Common faults and troubleshooting methods for freeze dryers
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Fault phenomenon 1: 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 the circuit is disconnected or loose. 2: The condenser is stopped within a short time after the start of the dryer. Blockage? Compressor overload lacks refrigerant low pressure too low intake air volume too large compressor jamming failure phenomenon 3: compressor does not start wiring incorrect voltage too low start capacitor damage relay or contactor does not close start winding open phase loss phenomenon 4: 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. The short-circuit between the windings is short. Sticky fault phenomenon 5: 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. Symptom 6: Capacitor burnout specification does not match the voltage is too high. 7: Exhaust pressure is too high, too much refrigerant charge, there is air condenser in the refrigeration system, the dirty environment temperature is too high, the fan pressure switch has