Solutions to common failures of refrigeration control systems

Solutions to common failures of refrigeration control systems

1. The solenoid valve coil is burnt out

　　 Phenomenon is that there is no heat in the low-voltage negative electromagnetic coil shell, and it is short-circuited with a multimeter RX10. The solution is to replace the same type of coil separately.

　　 2. The spool is dead

　　 phenomenon is no opening and closing action,

　　A. When the cold storage is installed in the closed position, the low pressure is negative and there is no refrigeration cycle.

　　B. Put it in the open position, the high and low pressure will quickly balance after parking, and it is easy to cause liquid when driving. The solution is to clean.

　　 Lax closure

　　 The phenomenon is that the high and low pressure balances quickly during a period of parking, and sometimes there is liquid phenomenon in the world situation. The solution is to replace the iron core.

　　 Three, oil blockage, dirty blockage

　　 The phenomenon is that there is a feeling of coldness or frost in the micro-blocking state, until it is fully blocked and the low pressure is low, which affects the refrigeration cycle.

　　 Fourth, the pressure controller does not produce action

Phenomenon: (1) The electrical circuit is faulty or wrongly connected; (2) The electrical contacts are roughened or adhered; (3) The operating components of the cold storage engineering machinery fail; (4) The connecting pipeline is blocked by oil; (5) No signal input; ( 6) There is leakage;

Out of control: The phenomenon is: (1) The set value is wrong; (2) The positioning falls off; (3) The mechanical component is deformed and the spring force changes value; (4) The high and low voltage signal is connected incorrectly, and the signal tube is deformed or bent to cause internal resistance; (5) Analysis and treatment of common failures of the remote cold storage refrigeration control system of the pressure controller.

　　 5. The solenoid valve coil is burnt out

　　 Phenomenon is that there is no heat in the low-voltage negative electromagnetic coil shell, and it is short-circuited with a multimeter RX10. To solve the cold storage maintenance method, the same type of coil can be replaced separately.

　　Spool dead phenomenon is no opening and closing action, cold storage maintenance

　　A. The low pressure is negative when placed in the closed position, and there is no refrigeration cycle.

　　B. Put it in the open position, the high and low pressure will balance quickly after parking, and it is easy to cause liquid when driving. The solution is to clean.

　　 6. Lax closure

　　 The phenomenon is that the high and low pressure balances quickly during a period of parking, and there are sometimes liquid phenomena in the world situation. The solution to the maintenance of the cold storage is to exchange the iron core.