Safety Lift - VWR RV 8 Indicationes De Seguridad

switching on the rotary drive! Sudden foaming or exhaust gases indicate that flask
content is beginning to decompose. Switch off heating immediately. Use the lifting
mechanism to lift the evaporation flask out of the heating bath. Evacuate the danger
zone and warn those in the surrounding area!

Safety lift

When the device is switched off or the power supply disconnected, the internal safety lift removes the
evaporating flask from the heating bath.
The safety lift at loss of power is designed for a maximum total weight (glassware and solvent) of 3.1 kg.
Sample calculation of the maximum load with vertical glassware and a 1 litre flask:
Condenser + receiving flask + evaporating flask + fittings=1200gr + 400gr + 280gr + 100gr = 1980 gr
Maximum loading of solvent = 3100gr – 1980gr = 1120 gr
Due to the design, operation of the safety lift cannot be guaranteed for higher loads!
When using other types of condensers such as dry ice or intensive condensers, and also when using return
distillation distributors with slip-on condensers, it may be necessary to reduce the load by the amount of the
added weight of the glass apparatus.
Thus, prior to distillation, check whether the lift, laden with the glassware and distillation material, rises when
power is lost.
The safety lift must be checked daily prior to operation!
Attach the maximum total weight of 3.1 kg to the lift. Manually move the lift to the lowest position and press
the "Power"key on the front panel or the main switch on the back right side of the device.
The evaporating flask is lifted out of the heating bath.
Note: The behavior when switching off and disconnecting the power supply exhibits a delay compared to the
behavior when switching off using the "Power" switch on the front membrane.
If the safety lift does not work, please contact the VWR
For the evaporating equipment (evaporating flask plus contents), the maximum permissible weight is 3.0 kg!
Loads greater than this risk breakage of glass at the steam pipe!
Ensure that the safety lift has been powered down.
When working with large loads, always use low speeds.
Unbalanced loads can result in breakage of the steam pipe!
• A vacuum may be formed inside the glassware in the case of power outage. The glassware must be vented
manually.
• Never operate the device when the evaporation flask is rotating and the lift is raised.
• Set the speed of the drive so no tempering medium is sprayed out as a result of the evaporation flask
rotating in the heating bath. If necessary reduce the speed.
• Do not touch rotating parts during operation.
• Imbalance may result in uncontrolled resonance behavior of the device or assembly. Glass apparatus may
Always lower the evaporation flask into the heating bath first before starting the
rotation drive. Otherwise hot tempering medium may be sprayed out!
Service department.
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