Chapter 1: Introduction
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Component Identification
Component Identification (Figure 2)
(1)
Boiler Water Switch.
This momentary contact switch fills the boiler
with water. It is interlocked to prevent its operation during the heating
of the boiler. Water should never be added to the boiler when it is hot
and low on water (less than ¼ full) or dry. Allow the boiler to cool
before adding water.
(2)
Boiler Heater Switch.
The boiler heater switch activates the boiler
heating element. The Boiler Heater should never be turned on when
the boiler is dry or low on water.
(3)
NaOH Addition Switch.
This momentary contact switch activates the
NaOH pump to pump caustic from a user-supplied vessel into the
digestion tube. The switch is interlocked to operate only when the
boiler heater is on. At the end of every day, the NaOH pump lines
must be rinsed with purified water.
(4)
Digestion Tube Clamping Device.
The clamping device quickly and
securely locates the digestion tube against the connection stopper.
(5)
Safety Door.
The safety door surrounds the digestion tube and is
designed to protect the operator. The door should always be in the
closed position during operation of the RapidStill II.
(6)
NaOH Delivery Tube.
This tube is used to dispense the user-supplied
caustic directly into the digestion tube.
(7)
Connection Stopper.
The stopper located on the bottom of the
distribution head seals the digestion tube to the head. The connection
stopper should be inspected and cleaned after every operating session
of the unit.
(8)
Distribution Head.
This distribution head acts as a junction for the
steam and NaOH delivery tubes. The central part of the distribution
head acts as a trap by preventing the NaOH from entering the
receiving flask.
(9)
Steam Inlet Tube.
The steam inlet tube is PTFE and dispenses steam
directly into the digestion tube.
(10)
Condenser Extension.
The condenser extension is a replaceable
glassware fitting that connects the condenser and distribution head.
(11)
Condenser.
The RapidStill II is equipped with a combined Allihn and
spiral condenser for efficient recovery of the distillate.
