Heidolph Hei-VAP Precision - Manual (Page 21)

Set-up and Start-up Set-up and Start-up
40 41
Release the evaporator flask from the vapor tube
1. Switch off the rotation.
2. Move the evaporator flask up from the bath (see chapter “Set-up and start-up“).
3. Let the evaporator flask cool.
4. Release the vapor tube coupling clamp flask ejector nut.
WARNING Glass breakage!
Serious injuries from shattering and breaking glass.
Check glass devices for damages (stars, breaks, etc.).
Only use perfect glass devices and replace all damaged
glassware as soon as possible.
Work carefully.
CAUTION Unintentionally rotating drive!
Injuries to hands.
Verify that the rotation is displayed.
WARNING Risk of injuries due to retracting or entrapment!
Risk of injury.
A risk of entanglement exists on the movable parts of the unit.
Wear suitable protective clothing for activities on the rotary
evaporator with goggles and gloves.
WARNING Hot media!
Burns.
Do not touch the interior and the upper edge of the heating bath, the
evaporator flask and the heating bath liquid.
Wear suitable heat protection gloves when changing the evaporator
flask.
5. Release the flask from the vapor tube (Figure 4-6 (7)) by turning the vapor tube
coupling clamp flask ejector nut counter-clockwise by supporting the flask.
6. Hold the evaporator flask and release the flask clamp.
7. Carefully remove the flask.
Insert the inlet tube
The inlet tube consists of:
▪ Stopcock (Stopper)
▪ PTFE tube
▪ Drain-off plate
WARNING Glass breakage!
Serious injuries from shattering and breaking glass.
Check glass devices for damages (stars, breaks, etc.).
Work carefully.
1 PTFE tube 3 Stopcock
2 Drain-off plate
Figure 4-15: Insert the inlet tube
3 2 1
1. Shorten the PTFE tube (1) to the desired length.
2. Grease the stopcock (3) (optional) for ideal vacuum.
3. Position the drain-off plate (2) so that the condensed liquid cannot return to the
evaporator flask via the PTFE tube (1).
4. Insert the inlet tube