Standard Shutdown Operation for Freeze Dryer

After finishing one batch freeze drying production on freeze dryer, operators cannot cut off power supply directly. Improper emergency shutdown will cause heavy damage to vacuum pump and refrigeration system of food freeze dryer. The standard shutdown procedure is as follows: first stop shelf heating function of freeze dryer; wait until material temperature drops to safe range; slowly release vacuum and recover chamber pressure to normal atmospheric pressure; open chamber door after pressure balance; then turn off vacuum pump unit, refrigeration unit and cooling water system step by step, finally cut off main power of vacuum freeze drying equipment. Operators must strictly follow shutdown operating specification to protect fruit and vegetable freeze dryer, reduce component wear, and lower the probability of sudden failure on freeze drying production line.