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5.4.
REFRIGERATING UNIT
In order to assure a suitable refrigeration of the refrigerating unit (refrigerated via forced air circulation by means of a
fan), all vents must be separated by at least 20cm from other equipment or the walls.
6. RECOMMENDATIONS
6.1.
ICE CONDENSER
Before each operation it is necessary to open the water drain valve of the condenser in order to assure that the ice
condensed during the previous operation has been totally eliminated. If water residues remain in the condenser or the
drain pipe, they will be frozen as a result of the vacuum, thus possibly compromising work conditions.
6.2.
GREASING
Slightly grease the airtight seals with silicone grease. The contact surfaces should always be kept clean and greased.
Avoid dirt accumulation.
6.3.
LONG STOPPAGE
If the freeze-dryer is stopped for a long period of time, the oil of the vacuum pump must be changed to ensure that
there is no corrosive waste resulting in damage. Disconnect the unit from the power supply. Clean all the components
of the equipment (manifold, chamber...), check that the condenser has been completely emptied and grease the
airtight seals of the chamber, valves and condenser.
IM-LYOQUEST-EN-SP-1016a.doc
ULVAC GLD-136C
Fig. 2
ILMVAC P6Z-101
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Fig. 3
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