Labconco RapidStill II 65200 - Manual (Page 8)

INTRODUCTION
4
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 Viton* 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 (Teflon*) and dispenses steam
directly into the digestion tube.
*Viton is a registered trademark of E.I. Du Pont de Nemours & Co.
*Teflon is a registered trademark of E.I. Du Pont de Nemours & Co.