Heidolph Hei-VAP Core Betriebsanleitung Seite 72

Operation
Adjusting the rotation speed

The distillation speed can be increased by increasing the rotation speed. The shortened
distillation time contributes to the thermal protection of the distillation material.
However, depending on the size of the evaporating flask and the selected heating fluid,
different rotation speeds are appropriate.
Warning:
Risk of injury! Risk of entanglement!
When operating the device without a safety hood, you may get in
contact with rotating parts at the evaporating flask.
Rotating items can injure your hands or other parts of the body by
drawing in long hair, loose clothing or jewelry.
▪ Never touch any rotating parts.
▪ Do not wear loose clothing, belts or ties, which may be drawn in by
▪ Do not wear long necklaces or bracelets.
▪ Cover or tie back long hair when operating the stirrer.
Rotation speed range and adjustment
The rotation speed can be adjusted between 10 rpm and 280 rpm.
Warning:
Risk of scalding! Risk of slipping!
At high rotation speeds, the heating bath fluid can splash and/or spill
over, resulting in slippery floors and severe scalding.
If you operate the device without a safety hood:
▪ Always test the fluid used before a process and document the
▪ Make this documentation available to all your employees.
▪ Wear protective clothing near the device.
▪ Make sure the floor is clean.
➜ Test the fluid selected by you
▪ at slowly rising temperatures
▪
with your different evaporating flask sizes
▪
with rising rotation speeds
➜ Note the results and make them available to all your employees.
The viscosity and volume of the oil change depending on the oil
selected, the age of the oil and the setting of the bath temperature.
For this reason, document both the exact name/manufacturer
specification and the period of use for oil and repeat the documentation
at specified time intervals.
rotating parts.
spraying behaviour!
Operation
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