Manual

ManualsBrandsRetsch ManualsEquipmentCryoMill Autofill 50l

Operating the machine

• Close the waste gas / overflow valve (V3).

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4.7 Pressure build-up

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• Close the withdrawal valve (V1) and the waste gas / overflow valve (V3).

• Open the pressure build-up valve (V2).

• Watch the pressure indicator (DM).

• Close the pressure build-up valve (V2) as soon as the needle reaches the

red marking or nitrogen comes out of the pressure relief valve (PSV).

Fig. 6: Pressure gauge

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4.8 Withdrawal of liquid nitrogen

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• Attach the liquid nitrogen line to the CryoMill and to the connection (SA).

• Open the filling and withdrawal valve (V1).

• After taking the liquid, close the filling and withdrawal valve (V1) again.

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4.9 Pressure relief

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• Close the pressure build-up valve (V2).

• Open the waste gas valve (V3).

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4.10 Transport

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CAUTION

Risks of liquid or gaseous nitrogen

Positive pressure in the vessel

– The introduction of energy during transport can cause a sudden surge in

pressure. Nitrogen is blown off then and this can cause a lack of oxygen,

cryogenic burns, oxygen enrichment and associated risks.

• Make sure the vessel is depressurised before you transport it,

• Remove the siphon and put in the transport plugs.

• Transport the vessel only in an upright position.

• Avoid impacts and vibrations.

• Secure the vessel against falling down, rolling away and damage.

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It is impermissible to use the following agents and tools:

• pliers

• striking tools