The reason why the air compressor is unable to start the air compressor

　　There are many reasons for the shutdown of air compressors, so we need to analyze and solve them according to different situations. Then we can solve them according to the following steps.

　　(1) the refrigerant is insufficient or excessive, please fill the vacuum, add enough refrigerant or release excess refrigerant.

　　(2) the capillary assembly (containing the filter) is blocked and the suction temperature rises, please replace the capillary assembly.

　　(3) the internal leakage of the four valve, constitutes a misoperation, and confirms the update after the damage.

　　(4) the air compressor itself malfunction, such as short circuit, circuit breaker, touch the shell and so on, check the air compressor after inspection and confirmation.

　　(5) protect the relay itself fault, please use the multimeter to check the contact of the air compressor when the contact is not hot or not, if the new protector is not changed. When the 5528 or 5532 air compressor is replaced, the starting capacitor and the starting relay are checked (if one of them is damaged, the two must be replaced at the same time).

　　(6) high pressure pressure, pressure relay action, please analyze the reason, in accordance with the situation to be excluded.

　　(7) if the condenser is ill ventilated or the air current is short circuited, please remove the obstacles outside the chamber and clean the condenser.

　　(8) the system is mixed with non condensable gas (such as air, etc.), please evacuated and reperfusion.

　　The operating current of the air compressor is too large, please find out the reason to be excluded.

　　The outdoor unit is too high in ambient temperature. Please keep away from the heat source and avoid the sun.

　　The cylinder or shaft of the air compressor. Using a rubber hammer or hammer cushion block tapping vibration of air compressor shell, or by using the method of parallel capacitor, the fluoride may make air compressor no-load, start running, but if the invalid should replace the air compressor.

　　The common reasons why air compressor can not start normally:

　　1. If the contactor is not closed, it is mainly due to the electrical cause of the air compressor.

　　(1) first, check whether the wiring of the air compressor power is correct, whether the power switch is closed, whether the power fuse is blown, whether the power voltage reaches 90% or more of the rated voltage.

　　(2) check whether all the components of the pressure relay of the air compressor are damaged or not, and the given value of the pressure relay is suitable.

　　(3) check whether there is leakage in the temperature controller of the air compressor temperature controller, the components of the controller are damaged or not, and the temperature indication position is properly adjusted.

　　Two. If the contactor has been closed and the air compressor can not start, it is likely to be a motor failure or a mechanical failure of the air compressor.

　　(1) check whether the phase sequence of the motor wiring is correct or not, try to see if the motor winding has short circuit or circuit breakage by using the multimeter.

　　(2) check whether the operating parts of the air compressor are not lubricated or the gap is too small to hold the shaft and cylinder. When the shaft or cylinder failure occurs, the impurities in the lubricating oil should be removed, the new lubricating oil is replaced, and the oil road is unblocked.

　　The reason for the air compressor to be unable to start

　　1. outside the three machine power power failure or underphase.

　　2. emergency stop button failure or wire loosening.

　　3. the air compressor is in the automatic stop state or the exit switch is not opened.

　　4. transformer fault or line drop.

　　5. control panel failure.

　　6. starter coil failure or contact bad contact.

　　The 7. air compressor is in a state of failure.

　　The 8. transmission belt is broken. How to do the high temperature in the air compressor in summer

　　9. power switch off or fuse break.

　　The air compressor can not start the corresponding treatment method:

　　(1). The switch and measurement of three-phase voltage check.

　　(2). Check the emergency stop button, open and check whether the wire is loose.

　　(3) check whether the export pressure is higher than the setting.

　　(4). The transformer will replace the new product or reconnect the wire.

　　(5). Replace the control panel.

　　(6). Change the starter or contact inspection and maintenance.

　　(7). Troubleshooting.

　　(8). Install a new belt

　　(9). After checking the circuit of electrical apparatus, the switch is restored.

　　How should the air compressor start?

　　Air compressor startup needs to start up, generally using water resistance cabinet start. Liquid resistance starting cabinet is a kind of motor starting equipment which has been widely used in recent years. The liquid resistance, as the name suggests is the stator loop (cage motor) or rotor circuit (for winding motor) series motor liquid resistance, liquid in the process of starting resistance in a predetermined period of time continuously decreases, until the resistance is close to zero, the liquid resistance automatic motor into normal operation, resection. At least you can start 3-5 times per hour.

　　Liquid resistance starter cabinet is composed of the following parts: water tank, plate (moving plate and static plate), a transmission mechanism, a limiting mechanism (switch) and related electrical components, such as relay (or PLC), time relay, contactor, buttons, lights and other shape wherein, mainly applicable to 400V, 3KV, 6KV, 10KV various voltage levels, power range from 500KW - 30000KW, and the frequency sensitive resistor, frequency converter, reactor and other starting mode, starting with high power factor (for resistive load), low cost, easy maintenance and so on, can be the lowest motor starting current is limited to 1.3 times the rated current effectively, reduce the impact on the power grid to start the motor, thus widely in recent years by the users of the pro lai.

　　Working principle：

　　1, place the water resistance cabinet and add water in the water tank to the appropriate water level.

　　2, add the appropriate electrolyte in proportion, the electrolyte is named sodium bicarbonate, that is, baking soda.

　　3, check whether the water tank has drainage and insulation is normal; access the power required for the water resistance cabinet (three phase and four wire 380V), manually test the operation direction of the moving pole, if the direction is not correct, change the phase sequence.

　　4, single machine debugging water resistance cabinet is normal, focus on checking the limit switch, time relay and so on; 5,