Care And Maintenance - Stuart RE300 Assembly And Operating Instructions Manual

k) If evaporation at reduced pressure is required a vacuum line
should be attached to the vacuum side arm on the condenser.
Turn on the vacuum and set to required value.
N.B. A vacuum pump designed for use with the RE300 is
available from Bibby Scientific, code RE2022C. Please
contact the sales office for details.
l) Set the temperature of the water bath as required.
m) When evaporation is complete release the vacuum by slowly
unscrewing the vacuum release screwcap. Set the rotation speed
to 0 and raise the glassware clear of the bath.
Continuous Feed Operation
When the apparatus is used under reduced pressure it is possible to
replenish the liquid in the rotating flask without interrupting the
evaporation or removing the flask.
The following procedure should be adopted.
a) Attach a length of flexible tubing to the continuous feed inlet of
the feed/release adapter (see fig.4).
b) Carry out instructions b-k for batch operation.
c) Immerse the free end of the flexible tubing into the container
holding the liquid to be evaporated. Ensure there is no strain on
the feed/release adapter.
d) With the apparatus under vacuum slowly open the stopcock on
the feed/release adapter. The vacuum will draw liquid into the
rotating flask.
e) Close the stopcock when sufficient liquid has entered the flask
Further quantities of liquid may be added during evaporation by
reopening the stopcock.
N.B. Ensure there is sufficient capacity in the flask to cope
with the addition. Never fill the flask more than half full.
N.B. Ensure there is sufficient capacity in the receiving flask
to cope with the condensation.
N.B. This evaporator should not be used with rotating
flasks bigger than 2 litres or receiving flasks bigger than 1
litre capacity.
f) If the receiving flask should require emptying during operation
the following procedure should be adopted:
i Release the vacuum and stop rotation
ii Raise the glassware clear of the water bath
iii Wait until boiling stops and liquid stops dripping into the
receiving flask
iv The receiving flask may now be removed.
g) When evaporation is complete release the vacuum by slowly
unscrewing the vacuum release screwcap. Set the rotation speed
to 0 and raise the glassware clear of the bath.

Care and Maintenance

IMPORTANT: Before commencing any maintenance operation or
replacement of components parts the unit should be isolated
from the electricity supply, water supply and vacuum line.
These operations should only be undertaken by suitably
qualified personnel.
Note: F3.15AL (20x 5mm) fuses fitted in both live and neutral
lines.
Glassware
All glassware parts should be cleaned regularly and examined for
scratches, cracks and chemical etching. Replace any damaged parts.
Plastic coated glassware
The plastic coated glassware should not be exposed to temperature
above 80°C and is not dishwasher proof.
Cleaning
The main stand and motor should be cleaned using a mild detergent
solution.
Vacuum Seal
It is recommended that the vacuum seal be regularly washed with
distilled or deionised water and allowed to dry naturally.
Removal of the Vacuum Seal
a) Remove the rotating and receiving flasks
b) Remove feed/release adapter
c) Remove condenser
d) Withdraw vapour tube from the bearing housing by completely
unscrewing the plastic screw bush on the right side of the bearing
house.
e) The vacuum seal may now be removed.
f) Reassemble following the assembly instructions in this manual.
Servicing
It is recommended that any servicing or repair is only undertaken by
suitably qualified personnel.
Only spare parts supplied by Bibby Scientific or its agent should be
used. Fitting of non-approved parts may affect the performance of the
safety features of the instrument.
If in doubt, contact the Technical Service Department of
Bibby Scientific Ltd.
Stone, Staffordshire ST15 0SA
United Kingdom
Tel: +44 (0)8449 360234
Fax: +44 (0)8449 360235
e-mail info@bibby-scientific.com
www.bibby-scientific.com
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