Operation - Bibby Scientific Techne SBL-1 Manual Del Operador

1. Fill the SBL-1 to within 40 mm (1.5" to 2") or the SBL-2 and SBL-2D to within 76 mm (3") from the
top with the alundum. Make sure it is dry.
2. Slowly open the air control valve until the bed gives the appearance of continuous boiling. The bath
is now ready for use and temperature setting.
3. If a rapid heat-up of the bath is required, set the heater switches to 'high'(SBL-1, 2kw, SBL-2, 3kw,
SBL-2D, 4kW, and set the energy regulator knob to a high value (say 8 or 9 on the scale), then as the
desired temperature is approached the knob should be slowly turned anti-clockwise to a lower reading
until control about the desired mean temperature is achieved. At this stage it may be necessary to
switch out some of the heaters.
NOTE: The energy regulator has an arbitrary scale which is not a temperature scale.
At a setting of 10 the heater will be continuously on. A little practice will soon enable rapid temperature
selection. A Techne TC-8 or TC-8D temperature controller may be connected externally into the circuit
provided the energy regulator remains set at 10.
4. With increase in temperature, or when objects are placed into or taken from the bath, adjustment of
the air control valve may be necessary, but the bed must be kept vigorously boiling.
5. AS THIS UNIT DOES NOT CONVEY THE EFFECTS SUCH AS VAPOUR OR SMELL NORMALLY ASSOCIATED
WITH HIGH TEMPERATURE BATHS, WE ADVISE THAT ONLY TRAINED OPERATORS BE ALLOWED TO
USE IT.
6. For the SBL-1 it has been found that under most conditions, only one heater (1kW) is required to
maintain temperatures in the bath up to the maximum of 350°C, the second heater only being used
as a 'boost' heater.
Heater switch positions: HIGH
Maximum temperature for this bath: 350°C (662°F)
Energy
Regulator

OperatIOn

= 2kW
MEDIUM = 1kW
22
Heater
Selector
Switch