How to eliminate common faults in freeze dryers

1. Fault phenomenon: The dryer does not run the compressor line. The fuse is blown. The thermal relay operates. The high-voltage switch operates. The compressor is blocked or disconnected. 2. Fault phenomenon: The ambient temperature is too high after the dryer starts. The condenser is clogged? The compressor is overloaded. The refrigerant is low. The low pressure is too low. The intake air is too large. The compressor is stuck. 3. The fault phenomenon: the compressor does not start. The wiring is incorrect. The voltage is too low. The startup capacitor is damaged. The relay or contactor is not closed. The open winding is open. Phase 4. Fault phenomenon: The compressor repeatedly starts and stops the low voltage due to the overload protection action or the three-phase unbalanced overload protector is connected with other electrical equipment. The overload protector malfunctions. The running capacitor is too small. The exhaust pressure is too high. Thermal relay contacts are stuck 5. Fault phenomenon: The relay burnout voltage is too high or too low. The running capacitor is incorrectly started and stopped repeatedly (Refer to 2 and 3). The relay specifications are not correct. The mount is incorrect. 6. Fault phenomenon: The capacitor burnout specification is not The matching voltage is too high. 7. Fault phenomenon: Excessive exhaust pressure. Excessive refrigerant amount. There is air condenser in the refrigeration system. The ambient temperature is too high. The fan pressure is on. The faulty fan motor is faulty. The fan rotates in the wrong direction. The cooling water flow control valve is faulty. 8. Fault phenomenon: the exhaust pressure is too low. The refrigerant dose is too small. The fan pressure switch is faulty.

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