Freeze Dryer Maintenance

Maintenance for Freeze Dryer System

When the Freeze Dryer has accumulated 1000 operating hours, an alarm will flash on the display menu. Press and hold SELECT for 5 seconds until the error has cleared. Check the oil at this point, if the oil is clean and clean then the system is fine to operate as usual. If the oil is cloudy and/or contains particles replace the pump oil.

Replacing Pump Oil

Use Edwards Ultra Grad Pump Oil (Catalog Number H11025015) to ensure an efficient system. Open the exit valve located on the lower right-hand side of the pump and allow the used pump oil to drain into a sealable receptacle. This receptacle will need to be stored and disposed of through EHS. Once the pump is empty of used oil flush the system will new oil and run the pump for 5 to 10 minutes to allow the oil in the pump to warm up. Empty the oil again into the used oil container and seal up the exit value. Fill the pump with clean oil past the safety line and seal up the pump. Ensure that the filter is clean of dried oil and working properly. Filter is located on the upper left-hand corner of the pump.