pneumatic valve electric and pneumatic valve connection does not match: multi-turn type pneumatic valve types are divided into torque and thrust type two kinds. Mostly for three jaw torque type connection or key links. Can withstand larger axial thrust. To pneumatic electric and pneumatic valve connection between valve is not necessary to intervene with restricted mating surfaces of pneumatic valve and electric pneumatic valve is equipped with the appropriate clearance. Make the installation on the output shaft of the worm shaft not jumped out to a, to ensure that the worm gear and worm mesh mesh center plane has a good effect, ensure transmitting torque at rated output torque value.