Operating the machine, 5 inserting the grinding jar, Caution – Retsch Cryomill User Manual
Page 31
Operating the machine
31
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5.5 Inserting the grinding jar
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CAUTION
Danger of injury and frostbite
Escape of liquid nitrogen
–
Liquid nitrogen has a temperature of
–196 °C and may cause injuries
similar to burns on skin or eye contact or frostbite.
•
Never switch the machine on without tightly closed cooling casing.
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CAUTION
Crushed or bruised fingers
Falling grinding chamber protective hood
–
The protective hood of the grinding chamber can cause crushed or bruised
fingers if it falls down.
•
Hold the flap tight when closing.
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5.5.1
Inserting and removing CryoMill special grinding jar
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CAUTION
Clogged piping
Formation of ice
–
Ice or foreign matter can clog the pipe and subsequently cause
malfunctioning.
•
Keep the cooling system and the supply pipe dry and free of foreign matter.
•
Do not insert the grinding jar if it is damp or covered with frost.
•
Use the cooling jacket sealing plug (KA) if you are not going to use
the device for a long time.
•
Do not let the device run without supervision.
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