The working principle and common troubles of screw compressor.
4.1 remove the solenoid valve: remove solenoid valve and check valve in the O ring and a sealing piece is need to change (Note: if not familiar with the intake valve also please the element position of the removed down to avoid loading error, such as back) need not change will remove the screws, O - ring, seal sheet, rod, electromagnetic core components into a prepared container, and add the appropriate cleaning agent soaking (Note: in the selection of gasoline and water for days cleaning please don't put the O ring rubber products to soak for too long, so as not to corrupt);
1, check the screw compressor parts of the electrical contact and insulation resistance: air compressor electrical parts are divided into the main circuit, control circuit and signal transmission (temperature, pressure sensor) circuit. Because the operation of air compressor vibration generated when the time, often after part of the wire joints will appear loosening, wire joints loose light caused by the unit can be started, weight is caused by protection function failure, arc short circuit, electric shock hazard severity. Therefore, the electrical part should be checked regularly. Check one by one hand swinging wire, thread feel tightness, loose thread should be fastened; in addition, a shaking table test, and the motor insulation equipment, insulation resistance should be controlled in more than 500 megohm, otherwise should be drying or maintenance treatment.2, in order to change the motor grease under proper lubrication, ensure the service life of 3 screw compressor cleaning unloading valve (also called the intake valve): 3.1 unloading valve components: relief valve from the valve body, valve core (piston), gas manifold, solenoid valve and proportional valve (capacity adjusting valve) etc.. 3.2 unloading valve: unloading valve main control air compressor load (screw compressor truck) and unloading (empty), the ratio (adjustable) control building, also can prevent air compressor shutdown when the lubricating oil from the host spray 3.3 unloading valve disassembly: 1 remove the reducing valve and the air hose load the filter is connected; 2 removal of all other components and unloading valve connected pipe; 3 solenoid valve coil 4 demolition; demolition nut unloading valve assembly with the host and take off; 5 the unloading valve to clean or clean shop tiles laid on the ground.
1. Check the contact and insulation resistance of the electric parts of the screw compressor;2, change the motor grease (every 8000 hours running change once), such as equipment specifications have parameters, the manual shall prevail;3 、 cleaning the reducing valve (intake valve);4. Clean the minimum pressure valve (pressure maintenance valve);Five 、 check valve for cleaning and returning oil;Six 、 cleaning temperature control valve;7. Clean the cooler;8. Clean the water separator;9. Correct all parameters. Note: the above maintenance shall be carried out after the equipment is confirmed free of electricity and pressure.
